mozilla-bmo1757571.patch
branchfirefox99
changeset 1173 56ecd2ae6e61
parent 1172 7bdeb580be51
child 1174 90e3d0cf8567
--- a/mozilla-bmo1757571.patch	Mon Apr 04 10:22:27 2022 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,1082 +0,0 @@
-diff --git a/Cargo.lock b/Cargo.lock
---- a/Cargo.lock
-+++ b/Cargo.lock
-@@ -972,13 +972,13 @@
-  "cfg-if 1.0.0",
- ]
- 
- [[package]]
- name = "crossbeam-channel"
--version = "0.5.2"
--source = "registry+https://github.com/rust-lang/crates.io-index"
--checksum = "e54ea8bc3fb1ee042f5aace6e3c6e025d3874866da222930f70ce62aceba0bfa"
-+version = "0.5.4"
-+source = "registry+https://github.com/rust-lang/crates.io-index"
-+checksum = "5aaa7bd5fb665c6864b5f963dd9097905c54125909c7aa94c9e18507cdbe6c53"
- dependencies = [
-  "cfg-if 1.0.0",
-  "crossbeam-utils 0.8.6",
- ]
- 
-diff --git a/third_party/rust/crossbeam-channel/.cargo-checksum.json b/third_party/rust/crossbeam-channel/.cargo-checksum.json
---- a/third_party/rust/crossbeam-channel/.cargo-checksum.json
-+++ b/third_party/rust/crossbeam-channel/.cargo-checksum.json
-@@ -1 +1 @@
--{"files":{"CHANGELOG.md":"e70d1a5fa6697a8b24e193e3934975317df12279c167b90fcb9616291792197c","Cargo.lock":"0f4e59f28bdd52c4781d102fc7d1f16d1ea417aaec0a4846432444a4019b2537","Cargo.toml":"c8334f658b699a1a0e25d997d752a9493a627f9ddcb7aab739c7319ea583882f","LICENSE-APACHE":"a60eea817514531668d7e00765731449fe14d059d3249e0bc93b36de45f759f2","LICENSE-MIT":"5734ed989dfca1f625b40281ee9f4530f91b2411ec01cb748223e7eb87e201ab","LICENSE-THIRD-PARTY":"b16db96b93b1d7cf7bea533f572091ec6bca3234fbe0a83038be772ff391a44c","README.md":"415a71d4978cfd338a6ae1f1b41284652eccd277a815542c304647dc437a8274","benches/crossbeam.rs":"96cb1abd23cac3ef8a7174a802e94609926b555bb02c9658c78723d433f1dd92","examples/fibonacci.rs":"4e88fa40048cdc31e9c7bb60347d46f92543d7ddf39cab3b52bfe44affdb6a02","examples/matching.rs":"63c250e164607a7a9f643d46f107bb5da846d49e89cf9069909562d20e530f71","examples/stopwatch.rs":"d02121258f08d56f1eb7997e19bcb9bacb6836cfa0abbba90a9e59d8a50ae5cf","src/channel.rs":"a9baaad2f414c38cd324a60ac9375ca58462ce6662217683648e9b66cec43a8c","src/context.rs":"ff4d39639ddf16aaab582d4a5f3d10ef2c71afe1abbf4e60f3d9d2ddbd72c230","src/counter.rs":"c49a9f44587888850edeb62f7c8ecd1acecb39c836834254ff3ac934c478440a","src/err.rs":"fdbde7279a1e74973e5c7d3e835a97836229a357fe465c0ba1a37f2a012d1bef","src/flavors/array.rs":"853c2ad068f912cfb49877bcd41e241f34b25026b709bf0629523f19952e3adc","src/flavors/at.rs":"65bf870b3ddb14738256706b0276f2656ad1fe9cd8eb91737489868edd088e92","src/flavors/list.rs":"50dbe59616c39b5aa184470023ce0cfb1cb0dbd92e1577375d299446981527c0","src/flavors/mod.rs":"3d9d43bc38b0adb18c96c995c2bd3421d8e33ab6c30b20c3c467d21d48e485dc","src/flavors/never.rs":"0e7921922d00c711552fb063c63c78192fa6ddc0762fb81c1713b847495ec39a","src/flavors/tick.rs":"38a479b9f4a72a5ccb9c407a1e7b44d36b6ad0f4e214e39266b12b9564c803dc","src/flavors/zero.rs":"012a53f56b86df22ce49866da95e5f457fb99a18a098f0f64779c6d1cdd7092f","src/lib.rs":"3a65706d4124844ffc4c8cb1f8cc779631ec94f449f85cbb68364ad3619404f1","src/select.rs":"66eb10a6cbdf8dd0869f2a7cac9992fdaee36c9e2a01d708d39d7c794572935b","src/select_macro.rs":"96bc9acb9a22588a4e733b0ab0761ad2be9a6b3e03744e8fc9c6de9ae433b696","src/utils.rs":"746fe315d6cfc832e3dda35e5055c0fd5c99907f1303b2ea7eacc4e37c8527e1","src/waker.rs":"591ee70bf62ccad5aa2fac7b92d444183b02790a79c024f016c78de2396d08a3","tests/after.rs":"0154a8e152880db17a20514ecdd49dabc361d3629858d119b9746b5e932c780c","tests/array.rs":"e5f25e8991863a9a86d61a66be646d04feae527f35b1697fd215b97af4383736","tests/golang.rs":"dc85669c9c4e902b1bb263d00f5cb6f9ecb6d42b19fe53425b55ce97c887da49","tests/iter.rs":"25dc02135bbae9d47a30f9047661648e66bdc134e40ba78bc2fbacbb8b3819bc","tests/list.rs":"de865ef097f3bcb35c1c814554e6108fed43b3dbb1533c8bbcf8688cceb6b6ab","tests/mpsc.rs":"401aa3c6923815058881ddce98070df68ebab283913c89c007436bb8af7ca0ea","tests/never.rs":"ee40c4fc4dd5af4983fae8de6927f52b81174d222c162f745b26c4a6c7108e4f","tests/ready.rs":"d349702f123925a0781b48d677e6dcf64fc5d1fc788a7bf1e151a3d57e81871c","tests/same_channel.rs":"2bab761443671e841e1b2476bd8082d75533a2f6be7946f5dbcee67cdc82dccb","tests/select.rs":"d20259a45f387cbce80c2c876ae81ea3883f36ea01c5151c159d58c362f6ba07","tests/select_macro.rs":"d3af2dc98e0dd03dc4ffab464b8ccb2f8b7504e8bb830948a04c015b92f0b296","tests/thread_locals.rs":"a1ce59e2aff69161621c0cb215eb6ea238088c06a31a8507a74cf179fd5a4299","tests/tick.rs":"5f697bd14c48505d932e82065b5302ef668e1cc19cac18e8ac22e0c83c221c1d","tests/zero.rs":"afbd838001d4196daddf17133e60ccea31529cc48ee01e245ac0d6366d1e30b9"},"package":"e54ea8bc3fb1ee042f5aace6e3c6e025d3874866da222930f70ce62aceba0bfa"}
-\ No newline at end of file
-+{"files":{"CHANGELOG.md":"0f549e63930d1e576f117ee9249c84276eadbe6fb95818680c042c6c0af8a807","Cargo.lock":"834da9468c17c8e1b7fe457764257f4dfdaa24bc98cbdfedf3af4f3d4f5c1e6a","Cargo.toml":"1296a016c4c23d38a35b3d737ee8285fcaaf7d23b7bbb5a3484cefe56b7ca32a","LICENSE-APACHE":"a60eea817514531668d7e00765731449fe14d059d3249e0bc93b36de45f759f2","LICENSE-MIT":"5734ed989dfca1f625b40281ee9f4530f91b2411ec01cb748223e7eb87e201ab","LICENSE-THIRD-PARTY":"b16db96b93b1d7cf7bea533f572091ec6bca3234fbe0a83038be772ff391a44c","README.md":"415a71d4978cfd338a6ae1f1b41284652eccd277a815542c304647dc437a8274","benches/crossbeam.rs":"96cb1abd23cac3ef8a7174a802e94609926b555bb02c9658c78723d433f1dd92","examples/fibonacci.rs":"4e88fa40048cdc31e9c7bb60347d46f92543d7ddf39cab3b52bfe44affdb6a02","examples/matching.rs":"63c250e164607a7a9f643d46f107bb5da846d49e89cf9069909562d20e530f71","examples/stopwatch.rs":"d02121258f08d56f1eb7997e19bcb9bacb6836cfa0abbba90a9e59d8a50ae5cf","src/channel.rs":"3bbf69df6c3f0071a44bab0139a749447604f5ffa5e45acc2998803dee066522","src/context.rs":"ff4d39639ddf16aaab582d4a5f3d10ef2c71afe1abbf4e60f3d9d2ddbd72c230","src/counter.rs":"c49a9f44587888850edeb62f7c8ecd1acecb39c836834254ff3ac934c478440a","src/err.rs":"44cb2024ee6b0cd6fd24996430e53720769f64b4ac35016bc3e05cb9db48681d","src/flavors/array.rs":"0743fb71a8adc8d95143b1cdae996823dddb7ab7fb7139eb6e0cdf733ff231ee","src/flavors/at.rs":"1db64919593b7c14f838c16a22732515f1e716d2d5f6cc639f42631380e545cd","src/flavors/list.rs