Adding debian version 1.65.0+dfsg1-2.debian/1.65.0+dfsg1-2

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

17 files changed, 1490 insertions, 0 deletions

diff --git a/vendor/pretty_assertions/.cargo-checksum.json b/vendor/pretty_assertions/.cargo-checksum.json
new file mode 100644
index 000000000..74431486b
--- /dev/null
+++ b/vendor/pretty_assertions/.cargo-checksum.json
@@ -0,0 +1 @@
+{"files":{"CHANGELOG.md":"b330969d16e38104c91ad0ff518af97b1b58137f40a6e834f6da3018d35ae988","Cargo.lock":"b154588bf85189f112a7c1506448f8813316772fe17550a847183db274e4a8b3","Cargo.toml":"35d70dee35b4d888e622d0f770231055a8780e95463b32473fda8023ff7ca047","LICENSE-APACHE":"c6596eb7be8581c18be736c846fb9173b69eccf6ef94c5135893ec56bd92ba08","LICENSE-MIT":"8c9612877aacfa1b42f5e80b679e6c3c93a7ba2bb99dfaf6e87e200dca4b4e6c","README.md":"6988c526027f6920587923a870b6b5f6d816bb9114abbd9c41f251af986eb11e","examples/pretty_assertion.png":"a9a43d098b548cd222056e8f7391cc071ccd07372e9c44d10e254c0a683c7562","examples/pretty_assertion.rs":"41d0527d286baebe09149e33a9359c3e30c7fbfddd41995db4facdee291fcd2c","examples/pretty_assertion_v0_6_1.png":"c07a7a8cd56ebeb840ae8095c024957ddac8a1d011288acf7928f79d85b39e3a","examples/standard_assertion.png":"be6f676deb51d06bcb33f36d194c82228d5585d91f58af590d9040012e38a0a8","examples/standard_assertion.rs":"b520df96e468ab2a6f8b692d12a548a5a6dcbb8a7fb02a91aaad06ec7f1f3a60","scripts/check":"f323d7c808c8d2cfd8d57ff00b453a9b7c7c95dc0f1a7dfcf3c4d2ead3243c72","scripts/install":"311dd0a011d7e91f9e7df497b2d3b8d77ab2c77b136b7168ad104c82794c5d69","scripts/publish":"bae69134256065f3cd35478c67873ae99af680fc7d2ce4506bd391beed8e35ae","src/lib.rs":"b9fc488ea96d9aa3a902e0bb10d7ca0f83d817b06bb8735f901044126835506a","src/printer.rs":"10cb18c1451c6101e778f7d8e1a51a1ec0208c0ef06cf67dbe30d4805cf02a45"},"package":"1cab0e7c02cf376875e9335e0ba1da535775beb5450d21e1dffca068818ed98b"}
\ No newline at end of file
diff --git a/vendor/pretty_assertions/CHANGELOG.md b/vendor/pretty_assertions/CHANGELOG.md
new file mode 100644
index 000000000..a5c81b75b
--- /dev/null
+++ b/vendor/pretty_assertions/CHANGELOG.md
@@ -0,0 +1,38 @@
+# Unreleased
+
+# v0.7.2
+
+- Fix macro hygiene for expansion in a `no_implicit_prelude` context ([#70](https://github.com/colin-kiegel/rust-pretty-assertions/issues/70), [@tommilligan](https://github.com/tommilligan))
+
+# v0.7.1
+
+- Fix a bug where multiline changes showed an unhelpful inline diff ([#66](https://github.com/colin-kiegel/rust-pretty-assertions/issues/66), [@tommilligan](https://github.com/tommilligan))
+
+# v0.7.0
+
+## Changed
+
+- Move from `difference` to `diff` for calculating diffs. The exact assertion messages generated may differ from previous versions. ([#52](https://github.com/colin-kiegel/rust-pretty-assertions/issues/52), [@tommilligan](https://github.com/tommilligan))
+
+For example, the following assertion message from `v0.7.0`:
+
+![pretty assertion](https://raw.githubusercontent.com/colin-kiegel/rust-pretty-assertions/2d2357ff56d22c51a86b2f1cfe6efcee9f5a8081/examples/pretty_assertion.png)
+
+Was previously rendered like this in `v0.6.1`:
+
+![pretty assertion](https://raw.githubusercontent.com/colin-kiegel/rust-pretty-assertions/2d2357ff56d22c51a86b2f1cfe6efcee9f5a8081/examples/pretty_assertion_v0_6_1.png)
+
+## Added
+
+- Support for unsized values ([#42](https://github.com/colin-kiegel/rust-pretty-assertions/issues/42), [@stanislav-tkach](https://github.com/stanislav-tkach))
+- Document the `Comparison` struct, which was previously hidden. This can be used to generate a pretty diff of two values without panicking. ([#52](https://github.com/colin-kiegel/rust-pretty-assertions/issues/52), [@tommilligan](https://github.com/tommilligan))
+
+## Fixed
+
+- Fix some unhygenic macro expansions ([#41](https://github.com/colin-kiegel/rust-pretty-assertions/issues/41), [@tommilligan](https://github.com/tommilligan))
+
+## Internal
+
+- Test Windows targets in CI ([#46](https://github.com/colin-kiegel/rust-pretty-assertions/issues/46), [@tommilligan](https://github.com/tommilligan))
+- Bump `ansi_term` version to 0.12 ([#34](https://github.com/colin-kiegel/rust-pretty-assertions/issues/34), [@waywardmonkeys](https://github.com/waywardmonkeys))
+- Code health improvements ([#34](https://github.com/colin-kiegel/rust-pretty-assertions/issues/34), [@waywardmonkeys](https://github.com/waywardmonkeys))
diff --git a/vendor/pretty_assertions/Cargo.lock b/vendor/pretty_assertions/Cargo.lock
new file mode 100644
index 000000000..8e433f023
--- /dev/null
+++ b/vendor/pretty_assertions/Cargo.lock
@@ -0,0 +1,102 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "ansi_term"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d52a9bb7ec0cf484c551830a7ce27bd20d67eac647e1befb56b0be4ee39a55d2"
+dependencies = [
+ "winapi",
+]
+
+[[package]]
+name = "ctor"
