Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

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

9 files changed, 741 insertions, 0 deletions

diff --git a/vendor/crossbeam/.cargo-checksum.json b/vendor/crossbeam/.cargo-checksum.json
new file mode 100644
index 000000000..0bd859983
--- /dev/null
+++ b/vendor/crossbeam/.cargo-checksum.json
@@ -0,0 +1 @@
+{"files":{"CHANGELOG.md":"e8dcdd4c84fced11ce3e9be9246dd511e9d09b0b36497c6e569ed0427b57424a","Cargo.toml":"a1452bb8649a66814e473799942aa624243bab0e5257a5b11ce994253b41ecb4","LICENSE-APACHE":"6f712474a3e3be1386d2d0c29449850ea788da64d35cff0fc8799acf741e9ecd","LICENSE-MIT":"5734ed989dfca1f625b40281ee9f4530f91b2411ec01cb748223e7eb87e201ab","README.md":"d1d81cf88e580608f27bf4d2bb7f6f2d01c2c1f1d26be86ec1daa7aa455e9f62","no_atomic.rs":"a2621c1b029c614fb0ab8e3f5cda2e839df88d90d26133181c1b901965f7eec4","src/lib.rs":"e896ef1e4326db5202cebdd57dd606f96113d5a8700e746bfe8909978ac84a7f","tests/subcrates.rs":"69cbe766a855ad6278cc969a61ba871eba3594afb5c2d3c647dff5b794e160ab"},"package":"4ae5588f6b3c3cb05239e90bd110f257254aecd01e4635400391aeae07497845"}
\ No newline at end of file
diff --git a/vendor/crossbeam/CHANGELOG.md b/vendor/crossbeam/CHANGELOG.md
new file mode 100644
index 000000000..f756fbb73
--- /dev/null
+++ b/vendor/crossbeam/CHANGELOG.md
@@ -0,0 +1,93 @@
+# Version 0.8.1
+
+- Support targets that do not have atomic CAS on stable Rust (#698)
+
+# Version 0.8.0
+
+- Bump the minimum supported Rust version to 1.36.
+- Bump `crossbeam-channel` to `0.5`.
+- Bump `crossbeam-deque` to `0.8`.
+- Bump `crossbeam-epoch` to `0.9`.
+- Bump `crossbeam-queue` to `0.3`.
+- Bump `crossbeam-utils` to `0.8`.
+
+# Version 0.7.3
+
+- Fix breakage with nightly feature due to rust-lang/rust#65214.
+- Bump `crossbeam-channel` to `0.4`.
+- Bump `crossbeam-epoch` to `0.8`.
+- Bump `crossbeam-queue` to `0.2`.
+- Bump `crossbeam-utils` to `0.7`.
+
+# Version 0.7.2
+
+- Bump `crossbeam-channel` to `0.3.9`.
+- Bump `crossbeam-epoch` to `0.7.2`.
+- Bump `crossbeam-utils` to `0.6.6`.
+
+# Version 0.7.1
+
+- Bump `crossbeam-utils` to `0.6.5`.
+
+# Version 0.7.0
+
+- Remove `ArcCell`, `MsQueue`, and `TreiberStack`.
+- Change the interface of `ShardedLock` to match `RwLock`.
+- Add `SegQueue::len()`.
+- Rename `SegQueue::try_pop()` to `SegQueue::pop()`.
+- Change the return type of `SegQueue::pop()` to `Result`.
+- Introduce `ArrayQueue`.
+- Update dependencies.
+
+# Version 0.6.0
+
+- Update dependencies.
+
+# Version 0.5.0
+
+- Update `crossbeam-channel` to 0.3.
+- Update `crossbeam-utils` to 0.6.
+- Add `AtomicCell`, `SharedLock`, and `WaitGroup`.
+
+# Version 0.4.1
+
+- Fix a double-free bug in `MsQueue` and `SegQueue`.
+
+# Version 0.4
+
+- Switch to the new implementation of epoch-based reclamation in
+  [`crossbeam-epoch`](https://github.com/crossbeam-rs/crossbeam-epoch), fixing numerous bugs in the
+  old implementation.  Its API is changed in a backward-incompatible way.
