Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

10 files changed, 0 insertions, 1671 deletions

diff --git a/vendor/quick-error/.cargo-checksum.json b/vendor/quick-error/.cargo-checksum.json
deleted file mode 100644
index 5f19af61c..000000000
--- a/vendor/quick-error/.cargo-checksum.json
+++ /dev/null
@@ -1 +0,0 @@
-{"files":{"Cargo.lock":"b88df71c076815e9922973e1f54af221486c3a83d5be2c1af9ca650a8f8f526f","Cargo.toml":"1f24b567c7f10b4ec44f5baf033d27da39f659c09df0e8a057437d10ecdd551a","LICENSE-APACHE":"c6596eb7be8581c18be736c846fb9173b69eccf6ef94c5135893ec56bd92ba08","LICENSE-MIT":"058f01fe181608d027fcde7e528fc03ea3cf90f30903c407644b0a9bbc54f500","README.rst":"8bd690e0089d4c38eb71f1327f5144741009f4b2f49f0b16f2547f528171e2e6","bulk.yaml":"17c2548388e0cd3a63473021a2f1e4ddedee082d79d9167cb31ad06a1890d3fc","examples/context.rs":"b9be9a4ca021a1f0ba659932bfc0cf891728bfaea49d48a8be183644c492515b","src/lib.rs":"a02c8a3c40fa1dcee8285b9c238d40cb3078cf4dded1c972fa6361a485d1667f","vagga.yaml":"b01ad1fd3aa25de2439c0f7a437c6517808ba3a7eeeb0363eb209f08e326cc8e"},"package":"a1d01941d82fa2ab50be1e79e6714289dd7cde78eba4c074bc5a4374f650dfe0"}
\ No newline at end of file
diff --git a/vendor/quick-error/Cargo.lock b/vendor/quick-error/Cargo.lock
deleted file mode 100644
index da1963ecf..000000000
--- a/vendor/quick-error/Cargo.lock
+++ /dev/null
@@ -1,6 +0,0 @@
-# This file is automatically @generated by Cargo.
-# It is not intended for manual editing.
-[[package]]
-name = "quick-error"
-version = "1.2.3"
-
diff --git a/vendor/quick-error/Cargo.toml b/vendor/quick-error/Cargo.toml
deleted file mode 100644
index b5d5f60b1..000000000
--- a/vendor/quick-error/Cargo.toml
+++ /dev/null
@@ -1,23 +0,0 @@
-# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
-#
-# When uploading crates to the registry Cargo will automatically
-# "normalize" Cargo.toml files for maximal compatibility
-# with all versions of Cargo and also rewrite `path` dependencies
-# to registry (e.g., crates.io) dependencies
-#
-# If you believe there's an error in this file please file an
-# issue against the rust-lang/cargo repository. If you're
-# editing this file be aware that the upstream Cargo.toml
-# will likely look very different (and much more reasonable)
-
-[package]
-name = "quick-error"
-version = "1.2.3"
-authors = ["Paul Colomiets <paul@colomiets.name>", "Colin Kiegel <kiegel@gmx.de>"]
-description = "    A macro which makes error types pleasant to write.\n"
-homepage = "http://github.com/tailhook/quick-error"
-documentation = "http://docs.rs/quick-error"
-keywords = ["macro", "error", "type", "enum"]
-categories = ["rust-patterns"]
-license = "MIT/Apache-2.0"
-repository = "http://github.com/tailhook/quick-error"
diff --git a/vendor/quick-error/LICENSE-APACHE b/vendor/quick-error/LICENSE-APACHE
deleted file mode 100644
index 8f71f43fe..000000000
--- a/vendor/quick-error/LICENSE-APACHE
+++ /dev/null
@@ -1,202 +0,0 @@
-                                 Apache License
-                           Version 2.0, January 2004
-                        http://www.apache.org/licenses/
-
-   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
-
-   1. Definitions.
-
-      "License" shall mean the terms and conditions for use, reproduction,
-      and distribution as defined by Sections 1 through 9 of this document.
-
-      "Licensor" shall mean the copyright owner or entity authorized by
-      the copyright owner that is granting the License.
-
-      "Legal Entity" shall mean the union of the acting entity and all
-      other entities that control, are controlled by, or are under common
-      control with that entity. For the purposes of this definition,
-      "control" means (i) the power, direct or indirect, to cause the
-      direction or management of such entity, whether by contract or
-      otherwise, or (ii) ownership of fifty percent (50%) or more of the
-      outstanding shares, or (iii) beneficial ownership of such entity.
-
-      "You" (or "Your") shall mean an individual or Legal Entity
-      exercising permissions granted by this License.
-
-      "Source" form shall mean the preferred form for making modifications,
-      including but not limited to software source code, documentation
-      source, and configuration files.
-
-      "Object" form shall mean any form resulting from mechanical
-      transformation or translation of a Source form, including but
-      not limited to compiled object code, generated documentation,
-      and conversions to other media types.
-
-      "Work" shall mean the work of authorship, whether in Source or
-      Object form, made available under the License, as indicated by a
-      copyright notice that is included in or attached to the work
-      (an example is provided in the Appendix below).
-
-      "Derivative Works" shall mean any work, whether in Source or Object
-      form, that is based on (or derived from) the Work and for which the
-      editorial revisions, annotations, elaborations, or other modifications
-      represent, as a whole, an original work of authorship. For the purposes
-      of this License, Derivative Works shall not include works that remain
-      separable from, or merely link (or bind by name) to the interfaces of,
-      the Work and Derivative Works thereof.
-
-      "Contribution" shall mean any work of authorship, including
-      the original version of the Work and any modifications or additions
-      to that Work or Derivative Works thereof, that is intentionally
-      submitted to Licensor for inclusion in the Work by the copyright owner
-      or by an individual or Legal Entity authorized to submit on behalf of
-      the copyright owner. For the purposes of this definition, "submitted"
-      means any form of electronic, verbal, or written communication sent
-      to the Licensor or its representatives, including but not limited to
-      communication on electronic mailing lists, source code control systems,
-      and issue tracking systems that are managed by, or on behalf of, the
-      Licensor for the purpose of discussing and improving the Work, but
-      excluding communication that is conspicuously marked or otherwise
-      designated in writing by the copyright owner as "Not a Contribution."
-
-      "Contributor" shall mean Licensor and any individual or Legal Entity
-      on behalf of whom a Contribution has been received by Licensor and
-      subsequently incorporated within the Work.
-
-   2. Grant of Copyright License. Subject to the terms and conditions of
-      this License, each Contributor hereby grants to You a perpetual,
-      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
-      copyright license to reproduce, prepare Derivative Works of,
-      publicly display, publicly perform, sublicense, and distribute the
-      Work and such Derivative Works in Source or Object form.
-
-   3. Grant of Patent License. Subject to the terms and conditions of
-      this License, each Contributor hereby grants to You a perpetual,
-      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
-      (except as stated in this section) patent license to make, have made,
-      use, offer to sell, sell, import, and otherwise transfer the Work,
-      where such license applies only to those patent claims licensable
-      by such Contributor that are necessarily infringed by their
-      Contribution(s) alone or by combination of their Contribution(s)
-      with the Work to which such Contribution(s) was submitted. If You
-      institute patent litigation against any entity (including a
-      cross-claim or counterclaim in a lawsuit) alleging that the Work
-      or a Contribution incorporated within the Work constitutes direct
-      or contributory patent infringement, then any patent licenses
-      granted to You under this License for that Work shall terminate
-      as of the date such litigation is filed.
-
-   4. Redistribution. You may reproduce and distribute copies of the
-      Work or Derivative Works thereof in any medium, with or without
-      modifications, and in Source or Object form, provided that You
-      meet the following conditions:
-
-      (a) You must give any other recipients of the Work or
-          Derivative Works a copy of this License; and
-
-      (b) You must cause any modified files to carry prominent notices
-          stating that You changed the files; and
-
-      (c) You must retain, in the Source form of any Derivative Works
-          that You distribute, all copyright, patent, trademark, and
-          attribution notices from the Source form of the Work,
-          excluding those notices that do not pertain to any part of
-          the Derivative Works; and
-
-      (d) If the Work includes a "NOTICE" text file as part of its
-          distribution, then any Derivative Works that You distribute must
-          include a readable copy of the attribution notices contained
-          within such NOTICE file, excluding those notices that do not
-          pertain to any part of the Derivative Works, in at least one
-          of the following places: within a NOTICE text file distributed
-          as part of the Derivative Works; within the Source form or
-          documentation, if provided along with the Derivative Works; or,
-          within a display generated by the Derivative Works, if and
-          wherever such third-party notices normally appear. The contents
-          of the NOTICE file are for informational purposes only and
-          do not modify the License. You may add Your own attribution
-          notices within Derivative Works that You distribute, alongside
-          or as an addendum to the NOTICE text from the Work, provided
-          that such additional attribution notices cannot be construed
-          as modifying the License.