+version = "0.1.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e8f45d9ad417bcef4817d614a501ab55cdd96a6fdb24f49aab89a54acfd66b19"
+dependencies = [
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "diff"
+version = "0.1.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0e25ea47919b1560c4e3b7fe0aaab9becf5b84a10325ddf7db0f0ba5e1026499"
+
+[[package]]
+name = "output_vt100"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "53cdc5b785b7a58c5aad8216b3dfa114df64b0b06ae6e1501cef91df2fbdf8f9"
+dependencies = [
+ "winapi",
+]
+
+[[package]]
+name = "pretty_assertions"
+version = "0.7.2"
+dependencies = [
+ "ansi_term",
+ "ctor",
+ "diff",
+ "output_vt100",
+]
+
+[[package]]
+name = "proc-macro2"
+version = "1.0.24"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e0704ee1a7e00d7bb417d0770ea303c1bccbabf0ef1667dae92b5967f5f8a71"
+dependencies = [
+ "unicode-xid",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c3d0b9745dc2debf507c8422de05d7226cc1f0644216dfdfead988f9b1ab32a7"
+dependencies = [
+ "proc-macro2",
+]
+
+[[package]]
+name = "syn"
+version = "1.0.63"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8fd9bc7ccc2688b3344c2f48b9b546648b25ce0b20fc717ee7fa7981a8ca9717"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-xid",
+]
+
+[[package]]
+name = "unicode-xid"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f7fe0bb3479651439c9112f72b6c505038574c9fbb575ed1bf3b797fa39dd564"
+
+[[package]]
+name = "winapi"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
diff --git a/vendor/pretty_assertions/Cargo.toml b/vendor/pretty_assertions/Cargo.toml
new file mode 100644
index 000000000..3f4660d5a
--- /dev/null
+++ b/vendor/pretty_assertions/Cargo.toml
@@ -0,0 +1,36 @@
+# 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]
+edition = "2018"
+name = "pretty_assertions"
+version = "0.7.2"
+authors = ["Colin Kiegel <kiegel@gmx.de>", "Florent Fayolle <florent.fayolle69@gmail.com>", "Tom Milligan <code@tommilligan.net>"]
+description = "Overwrite `assert_eq!` and `assert_ne!` with drop-in replacements, adding colorful diffs."
+documentation = "https://docs.rs/pretty_assertions"
+readme = "README.md"
+keywords = ["assert", "diff", "pretty", "color"]
+categories = ["development-tools"]
+license = "MIT/Apache-2.0"
+repository = "https://github.com/colin-kiegel/rust-pretty-assertions"
+[dependencies.ansi_term]
+version = "0.12.1"
+
+[dependencies.diff]
+version = "0.1.12"
+[target."cfg(windows)".dependencies.ctor]
+version = "0.1.9"
+
+[target."cfg(windows)".dependencies.output_vt100]
+version = "0.1.2"
+[badges.travis-ci]
+repository = "colin-kiegel/rust-pretty-assertions"
diff --git a/vendor/pretty_assertions/LICENSE-APACHE b/vendor/pretty_assertions/LICENSE-APACHE
new file mode 100644
index 000000000..8f71f43fe
--- /dev/null
+++ b/vendor/pretty_assertions/LICENSE-APACHE
@@ -0,0 +1,202 @@
+                                 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/pretty_assertions/LICENSE-MIT b/vendor/pretty_assertions/LICENSE-MIT
new file mode 100644
index 000000000..48b7653f4
--- /dev/null
+++ b/vendor/pretty_assertions/LICENSE-MIT
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2016 rust-derive-builder contributors
+
+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/pretty_assertions/README.md b/vendor/pretty_assertions/README.md
new file mode 100644
index 000000000..cc9a6ef74
--- /dev/null
+++ b/vendor/pretty_assertions/README.md
@@ -0,0 +1,91 @@
+[![Build status](https://travis-ci.org/colin-kiegel/rust-pretty-assertions.svg?branch=master)](https://travis-ci.org/colin-kiegel/rust-pretty-assertions)
+[![Latest version](https://img.shields.io/crates/v/pretty-assertions.svg)](https://crates.io/crates/pretty-assertions)
+[![All downloads](https://img.shields.io/crates/d/pretty-assertions.svg)](https://crates.io/crates/pretty-assertions)
+[![Downloads of latest version](https://img.shields.io/crates/dv/pretty-assertions.svg)](https://crates.io/crates/pretty-assertions)
+
+# Pretty Assertions
+
+When writing tests in Rust, you'll probably use `assert_eq!(a, b)` _a lot_.
+
+If such a test fails, it will present all the details of `a` and `b`.
+But you have to spot the differences yourself, which is not always straightforward,
+like here:
+
+![standard assertion](https://raw.githubusercontent.com/colin-kiegel/rust-pretty-assertions/2d2357ff56d22c51a86b2f1cfe6efcee9f5a8081/examples/standard_assertion.png)
+
+Wouldn't that task be _much_ easier with a colorful diff?
+
+![pretty assertion](https://raw.githubusercontent.com/colin-kiegel/rust-pretty-assertions/2d2357ff56d22c51a86b2f1cfe6efcee9f5a8081/examples/pretty_assertion.png)
+
+Yep — and you only need **one line of code** to make it happen:
+
+```rust,ignore
+use pretty_assertions::{assert_eq, assert_ne};
+```
+
+<details>
+<summary>Show the example behind the screenshots above.</summary>
+
+```rust,ignore
+// 1. add the `pretty_assertions` dependency to `Cargo.toml`.