":"017b66a84ada393d11d1730297426338244b115944a4d631573447641a66bed6","src/flavors/mod.rs":"3d9d43bc38b0adb18c96c995c2bd3421d8e33ab6c30b20c3c467d21d48e485dc","src/flavors/never.rs":"747da857aa1a7601641f23f4930e6ad00ebaf50456d9be5c7aa270e2ecc24dcb","src/flavors/tick.rs":"69b2dfe0186bc8b9fd7a73e32da59d2656d8150da1e00fba92a412e0907568a3","src/flavors/zero.rs":"1edd8e5114daa5b82ec9f4a715c0389a9de02cce64de0f71b4225868dad99a99","src/lib.rs":"3a65706d4124844ffc4c8cb1f8cc779631ec94f449f85cbb68364ad3619404f1","src/select.rs":"63dbfde7098dac1424f1cc884f6b8364f3bf3e06527691dde628ff6c416a7f35","src/select_macro.rs":"582a033cc0a51917fd5197dfb66677e9d7982c013414e75ae78b4a740189a56d","src/utils.rs":"b4d38e39a7d7774729458b1b39253377a55657d377c483d30b32e42a0a0092e3","src/waker.rs":"2114bd84f35b2c654d1914127e0380e17a5c20d8ec1e20449af3d653cad27c64","tests/after.rs":"0154a8e152880db17a20514ecdd49dabc361d3629858d119b9746b5e932c780c","tests/array.rs":"e0f3814328c79727a85df3aee0409701849dabfeaaa2f70721e14396fbaba1cd","tests/golang.rs":"dc85669c9c4e902b1bb263d00f5cb6f9ecb6d42b19fe53425b55ce97c887da49","tests/iter.rs":"25dc02135bbae9d47a30f9047661648e66bdc134e40ba78bc2fbacbb8b3819bc","tests/list.rs":"de865ef097f3bcb35c1c814554e6108fed43b3dbb1533c8bbcf8688cceb6b6ab","tests/mpsc.rs":"401aa3c6923815058881ddce98070df68ebab283913c89c007436bb8af7ca0ea","tests/never.rs":"ee40c4fc4dd5af4983fae8de6927f52b81174d222c162f745b26c4a6c7108e4f","tests/ready.rs":"d349702f123925a0781b48d677e6dcf64fc5d1fc788a7bf1e151a3d57e81871c","tests/same_channel.rs":"2bab761443671e841e1b2476bd8082d75533a2f6be7946f5dbcee67cdc82dccb","tests/select.rs":"d20259a45f387cbce80c2c876ae81ea3883f36ea01c5151c159d58c362f6ba07","tests/select_macro.rs":"948eb21f72a9317c0de98a9bd21f6f8ff2b09b73b45c171c45b04c051a2fd0c4","tests/thread_locals.rs":"a1ce59e2aff69161621c0cb215eb6ea238088c06a31a8507a74cf179fd5a4299","tests/tick.rs":"5f697bd14c48505d932e82065b5302ef668e1cc19cac18e8ac22e0c83c221c1d","tests/zero.rs":"afbd838001d4196daddf17133e60ccea31529cc48ee01e245ac0d6366d1e30b9"},"package":"5aaa7bd5fb665c6864b5f963dd9097905c54125909c7aa94c9e18507cdbe6c53"}
-\ No newline at end of file
-diff --git a/third_party/rust/crossbeam-channel/CHANGELOG.md b/third_party/rust/crossbeam-channel/CHANGELOG.md
---- a/third_party/rust/crossbeam-channel/CHANGELOG.md
-+++ b/third_party/rust/crossbeam-channel/CHANGELOG.md
-@@ -1,8 +1,16 @@
-+# Version 0.5.4
-+
-+- Workaround a bug in upstream related to TLS access on AArch64 Linux. (#802)
-+
-+# Version 0.5.3
-+
-+- Fix panic on very large timeout. (#798)
-+
- # Version 0.5.2
- 
--- Fix stacked borrows violations. (#763, #764)
-+- Fix stacked borrows violations when `-Zmiri-tag-raw-pointers` is enabled. (#763, #764)
- 
- # Version 0.5.1
- 
- - Fix memory leak in unbounded channel. (#669)
- 
-@@ -19,10 +27,12 @@
- 
- - Fix bug in release (yanking 0.4.3)
- - Fix UB and breaking change introduced in 0.4.3
- 
- # Version 0.4.3
-+
-+**Note**: This release has been yanked. See [CVE-2020-15254](https://github.com/crossbeam-rs/crossbeam/security/advisories/GHSA-v5m7-53cv-f3hx) for details.