-
-      You may add Your own copyright statement to Your modifications and
-      may provide additional or different license terms and conditions
-      for use, reproduction, or distribution of Your modifications, or
-      for any such Derivative Works as a whole, provided Your use,
-      reproduction, and distribution of the Work otherwise complies with
-      the conditions stated in this License.
-
-   5. Submission of Contributions. Unless You explicitly state otherwise,
-      any Contribution intentionally submitted for inclusion in the Work
-      by You to the Licensor shall be under the terms and conditions of
-      this License, without any additional terms or conditions.
-      Notwithstanding the above, nothing herein shall supersede or modify
-      the terms of any separate license agreement you may have executed
-      with Licensor regarding such Contributions.
-
-   6. Trademarks. This License does not grant permission to use the trade
-      names, trademarks, service marks, or product names of the Licensor,
-      except as required for reasonable and customary use in describing the
-      origin of the Work and reproducing the content of the NOTICE file.
-
-   7. Disclaimer of Warranty. Unless required by applicable law or
-      agreed to in writing, Licensor provides the Work (and each
-      Contributor provides its Contributions) on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
-      implied, including, without limitation, any warranties or conditions
-      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
-      PARTICULAR PURPOSE. You are solely responsible for determining the
-      appropriateness of using or redistributing the Work and assume any
-      risks associated with Your exercise of permissions under this License.
-
-   8. Limitation of Liability. In no event and under no legal theory,
-      whether in tort (including negligence), contract, or otherwise,
-      unless required by applicable law (such as deliberate and grossly
-      negligent acts) or agreed to in writing, shall any Contributor be
-      liable to You for damages, including any direct, indirect, special,
-      incidental, or consequential damages of any character arising as a
-      result of this License or out of the use or inability to use the
-      Work (including but not limited to damages for loss of goodwill,
-      work stoppage, computer failure or malfunction, or any and all
-      other commercial damages or losses), even if such Contributor
-      has been advised of the possibility of such damages.
-
-   9. Accepting Warranty or Additional Liability. While redistributing
-      the Work or Derivative Works thereof, You may choose to offer,
-      and charge a fee for, acceptance of support, warranty, indemnity,
-      or other liability obligations and/or rights consistent with this
-      License. However, in accepting such obligations, You may act only
-      on Your own behalf and on Your sole responsibility, not on behalf
-      of any other Contributor, and only if You agree to indemnify,
-      defend, and hold each Contributor harmless for any liability
-      incurred by, or claims asserted against, such Contributor by reason
-      of your accepting any such warranty or additional liability.
-
-   END OF TERMS AND CONDITIONS
-
-   APPENDIX: How to apply the Apache License to your work.
-
-      To apply the Apache License to your work, attach the following
-      boilerplate notice, with the fields enclosed by brackets "{}"
-      replaced with your own identifying information. (Don't include
-      the brackets!)  The text should be enclosed in the appropriate
-      comment syntax for the file format. We also recommend that a
-      file or class name and description of purpose be included on the
-      same "printed page" as the copyright notice for easier
-      identification within third-party archives.
-
-   Copyright {yyyy} {name of copyright owner}
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-
diff --git a/vendor/quick-error/LICENSE-MIT b/vendor/quick-error/LICENSE-MIT
deleted file mode 100644
index 14f715b80..000000000
--- a/vendor/quick-error/LICENSE-MIT
+++ /dev/null
@@ -1,19 +0,0 @@
-Copyright (c) 2015 The quick-error Developers
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
diff --git a/vendor/quick-error/README.rst b/vendor/quick-error/README.rst
deleted file mode 100644
index e54c055c4..000000000
--- a/vendor/quick-error/README.rst
+++ /dev/null
@@ -1,66 +0,0 @@
-===========
-Quick Error
-===========
-
-:Status: production-ready
-:Documentation: http://tailhook.github.io/quick-error/
-
-A macro which makes error types pleasant to write.
-
-Features:
-
-* Define enum type with arbitrary parameters
-* Concise notation of ``Display`` and ``Error`` traits
-* Full control of ``Display`` and ``Error`` trait implementation
-* Any number of ``From`` traits
-* Support for all enum-variants ``Unit``, ``Tuple`` and ``Struct``
-
-Here is the comprehensive example:
-
-.. code-block:: rust
-
-    quick_error! {
-        #[derive(Debug)]
-        pub enum IoWrapper {
-            Io(err: io::Error) {
-                from()
-                display("I/O error: {}", err)
-                cause(err)
-            }
-            Other(descr: &'static str) {
-                display("Error {}", descr)
-            }
-            IoAt { place: &'static str, err: io::Error } {
-                cause(err)
-                display(me) -> ("io error at {}: {}", place, err)
-                from(s: String) -> {
-                    place: "some string",
-                    err: io::Error::new(io::ErrorKind::Other, s)
-                }
-            }
-            Discard {
-                from(&'static str)
-            }
-        }
-    }
-
-=======
-License
-=======
-
-Licensed under either of
-
- * Apache License, Version 2.0, (./LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
- * MIT license (./LICENSE-MIT or http://opensource.org/licenses/MIT)
-
-at your option.
-
-------------
-Contribution
-------------
-
-Unless you explicitly state otherwise, any contribution intentionally
-submitted for inclusion in the work by you, as defined in the Apache-2.0
-license, shall be dual licensed as above, without any additional terms or
-conditions.
-
diff --git a/vendor/quick-error/bulk.yaml b/vendor/quick-error/bulk.yaml
deleted file mode 100644
index cdb9763b6..000000000
--- a/vendor/quick-error/bulk.yaml
+++ /dev/null
@@ -1,8 +0,0 @@
-minimum-bulk: v0.4.5
-
-versions:
-
-- file: Cargo.toml
-  block-start: ^\[package\]
-  block-end: ^\[.*\]
-  regex: ^version\s*=\s*"(\S+)"
diff --git a/vendor/quick-error/examples/context.rs b/vendor/quick-error/examples/context.rs
deleted file mode 100644
index 334700a03..000000000
--- a/vendor/quick-error/examples/context.rs
+++ /dev/null
@@ -1,48 +0,0 @@
-#[macro_use(quick_error)] extern crate quick_error;
-
-use std::io::{self, stderr, Read, Write};
-use std::fs::File;
-use std::env;
-use std::num::ParseIntError;
-use std::path::{Path, PathBuf};
-
-use quick_error::ResultExt;
-
-quick_error! {
-    #[derive(Debug)]
-    pub enum Error {
-        NoFileName {
-            description("no file name specified")
-        }
-        Io(err: io::Error, path: PathBuf) {
-            display("could not read file {:?}: {}", path, err)
-            context(path: &'a Path, err: io::Error)
-                -> (err, path.to_path_buf())
-        }
-        Parse(err: ParseIntError, path: PathBuf) {
-            display("could not parse file {:?}: {}", path, err)
-            context(path: &'a Path, err: ParseIntError)
-                -> (err, path.to_path_buf())
-        }
-    }
-}
-
-fn parse_file() -> Result<u64, Error> {
-    let fname = try!(env::args().skip(1).next().ok_or(Error::NoFileName));
-    let fname = Path::new(&fname);
-    let mut file = try!(File::open(fname).context(fname));
-    let mut buf = String::new();
-    try!(file.read_to_string(&mut buf).context(fname));
-    Ok(try!(buf.parse().context(fname)))
-}
-
-fn main() {
-    match parse_file() {
-        Ok(val) => {
-            println!("Read: {}", val);
-        }
-        Err(e) => {
-            writeln!(&mut stderr(), "Error: {}", e).ok();
-        }
-    }
-}
diff --git a/vendor/quick-error/src/lib.rs b/vendor/quick-error/src/lib.rs
deleted file mode 100644
index 17fc455d4..000000000
--- a/vendor/quick-error/src/lib.rs
+++ /dev/null
@@ -1,1262 +0,0 @@
-#![warn(missing_docs)]
-//! A macro which makes errors easy to write
-//!
-//! Minimum type is like this:
-//!
-//! ```rust
-//! #[macro_use] extern crate quick_error;
-//! # fn main() {}
-//!
-//! quick_error! {
-//!     #[derive(Debug)]
-//!     pub enum SomeError {
-//!         Variant1 {}
-//!     }
-//! }
-//! ```
-//! Both ``pub`` and non-public types may be declared, and all meta attributes
-//! (such as ``#[derive(Debug)]``) are forwarded as is. The `Debug` must be
-//! implemented (but you may do that yourself if you like). The documentation
-//! comments ``/// something`` (as well as other meta attrbiutes) on variants
-//! are allowed.
-//!
-//! # Allowed Syntax
-//!
-//! You may add arbitrary parameters to any struct variant:
-//!
-//! ```rust
-//! # #[macro_use] extern crate quick_error;
-//! # fn main() {}
-//! #
-//! quick_error! {
-//!     #[derive(Debug)]
-//!     pub enum SomeError {
-//!         /// IO Error
-//!         Io(err: std::io::Error) {}
-//!         /// Utf8 Error
-//!         Utf8(err: std::str::Utf8Error) {}
-//!     }
-//! }
-//! ```
-//!