+// 2. insert this line at the top of each module, as needed
+use pretty_assertions::{assert_eq, assert_ne};
+
+fn main() {
+    #[derive(Debug, PartialEq)]
+    struct Foo {
+        lorem: &'static str,
+        ipsum: u32,
+        dolor: Result<String, String>,
+    }
+
+    let x = Some(Foo { lorem: "Hello World!", ipsum: 42, dolor: Ok("hey".to_string())});
+    let y = Some(Foo { lorem: "Hello Wrold!", ipsum: 42, dolor: Ok("hey ho!".to_string())});
+
+    assert_eq!(x, y);
+}
+```
+
+</details>
+
+## Tip
+
+Specify it as [`[dev-dependencies]`](http://doc.crates.io/specifying-dependencies.html#development-dependencies)
+and it will only be used for compiling tests, examples, and benchmarks.
+This way the compile time of `cargo build` won't be affected!
+
+Also add `#[cfg(test)]` to your `use` statements, like this:
+
+```rust,ignore
+#[cfg(test)]
+use pretty_assertions::{assert_eq, assert_ne};
+```
+
+## Note
+
+- Since `Rust 2018` edition, you need to declare
+  `use pretty_assertions::{assert_eq, assert_ne};` per module.
+  Before you would write `#[macro_use] extern crate pretty_assertions;`.
+- The replacement is only effective in your own crate, not in other libraries
+  you include.
+- `assert_ne` is also switched to multi-line presentation, but does _not_ show
+  a diff.
+- Under Windows, the terminal state is modified to properly handle VT100
+  escape sequences, which may break display for certain use cases.
+- The minimum supported rust version (MSRV) is 1.35.0
+
+## License
+
+Licensed under either of
+
+- Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or <http://www.apache.org/licenses/LICENSE-2.0>)
+- MIT license ([LICENSE-MIT](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/pretty_assertions/examples/pretty_assertion.png b/vendor/pretty_assertions/examples/pretty_assertion.png
new file mode 100644
index 000000000..1e5b645f0
--- /dev/null
+++ b/vendor/pretty_assertions/examples/pretty_assertion.png
diff --git a/vendor/pretty_assertions/examples/pretty_assertion.rs b/vendor/pretty_assertions/examples/pretty_assertion.rs
new file mode 100644
index 000000000..63246c6d7
--- /dev/null
+++ b/vendor/pretty_assertions/examples/pretty_assertion.rs
@@ -0,0 +1,3 @@
+use pretty_assertions::assert_eq;
+
+include!("standard_assertion.rs");
diff --git a/vendor/pretty_assertions/examples/pretty_assertion_v0_6_1.png b/vendor/pretty_assertions/examples/pretty_assertion_v0_6_1.png
new file mode 100644
index 000000000..dc192d081
--- /dev/null
+++ b/vendor/pretty_assertions/examples/pretty_assertion_v0_6_1.png
diff --git a/vendor/pretty_assertions/examples/standard_assertion.png b/vendor/pretty_assertions/examples/standard_assertion.png
new file mode 100644
index 000000000..03ea059b7
--- /dev/null
+++ b/vendor/pretty_assertions/examples/standard_assertion.png
diff --git a/vendor/pretty_assertions/examples/standard_assertion.rs b/vendor/pretty_assertions/examples/standard_assertion.rs
new file mode 100644
index 000000000..fddd512f4
--- /dev/null
+++ b/vendor/pretty_assertions/examples/standard_assertion.rs
@@ -0,0 +1,21 @@
+fn main() {
+    #[derive(Debug, PartialEq)]
+    struct Foo {
+        lorem: &'static str,
+        ipsum: u32,
+        dolor: Result<String, String>,
+    }
+
+    let x = Some(Foo {
+        lorem: "Hello World!",
+        ipsum: 42,
+        dolor: Ok("hey".to_string()),
+    });
+    let y = Some(Foo {
+        lorem: "Hello Wrold!",
+        ipsum: 42,
+        dolor: Ok("hey ho!".to_string()),
+    });
+
+    assert_eq!(x, y);
+}
diff --git a/vendor/pretty_assertions/scripts/check b/vendor/pretty_assertions/scripts/check
new file mode 100755
index 000000000..43fb3a9b3
--- /dev/null
+++ b/vendor/pretty_assertions/scripts/check
@@ -0,0 +1,9 @@
+#!/bin/bash
+
+set -exuo pipefail
+
+cargo fmt -- --check
+cargo audit --deny warnings
+cargo clippy --all-targets -- -D warnings
+cargo test
+cargo doc --no-deps
diff --git a/vendor/pretty_assertions/scripts/install b/vendor/pretty_assertions/scripts/install
new file mode 100755
index 000000000..92577640c
--- /dev/null
+++ b/vendor/pretty_assertions/scripts/install
@@ -0,0 +1,6 @@
+#!/bin/bash
+
+set -exuo pipefail
+
+rustup component add rustfmt clippy
+cargo install cargo-audit cargo-tarpaulin
diff --git a/vendor/pretty_assertions/scripts/publish b/vendor/pretty_assertions/scripts/publish
new file mode 100755
index 000000000..e904f03eb
--- /dev/null
+++ b/vendor/pretty_assertions/scripts/publish
@@ -0,0 +1,11 @@
+#!/bin/bash
+
+set -euxo pipefail
+
+# Don't log the cargo login token while authenticating
+set +x
+echo "cargo login ***********************************"
+cargo login "${CARGO_LOGIN_TOKEN}"
+set -x
+
+cargo publish
diff --git a/vendor/pretty_assertions/src/lib.rs b/vendor/pretty_assertions/src/lib.rs
new file mode 100644
index 000000000..5c1787533
--- /dev/null
+++ b/vendor/pretty_assertions/src/lib.rs
@@ -0,0 +1,475 @@
+//! # Pretty Assertions
+//!
+//! When writing tests in Rust, you'll probably use `assert_eq!(a, b)` _a lot_.
+//!
+//! If such a test fails, it will present all the details of `a` and `b`.
+//! But you have to spot the differences yourself, which is not always straightforward,
+//! like here:
+//!