- 
- - Change license to "MIT OR Apache-2.0".
- 
- # Version 0.4.2
- 
-diff --git a/third_party/rust/crossbeam-channel/Cargo.lock b/third_party/rust/crossbeam-channel/Cargo.lock
---- a/third_party/rust/crossbeam-channel/Cargo.lock
-+++ b/third_party/rust/crossbeam-channel/Cargo.lock
-@@ -8,34 +8,34 @@
- source = "registry+https://github.com/rust-lang/crates.io-index"
- checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
- 
- [[package]]
- name = "crossbeam-channel"
--version = "0.5.2"
-+version = "0.5.4"
- dependencies = [
-  "cfg-if",
-  "crossbeam-utils",
-  "num_cpus",
-  "rand",
-  "signal-hook",
- ]
- 
- [[package]]
- name = "crossbeam-utils"
--version = "0.8.6"
-+version = "0.8.8"
- source = "registry+https://github.com/rust-lang/crates.io-index"
--checksum = "cfcae03edb34f947e64acdb1c33ec169824e20657e9ecb61cef6c8c74dcb8120"
-+checksum = "0bf124c720b7686e3c2663cf54062ab0f68a88af2fb6a030e87e30bf721fcb38"
- dependencies = [
-  "cfg-if",
-  "lazy_static",
- ]
- 
- [[package]]
- name = "getrandom"
--version = "0.2.3"
-+version = "0.2.5"
- source = "registry+https://github.com/rust-lang/crates.io-index"
--checksum = "7fcd999463524c52659517fe2cea98493cfe485d10565e7b0fb07dbba7ad2753"
-+checksum = "d39cd93900197114fa1fcb7ae84ca742095eed9442088988ae74fa744e930e77"
- dependencies = [
-  "cfg-if",
-  "libc",
-  "wasi",
- ]
-@@ -55,13 +55,13 @@
- source = "registry+https://github.com/rust-lang/crates.io-index"
- checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
- 
- [[package]]
- name = "libc"
--version = "0.2.112"
-+version = "0.2.120"
- source = "registry+https://github.com/rust-lang/crates.io-index"
--checksum = "1b03d17f364a3a042d5e5d46b053bbbf82c92c9430c592dd4c064dc6ee997125"
-+checksum = "ad5c14e80759d0939d013e6ca49930e59fc53dd8e5009132f76240c179380c09"
- 
- [[package]]
- name = "num_cpus"
- version = "1.13.1"
- source = "registry+https://github.com/rust-lang/crates.io-index"
-@@ -77,18 +77,17 @@
- source = "registry+https://github.com/rust-lang/crates.io-index"
- checksum = "eb9f9e6e233e5c4a35559a617bf40a4ec447db2e84c20b55a6f83167b7e57872"
- 
- [[package]]
- name = "rand"
--version = "0.8.4"
-+version = "0.8.5"
- source = "registry+https://github.com/rust-lang/crates.io-index"
--checksum = "2e7573632e6454cf6b99d7aac4ccca54be06da05aca2ef7423d22d27d4d4bcd8"
-+checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
- dependencies = [
-  "libc",
-  "rand_chacha",
-  "rand_core",
-- "rand_hc",
- ]
- 
- [[package]]
- name = "rand_chacha"
- version = "0.3.1"
-@@ -104,19 +103,10 @@
- version = "0.6.3"
- source = "registry+https://github.com/rust-lang/crates.io-index"
- checksum = "d34f1408f55294453790c48b2f1ebbb1c5b4b7563eb1f418bcfcfdbb06ebb4e7"
- dependencies = [
-  "getrandom",
--]
--
--[[package]]
--name = "rand_hc"
--version = "0.3.1"
--source = "registry+https://github.com/rust-lang/crates.io-index"
--checksum = "d51e9f596de227fda2ea6c84607f5558e196eeaf43c986b724ba4fb8fdf497e7"
--dependencies = [