-//! Note unlike in normal Enum declarations you declare names of fields (which
-//! are omitted from type). How they can be used is outlined below.
-//!
-//! Now you might have noticed trailing braces `{}`. They are used to define
-//! implementations. By default:
-//!
-//! * `Error::cause()` returns None (even if type wraps some value)
-//! * `Display` outputs debug representation
-//! * No `From` implementations are defined
-//!
-//! ```rust
-//! # #[macro_use] extern crate quick_error;
-//! # fn main() {}
-//! #
-//! quick_error! {
-//!     #[derive(Debug)]
-//!     pub enum SomeError {
-//!         Io(err: std::io::Error) {
-//!             display("{}", err)
-//!         }
-//!         Utf8(err: std::str::Utf8Error) {
-//!             display("utf8 error")
-//!         }
-//!     }
-//! }
-//! ```
-//!
-//! To change `cause` method to return some error, add `cause(value)`, for
-//! example:
-//!
-//! ```rust
-//! # #[macro_use] extern crate quick_error;
-//! # fn main() {}
-//! #
-//! quick_error! {
-//!     #[derive(Debug)]
-//!     pub enum SomeError {
-//!         Io(err: std::io::Error) {
-//!             cause(err)
-//!         }
-//!         Utf8(err: std::str::Utf8Error) {
-//!             display("utf8 error")
-//!         }
-//!         Other(err: Box<std::error::Error>) {
-//!             cause(&**err)
-//!         }
-//!     }
-//! }
-//! ```
-//! Note you don't need to wrap value in `Some`, its implicit. In case you want
-//! `None` returned just omit the `cause`. You can't return `None`
-//! conditionally.
-//!
-//! To change how each clause is `Display`ed add `display(pattern,..args)`,
-//! for example:
-//!
-//! ```rust
-//! # #[macro_use] extern crate quick_error;
-//! # fn main() {}
-//! #
-//! quick_error! {
-//!     #[derive(Debug)]
-//!     pub enum SomeError {
-//!         Io(err: std::io::Error) {
-//!             display("I/O error: {}", err)
-//!         }
-//!         Utf8(err: std::str::Utf8Error) {
-//!             display("Utf8 error, valid up to {}", err.valid_up_to())
-//!         }
-//!     }
-//! }
-//! ```
-//!
-//! If you need a reference to the error when `Display`ing, you can instead use
-//! `display(x) -> (pattern, ..args)`, where `x` sets the name of the reference.
-//!
-//! ```rust
-//! # #[macro_use] extern crate quick_error;
-//! # fn main() {}
-//! #
-//! use std::error::Error; // put methods like `source()` of this trait into scope
-//!
-//! quick_error! {
-//!     #[derive(Debug)]
-//!     pub enum SomeError {
-//!         Io(err: std::io::Error) {
-//!             display(x) -> ("I/O: {}", err)
-//!         }
-//!         Utf8(err: std::str::Utf8Error) {
-//!             display(self_) -> ("UTF-8 error. Valid up to {}", err.valid_up_to())
-//!         }
-//!     }
-//! }
-//! ```
-//!
-//! To convert to the type from any other, use one of the three forms of
-//! `from` clause.
-//!
-//! For example, to convert simple wrapper use bare `from()`:
-//!
-//! ```rust
-//! # #[macro_use] extern crate quick_error;
-//! # fn main() {}
-//! #
-//! quick_error! {
-//!     #[derive(Debug)]
-//!     pub enum SomeError {
-//!         Io(err: std::io::Error) {
-//!             from()
-//!         }
-//!     }
-//! }
-//! ```
-//!
-//! This implements ``From<io::Error>``.
-//!
-//! To convert to singleton enumeration type (discarding the value), use
-//! the `from(type)` form:
-//!
-//! ```rust
-//! # #[macro_use] extern crate quick_error;
-//! # fn main() {}
-//! #
-//! quick_error! {
-//!     #[derive(Debug)]
-//!     pub enum SomeError {
-//!         FormatError {
-//!             from(std::fmt::Error)
-//!         }
-//!     }
-//! }
-//! ```
-//!
-//! And the most powerful form is `from(var: type) -> (arguments...)`. It
-//! might be used to convert to type with multiple arguments or for arbitrary
-//! value conversions:
-//!
-//! ```rust
-//! # #[macro_use] extern crate quick_error;
-//! # fn main() {}
-//! #
-//! quick_error! {
-//!     #[derive(Debug)]
-//!     pub enum SomeError {
-//!         FailedOperation(s: &'static str, errno: i32) {
-//!             from(errno: i32) -> ("os error", errno)
-//!             from(e: std::io::Error) -> ("io error", e.raw_os_error().unwrap())
-//!         }
-//!         /// Converts from both kinds of utf8 errors
-//!         Utf8(err: std::str::Utf8Error) {
-//!             from()
-//!             from(err: std::string::FromUtf8Error) -> (err.utf8_error())
-//!         }
-//!     }
-//! }
-//! ```
-//! # Context
-//!
-//! Since quick-error 1.1 we also have a `context` declaration, which is
-//! similar to (the longest form of) `from`, but allows adding some context to
-//! the error. We need a longer example to demonstrate this:
-//!
-//! ```rust
-//! # #[macro_use] extern crate quick_error;
-//! # use std::io;
-//! # use std::fs::File;
-//! # use std::path::{Path, PathBuf};
-//! #
-//! use quick_error::ResultExt;
-//!
-//! quick_error! {
-//!     #[derive(Debug)]
-//!     pub enum Error {
-//!         File(filename: PathBuf, err: io::Error) {
-//!             context(path: &'a Path, err: io::Error)
-//!                 -> (path.to_path_buf(), err)
-//!         }
-//!     }
-//! }
-//!
-//! fn openfile(path: &Path) -> Result<(), Error> {
-//!     try!(File::open(path).context(path));
-//!
-//!     // If we didn't have context, the line above would be written as;
-//!     //
-//!     // try!(File::open(path)
-//!     //     .map_err(|err| Error::File(path.to_path_buf(), err)));
-//!
-//!     Ok(())
-//! }
-//!
-//! # fn main() {
-//! #     openfile(Path::new("/etc/somefile")).ok();
-//! # }
-//! ```
-//!
-//! Each `context(a: A, b: B)` clause implements
-//! `From<Context<A, B>> for Error`. Which means multiple `context` clauses
-//! are a subject to the normal coherence rules. Unfortunately, we can't
-//! provide full support of generics for the context, but you may either use a
-//! lifetime `'a` for references or `AsRef<Type>` (the latter means `A:
-//! AsRef<Type>`, and `Type` must be concrete). It's also occasionally useful
-//! to use a tuple as a type of the first argument.
-//!
-//! You also need to `use quick_error::ResultExt` extension trait to get
-//! working `.context()` method.
-//!
-//! More info on context in [this article](http://bit.ly/1PsuxDt).
-//!
-//! All forms of `from`, `display`, `cause`, and `context`
-//! clauses can be combined and put in arbitrary order. Only `from` and
-//! `context` can be used multiple times in single variant of enumeration.
-//! Docstrings are also okay.  Empty braces can be omitted as of quick_error
-//! 0.1.3.
-//!
-//! # Private Enums
-//!
-//! Since quick-error 1.2.0 we  have a way to make a private enum that is
-//! wrapped by public structure:
-//!
-//! ```rust
-//! #[macro_use] extern crate quick_error;
-//! # fn main() {}
-//!
-//! quick_error! {
-//!     #[derive(Debug)]
-//!     pub enum PubError wraps ErrorEnum {
-//!         Variant1 {}
-//!     }
-//! }
-//! ```
-//!
-//! This generates data structures like this
-//!
-//! ```rust
-//!
-//! pub struct PubError(ErrorEnum);
-//!
-//! enum ErrorEnum {
-//!     Variant1,
-//! }
-//!
-//! ```
-//!
-//! Which in turn allows you to export just `PubError` in your crate and keep
-//! actual enumeration private to the crate. This is useful to keep backwards
-//! compatibility for error types. Currently there is no shorcuts to define
-//! error constructors for the inner type, but we consider adding some in
-//! future versions.
-//!
-//! It's possible to declare internal enum as public too.
-//!
-//!