+//! ![standard assertion](https://raw.githubusercontent.com/colin-kiegel/rust-pretty-assertions/2d2357ff56d22c51a86b2f1cfe6efcee9f5a8081/examples/standard_assertion.png)
+//!
+//! Wouldn't that task be _much_ easier with a colorful diff?
+//!
+//! ![pretty assertion](https://raw.githubusercontent.com/colin-kiegel/rust-pretty-assertions/2d2357ff56d22c51a86b2f1cfe6efcee9f5a8081/examples/pretty_assertion.png)
+//!
+//! Yep — and you only need **one line of code** to make it happen:
+//!
+//! ```rust
+//! use pretty_assertions::{assert_eq, assert_ne};
+//! ```
+//!
+//! <details>
+//! <summary>Show the example behind the screenshots above.</summary>
+//!
+//! ```rust,should_panic
+//! // 1. add the `pretty_assertions` dependency to `Cargo.toml`.
+//! // 2. insert this line at the top of each module, as needed
+//! use pretty_assertions::{assert_eq, assert_ne};
+//!
+//! #[derive(Debug, PartialEq)]
+//! struct Foo {
+//!     lorem: &'static str,
+//!     ipsum: u32,
+//!     dolor: Result<String, String>,
+//! }
+//!
+//! let x = Some(Foo { lorem: "Hello World!", ipsum: 42, dolor: Ok("hey".to_string())});
+//! let y = Some(Foo { lorem: "Hello Wrold!", ipsum: 42, dolor: Ok("hey ho!".to_string())});
+//!
+//! assert_eq!(x, y);
+//! ```
+//! </details>
+//!
+//! ## Tip
+//!
+//! Specify it as [`[dev-dependencies]`](http://doc.crates.io/specifying-dependencies.html#development-dependencies)
+//! and it will only be used for compiling tests, examples, and benchmarks.
+//! This way the compile time of `cargo build` won't be affected!
+//!
+//! Also add `#[cfg(test)]` to your `use` statements, like this:
+//!
+//! ```rust
+//! #[cfg(test)]
+//! use pretty_assertions::{assert_eq, assert_ne};
+//! ```
+//!
+//! ## Note
+//!
+//! * Since `Rust 2018` edition, you need to declare
+//!   `use pretty_assertions::{assert_eq, assert_ne};` per module.
+//!   Before you would write `#[macro_use] extern crate pretty_assertions;`.
+//! * The replacement is only effective in your own crate, not in other libraries
+//!   you include.
+//! * `assert_ne` is also switched to multi-line presentation, but does _not_ show
+//!   a diff.
+
+#![deny(clippy::all, missing_docs, unsafe_code)]
+
+pub use ansi_term::Style;
+use std::fmt::{self, Debug, Display};
+
+mod printer;
+
+#[cfg(windows)]
+use ctor::*;
+#[cfg(windows)]
+#[ctor]
+fn init() {
+    output_vt100::try_init().ok(); // Do not panic on fail
+}
+
+/// A comparison of two values.
+///
+/// Where both values implement `Debug`, the comparison can be displayed as a pretty diff.
+///
+/// ```
+/// use pretty_assertions::Comparison;
+///
+/// print!("{}", Comparison::new(&123, &134));
+/// ```
+///
+/// The values may have different types, although in practice they are usually the same.
+pub struct Comparison<'a, TLeft, TRight>
+where
+    TLeft: ?Sized,
+    TRight: ?Sized,
+{
+    left: &'a TLeft,
+    right: &'a TRight,
+}
+
+impl<'a, TLeft, TRight> Comparison<'a, TLeft, TRight>
+where
+    TLeft: ?Sized,
+    TRight: ?Sized,
+{
+    /// Store two values to be compared in future.
+    ///
+    /// Expensive diffing is deferred until calling `Debug::fmt`.
+    pub fn new(left: &'a TLeft, right: &'a TRight) -> Comparison<'a, TLeft, TRight> {
+        Comparison { left, right }
+    }
+}
+
+impl<'a, TLeft, TRight> Display for Comparison<'a, TLeft, TRight>
+where
+    TLeft: Debug + ?Sized,
+    TRight: Debug + ?Sized,
+{
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        // To diff arbitary types, render them as debug strings
+        let left_debug = format!("{:#?}", self.left);
+        let right_debug = format!("{:#?}", self.right);
+        // And then diff the debug output
+        printer::write_header(f)?;
+        printer::write_lines(f, &left_debug, &right_debug)
+    }
+}
+
+/// Asserts that two expressions are equal to each other (using [`PartialEq`]).
+///
+/// On panic, this macro will print a diff derived from [`Debug`] representation of
+/// each value.
+///
+/// This is a drop in replacement for [`std::assert_eq!`].
+/// You can provide a custom panic message if desired.
+///
+/// # Examples
+///
+/// ```
+/// use pretty_assertions::assert_eq;
+///
+/// let a = 3;
+/// let b = 1 + 2;
+/// assert_eq!(a, b);
+///
+/// assert_eq!(a, b, "we are testing addition with {} and {}", a, b);
+/// ```
+#[macro_export]
+macro_rules! assert_eq {
+    ($left:expr , $right:expr,) => ({
+        $crate::assert_eq!($left, $right)
+    });
+    ($left:expr , $right:expr) => ({
+        match (&($left), &($right)) {
+            (left_val, right_val) => {
+                if !(*left_val == *right_val) {
+                    ::std::panic!("assertion failed: `(left == right)`\
+                          \n\
+                          \n{}\
+                          \n",
+                           $crate::Comparison::new(left_val, right_val))
+                }
+            }
+        }
+    });
+    ($left:expr , $right:expr, $($arg:tt)*) => ({
+        match (&($left), &($right)) {
+            (left_val, right_val) => {
+                if !(*left_val == *right_val) {
+                    ::std::panic!("assertion failed: `(left == right)`: {}\
+                          \n\
+                          \n{}\
+                          \n",
+                           format_args!($($arg)*),
+                           $crate::Comparison::new(left_val, right_val))
+                }
+            }
+        }
+    });
+}
+
+/// Asserts that two expressions are not equal to each other (using [`PartialEq`]).