-- "rand_core",
- ]
- 
- [[package]]
- name = "signal-hook"
- version = "0.3.13"
-diff --git a/third_party/rust/crossbeam-channel/Cargo.toml b/third_party/rust/crossbeam-channel/Cargo.toml
---- a/third_party/rust/crossbeam-channel/Cargo.toml
-+++ b/third_party/rust/crossbeam-channel/Cargo.toml
-@@ -11,24 +11,36 @@
- 
- [package]
- edition = "2018"
- rust-version = "1.36"
- name = "crossbeam-channel"
--version = "0.5.2"
-+version = "0.5.4"
- description = "Multi-producer multi-consumer channels for message passing"
- homepage = "https://github.com/crossbeam-rs/crossbeam/tree/master/crossbeam-channel"
--keywords = ["channel", "mpmc", "select", "golang", "message"]
--categories = ["algorithms", "concurrency", "data-structures"]
-+keywords = [
-+    "channel",
-+    "mpmc",
-+    "select",
-+    "golang",
-+    "message",
-+]
-+categories = [
-+    "algorithms",
-+    "concurrency",
-+    "data-structures",
-+]
- license = "MIT OR Apache-2.0"
- repository = "https://github.com/crossbeam-rs/crossbeam"
-+
- [dependencies.cfg-if]
- version = "1"
- 
- [dependencies.crossbeam-utils]
- version = "0.8"
- optional = true
- default-features = false
-+
- [dev-dependencies.num_cpus]
- version = "1.13.0"
- 
- [dev-dependencies.rand]
- version = "0.8"
-diff --git a/third_party/rust/crossbeam-channel/src/channel.rs b/third_party/rust/crossbeam-channel/src/channel.rs
---- a/third_party/rust/crossbeam-channel/src/channel.rs
-+++ b/third_party/rust/crossbeam-channel/src/channel.rs
-@@ -12,10 +12,11 @@
- use crate::err::{
-     RecvError, RecvTimeoutError, SendError, SendTimeoutError, TryRecvError, TrySendError,
- };
- use crate::flavors;
- use crate::select::{Operation, SelectHandle, Token};
-+use crate::utils;
- 
- /// Creates a channel of unbounded capacity.
- ///
- /// This channel has a growable buffer that can hold any number of messages at a time.
- ///
-@@ -469,11 +470,11 @@
-     ///     s.send_timeout(3, Duration::from_millis(500)),
-     ///     Err(SendTimeoutError::Disconnected(3)),
-     /// );
-     /// ```
-     pub fn send_timeout(&self, msg: T, timeout: Duration) -> Result<(), SendTimeoutError<T>> {
--        self.send_deadline(msg, Instant::now() + timeout)
-+        self.send_deadline(msg, utils::convert_timeout_to_deadline(timeout))
-     }
- 
-     /// Waits for a message to be sent into the channel, but only until a given deadline.
-     ///
-     /// If the channel is full and not disconnected, this call will block until the send operation
-@@ -859,11 +860,11 @@
-     ///     r.recv_timeout(Duration::from_secs(1)),
-     ///     Err(RecvTimeoutError::Disconnected),
-     /// );
-     /// ```
-     pub fn recv_timeout(&self, timeout: Duration) -> Result<T, RecvTimeoutError> {
--        self.recv_deadline(Instant::now() + timeout)
-+        self.recv_deadline(utils::convert_timeout_to_deadline(timeout))
-     }
- 
-     /// Waits for a message to be received from the channel, but only before a given deadline.