+- Switch to the new implementation of `CachePadded` and scoped thread in
+  [`crossbeam-utils`](https://github.com/crossbeam-rs/crossbeam-utils).  The scoped thread API is
+  changed in a backward-incompatible way.
+- Switch to the new implementation of Chase-Lev deque in
+  [`crossbeam-deque`](https://github.com/crossbeam-rs/crossbeam-deque).  Its API is changed in a
+  backward-incompatible way.
+- Export channel implemented in
+  [`crossbeam-channel`](https://github.com/crossbeam-rs/crossbeam-channel).
+- Remove `AtomicOption`.
+- Implement `Default` and `From` traits.
+
+# Version 0.3
+
+- Introduced `ScopedThreadBuilder` with the ability to name threads and set stack size
+- `Worker` methods in the Chase-Lev deque don't require mutable access anymore
+- Fixed a bug when unblocking `pop()` in `MsQueue`
+- Implemented `Drop` for `MsQueue`, `SegQueue`, and `TreiberStack`
+- Implemented `Default` for `TreiberStack`
+- Added `is_empty` to `SegQueue`
+- Renamed `mem::epoch` to `epoch`
+- Other bug fixes
+
+# Version 0.2
+
+- Changed existing non-blocking `pop` methods to `try_pop`
+- Added blocking `pop` support to Michael-Scott queue
+- Added Chase-Lev work-stealing deque
+
+# Version 0.1
+
+- Added [epoch-based memory management](http://aturon.github.io/blog/2015/08/27/epoch/)
+- Added Michael-Scott queue
+- Added Segmented array queue
diff --git a/vendor/crossbeam/Cargo.toml b/vendor/crossbeam/Cargo.toml
new file mode 100644
index 000000000..71710f835
--- /dev/null
+++ b/vendor/crossbeam/Cargo.toml
@@ -0,0 +1,59 @@
+# 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 = "crossbeam"
+version = "0.8.1"
+authors = ["The Crossbeam Project Developers"]
+exclude = ["/.github", "/ci"]
+description = "Tools for concurrent programming"
+homepage = "https://github.com/crossbeam-rs/crossbeam"
+documentation = "https://docs.rs/crossbeam"
+keywords = ["atomic", "garbage", "non-blocking", "lock-free", "rcu"]
+categories = ["concurrency", "memory-management", "data-structures", "no-std"]
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/crossbeam-rs/crossbeam"
+[dependencies.cfg-if]
+version = "1"
+
+[dependencies.crossbeam-channel]
+version = "0.5"
+optional = true
+default-features = false
+
+[dependencies.crossbeam-deque]
+version = "0.8"
+optional = true
+default-features = false
+
+[dependencies.crossbeam-epoch]
+version = "0.9.5"
+optional = true
+default-features = false
+
+[dependencies.crossbeam-queue]
+version = "0.3.2"
+optional = true
+default-features = false
+
+[dependencies.crossbeam-utils]
+version = "0.8.5"
+default-features = false
+[dev-dependencies.rand]
+version = "0.8"
+
+[features]
+alloc = ["crossbeam-epoch/alloc", "crossbeam-queue/alloc"]
+default = ["std"]
+nightly = ["crossbeam-epoch/nightly", "crossbeam-utils/nightly", "crossbeam-queue/nightly"]
+std = ["alloc", "crossbeam-channel/std", "crossbeam-deque/std", "crossbeam-epoch/std", "crossbeam-queue/std", "crossbeam-utils/std"]
diff --git a/vendor/crossbeam/LICENSE-APACHE b/vendor/crossbeam/LICENSE-APACHE
new file mode 100644
index 000000000..bb9abdd7f
--- /dev/null
+++ b/vendor/crossbeam/LICENSE-APACHE
@@ -0,0 +1,201 @@
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+6. Trademarks. This License does not grant permission to use the trade
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+   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
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diff --git a/vendor/crossbeam/LICENSE-MIT b/vendor/crossbeam/LICENSE-MIT
new file mode 100644
index 000000000..068d491fd
--- /dev/null
+++ b/vendor/crossbeam/LICENSE-MIT
@@ -0,0 +1,27 @@
+The MIT License (MIT)
+
+Copyright (c) 2019 The Crossbeam Project Developers
+
+Permission is hereby granted, free of charge, to any
+person obtaining a copy of this software and associated