+///
+/// On panic, this macro will print the values of the expressions with their
+/// [`Debug`] representations.
+///
+/// This is a drop in replacement for [`std::assert_ne!`].
+/// You can provide a custom panic message if desired.
+///
+/// # Examples
+///
+/// ```
+/// use pretty_assertions::assert_ne;
+///
+/// let a = 3;
+/// let b = 2;
+/// assert_ne!(a, b);
+///
+/// assert_ne!(a, b, "we are testing that the values are not equal");
+/// ```
+#[macro_export]
+macro_rules! assert_ne {
+    ($left:expr, $right:expr) => ({
+        $crate::assert_ne!(@ $left, $right, "", "");
+    });
+    ($left:expr, $right:expr,) => ({
+        $crate::assert_ne!(@ $left, $right, "", "");
+    });
+    ($left:expr, $right:expr, $($arg:tt)+) => ({
+        $crate::assert_ne!(@ $left, $right, ": ", $($arg)+);
+    });
+    (@ $left:expr, $right:expr, $maybe_semicolon:expr, $($arg:tt)+) => ({
+        match (&($left), &($right)) {
+            (left_val, right_val) => {
+                if *left_val == *right_val {
+                  let left_dbg = ::std::format!("{:?}", &*left_val);
+                  let right_dbg = ::std::format!("{:?}", &*right_val);
+                  if left_dbg != right_dbg {
+
+                      ::std::panic!("assertion failed: `(left != right)`{}{}\
+                            \n\
+                            \n{}\
+                            \n{}: According to the `PartialEq` implementation, both of the values \
+                              are partially equivalent, even if the `Debug` outputs differ.\
+                            \n\
+                            \n",
+                             $maybe_semicolon,
+                             format_args!($($arg)+),
+                             $crate::Comparison::new(left_val, right_val),
+                             $crate::Style::new()
+                                 .bold()
+                                 .underline()
+                                 .paint("Note"))
+                  }
+
+                  ::std::panic!("assertion failed: `(left != right)`{}{}\
+                        \n\
+                        \n{}:\
+                        \n{:#?}\
+                        \n\
+                        \n",
+                         $maybe_semicolon,
+                         format_args!($($arg)+),
+                         $crate::Style::new().bold().paint("Both sides"),
+                         left_val)
+                }
+            }
+        }
+    });
+}
+
+#[cfg(test)]
+#[allow(clippy::eq_op)]
+#[no_implicit_prelude]
+mod test {
+    mod assert_eq {
+        use ::std::string::{String, ToString};
+
+        #[test]
+        fn passes() {
+            let a = "some value";
+            crate::assert_eq!(a, a);
+        }
+
+        #[test]
+        fn passes_unsized() {
+            let a: &[u8] = b"e";
+            crate::assert_eq!(*a, *a);
+        }
+
+        #[test]
+        fn passes_comparable_types() {
+            let s0: &'static str = "foo";
+            let s1: String = "foo".to_string();
+            crate::assert_eq!(s0, s1);
+        }
+
+        #[test]
+        #[should_panic(expected = r#"assertion failed: `(left == right)`
+
+Diff < left / right > :
+<666
+>999
+
+"#)]
+        fn fails() {
+            crate::assert_eq!(666, 999);
+        }
+
+        #[test]
+        #[should_panic(expected = r#"assertion failed: `(left == right)`
+
+Diff < left / right > :
+<666
+>999
+
+"#)]
+        fn fails_trailing_comma() {
+            crate::assert_eq!(666, 999,);
+        }
+
+        #[test]
+        #[should_panic(expected = r#"assertion failed: `(left == right)`
+
+Diff < left / right > :
+ [
+     101,
+>    101,
+ ]
+
+"#)]
+        fn fails_unsized() {
+            let a: &[u8] = b"e";
+            let b: &[u8] = b"ee";
+            crate::assert_eq!(*a, *b);
+        }
+
+        #[test]
+        #[should_panic(
+            expected = r#"assertion failed: `(left == right)`: custom panic message
+
+Diff < left / right > :
+<666
+>999
+
+"#
+        )]
+        fn fails_custom() {
+            crate::assert_eq!(666, 999, "custom panic message");
+        }
+
+        #[test]
+        #[should_panic(
+            expected = r#"assertion failed: `(left == right)`: custom panic message
+
+Diff < left / right > :
+<666
+>999
+
+"#
+        )]
+        fn fails_custom_trailing_comma() {
+            crate::assert_eq!(666, 999, "custom panic message",);
+        }
+    }
+
+    mod assert_ne {
+        use ::std::string::{String, ToString};
+
+        #[test]
+        fn passes() {
+            let a = "a";
+            let b = "b";
+            crate::assert_ne!(a, b);
+        }
+
+        #[test]
+        fn passes_unsized() {
+            let a: &[u8] = b"e";
+            let b: &[u8] = b"ee";
+            crate::assert_ne!(*a, *b);
+        }
+
+        #[test]
+        fn passes_comparable_types() {
+            let s0: &'static str = "foo";
+            let s1: String = "bar".to_string();
+            crate::assert_ne!(s0, s1);
+        }
+
+        #[test]
+        #[should_panic(expected = r#"assertion failed: `(left != right)`
+
+Both sides:
+666
+"#)]
+        fn fails() {
+            crate::assert_ne!(666, 666);
+        }
+
+        #[test]
+        #[should_panic(expected = r#"assertion failed: `(left != right)`
+
+Both sides:
+666
+"#)]
+        fn fails_trailing_comma() {
+            crate::assert_ne!(666, 666,);
+        }
+
+        #[test]
+        #[should_panic(expected = r#"assertion failed: `(left != right)`
+
+Both sides:
+[
+    101,
+]
+
+"#)]
+        fn fails_unsized() {
+            let a: &[u8] = b"e";
+            crate::assert_ne!(*a, *a);
+        }
+
+        #[test]
+        #[should_panic(
+            expected = r#"assertion failed: `(left != right)`: custom panic message
+
+Both sides:
+666
+"#
+        )]
+        fn fails_custom() {
+            crate::assert_ne!(666, 666, "custom panic message");
+        }
+
+        #[test]
+        #[should_panic(
+            expected = r#"assertion failed: `(left != right)`: custom panic message
+
+Both sides:
+666
+"#
+        )]
+        fn fails_custom_trailing_comma() {
+            crate::assert_ne!(666, 666, "custom panic message",);
+        }
+
+        // If the values are equal but their debug outputs are not
+        // show a specific warning
+
+        #[test]
+        #[should_panic(expected = r#"assertion failed: `(left != right)`
+
+Diff < left / right > :
+<-0.0
+>0.0
+
+Note: According to the `PartialEq` implementation, both of the values are partially equivalent, even if the `Debug` outputs differ.