-     ///
-     /// If the channel is empty and not disconnected, this call will block until the receive
-diff --git a/third_party/rust/crossbeam-channel/src/err.rs b/third_party/rust/crossbeam-channel/src/err.rs
---- a/third_party/rust/crossbeam-channel/src/err.rs
-+++ b/third_party/rust/crossbeam-channel/src/err.rs
-@@ -306,20 +306,18 @@
-     }
- }
- 
- impl TryRecvError {
-     /// Returns `true` if the receive operation failed because the channel is empty.
--    #[allow(clippy::trivially_copy_pass_by_ref)]
-     pub fn is_empty(&self) -> bool {
-         match self {
-             TryRecvError::Empty => true,
-             _ => false,
-         }
-     }
- 
-     /// Returns `true` if the receive operation failed because the channel is disconnected.
--    #[allow(clippy::trivially_copy_pass_by_ref)]
-     pub fn is_disconnected(&self) -> bool {
-         match self {
-             TryRecvError::Disconnected => true,
-             _ => false,
-         }
-@@ -345,20 +343,18 @@
-     }
- }
- 
- impl RecvTimeoutError {
-     /// Returns `true` if the receive operation timed out.
--    #[allow(clippy::trivially_copy_pass_by_ref)]
-     pub fn is_timeout(&self) -> bool {
-         match self {
-             RecvTimeoutError::Timeout => true,
-             _ => false,
-         }
-     }
- 
-     /// Returns `true` if the receive operation failed because the channel is disconnected.
--    #[allow(clippy::trivially_copy_pass_by_ref)]
-     pub fn is_disconnected(&self) -> bool {
-         match self {
-             RecvTimeoutError::Disconnected => true,
-             _ => false,
-         }
-diff --git a/third_party/rust/crossbeam-channel/src/flavors/array.rs b/third_party/rust/crossbeam-channel/src/flavors/array.rs
---- a/third_party/rust/crossbeam-channel/src/flavors/array.rs
-+++ b/third_party/rust/crossbeam-channel/src/flavors/array.rs
-@@ -7,11 +7,10 @@
- //! Source:
- //!   - <http://www.1024cores.net/home/lock-free-algorithms/queues/bounded-mpmc-queue>
- //!   - <https://docs.google.com/document/d/1yIAYmbvL3JxOKOjuCyon7JhW4cSv1wy5hC0ApeGMV9s/pub>
- 
- use std::cell::UnsafeCell;
--use std::marker::PhantomData;
- use std::mem::MaybeUninit;
- use std::ptr;
- use std::sync::atomic::{self, AtomicUsize, Ordering};
- use std::time::Instant;
- 
-@@ -31,11 +30,11 @@
-     msg: UnsafeCell<MaybeUninit<T>>,
- }
- 
- /// The token type for the array flavor.
- #[derive(Debug)]
--pub struct ArrayToken {
-+pub(crate) struct ArrayToken {
-     /// Slot to read from or write to.
-     slot: *const u8,
- 
-     /// Stamp to store into the slot after reading or writing.
-     stamp: usize,
-@@ -70,11 +69,11 @@
-     ///
-     /// Messages are pushed into the tail of the channel.
-     tail: CachePadded<AtomicUsize>,
- 
-     /// The buffer holding slots.
--    buffer: *mut Slot<T>,
-+    buffer: Box<[Slot<T>]>,
- 
-     /// The channel capacity.
-     cap: usize,
- 
-     /// A stamp with the value of `{ lap: 1, mark: 0, index: 0 }`.
-@@ -86,13 +85,10 @@
-     /// Senders waiting while the channel is full.
-     senders: SyncWaker,
- 
-     /// Receivers waiting while the channel is empty and not disconnected.
-     receivers: SyncWaker,
--
--    /// Indicates that dropping a `Channel<T>` may drop values of type `T`.
--    _marker: PhantomData<T>,
- }
- 
- impl<T> Channel<T> {
-     /// Creates a bounded channel of capacity `cap`.
-     pub(crate) fn with_capacity(cap: usize) -> Self {
-@@ -107,33 +103,29 @@
-         // Tail is initialized to `{ lap: 0, mark: 0, index: 0 }`.
-         let tail = 0;
- 
-         // Allocate a buffer of `cap` slots initialized
-         // with stamps.
--        let buffer = {
--            let boxed: Box<[Slot<T>]> = (0..cap)
--                .map(|i| {
--                    // Set the stamp to `{ lap: 0, mark: 0, index: i }`.