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+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
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+TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
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+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/crossbeam/README.md b/vendor/crossbeam/README.md
new file mode 100644
index 000000000..1ed435c0a
--- /dev/null
+++ b/vendor/crossbeam/README.md
@@ -0,0 +1,158 @@
+# Crossbeam
+
+[![Build Status](https://github.com/crossbeam-rs/crossbeam/workflows/CI/badge.svg)](
+https://github.com/crossbeam-rs/crossbeam/actions)
+[![License](https://img.shields.io/badge/license-MIT_OR_Apache--2.0-blue.svg)](
+https://github.com/crossbeam-rs/crossbeam#license)
+[![Cargo](https://img.shields.io/crates/v/crossbeam.svg)](
+https://crates.io/crates/crossbeam)
+[![Documentation](https://docs.rs/crossbeam/badge.svg)](
+https://docs.rs/crossbeam)
+[![Rust 1.36+](https://img.shields.io/badge/rust-1.36+-lightgray.svg)](
+https://www.rust-lang.org)
+[![chat](https://img.shields.io/discord/569610676205781012.svg?logo=discord)](https://discord.com/invite/JXYwgWZ)
+
+This crate provides a set of tools for concurrent programming:
+
+#### Atomics
+
+* [`AtomicCell`], a thread-safe mutable memory location.<sup>(no_std)</sup>
+* [`AtomicConsume`], for reading from primitive atomic types with "consume" ordering.<sup>(no_std)</sup>
+
+#### Data structures
+
+* [`deque`], work-stealing deques for building task schedulers.
+* [`ArrayQueue`], a bounded MPMC queue that allocates a fixed-capacity buffer on construction.<sup>(alloc)</sup>
+* [`SegQueue`], an unbounded MPMC queue that allocates small buffers, segments, on demand.<sup>(alloc)</sup>
+
+#### Memory management
+
+* [`epoch`], an epoch-based garbage collector.<sup>(alloc)</sup>
+
+#### Thread synchronization
+
+* [`channel`], multi-producer multi-consumer channels for message passing.
+* [`Parker`], a thread parking primitive.
+* [`ShardedLock`], a sharded reader-writer lock with fast concurrent reads.
+* [`WaitGroup`], for synchronizing the beginning or end of some computation.
+
+#### Utilities
+
+* [`Backoff`], for exponential backoff in spin loops.<sup>(no_std)</sup>
+* [`CachePadded`], for padding and aligning a value to the length of a cache line.<sup>(no_std)</sup>
+* [`scope`], for spawning threads that borrow local variables from the stack.
+
+*Features marked with <sup>(no_std)</sup> can be used in `no_std` environments.*<br/>
+*Features marked with <sup>(alloc)</sup> can be used in `no_std` environments, but only if `alloc`
+feature is enabled.*
+
+[`AtomicCell`]: https://docs.rs/crossbeam/*/crossbeam/atomic/struct.AtomicCell.html
+[`AtomicConsume`]: https://docs.rs/crossbeam/*/crossbeam/atomic/trait.AtomicConsume.html
+[`deque`]: https://docs.rs/crossbeam/*/crossbeam/deque/index.html
+[`ArrayQueue`]: https://docs.rs/crossbeam/*/crossbeam/queue/struct.ArrayQueue.html
+[`SegQueue`]: https://docs.rs/crossbeam/*/crossbeam/queue/struct.SegQueue.html
+[`channel`]: https://docs.rs/crossbeam/*/crossbeam/channel/index.html
+[`Parker`]: https://docs.rs/crossbeam/*/crossbeam/sync/struct.Parker.html
+[`ShardedLock`]: https://docs.rs/crossbeam/*/crossbeam/sync/struct.ShardedLock.html
+[`WaitGroup`]: https://docs.rs/crossbeam/*/crossbeam/sync/struct.WaitGroup.html
+[`epoch`]: https://docs.rs/crossbeam/*/crossbeam/epoch/index.html
+[`Backoff`]: https://docs.rs/crossbeam/*/crossbeam/utils/struct.Backoff.html
+[`CachePadded`]: https://docs.rs/crossbeam/*/crossbeam/utils/struct.CachePadded.html
+[`scope`]: https://docs.rs/crossbeam/*/crossbeam/fn.scope.html
+
+## Crates
+
+The main `crossbeam` crate just [re-exports](src/lib.rs) tools from
+smaller subcrates:
+
+* [`crossbeam-channel`](crossbeam-channel)
+  provides multi-producer multi-consumer channels for message passing.