+
+"#)]
+        fn assert_ne_partial() {
+            // Workaround for https://github.com/rust-lang/rust/issues/47619
+            // can be removed, when we require rust 1.25 or higher
+            struct Foo(f32);
+
+            use ::std::fmt;
+            impl fmt::Debug for Foo {
+                fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+                    ::std::write!(f, "{:.1?}", self.0)
+                }
+            }
+
+            impl ::std::cmp::PartialEq for Foo {
+                fn eq(&self, other: &Self) -> bool {
+                    self.0 == other.0
+                }
+            }
+
+            crate::assert_ne!(Foo(-0.0), Foo(0.0));
+        }
+
+        // Regression tests
+
+        #[test]
+        #[should_panic]
+        fn assert_ne_non_empty_return() {
+            fn not_zero(x: u32) -> u32 {
+                crate::assert_ne!(x, 0);
+                x
+            }
+            not_zero(0);
+        }
+    }
+}
diff --git a/vendor/pretty_assertions/src/printer.rs b/vendor/pretty_assertions/src/printer.rs
new file mode 100644
index 000000000..172b1ed6c
--- /dev/null
+++ b/vendor/pretty_assertions/src/printer.rs
@@ -0,0 +1,474 @@
+use ansi_term::{
+    Colour::{Fixed, Green, Red},
+    Style,
+};
+use std::fmt;
+
+macro_rules! paint {
+    ($f:expr, $colour:expr, $fmt:expr, $($args:tt)*) => (
+        write!($f, "{}", $colour.paint(format!($fmt, $($args)*)))
+    )
+}
+
+const SIGN_RIGHT: char = '>'; // + > →
+const SIGN_LEFT: char = '<'; // - < ←
+
+/// Present the diff output for two mutliline strings in a pretty, colorised manner.
+pub(crate) fn write_header(f: &mut fmt::Formatter) -> fmt::Result {
+    writeln!(
+        f,
+        "{} {} / {} :",
+        Style::new().bold().paint("Diff"),
+        Red.paint(format!("{} left", SIGN_LEFT)),
+        Green.paint(format!("right {}", SIGN_RIGHT))
+    )
+}
+
+/// Delay formatting this deleted chunk until later.
+///
+/// It can be formatted as a whole chunk by calling `flush`, or the inner value
+/// obtained with `take` for further processing.
+#[derive(Default)]
+struct LatentDeletion<'a> {
+    // The most recent deleted line we've seen
+    value: Option<&'a str>,
+    // The number of deleted lines we've seen, including the current value
+    count: usize,
+}
+
+impl<'a> LatentDeletion<'a> {
+    /// Set the chunk value.
+    fn set(&mut self, value: &'a str) {
+        self.value = Some(value);
+        self.count += 1;
+    }
+
+    /// Take the underlying chunk value, if it's suitable for inline diffing.
+    ///
+    /// If there is no value of we've seen more than one line, return `None`.
+    fn take(&mut self) -> Option<&'a str> {
+        if self.count == 1 {
+            self.value.take()
+        } else {
+            None
+        }
+    }
+
+    /// If a value is set, print it as a whole chunk, using the given formatter.
+    ///
+    /// If a value is not set, reset the count to zero (as we've called `flush` twice,
+    /// without seeing another deletion. Therefore the line in the middle was something else).
+    fn flush<TWrite: fmt::Write>(&mut self, f: &mut TWrite) -> fmt::Result {
+        if let Some(value) = self.value {
+            paint!(f, Red, "{}{}", SIGN_LEFT, value)?;
+            writeln!(f)?;
+            self.value = None;
+        } else {
+            self.count = 0;
+        }
+
+        Ok(())
+    }
+}
+
+// Adapted from:
+// https://github.com/johannhof/difference.rs/blob/c5749ad7d82aa3d480c15cb61af9f6baa08f116f/examples/github-style.rs
+// Credits johannhof (MIT License)
+
+/// Present the diff output for two mutliline strings in a pretty, colorised manner.
+pub(crate) fn write_lines<TWrite: fmt::Write>(
+    f: &mut TWrite,
+    left: &str,
+    right: &str,
+) -> fmt::Result {
+    let diff = ::diff::lines(left, right);
+
+    let mut changes = diff.into_iter().peekable();
+    let mut previous_deletion = LatentDeletion::default();
+
+    while let Some(change) = changes.next() {
+        match (change, changes.peek()) {
+            // If the text is unchanged, just print it plain
+            (::diff::Result::Both(value, _), _) => {
+                previous_deletion.flush(f)?;
+                writeln!(f, " {}", value)?;
+            }
+            // Defer any deletions to next loop
+            (::diff::Result::Left(deleted), _) => {
+                previous_deletion.flush(f)?;
+                previous_deletion.set(deleted);
+            }
+            // Underlying diff library should never return this sequence
+            (::diff::Result::Right(_), Some(::diff::Result::Left(_))) => {
+                panic!("insertion followed by deletion");
+            }
+            // If we're being followed by more insertions, don't inline diff
+            (::diff::Result::Right(inserted), Some(::diff::Result::Right(_))) => {
+                previous_deletion.flush(f)?;
+                paint!(f, Green, "{}{}", SIGN_RIGHT, inserted)?;
+                writeln!(f)?;
+            }
+            // Otherwise, check if we need to inline diff with the previous line (if it was a deletion)
+            (::diff::Result::Right(inserted), _) => {
+                if let Some(deleted) = previous_deletion.take() {
+                    write_inline_diff(f, deleted, inserted)?;
+                } else {
+                    previous_deletion.flush(f)?;
+                    paint!(f, Green, "{}{}", SIGN_RIGHT, inserted)?;
+                    writeln!(f)?;
+                }
+            }
+        };
+    }
+
+    previous_deletion.flush(f)?;
+    Ok(())
+}
+
+/// Group character styling for an inline diff, to prevent wrapping each single
+/// character in terminal styling codes.