--                    Slot {
--                        stamp: AtomicUsize::new(i),
--                        msg: UnsafeCell::new(MaybeUninit::uninit()),
--                    }
--                })
--                .collect();
--            Box::into_raw(boxed) as *mut Slot<T>
--        };
-+        let buffer: Box<[Slot<T>]> = (0..cap)
-+            .map(|i| {
-+                // Set the stamp to `{ lap: 0, mark: 0, index: i }`.
-+                Slot {
-+                    stamp: AtomicUsize::new(i),
-+                    msg: UnsafeCell::new(MaybeUninit::uninit()),
-+                }
-+            })
-+            .collect();
- 
-         Channel {
-             buffer,
-             cap,
-             one_lap,
-             mark_bit,
-             head: CachePadded::new(AtomicUsize::new(head)),
-             tail: CachePadded::new(AtomicUsize::new(tail)),
-             senders: SyncWaker::new(),
-             receivers: SyncWaker::new(),
--            _marker: PhantomData,
-         }
-     }
- 
-     /// Returns a receiver handle to the channel.
-     pub(crate) fn receiver(&self) -> Receiver<'_, T> {
-@@ -161,11 +153,12 @@
-             // Deconstruct the tail.
-             let index = tail & (self.mark_bit - 1);
-             let lap = tail & !(self.one_lap - 1);
- 
-             // Inspect the corresponding slot.
--            let slot = unsafe { &*self.buffer.add(index) };
-+            debug_assert!(index < self.buffer.len());
-+            let slot = unsafe { self.buffer.get_unchecked(index) };
-             let stamp = slot.stamp.load(Ordering::Acquire);
- 
-             // If the tail and the stamp match, we may attempt to push.
-             if tail == stamp {
-                 let new_tail = if index + 1 < self.cap {
-@@ -243,11 +236,12 @@
-             // Deconstruct the head.
-             let index = head & (self.mark_bit - 1);
-             let lap = head & !(self.one_lap - 1);
- 
-             // Inspect the corresponding slot.
--            let slot = unsafe { &*self.buffer.add(index) };
-+            debug_assert!(index < self.buffer.len());
-+            let slot = unsafe { self.buffer.get_unchecked(index) };
-             let stamp = slot.stamp.load(Ordering::Acquire);
- 
-             // If the the stamp is ahead of the head by 1, we may attempt to pop.
-             if head + 1 == stamp {
-                 let new = if index + 1 < self.cap {
-@@ -473,11 +467,10 @@
-             }
-         }
-     }
- 
-     /// Returns the capacity of the channel.
--    #[allow(clippy::unnecessary_wraps)] // This is intentional.
-     pub(crate) fn capacity(&self) -> Option<usize> {
-         Some(self.cap)
-     }
- 
-     /// Disconnects the channel and wakes up all blocked senders and receivers.
-@@ -538,26 +531,15 @@
-             } else {
-                 hix + i - self.cap
-             };
- 
-             unsafe {
--                let p = {
--                    let slot = &mut *self.buffer.add(index);
--                    let msg = &mut *slot.msg.get();
--                    msg.as_mut_ptr()
--                };
--                p.drop_in_place();
--            }
--        }
--
--        // Finally, deallocate the buffer, but don't run any destructors.
--        unsafe {
--            // Create a slice from the buffer to make
--            // a fat pointer. Then, use Box::from_raw
--            // to deallocate it.
--            let ptr = std::slice::from_raw_parts_mut(self.buffer, self.cap) as *mut [Slot<T>];
--            Box::from_raw(ptr);
-+                debug_assert!(index < self.buffer.len());
-+                let slot = self.buffer.get_unchecked_mut(index);
-+                let msg = &mut *slot.msg.get();
-+                msg.as_mut_ptr().drop_in_place();
-+            }
-         }
-     }
- }
- 
- /// Receiver handle to a channel.
-diff --git a/third_party/rust/crossbeam-channel/src/flavors/at.rs b/third_party/rust/crossbeam-channel/src/flavors/at.rs
---- a/third_party/rust/crossbeam-channel/src/flavors/at.rs
-+++ b/third_party/rust/crossbeam-channel/src/flavors/at.rs
-@@ -33,11 +33,11 @@
-         }
-     }
-     /// Creates a channel that delivers a message after a certain duration of time.