-
-
-/// Main macro that does all the work
-#[macro_export]
-macro_rules! quick_error {
-
-    (   $(#[$meta:meta])*
-        pub enum $name:ident { $($chunks:tt)* }
-    ) => {
-        quick_error!(SORT [pub enum $name $(#[$meta])* ]
-            items [] buf []
-            queue [ $($chunks)* ]);
-    };
-    (   $(#[$meta:meta])*
-        enum $name:ident { $($chunks:tt)* }
-    ) => {
-        quick_error!(SORT [enum $name $(#[$meta])* ]
-            items [] buf []
-            queue [ $($chunks)* ]);
-    };
-
-    (   $(#[$meta:meta])*
-        pub enum $name:ident wraps $enum_name:ident { $($chunks:tt)* }
-    ) => {
-        quick_error!(WRAPPER $enum_name [ pub struct ] $name $(#[$meta])*);
-        quick_error!(SORT [enum $enum_name $(#[$meta])* ]
-            items [] buf []
-            queue [ $($chunks)* ]);
-    };
-
-    (   $(#[$meta:meta])*
-        pub enum $name:ident wraps pub $enum_name:ident { $($chunks:tt)* }
-    ) => {
-        quick_error!(WRAPPER $enum_name [ pub struct ] $name $(#[$meta])*);
-        quick_error!(SORT [pub enum $enum_name $(#[$meta])* ]
-            items [] buf []
-            queue [ $($chunks)* ]);
-    };
-    (   $(#[$meta:meta])*
-        enum $name:ident wraps $enum_name:ident { $($chunks:tt)* }
-    ) => {
-        quick_error!(WRAPPER $enum_name [ struct ] $name $(#[$meta])*);
-        quick_error!(SORT [enum $enum_name $(#[$meta])* ]
-            items [] buf []
-            queue [ $($chunks)* ]);
-    };
-
-    (   $(#[$meta:meta])*
-        enum $name:ident wraps pub $enum_name:ident { $($chunks:tt)* }
-    ) => {
-        quick_error!(WRAPPER $enum_name [ struct ] $name $(#[$meta])*);
-        quick_error!(SORT [pub enum $enum_name $(#[$meta])* ]
-            items [] buf []
-            queue [ $($chunks)* ]);
-    };
-
-
-    (
-        WRAPPER $internal:ident [ $($strdef:tt)* ] $strname:ident
-        $(#[$meta:meta])*
-    ) => {
-        $(#[$meta])*
-        $($strdef)* $strname ( $internal );
-
-        impl ::std::fmt::Display for $strname {
-            fn fmt(&self, f: &mut ::std::fmt::Formatter)
-                -> ::std::fmt::Result
-            {
-                ::std::fmt::Display::fmt(&self.0, f)
-            }
-        }
-
-        impl From<$internal> for $strname {
-            fn from(err: $internal) -> Self {
-                $strname(err)
-            }
-        }
-
-        impl ::std::error::Error for $strname {
-            #[allow(deprecated)]
-            fn cause(&self) -> Option<&::std::error::Error> {
-                self.0.cause()
-            }
-        }
-    };
-
-    // Queue is empty, can do the work
-    (SORT [enum $name:ident $( #[$meta:meta] )*]
-        items [$($( #[$imeta:meta] )*
-                  => $iitem:ident: $imode:tt [$( $ivar:ident: $ityp:ty ),*]
-                                {$( $ifuncs:tt )*} )* ]
-        buf [ ]
-        queue [ ]
-    ) => {
-        quick_error!(ENUM_DEFINITION [enum $name $( #[$meta] )*]
-            body []
-            queue [$($( #[$imeta] )*
-                      => $iitem: $imode [$( $ivar: $ityp ),*] )*]
-        );
-        quick_error!(IMPLEMENTATIONS $name {$(
-           $iitem: $imode [$(#[$imeta])*] [$( $ivar: $ityp ),*] {$( $ifuncs )*}
-           )*});
-        $(
-            quick_error!(ERROR_CHECK $imode $($ifuncs)*);
-        )*
-    };
-    (SORT [pub enum $name:ident $( #[$meta:meta] )*]
-        items [$($( #[$imeta:meta] )*
-                  => $iitem:ident: $imode:tt [$( $ivar:ident: $ityp:ty ),*]
-                                {$( $ifuncs:tt )*} )* ]
-        buf [ ]
-        queue [ ]
-    ) => {
-        quick_error!(ENUM_DEFINITION [pub enum $name $( #[$meta] )*]
-            body []
-            queue [$($( #[$imeta] )*
-                      => $iitem: $imode [$( $ivar: $ityp ),*] )*]
-        );
-        quick_error!(IMPLEMENTATIONS $name {$(
-           $iitem: $imode [$(#[$imeta])*] [$( $ivar: $ityp ),*] {$( $ifuncs )*}
-           )*});
-        $(
-            quick_error!(ERROR_CHECK $imode $($ifuncs)*);
-        )*
-    };
-    // Add meta to buffer
-    (SORT [$( $def:tt )*]
-        items [$($( #[$imeta:meta] )*
-                  => $iitem:ident: $imode:tt [$( $ivar:ident: $ityp:ty ),*]
-                                {$( $ifuncs:tt )*} )* ]
-        buf [$( #[$bmeta:meta] )*]
-        queue [ #[$qmeta:meta] $( $tail:tt )*]
-    ) => {
-        quick_error!(SORT [$( $def )*]
-            items [$( $(#[$imeta])* => $iitem: $imode [$( $ivar:$ityp ),*] {$( $ifuncs )*} )*]
-            buf [$( #[$bmeta] )* #[$qmeta] ]
-            queue [$( $tail )*]);
-    };
-    // Add ident to buffer
-    (SORT [$( $def:tt )*]
-        items [$($( #[$imeta:meta] )*
-                  => $iitem:ident: $imode:tt [$( $ivar:ident: $ityp:ty ),*]
-                                {$( $ifuncs:tt )*} )* ]
-        buf [$( #[$bmeta:meta] )*]
-        queue [ $qitem:ident $( $tail:tt )*]
-    ) => {
-        quick_error!(SORT [$( $def )*]
-            items [$( $(#[$imeta])*
-                      => $iitem: $imode [$( $ivar:$ityp ),*] {$( $ifuncs )*} )*]
-            buf [$(#[$bmeta])* => $qitem : UNIT [ ] ]
-            queue [$( $tail )*]);
-    };
-    // Flush buffer on meta after ident
-    (SORT [$( $def:tt )*]
-        items [$($( #[$imeta:meta] )*
-                  => $iitem:ident: $imode:tt [$( $ivar:ident: $ityp:ty ),*]
-                                {$( $ifuncs:tt )*} )* ]
-        buf [$( #[$bmeta:meta] )*
-            => $bitem:ident: $bmode:tt [$( $bvar:ident: $btyp:ty ),*] ]
-        queue [ #[$qmeta:meta] $( $tail:tt )*]
-    ) => {
-        quick_error!(SORT [$( $def )*]
-            enum [$( $(#[$emeta])* => $eitem $(( $($etyp),* ))* )*
-                     $(#[$bmeta])* => $bitem: $bmode $(( $($btyp),* ))*]
-            items [$($( #[$imeta:meta] )*
-                      => $iitem: $imode [$( $ivar:$ityp ),*] {$( $ifuncs )*} )*
-                     $bitem: $bmode [$( $bvar:$btyp ),*] {} ]
-            buf [ #[$qmeta] ]
-            queue [$( $tail )*]);
-    };
-    // Add tuple enum-variant
-    (SORT [$( $def:tt )*]
-        items [$($( #[$imeta:meta] )*
-                  => $iitem:ident: $imode:tt [$( $ivar:ident: $ityp:ty ),*]
-                                {$( $ifuncs:tt )*} )* ]
-        buf [$( #[$bmeta:meta] )* => $bitem:ident: UNIT [ ] ]
-        queue [($( $qvar:ident: $qtyp:ty ),+) $( $tail:tt )*]
-    ) => {
-        quick_error!(SORT [$( $def )*]
-            items [$( $(#[$imeta])* => $iitem: $imode [$( $ivar:$ityp ),*] {$( $ifuncs )*} )*]
-            buf [$( #[$bmeta] )* => $bitem: TUPLE [$( $qvar:$qtyp ),*] ]
-            queue [$( $tail )*]
-        );
-    };
-    // Add struct enum-variant - e.g. { descr: &'static str }
-    (SORT [$( $def:tt )*]
-        items [$($( #[$imeta:meta] )*
-                  => $iitem:ident: $imode:tt [$( $ivar:ident: $ityp:ty ),*]
-                                {$( $ifuncs:tt )*} )* ]
-        buf [$( #[$bmeta:meta] )* => $bitem:ident: UNIT [ ] ]
-        queue [{ $( $qvar:ident: $qtyp:ty ),+} $( $tail:tt )*]
-    ) => {
-        quick_error!(SORT [$( $def )*]
-            items [$( $(#[$imeta])* => $iitem: $imode [$( $ivar:$ityp ),*] {$( $ifuncs )*} )*]
-            buf [$( #[$bmeta] )* => $bitem: STRUCT [$( $qvar:$qtyp ),*] ]
-            queue [$( $tail )*]);
-    };
-    // Add struct enum-variant, with excess comma - e.g. { descr: &'static str, }
-    (SORT [$( $def:tt )*]
-        items [$($( #[$imeta:meta] )*
-                  => $iitem:ident: $imode:tt [$( $ivar:ident: $ityp:ty ),*]
-                                {$( $ifuncs:tt )*} )* ]
-        buf [$( #[$bmeta:meta] )* => $bitem:ident: UNIT [ ] ]
-        queue [{$( $qvar:ident: $qtyp:ty ),+ ,} $( $tail:tt )*]
-    ) => {
-        quick_error!(SORT [$( $def )*]
-            items [$( $(#[$imeta])* => $iitem: $imode [$( $ivar:$ityp ),*] {$( $ifuncs )*} )*]
-            buf [$( #[$bmeta] )* => $bitem: STRUCT [$( $qvar:$qtyp ),*] ]