+///
+/// Styles are applied automatically each time a new style is given in `write_with_style`.
+struct InlineWriter<'a, Writer> {
+    f: &'a mut Writer,
+    style: Style,
+}
+
+impl<'a, Writer> InlineWriter<'a, Writer>
+where
+    Writer: fmt::Write,
+{
+    fn new(f: &'a mut Writer) -> Self {
+        InlineWriter {
+            f,
+            style: Style::new(),
+        }
+    }
+
+    /// Push a new character into the buffer, specifying the style it should be written in.
+    fn write_with_style(&mut self, c: &char, style: Style) -> fmt::Result {
+        // If the style is the same as previously, just write character
+        if style == self.style {
+            write!(self.f, "{}", c)?;
+        } else {
+            // Close out previous style
+            write!(self.f, "{}", self.style.suffix())?;
+
+            // Store new style and start writing it
+            write!(self.f, "{}{}", style.prefix(), c)?;
+            self.style = style;
+        }
+        Ok(())
+    }
+
+    /// Finish any existing style and reset to default state.
+    fn finish(&mut self) -> fmt::Result {
+        // Close out previous style
+        writeln!(self.f, "{}", self.style.suffix())?;
+        self.style = Default::default();
+        Ok(())
+    }
+}
+
+/// Format a single line to show an inline diff of the two strings given.
+///
+/// The given strings should not have a trailing newline.
+///
+/// The output of this function will be two lines, each with a trailing newline.
+fn write_inline_diff<TWrite: fmt::Write>(f: &mut TWrite, left: &str, right: &str) -> fmt::Result {
+    let diff = ::diff::chars(left, right);
+    let mut writer = InlineWriter::new(f);
+
+    // Print the left string on one line, with differences highlighted
+    let light = Red.into();
+    let heavy = Red.on(Fixed(52)).bold();
+    writer.write_with_style(&SIGN_LEFT, light)?;
+    for change in diff.iter() {
+        match change {
+            ::diff::Result::Both(value, _) => writer.write_with_style(value, light)?,
+            ::diff::Result::Left(value) => writer.write_with_style(value, heavy)?,
+            _ => (),
+        }
+    }
+    writer.finish()?;
+
+    // Print the right string on one line, with differences highlighted
+    let light = Green.into();
+    let heavy = Green.on(Fixed(22)).bold();
+    writer.write_with_style(&SIGN_RIGHT, light)?;
+    for change in diff.iter() {
+        match change {
+            ::diff::Result::Both(value, _) => writer.write_with_style(value, light)?,
+            ::diff::Result::Right(value) => writer.write_with_style(value, heavy)?,
+            _ => (),
+        }
+    }
+    writer.finish()
+}
+
+#[cfg(test)]
+mod test {
+    use super::*;
+
+    // ANSI terminal codes used in our outputs.
+    //
+    // Interpolate these into test strings to make expected values easier to read.
+    const RED_LIGHT: &str = "\u{1b}[31m";
+    const GREEN_LIGHT: &str = "\u{1b}[32m";
+    const RED_HEAVY: &str = "\u{1b}[1;48;5;52;31m";
+    const GREEN_HEAVY: &str = "\u{1b}[1;48;5;22;32m";
+    const RESET: &str = "\u{1b}[0m";
+
+    /// Given that both of our diff printing functions have the same
+    /// type signature, we can reuse the same test code for them.
+    ///
+    /// This could probably be nicer with traits!
+    fn check_printer<TPrint>(printer: TPrint, left: &str, right: &str, expected: &str)
+    where
+        TPrint: Fn(&mut String, &str, &str) -> fmt::Result,
+    {
+        let mut actual = String::new();
+        printer(&mut actual, left, right).expect("printer function failed");
+
+        println!(
+            "## left ##\n\
+             {}\n\
+             ## right ##\n\
+             {}\n\
+             ## actual diff ##\n\
+             {}\n\
+             ## expected diff ##\n\
+             {}",
+            left, right, actual, expected
+        );
+        assert_eq!(actual, expected);
+    }
+
+    #[test]
+    fn write_inline_diff_empty() {
+        let left = "";
+        let right = "";
+        let expected = format!(
+            "{red_light}<{reset}\n\
+             {green_light}>{reset}\n",
+            red_light = RED_LIGHT,
+            green_light = GREEN_LIGHT,
+            reset = RESET,
+        );
+
+        check_printer(write_inline_diff, left, right, &expected);
+    }
+
+    #[test]
+    fn write_inline_diff_added() {
+        let left = "";
+        let right = "polymerase";
+        let expected = format!(
+            "{red_light}<{reset}\n\
+             {green_light}>{reset}{green_heavy}polymerase{reset}\n",
+            red_light = RED_LIGHT,
+            green_light = GREEN_LIGHT,
+            green_heavy = GREEN_HEAVY,
+            reset = RESET,
+        );
+
+        check_printer(write_inline_diff, left, right, &expected);
+    }
+
+    #[test]
+    fn write_inline_diff_removed() {
+        let left = "polyacrylamide";
+        let right = "";
+        let expected = format!(
+            "{red_light}<{reset}{red_heavy}polyacrylamide{reset}\n\
+             {green_light}>{reset}\n",
+            red_light = RED_LIGHT,
+            green_light = GREEN_LIGHT,
+            red_heavy = RED_HEAVY,
+            reset = RESET,
+        );
+
+        check_printer(write_inline_diff, left, right, &expected);
+    }
+
+    #[test]
+    fn write_inline_diff_changed() {
+        let left = "polymerase";
+        let right = "polyacrylamide";
+        let expected = format!(
+            "{red_light}<poly{reset}{red_heavy}me{reset}{red_light}ra{reset}{red_heavy}s{reset}{red_light}e{reset}\n\
+             {green_light}>poly{reset}{green_heavy}ac{reset}{green_light}r{reset}{green_heavy}yl{reset}{green_light}a{reset}{green_heavy}mid{reset}{green_light}e{reset}\n",
+            red_light = RED_LIGHT,
+            green_light = GREEN_LIGHT,
+            red_heavy = RED_HEAVY,
+            green_heavy = GREEN_HEAVY,
+            reset = RESET,
+        );
+
+        check_printer(write_inline_diff, left, right, &expected);
+    }
+
+    /// If one of our strings is empty, it should not be shown at all in the output.