+* [`crossbeam-deque`](crossbeam-deque)
+  provides work-stealing deques, which are primarily intended for building task schedulers.
+* [`crossbeam-epoch`](crossbeam-epoch)
+  provides epoch-based garbage collection for building concurrent data structures.
+* [`crossbeam-queue`](crossbeam-queue)
+  provides concurrent queues that can be shared among threads.
+* [`crossbeam-utils`](crossbeam-utils)
+  provides atomics, synchronization primitives, scoped threads, and other utilities.
+
+There is one more experimental subcrate that is not yet included in `crossbeam`:
+
+* [`crossbeam-skiplist`](crossbeam-skiplist)
+  provides concurrent maps and sets based on lock-free skip lists.
+
+## Usage
+
+Add this to your `Cargo.toml`:
+
+```toml
+[dependencies]
+crossbeam = "0.8"
+```
+
+## Compatibility
+
+Crossbeam supports stable Rust releases going back at least six months,
+and every time the minimum supported Rust version is increased, a new minor
+version is released. Currently, the minimum supported Rust version is 1.36.
+
+## Contributing
+
+Crossbeam welcomes contribution from everyone in the form of suggestions, bug reports,
+pull requests, and feedback. 💛
+
+If you need ideas for contribution, there are several ways to get started:
+
+* Found a bug or have a feature request?
+  [Submit an issue](https://github.com/crossbeam-rs/crossbeam/issues/new)!
+* Issues and PRs labeled with
+  [feedback wanted](https://github.com/crossbeam-rs/crossbeam/issues?utf8=%E2%9C%93&q=is%3Aopen+sort%3Aupdated-desc+label%3A%22feedback+wanted%22+)
+  need feedback from users and contributors.
+* Issues labeled with
+  [good first issue](https://github.com/crossbeam-rs/crossbeam/issues?q=is%3Aissue+is%3Aopen+sort%3Aupdated-desc+label%3A%22good+first+issue%22)
+  are relatively easy starter issues.
+
+#### RFCs
+
+We also have the [RFCs](https://github.com/crossbeam-rs/rfcs) repository for more
+high-level discussion, which is the place where we brainstorm ideas and propose
+substantial changes to Crossbeam.
+
+You are welcome to participate in any open
+[issues](https://github.com/crossbeam-rs/rfcs/issues?q=is%3Aissue+is%3Aopen+sort%3Aupdated-desc)
+or
+[pull requests](https://github.com/crossbeam-rs/rfcs/pulls?q=is%3Apr+is%3Aopen+sort%3Aupdated-desc).
+
+#### Learning resources
+
+If you'd like to learn more about concurrency and non-blocking data structures, there's a
+list of learning resources in our [wiki](https://github.com/crossbeam-rs/rfcs/wiki),
+which includes relevant blog posts, papers, videos, and other similar projects.
+
+Another good place to visit is [merged RFCs](https://github.com/crossbeam-rs/rfcs/tree/master/text).
+They contain elaborate descriptions and rationale for features we've introduced to
+Crossbeam, but keep in mind that some of the written information is now out of date.
+
+#### Conduct
+
+The Crossbeam project adheres to the
+[Rust Code of Conduct](https://github.com/rust-lang/rust/blob/master/CODE_OF_CONDUCT.md).
+This describes the minimum behavior expected from all contributors.
+
+## 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.