-            queue [$( $tail )*]);
-    };
-    // Add braces and flush always on braces
-    (SORT [$( $def:tt )*]
-        items [$($( #[$imeta:meta] )*
-                  => $iitem:ident: $imode:tt [$( $ivar:ident: $ityp:ty ),*]
-                                {$( $ifuncs:tt )*} )* ]
-        buf [$( #[$bmeta:meta] )*
-                 => $bitem:ident: $bmode:tt [$( $bvar:ident: $btyp:ty ),*] ]
-        queue [ {$( $qfuncs:tt )*} $( $tail:tt )*]
-    ) => {
-        quick_error!(SORT [$( $def )*]
-            items [$( $(#[$imeta])* => $iitem: $imode [$( $ivar:$ityp ),*] {$( $ifuncs )*} )*
-                      $(#[$bmeta])* => $bitem: $bmode [$( $bvar:$btyp ),*] {$( $qfuncs )*} ]
-            buf [ ]
-            queue [$( $tail )*]);
-    };
-    // Flush buffer on double ident
-    (SORT [$( $def:tt )*]
-        items [$($( #[$imeta:meta] )*
-                  => $iitem:ident: $imode:tt [$( $ivar:ident: $ityp:ty ),*]
-                                {$( $ifuncs:tt )*} )* ]
-        buf [$( #[$bmeta:meta] )*
-                 => $bitem:ident: $bmode:tt [$( $bvar:ident: $btyp:ty ),*] ]
-        queue [ $qitem:ident $( $tail:tt )*]
-    ) => {
-        quick_error!(SORT [$( $def )*]
-            items [$( $(#[$imeta])* => $iitem: $imode [$( $ivar:$ityp ),*] {$( $ifuncs )*} )*
-                     $(#[$bmeta])* => $bitem: $bmode [$( $bvar:$btyp ),*] {} ]
-            buf [ => $qitem : UNIT [ ] ]
-            queue [$( $tail )*]);
-    };
-    // Flush buffer on end
-    (SORT [$( $def:tt )*]
-        items [$($( #[$imeta:meta] )*
-                  => $iitem:ident: $imode:tt [$( $ivar:ident: $ityp:ty ),*]
-                                {$( $ifuncs:tt )*} )* ]
-        buf [$( #[$bmeta:meta] )*
-            => $bitem:ident: $bmode:tt [$( $bvar:ident: $btyp:ty ),*] ]
-        queue [ ]
-    ) => {
-        quick_error!(SORT [$( $def )*]
-            items [$( $(#[$imeta])* => $iitem: $imode [$( $ivar:$ityp ),*] {$( $ifuncs )*} )*
-                     $(#[$bmeta])* => $bitem: $bmode [$( $bvar:$btyp ),*] {} ]
-            buf [ ]
-            queue [ ]);
-    };
-    // Public enum (Queue Empty)
-    (ENUM_DEFINITION [pub enum $name:ident $( #[$meta:meta] )*]
-        body [$($( #[$imeta:meta] )*
-            => $iitem:ident ($(($( $ttyp:ty ),+))*) {$({$( $svar:ident: $styp:ty ),*})*} )* ]
-        queue [ ]
-    ) => {
-        #[allow(unknown_lints)]  // no unused_doc_comments in older rust
-        #[allow(renamed_and_removed_lints)]
-        #[allow(unused_doc_comment)]
-        #[allow(unused_doc_comments)]
-        $(#[$meta])*
-        pub enum $name {
-            $(
-                $(#[$imeta])*
-                $iitem $(($( $ttyp ),*))* $({$( $svar: $styp ),*})*,
-            )*
-        }
-    };
-    // Private enum (Queue Empty)
-    (ENUM_DEFINITION [enum $name:ident $( #[$meta:meta] )*]
-        body [$($( #[$imeta:meta] )*
-            => $iitem:ident ($(($( $ttyp:ty ),+))*) {$({$( $svar:ident: $styp:ty ),*})*} )* ]
-        queue [ ]
-    ) => {
-        #[allow(unknown_lints)]  // no unused_doc_comments in older rust
-        #[allow(renamed_and_removed_lints)]
-        #[allow(unused_doc_comment)]
-        #[allow(unused_doc_comments)]
-        $(#[$meta])*
-        enum $name {
-            $(
-                $(#[$imeta])*
-                $iitem $(($( $ttyp ),*))* $({$( $svar: $styp ),*})*,
-            )*
-        }
-    };
-    // Unit variant
-    (ENUM_DEFINITION [$( $def:tt )*]
-        body [$($( #[$imeta:meta] )*
-            => $iitem:ident ($(($( $ttyp:ty ),+))*) {$({$( $svar:ident: $styp:ty ),*})*} )* ]
-        queue [$( #[$qmeta:meta] )*
-            => $qitem:ident: UNIT [ ] $( $queue:tt )*]
-    ) => {
-        quick_error!(ENUM_DEFINITION [ $($def)* ]
-            body [$($( #[$imeta] )* => $iitem ($(($( $ttyp ),+))*) {$({$( $svar: $styp ),*})*} )*
-                    $( #[$qmeta] )* => $qitem () {} ]
-            queue [ $($queue)* ]
-        );
-    };
-    // Tuple variant
-    (ENUM_DEFINITION [$( $def:tt )*]
-        body [$($( #[$imeta:meta] )*
-            => $iitem:ident ($(($( $ttyp:ty ),+))*) {$({$( $svar:ident: $styp:ty ),*})*} )* ]
-        queue [$( #[$qmeta:meta] )*
-            => $qitem:ident: TUPLE [$( $qvar:ident: $qtyp:ty ),+] $( $queue:tt )*]
-    ) => {
-        quick_error!(ENUM_DEFINITION [ $($def)* ]
-            body [$($( #[$imeta] )* => $iitem ($(($( $ttyp ),+))*) {$({$( $svar: $styp ),*})*} )*
-                    $( #[$qmeta] )* => $qitem (($( $qtyp ),*)) {} ]
-            queue [ $($queue)* ]
-        );
-    };
-    // Struct variant
-    (ENUM_DEFINITION [$( $def:tt )*]
-        body [$($( #[$imeta:meta] )*
-            => $iitem:ident ($(($( $ttyp:ty ),+))*) {$({$( $svar:ident: $styp:ty ),*})*} )* ]
-        queue [$( #[$qmeta:meta] )*
-            => $qitem:ident: STRUCT [$( $qvar:ident: $qtyp:ty ),*] $( $queue:tt )*]
-    ) => {
-        quick_error!(ENUM_DEFINITION [ $($def)* ]
-            body [$($( #[$imeta] )* => $iitem ($(($( $ttyp ),+))*) {$({$( $svar: $styp ),*})*} )*
-                    $( #[$qmeta] )* => $qitem () {{$( $qvar: $qtyp ),*}} ]
-            queue [ $($queue)* ]
-        );
-    };
-    (IMPLEMENTATIONS
-        $name:ident {$(
-            $item:ident: $imode:tt [$(#[$imeta:meta])*] [$( $var:ident: $typ:ty ),*] {$( $funcs:tt )*}
-        )*}
-    ) => {
-        #[allow(unused)]
-        #[allow(unknown_lints)]  // no unused_doc_comments in older rust
-        #[allow(renamed_and_removed_lints)]
-        #[allow(unused_doc_comment)]
-        #[allow(unused_doc_comments)]
-        impl ::std::fmt::Display for $name {
-            fn fmt(&self, fmt: &mut ::std::fmt::Formatter)
-                -> ::std::fmt::Result
-            {
-                match *self {
-                    $(
-                        $(#[$imeta])*
-                        quick_error!(ITEM_PATTERN
-                            $name $item: $imode [$( ref $var ),*]
-                        ) => {
-                            let display_fn = quick_error!(FIND_DISPLAY_IMPL
-                                $name $item: $imode
-                                {$( $funcs )*});
-
-                            display_fn(self, fmt)
-                        }
-                    )*
-                }
-            }
-        }
-        #[allow(unused)]
-        #[allow(unknown_lints)]  // no unused_doc_comments in older rust
-        #[allow(renamed_and_removed_lints)]
-        #[allow(unused_doc_comment)]
-        #[allow(unused_doc_comments)]
-        impl ::std::error::Error for $name {
-            fn cause(&self) -> Option<&::std::error::Error> {
-                match *self {
-                    $(
-                        $(#[$imeta])*
-                        quick_error!(ITEM_PATTERN
-                            $name $item: $imode [$( ref $var ),*]
-                        ) => {
-                            quick_error!(FIND_CAUSE_IMPL
-                                $item: $imode [$( $var ),*]
-                                {$( $funcs )*})
-                        }
-                    )*
-                }
-            }
-        }
-        $(
-            quick_error!(FIND_FROM_IMPL
-                $name $item: $imode [$( $var:$typ ),*]
-                {$( $funcs )*});
-        )*
-        $(
-            quick_error!(FIND_CONTEXT_IMPL
-                $name $item: $imode [$( $var:$typ ),*]
-                {$( $funcs )*});
-        )*
-    };
-    (FIND_DISPLAY_IMPL $name:ident $item:ident: $imode:tt
-        { display($self_:tt) -> ($( $exprs:tt )*) $( $tail:tt )*}
-    ) => {
-        |quick_error!(IDENT $self_): &$name, f: &mut ::std::fmt::Formatter| { write!(f, $( $exprs )*) }
-    };
-    (FIND_DISPLAY_IMPL $name:ident $item:ident: $imode:tt
-        { display($pattern:expr) $( $tail:tt )*}
-    ) => {
-        |_, f: &mut ::std::fmt::Formatter| { write!(f, $pattern) }
-    };