+    #[test]
+    fn write_lines_empty_string() {
+        let left = "";
+        let right = "content";
+        let expected = format!(
+            "{green_light}>content{reset}\n",
+            green_light = GREEN_LIGHT,
+            reset = RESET,
+        );
+
+        check_printer(write_lines, left, right, &expected);
+    }
+
+    /// Realistic multiline struct diffing case.
+    #[test]
+    fn write_lines_struct() {
+        let left = r#"Some(
+    Foo {
+        lorem: "Hello World!",
+        ipsum: 42,
+        dolor: Ok(
+            "hey",
+        ),
+    },
+)"#;
+        let right = r#"Some(
+    Foo {
+        lorem: "Hello Wrold!",
+        ipsum: 42,
+        dolor: Ok(
+            "hey ho!",
+        ),
+    },
+)"#;
+        let expected = format!(
+            r#" Some(
+     Foo {{
+{red_light}<        lorem: "Hello W{reset}{red_heavy}o{reset}{red_light}rld!",{reset}
+{green_light}>        lorem: "Hello Wr{reset}{green_heavy}o{reset}{green_light}ld!",{reset}
+         ipsum: 42,
+         dolor: Ok(
+{red_light}<            "hey",{reset}
+{green_light}>            "hey{reset}{green_heavy} ho!{reset}{green_light}",{reset}
+         ),
+     }},
+ )
+"#,
+            red_light = RED_LIGHT,
+            red_heavy = RED_HEAVY,
+            green_light = GREEN_LIGHT,
+            green_heavy = GREEN_HEAVY,
+            reset = RESET,
+        );
+
+        check_printer(write_lines, left, right, &expected);
+    }
+
+    /// Relistic multiple line chunks
+    ///
+    /// We can't support realistic line diffing in large blocks
+    /// (also, it's unclear how usefult this is)
+    ///
+    /// So if we have more than one line in a single removal chunk, disable inline diffing.
+    #[test]
+    fn write_lines_multiline_block() {
+        let left = r#"Proboscis
+Cabbage"#;
+        let right = r#"Probed
+Caravaggio"#;
+        let expected = format!(
+            r#"{red_light}<Proboscis{reset}
+{red_light}<Cabbage{reset}
+{green_light}>Probed{reset}
+{green_light}>Caravaggio{reset}
+"#,
+            red_light = RED_LIGHT,
+            green_light = GREEN_LIGHT,
+            reset = RESET,
+        );
+
+        check_printer(write_lines, left, right, &expected);
+    }
+
+    /// Single deletion line, multiple insertions - no inline diffing.
+    #[test]
+    fn write_lines_multiline_insert() {
+        let left = r#"Cabbage"#;
+        let right = r#"Probed
+Caravaggio"#;
+        let expected = format!(
+            r#"{red_light}<Cabbage{reset}
+{green_light}>Probed{reset}
+{green_light}>Caravaggio{reset}
+"#,
+            red_light = RED_LIGHT,
+            green_light = GREEN_LIGHT,
+            reset = RESET,
+        );
+
+        check_printer(write_lines, left, right, &expected);
+    }
+
+    /// Multiple deletion, single insertion - no inline diffing.
+    #[test]
+    fn write_lines_multiline_delete() {
+        let left = r#"Proboscis
+Cabbage"#;
+        let right = r#"Probed"#;
+        let expected = format!(
+            r#"{red_light}<Proboscis{reset}
+{red_light}<Cabbage{reset}
+{green_light}>Probed{reset}
+"#,
+            red_light = RED_LIGHT,
+            green_light = GREEN_LIGHT,
+            reset = RESET,
+        );
+
+        check_printer(write_lines, left, right, &expected);
+    }
+
+    /// Regression test for multiline highlighting issue
+    #[test]
+    fn write_lines_issue12() {
+        let left = r#"[
+    0,
+    0,
+    0,
+    128,
+    10,
+    191,
+    5,
+    64,
+]"#;
+        let right = r#"[
+    84,
+    248,
+    45,
+    64,
+]"#;
+        let expected = format!(
+            r#" [
+{red_light}<    0,{reset}
+{red_light}<    0,{reset}
+{red_light}<    0,{reset}
+{red_light}<    128,{reset}
+{red_light}<    10,{reset}
+{red_light}<    191,{reset}
+{red_light}<    5,{reset}
+{green_light}>    84,{reset}
+{green_light}>    248,{reset}
+{green_light}>    45,{reset}
+     64,
+ ]
+"#,
+            red_light = RED_LIGHT,
+            green_light = GREEN_LIGHT,
+            reset = RESET,
+        );
+
+        check_printer(write_lines, left, right, &expected);
+    }
+}