+
+Some Crossbeam subcrates have additional licensing notices.
+Take a look at other readme files in this repository for more information.
+
+#### 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/crossbeam/no_atomic.rs b/vendor/crossbeam/no_atomic.rs
new file mode 100644
index 000000000..522b3b8ac
--- /dev/null
+++ b/vendor/crossbeam/no_atomic.rs
@@ -0,0 +1,59 @@
+// This file is @generated by no_atomic.sh.
+// It is not intended for manual editing.
+
+const NO_ATOMIC_CAS: &[&str] = &[
+    "avr-unknown-gnu-atmega328",
+    "msp430-none-elf",
+    "riscv32i-unknown-none-elf",
+    "riscv32imc-unknown-none-elf",
+    "thumbv4t-none-eabi",
+    "thumbv6m-none-eabi",
+];
+#[allow(dead_code)]
+const NO_ATOMIC_64: &[&str] = &[
+    "arm-linux-androideabi",
+    "armebv7r-none-eabi",
+    "armebv7r-none-eabihf",
+    "armv4t-unknown-linux-gnueabi",
+    "armv5te-unknown-linux-gnueabi",
+    "armv5te-unknown-linux-musleabi",
+    "armv5te-unknown-linux-uclibceabi",
+    "armv7r-none-eabi",
+    "armv7r-none-eabihf",
+    "hexagon-unknown-linux-musl",
+    "mips-unknown-linux-gnu",
+    "mips-unknown-linux-musl",
+    "mips-unknown-linux-uclibc",
+    "mipsel-unknown-linux-gnu",
+    "mipsel-unknown-linux-musl",
+    "mipsel-unknown-linux-uclibc",
+    "mipsel-unknown-none",
+    "mipsisa32r6-unknown-linux-gnu",
+    "mipsisa32r6el-unknown-linux-gnu",
+    "powerpc-unknown-linux-gnu",
+    "powerpc-unknown-linux-gnuspe",
+    "powerpc-unknown-linux-musl",
+    "powerpc-unknown-netbsd",
+    "powerpc-unknown-openbsd",
+    "powerpc-wrs-vxworks",
+    "powerpc-wrs-vxworks-spe",
+    "riscv32gc-unknown-linux-gnu",
+    "riscv32gc-unknown-linux-musl",
+    "riscv32imac-unknown-none-elf",
+    "thumbv7em-none-eabi",
+    "thumbv7em-none-eabihf",
+    "thumbv7m-none-eabi",
+    "thumbv8m.base-none-eabi",
+    "thumbv8m.main-none-eabi",
+    "thumbv8m.main-none-eabihf",
+    "mipsel-sony-psp",
+    "thumbv4t-none-eabi",
+    "thumbv6m-none-eabi",
+];
+#[allow(dead_code)]
+const NO_ATOMIC: &[&str] = &[
+    "avr-unknown-gnu-atmega328",
+    "msp430-none-elf",
+    "riscv32i-unknown-none-elf",
+    "riscv32imc-unknown-none-elf",
+];
diff --git a/vendor/crossbeam/src/lib.rs b/vendor/crossbeam/src/lib.rs
new file mode 100644
index 000000000..9bc3ec111
--- /dev/null
+++ b/vendor/crossbeam/src/lib.rs
@@ -0,0 +1,96 @@
+//! Tools for concurrent programming.
+//!
+//! ## Atomics
+//!
+//! * [`AtomicCell`], a thread-safe mutable memory location.
+//! * [`AtomicConsume`], for reading from primitive atomic types with "consume" ordering.
+//!
+//! ## Data structures
+//!
+//! * [`deque`], work-stealing deques for building task schedulers.
+//! * [`ArrayQueue`], a bounded MPMC queue that allocates a fixed-capacity buffer on construction.
+//! * [`SegQueue`], an unbounded MPMC queue that allocates small buffers, segments, on demand.
+//!
+//! ## Memory management
+//!
+//! * [`epoch`], an epoch-based garbage collector.
+//!
+//! ## Thread synchronization
+//!
+//! * [`channel`], multi-producer multi-consumer channels for message passing.