-    (FIND_DISPLAY_IMPL $name:ident $item:ident: $imode:tt
-        { display($pattern:expr, $( $exprs:tt )*) $( $tail:tt )*}
-    ) => {
-        |_, f: &mut ::std::fmt::Formatter| { write!(f, $pattern, $( $exprs )*) }
-    };
-    (FIND_DISPLAY_IMPL $name:ident $item:ident: $imode:tt
-        { $t:tt $( $tail:tt )*}
-    ) => {
-        quick_error!(FIND_DISPLAY_IMPL
-            $name $item: $imode
-            {$( $tail )*})
-    };
-    (FIND_DISPLAY_IMPL $name:ident $item:ident: $imode:tt
-        { }
-    ) => {
-        |self_: &$name, f: &mut ::std::fmt::Formatter| {
-            write!(f, "{:?}", self_)
-        }
-    };
-    (FIND_DESCRIPTION_IMPL $item:ident: $imode:tt $me:ident $fmt:ident
-        [$( $var:ident ),*]
-        { description($expr:expr) $( $tail:tt )*}
-    ) => {};
-    (FIND_DESCRIPTION_IMPL $item:ident: $imode:tt $me:ident $fmt:ident
-        [$( $var:ident ),*]
-        { $t:tt $( $tail:tt )*}
-    ) => {};
-    (FIND_DESCRIPTION_IMPL $item:ident: $imode:tt $me:ident $fmt:ident
-        [$( $var:ident ),*]
-        { }
-    ) => {};
-    (FIND_CAUSE_IMPL $item:ident: $imode:tt
-        [$( $var:ident ),*]
-        { cause($expr:expr) $( $tail:tt )*}
-    ) => {
-        Some($expr)
-    };
-    (FIND_CAUSE_IMPL $item:ident: $imode:tt
-        [$( $var:ident ),*]
-        { $t:tt $( $tail:tt )*}
-    ) => {
-        quick_error!(FIND_CAUSE_IMPL
-            $item: $imode [$( $var ),*]
-            { $($tail)* })
-    };
-    (FIND_CAUSE_IMPL $item:ident: $imode:tt
-        [$( $var:ident ),*]
-        { }
-    ) => {
-        None
-    };
-    // ----------------------------- FROM IMPL --------------------------
-    (FIND_FROM_IMPL $name:ident $item:ident: $imode:tt
-        [$( $var:ident: $typ:ty ),*]
-        { from() $( $tail:tt )*}
-    ) => {
-        $(
-            impl From<$typ> for $name {
-                fn from($var: $typ) -> $name {
-                    $name::$item($var)
-                }
-            }
-        )*
-        quick_error!(FIND_FROM_IMPL
-            $name $item: $imode [$( $var:$typ ),*]
-            {$( $tail )*});
-    };
-    (FIND_FROM_IMPL $name:ident $item:ident: UNIT
-        [ ]
-        { from($ftyp:ty) $( $tail:tt )*}
-    ) => {
-        impl From<$ftyp> for $name {
-            fn from(_discarded_error: $ftyp) -> $name {
-                $name::$item
-            }
-        }
-        quick_error!(FIND_FROM_IMPL
-            $name $item: UNIT [  ]
-            {$( $tail )*});
-    };
-    (FIND_FROM_IMPL $name:ident $item:ident: TUPLE
-        [$( $var:ident: $typ:ty ),*]
-        { from($fvar:ident: $ftyp:ty) -> ($( $texpr:expr ),*) $( $tail:tt )*}
-    ) => {
-        impl From<$ftyp> for $name {
-            fn from($fvar: $ftyp) -> $name {
-                $name::$item($( $texpr ),*)
-            }
-        }
-        quick_error!(FIND_FROM_IMPL
-            $name $item: TUPLE [$( $var:$typ ),*]
-            { $($tail)* });
-    };
-    (FIND_FROM_IMPL $name:ident $item:ident: STRUCT
-        [$( $var:ident: $typ:ty ),*]
-        { from($fvar:ident: $ftyp:ty) -> {$( $tvar:ident: $texpr:expr ),*} $( $tail:tt )*}
-    ) => {
-        impl From<$ftyp> for $name {
-            fn from($fvar: $ftyp) -> $name {
-                $name::$item {
-                    $( $tvar: $texpr ),*
-                }
-            }
-        }
-        quick_error!(FIND_FROM_IMPL
-            $name $item: STRUCT [$( $var:$typ ),*]
-            { $($tail)* });
-    };
-    (FIND_FROM_IMPL $name:ident $item:ident: $imode:tt
-        [$( $var:ident: $typ:ty ),*]
-        { $t:tt $( $tail:tt )*}
-    ) => {
-        quick_error!(FIND_FROM_IMPL
-            $name $item: $imode [$( $var:$typ ),*]
-            {$( $tail )*}
-        );
-    };
-    (FIND_FROM_IMPL $name:ident $item:ident: $imode:tt
-        [$( $var:ident: $typ:ty ),*]
-        { }
-    ) => {
-    };
-    // ----------------------------- CONTEXT IMPL --------------------------
-    (FIND_CONTEXT_IMPL $name:ident $item:ident: TUPLE
-        [$( $var:ident: $typ:ty ),*]
-        { context($cvar:ident: AsRef<$ctyp:ty>, $fvar:ident: $ftyp:ty)
-            -> ($( $texpr:expr ),*) $( $tail:tt )* }
-    ) => {
-        impl<T: AsRef<$ctyp>> From<$crate::Context<T, $ftyp>> for $name {
-            fn from(
-                $crate::Context($cvar, $fvar): $crate::Context<T, $ftyp>)
-                -> $name
-            {
-                $name::$item($( $texpr ),*)
-            }
-        }
-        quick_error!(FIND_CONTEXT_IMPL
-            $name $item: TUPLE [$( $var:$typ ),*]
-            { $($tail)* });
-    };
-    (FIND_CONTEXT_IMPL $name:ident $item:ident: TUPLE
-        [$( $var:ident: $typ:ty ),*]
-        { context($cvar:ident: $ctyp:ty, $fvar:ident: $ftyp:ty)
-            -> ($( $texpr:expr ),*) $( $tail:tt )* }
-    ) => {
-        impl<'a> From<$crate::Context<$ctyp, $ftyp>> for $name {
-            fn from(
-                $crate::Context($cvar, $fvar): $crate::Context<$ctyp, $ftyp>)
-                -> $name
-            {
-                $name::$item($( $texpr ),*)
-            }
-        }
-        quick_error!(FIND_CONTEXT_IMPL
-            $name $item: TUPLE [$( $var:$typ ),*]
-            { $($tail)* });
-    };
-    (FIND_CONTEXT_IMPL $name:ident $item:ident: STRUCT
-        [$( $var:ident: $typ:ty ),*]
-        { context($cvar:ident: AsRef<$ctyp:ty>, $fvar:ident: $ftyp:ty)
-            -> {$( $tvar:ident: $texpr:expr ),*} $( $tail:tt )* }
-    ) => {
-        impl<T: AsRef<$ctyp>> From<$crate::Context<T, $ftyp>> for $name {
-            fn from(
-                $crate::Context($cvar, $fvar): $crate::Context<$ctyp, $ftyp>)
-                -> $name
-            {
-                $name::$item {
-                    $( $tvar: $texpr ),*
-                }
-            }
-        }
-        quick_error!(FIND_CONTEXT_IMPL
-            $name $item: STRUCT [$( $var:$typ ),*]
-            { $($tail)* });
-    };
-    (FIND_CONTEXT_IMPL $name:ident $item:ident: STRUCT
-        [$( $var:ident: $typ:ty ),*]
-        { context($cvar:ident: $ctyp:ty, $fvar:ident: $ftyp:ty)
-            -> {$( $tvar:ident: $texpr:expr ),*} $( $tail:tt )* }
-    ) => {
-        impl<'a> From<$crate::Context<$ctyp, $ftyp>> for $name {
-            fn from(
-                $crate::Context($cvar, $fvar): $crate::Context<$ctyp, $ftyp>)
-                -> $name
-            {
-                $name::$item {
-                    $( $tvar: $texpr ),*
-                }
-            }
-        }
-        quick_error!(FIND_CONTEXT_IMPL
-            $name $item: STRUCT [$( $var:$typ ),*]
-            { $($tail)* });
-    };
-    (FIND_CONTEXT_IMPL $name:ident $item:ident: $imode:tt
-        [$( $var:ident: $typ:ty ),*]
-        { $t:tt $( $tail:tt )*}
-    ) => {
-        quick_error!(FIND_CONTEXT_IMPL
-            $name $item: $imode [$( $var:$typ ),*]
-            {$( $tail )*}
-        );
-    };
-    (FIND_CONTEXT_IMPL $name:ident $item:ident: $imode:tt
-        [$( $var:ident: $typ:ty ),*]
-        { }
-    ) => {
-    };
-    // ----------------------------- ITEM IMPL --------------------------
-    (ITEM_BODY $(#[$imeta:meta])* $item:ident: UNIT
-    ) => { };
-    (ITEM_BODY $(#[$imeta:meta])* $item:ident: TUPLE
-        [$( $typ:ty ),*]
-    ) => {
-        ($( $typ ),*)
-    };
-    (ITEM_BODY $(#[$imeta:meta])* $item:ident: STRUCT
-        [$( $var:ident: $typ:ty ),*]
-    ) => {
-        {$( $var:$typ ),*}
-    };
-    (ITEM_PATTERN $name:ident $item:ident: UNIT []
-    ) => {
-        $name::$item
-    };
-    (ITEM_PATTERN $name:ident $item:ident: TUPLE
-        [$( ref $var:ident ),*]
-    ) => {
-        $name::$item ($( ref $var ),*)
-    };
-    (ITEM_PATTERN $name:ident $item:ident: STRUCT
-        [$( ref $var:ident ),*]
-    ) => {
-        $name::$item {$( ref $var ),*}
-    };
-    // This one should match all allowed sequences in "funcs" but not match
-    // anything else.
-    // This is to contrast FIND_* clauses which just find stuff they need and
-    // skip everything else completely
-    (ERROR_CHECK $imode:tt display($self_:tt) -> ($( $exprs:tt )*) $( $tail:tt )*)
-    => { quick_error!(ERROR_CHECK $imode $($tail)*); };
-    (ERROR_CHECK $imode:tt display($pattern: expr) $( $tail:tt )*)
-    => { quick_error!(ERROR_CHECK $imode $($tail)*); };
-    (ERROR_CHECK $imode:tt display($pattern: expr, $( $exprs:tt )*) $( $tail:tt )*)
-    => { quick_error!(ERROR_CHECK $imode $($tail)*); };
-    (ERROR_CHECK $imode:tt description($expr:expr) $( $tail:tt )*)
-    => { quick_error!(ERROR_CHECK $imode $($tail)*); };
-    (ERROR_CHECK $imode:tt cause($expr:expr) $($tail:tt)*)
-    => { quick_error!(ERROR_CHECK $imode $($tail)*); };
-    (ERROR_CHECK $imode:tt from() $($tail:tt)*)
-    => { quick_error!(ERROR_CHECK $imode $($tail)*); };
-    (ERROR_CHECK $imode:tt from($ftyp:ty) $($tail:tt)*)
-    => { quick_error!(ERROR_CHECK $imode $($tail)*); };
-    (ERROR_CHECK TUPLE from($fvar:ident: $ftyp:ty) -> ($( $e:expr ),*) $( $tail:tt )*)
-    => { quick_error!(ERROR_CHECK TUPLE $($tail)*); };
-    (ERROR_CHECK STRUCT from($fvar:ident: $ftyp:ty) -> {$( $v:ident: $e:expr ),*} $( $tail:tt )*)
-    => { quick_error!(ERROR_CHECK STRUCT $($tail)*); };
-
-    (ERROR_CHECK TUPLE context($cvar:ident: $ctyp:ty, $fvar:ident: $ftyp:ty)
-        -> ($( $e:expr ),*) $( $tail:tt )*)
-    => { quick_error!(ERROR_CHECK TUPLE $($tail)*); };
-    (ERROR_CHECK STRUCT context($cvar:ident: $ctyp:ty, $fvar:ident: $ftyp:ty)
-        -> {$( $v:ident: $e:expr ),*} $( $tail:tt )*)
-    => { quick_error!(ERROR_CHECK STRUCT $($tail)*); };
-
-    (ERROR_CHECK $imode:tt ) => {};
-    // Utility functions
-    (IDENT $ident:ident) => { $ident }
-}
-
-
-/// Generic context type
-///
-/// Used mostly as a transport for `ResultExt::context` method
-#[derive(Debug)]
-pub struct Context<X, E>(pub X, pub E);
-
-/// Result extension trait adding a `context` method
-pub trait ResultExt<T, E> {
-    /// The method is use to add context information to current operation
-    ///
-    /// The context data is then used in error constructor to store additional
-    /// information within error. For example, you may add a filename as a
-    /// context for file operation. See crate documentation for the actual
-    /// example.
-    fn context<X>(self, x: X) -> Result<T, Context<X, E>>;
-}
-
-impl<T, E> ResultExt<T, E> for Result<T, E> {
-    fn context<X>(self, x: X) -> Result<T, Context<X, E>> {
-        self.map_err(|e| Context(x, e))
-    }
-}
-
-
-
-#[cfg(test)]
-#[allow(deprecated)]
-mod test {
-    use std::num::{ParseFloatError, ParseIntError};
-    use std::str::Utf8Error;
-    use std::string::FromUtf8Error;
-    use std::error::Error;
-    use std::path::{Path, PathBuf};
-
-    use super::ResultExt;
-
-    quick_error! {
-        #[derive(Debug)]
-        pub enum Bare {
-            One
-            Two
-        }
-    }
-
-    #[test]
-    fn bare_item_direct() {
-        assert_eq!(format!("{}", Bare::One), "One".to_string());
-        assert_eq!(format!("{:?}", Bare::One), "One".to_string());
-        assert!(Bare::One.cause().is_none());
-    }
-    #[test]
-    fn bare_item_trait() {
-        let err: &Error = &Bare::Two;
-        assert_eq!(format!("{}", err), "Two".to_string());
-        assert_eq!(format!("{:?}", err), "Two".to_string());
-        assert!(err.cause().is_none());
-    }
-
-    quick_error! {
-        #[derive(Debug)]
-        pub enum Wrapper wraps Wrapped {
-            One
-            Two(s: String) {
-                display("two: {}", s)
-                from()
-            }
-        }
-    }
-
-    #[test]
-    fn wrapper() {
-        assert_eq!(format!("{}", Wrapper::from(Wrapped::One)),
-            "One".to_string());
-        assert_eq!(format!("{}",
-            Wrapper::from(Wrapped::from(String::from("hello")))),
-            "two: hello".to_string());
-        assert_eq!(format!("{:?}", Wrapper::from(Wrapped::One)),
-            "Wrapper(One)".to_string());
-    }
-
-    quick_error! {
-        #[derive(Debug, PartialEq)]
-        pub enum TupleWrapper {
-            /// ParseFloat Error
-            ParseFloatError(err: ParseFloatError) {
-                from()
-                display("parse float error: {err}", err=err)
-                cause(err)
-            }
-            Other(descr: &'static str) {
-                display("Error: {}", descr)
-            }
-            /// FromUtf8 Error
-            FromUtf8Error(err: Utf8Error, source: Vec<u8>) {
-                cause(err)
-                display(me) -> ("{desc} at index {pos}: {err}", desc="utf8 error", pos=err.valid_up_to(), err=err)
-                from(err: FromUtf8Error) -> (err.utf8_error().clone(), err.into_bytes())
-            }
-            Discard {
-                from(&'static str)
-            }
-            Singleton {
-                display("Just a string")
-            }
-        }
-    }
-
-    #[test]
-    fn tuple_wrapper_err() {
-        let cause = "one and a half times pi".parse::<f32>().unwrap_err();
-        let err = TupleWrapper::ParseFloatError(cause.clone());
-        assert_eq!(format!("{}", err), format!("parse float error: {}", cause));
-        assert_eq!(format!("{:?}", err), format!("ParseFloatError({:?})", cause));
-        assert_eq!(format!("{:?}", err.cause().unwrap()), format!("{:?}", cause));
-    }
-
-    #[test]
-    fn tuple_wrapper_trait_str() {
-        let desc = "hello";
-        let err: &Error = &TupleWrapper::Other(desc);
-        assert_eq!(format!("{}", err), format!("Error: {}", desc));
-        assert_eq!(format!("{:?}", err), format!("Other({:?})", desc));
-        assert!(err.cause().is_none());
-    }
-
-    #[test]
-    fn tuple_wrapper_trait_two_fields() {
-        let invalid_utf8: Vec<u8> = vec![0, 159, 146, 150];
-        let cause = String::from_utf8(invalid_utf8.clone()).unwrap_err().utf8_error();
-        let err: &Error = &TupleWrapper::FromUtf8Error(cause.clone(), invalid_utf8.clone());
-        assert_eq!(format!("{}", err), format!("{desc} at index {pos}: {cause}", desc="utf8 error", pos=cause.valid_up_to(), cause=cause));
-        assert_eq!(format!("{:?}", err), format!("FromUtf8Error({:?}, {:?})", cause, invalid_utf8));
-        assert_eq!(format!("{:?}", err.cause().unwrap()), format!("{:?}", cause));
-    }
-
-    #[test]
-    fn tuple_wrapper_from() {
-        let cause = "one and a half times pi".parse::<f32>().unwrap_err();
-        let err = TupleWrapper::ParseFloatError(cause.clone());
-        let err_from: TupleWrapper = From::from(cause);
-        assert_eq!(err_from, err);
-    }
-
-    #[test]
-    fn tuple_wrapper_custom_from() {
-        let invalid_utf8: Vec<u8> = vec![0, 159, 146, 150];