+//! * [`Parker`], a thread parking primitive.
+//! * [`ShardedLock`], a sharded reader-writer lock with fast concurrent reads.
+//! * [`WaitGroup`], for synchronizing the beginning or end of some computation.
+//!
+//! ## Utilities
+//!
+//! * [`Backoff`], for exponential backoff in spin loops.
+//! * [`CachePadded`], for padding and aligning a value to the length of a cache line.
+//! * [`scope`], for spawning threads that borrow local variables from the stack.
+//!
+//! [`AtomicCell`]: atomic::AtomicCell
+//! [`AtomicConsume`]: atomic::AtomicConsume
+//! [`ArrayQueue`]: queue::ArrayQueue
+//! [`SegQueue`]: queue::SegQueue
+//! [`Parker`]: sync::Parker
+//! [`ShardedLock`]: sync::ShardedLock
+//! [`WaitGroup`]: sync::WaitGroup
+//! [`Backoff`]: utils::Backoff
+//! [`CachePadded`]: utils::CachePadded
+
+#![doc(test(
+    no_crate_inject,
+    attr(
+        deny(warnings, rust_2018_idioms),
+        allow(dead_code, unused_assignments, unused_variables)
+    )
+))]
+#![warn(
+    missing_docs,
+    missing_debug_implementations,
+    rust_2018_idioms,
+    unreachable_pub
+)]
+#![cfg_attr(not(feature = "std"), no_std)]
+
+pub use crossbeam_utils::atomic;
+
+pub mod utils {
+    //! Miscellaneous utilities.
+    //!
+    //! * [`Backoff`], for exponential backoff in spin loops.
+    //! * [`CachePadded`], for padding and aligning a value to the length of a cache line.
+
+    pub use crossbeam_utils::Backoff;
+    pub use crossbeam_utils::CachePadded;
+}
+
+use cfg_if::cfg_if;
+
+cfg_if! {
+    if #[cfg(feature = "alloc")] {
+        #[doc(inline)]
+        pub use crossbeam_epoch as epoch;
+
+        #[doc(inline)]
+        pub use crossbeam_queue as queue;
+    }
+}
+
+cfg_if! {
+    if #[cfg(feature = "std")] {
+        #[doc(inline)]
+        pub use crossbeam_deque as deque;
+
+        #[doc(inline)]
+        pub use crossbeam_channel as channel;
+        pub use crossbeam_channel::select;
+
+        pub use crossbeam_utils::sync;
+
+        #[cfg(not(crossbeam_loom))]
+        pub use crossbeam_utils::thread;
+        #[cfg(not(crossbeam_loom))]
+        pub use crossbeam_utils::thread::scope;
+    }
+}
diff --git a/vendor/crossbeam/tests/subcrates.rs b/vendor/crossbeam/tests/subcrates.rs
new file mode 100644
index 000000000..21b99fb0e
--- /dev/null
+++ b/vendor/crossbeam/tests/subcrates.rs
@@ -0,0 +1,47 @@
+//! Makes sure subcrates are properly re-exported.
+
+use crossbeam::select;
+
+#[test]
+fn channel() {
+    let (s, r) = crossbeam::channel::bounded(1);
+
+    select! {
+        send(s, 0) -> res => res.unwrap(),
+        recv(r) -> res => assert!(res.is_ok()),
+    }
+}
+
+#[test]
+fn deque() {
+    let w = crossbeam::deque::Worker::new_fifo();
+    w.push(1);
+    let _ = w.pop();
+}
+
+#[test]
+fn epoch() {
+    crossbeam::epoch::pin();
+}
+
+#[test]
+fn queue() {
+    let a = crossbeam::queue::ArrayQueue::new(10);
+    let _ = a.push(1);
+    let _ = a.pop();
+}
+
+#[test]
+fn utils() {
+    crossbeam::utils::CachePadded::new(7);
+
+    crossbeam::scope(|scope| {
+        scope.spawn(|_| ());
+    })
+    .unwrap();
+
+    crossbeam::thread::scope(|scope| {
+        scope.spawn(|_| ());
+    })
+    .unwrap();
+}