-        let cause = String::from_utf8(invalid_utf8.clone()).unwrap_err();
-        let err = TupleWrapper::FromUtf8Error(cause.utf8_error().clone(), invalid_utf8);
-        let err_from: TupleWrapper = From::from(cause);
-        assert_eq!(err_from, err);
-    }
-
-    #[test]
-    fn tuple_wrapper_discard() {
-        let err: TupleWrapper = From::from("hello");
-        assert_eq!(format!("{}", err), format!("Discard"));
-        assert_eq!(format!("{:?}", err), format!("Discard"));
-        assert!(err.cause().is_none());
-    }
-
-    #[test]
-    fn tuple_wrapper_singleton() {
-        let err: TupleWrapper = TupleWrapper::Singleton;
-        assert_eq!(format!("{}", err), format!("Just a string"));
-        assert_eq!(format!("{:?}", err), format!("Singleton"));
-        assert!(err.cause().is_none());
-    }
-
-    quick_error! {
-        #[derive(Debug, PartialEq)]
-        pub enum StructWrapper {
-            // Utf8 Error
-            Utf8Error{ err: Utf8Error, hint: Option<&'static str> } {
-                cause(err)
-                display(me) -> ("{desc} at index {pos}: {err}", desc="utf8 error", pos=err.valid_up_to(), err=err)
-                from(err: Utf8Error) -> { err: err, hint: None }
-            }
-            // Utf8 Error
-            ExcessComma { descr: &'static str, } {
-                display("Error: {}", descr)
-            }
-        }
-    }
-
-    #[test]
-    fn struct_wrapper_err() {
-        let invalid_utf8: Vec<u8> = vec![0, 159, 146, 150];
-        let cause = String::from_utf8(invalid_utf8.clone()).unwrap_err().utf8_error();
-        let err: &Error = &StructWrapper::Utf8Error{ err: cause.clone(), hint: Some("nonsense") };
-        assert_eq!(format!("{}", err), format!("{desc} at index {pos}: {cause}", desc="utf8 error", pos=cause.valid_up_to(), cause=cause));
-        assert_eq!(format!("{:?}", err), format!("Utf8Error {{ err: {:?}, hint: {:?} }}", cause, Some("nonsense")));
-        assert_eq!(format!("{:?}", err.cause().unwrap()), format!("{:?}", cause));
-    }
-
-    #[test]
-    fn struct_wrapper_struct_from() {
-        let invalid_utf8: Vec<u8> = vec![0, 159, 146, 150];
-        let cause = String::from_utf8(invalid_utf8.clone()).unwrap_err().utf8_error();
-        let err = StructWrapper::Utf8Error{ err: cause.clone(), hint: None };
-        let err_from: StructWrapper = From::from(cause);
-        assert_eq!(err_from, err);
-    }
-
-    #[test]
-    fn struct_wrapper_excess_comma() {
-        let descr = "hello";
-        let err = StructWrapper::ExcessComma { descr: descr };
-        assert_eq!(format!("{}", err), format!("Error: {}", descr));
-        assert_eq!(format!("{:?}", err), format!("ExcessComma {{ descr: {:?} }}", descr));
-        assert!(err.cause().is_none());
-    }
-
-    quick_error! {
-        #[derive(Debug)]
-        pub enum ContextErr {
-            Float(src: String, err: ParseFloatError) {
-                context(s: &'a str, e: ParseFloatError) -> (s.to_string(), e)
-                display("Float error {:?}: {}", src, err)
-            }
-            Int { src: String, err: ParseIntError } {
-                context(s: &'a str, e: ParseIntError)
-                    -> {src: s.to_string(), err: e}
-                display("Int error {:?}: {}", src, err)
-            }
-            Utf8(path: PathBuf, err: Utf8Error) {
-                context(p: AsRef<Path>, e: Utf8Error)
-                    -> (p.as_ref().to_path_buf(), e)
-                display("Path error at {:?}: {}", path, err)
-            }
-            Utf8Str(s: String, err: ::std::io::Error) {
-                context(s: AsRef<str>, e: ::std::io::Error)
-                    -> (s.as_ref().to_string(), e)
-                display("Str error {:?}: {}", s, err)
-            }
-        }
-    }
-
-    #[test]
-    fn parse_float_error() {
-        fn parse_float(s: &str) -> Result<f32, ContextErr> {
-            Ok(try!(s.parse().context(s)))
-        }
-        assert_eq!(format!("{}", parse_float("12ab").unwrap_err()),
-            r#"Float error "12ab": invalid float literal"#);
-    }
-
-    #[test]
-    fn parse_int_error() {
-        fn parse_int(s: &str) -> Result<i32, ContextErr> {
-            Ok(try!(s.parse().context(s)))
-        }
-        assert_eq!(format!("{}", parse_int("12.5").unwrap_err()),
-            r#"Int error "12.5": invalid digit found in string"#);
-    }
-
-    #[test]
-    fn debug_context() {
-        fn parse_int(s: &str) -> i32 {
-            s.parse().context(s).unwrap()
-        }
-        assert_eq!(parse_int("12"), 12);
-        assert_eq!(format!("{:?}", "x".parse::<i32>().context("x")),
-            r#"Err(Context("x", ParseIntError { kind: InvalidDigit }))"#);
-    }
-
-    #[test]
-    fn path_context() {
-        fn parse_utf<P: AsRef<Path>>(s: &[u8], p: P)
-            -> Result<(), ContextErr>
-        {
-            try!(::std::str::from_utf8(s).context(p));
-            Ok(())
-        }
-        let etext = parse_utf(b"a\x80\x80", "/etc").unwrap_err().to_string();
-        assert!(etext.starts_with(
-            "Path error at \"/etc\": invalid utf-8"));
-        let etext = parse_utf(b"\x80\x80", PathBuf::from("/tmp")).unwrap_err()
-            .to_string();
-        assert!(etext.starts_with(
-            "Path error at \"/tmp\": invalid utf-8"));
-    }
-
-    #[test]
-    fn conditional_compilation() {
-        quick_error! {
-            #[allow(dead_code)]
-            #[derive(Debug)]
-            pub enum Test {
-                #[cfg(feature = "foo")]
-                Variant
-            }
-        }
-    }
-}
diff --git a/vendor/quick-error/vagga.yaml b/vendor/quick-error/vagga.yaml
deleted file mode 100644
index 71b9be44e..000000000
--- a/vendor/quick-error/vagga.yaml
+++ /dev/null
@@ -1,36 +0,0 @@
-commands:
-
-  cargo: !Command
-    description: Run any cargo command
-    container: ubuntu
-    run: [cargo]
-
-  test: !Command
-    description: Run unit tests
-    container: ubuntu
-    run: [cargo, test]
-
-  _bulk: !Command
-    description: Run `bulk` command (for version bookkeeping)
-    container: ubuntu
-    run: [bulk]
-
-containers:
-
-  ubuntu:
-    setup:
-    - !Ubuntu xenial
-    - !Install [ca-certificates, build-essential, vim]
-
-    - !TarInstall
-      url: "https://static.rust-lang.org/dist/rust-1.16.0-x86_64-unknown-linux-gnu.tar.gz"
-      script: "./install.sh --prefix=/usr \
-                --components=rustc,rust-std-x86_64-unknown-linux-gnu,cargo"
-    - &bulk !Tar
-      url: "https://github.com/tailhook/bulk/releases/download/v0.4.9/bulk-v0.4.9.tar.gz"
-      sha256: 23471a9986274bb4b7098c03e2eb7e1204171869b72c45385fcee1c64db2d111
-      path: /
-
-    environ:
-      HOME: /work/target
-      USER: pc