-     #[inline]
-     pub(crate) fn new_timeout(dur: Duration) -> Self {
--        Self::new_deadline(Instant::now() + dur)
-+        Self::new_deadline(utils::convert_timeout_to_deadline(dur))
-     }
- 
-     /// Attempts to receive a message without blocking.
-     #[inline]
-     pub(crate) fn try_recv(&self) -> Result<Instant, TryRecvError> {
-@@ -140,11 +140,10 @@
-             1
-         }
-     }
- 
-     /// Returns the capacity of the channel.
--    #[allow(clippy::unnecessary_wraps)] // This is intentional.
-     #[inline]
-     pub(crate) fn capacity(&self) -> Option<usize> {
-         Some(1)
-     }
- }
-diff --git a/third_party/rust/crossbeam-channel/src/flavors/list.rs b/third_party/rust/crossbeam-channel/src/flavors/list.rs
---- a/third_party/rust/crossbeam-channel/src/flavors/list.rs
-+++ b/third_party/rust/crossbeam-channel/src/flavors/list.rs
-@@ -124,11 +124,11 @@
-     block: AtomicPtr<Block<T>>,
- }
- 
- /// The token type for the list flavor.
- #[derive(Debug)]
--pub struct ListToken {
-+pub(crate) struct ListToken {
-     /// The block of slots.
-     block: *const u8,
- 
-     /// The offset into the block.
-     offset: usize,
-diff --git a/third_party/rust/crossbeam-channel/src/flavors/never.rs b/third_party/rust/crossbeam-channel/src/flavors/never.rs
---- a/third_party/rust/crossbeam-channel/src/flavors/never.rs
-+++ b/third_party/rust/crossbeam-channel/src/flavors/never.rs
-@@ -63,11 +63,10 @@
-     pub(crate) fn len(&self) -> usize {
-         0
-     }
- 
-     /// Returns the capacity of the channel.
--    #[allow(clippy::unnecessary_wraps)] // This is intentional.
-     #[inline]
-     pub(crate) fn capacity(&self) -> Option<usize> {
-         Some(0)
-     }
- }
-diff --git a/third_party/rust/crossbeam-channel/src/flavors/tick.rs b/third_party/rust/crossbeam-channel/src/flavors/tick.rs
---- a/third_party/rust/crossbeam-channel/src/flavors/tick.rs
-+++ b/third_party/rust/crossbeam-channel/src/flavors/tick.rs
-@@ -8,10 +8,11 @@
- use crossbeam_utils::atomic::AtomicCell;
- 
- use crate::context::Context;
- use crate::err::{RecvTimeoutError, TryRecvError};
- use crate::select::{Operation, SelectHandle, Token};
-+use crate::utils;
- 
- /// Result of a receive operation.
- pub(crate) type TickToken = Option<Instant>;
- 
- /// Channel that delivers messages periodically.
-@@ -26,11 +27,11 @@
- impl Channel {
-     /// Creates a channel that delivers messages periodically.
-     #[inline]
-     pub(crate) fn new(dur: Duration) -> Self {
-         Channel {
--            delivery_time: AtomicCell::new(Instant::now() + dur),
-+            delivery_time: AtomicCell::new(utils::convert_timeout_to_deadline(dur)),
-             duration: dur,
-         }
-     }
- 
-     /// Attempts to receive a message without blocking.
-@@ -110,11 +111,10 @@
-             1
-         }
-     }
- 
-     /// Returns the capacity of the channel.
--    #[allow(clippy::unnecessary_wraps)] // This is intentional.
-     #[inline]
-     pub(crate) fn capacity(&self) -> Option<usize> {
-         Some(1)
-     }
- }
-diff --git a/third_party/rust/crossbeam-channel/src/flavors/zero.rs b/third_party/rust/crossbeam-channel/src/flavors/zero.rs
---- a/third_party/rust/crossbeam-channel/src/flavors/zero.rs
-+++ b/third_party/rust/crossbeam-channel/src/flavors/zero.rs
-@@ -15,11 +15,11 @@
- use crate::select::{Operation, SelectHandle, Selected, Token};
- use crate::utils::Spinlock;
- use crate::waker::Waker;
- 
- /// A pointer to a packet.
--pub struct ZeroToken(*mut ());
-+pub(crate) struct ZeroToken(*mut ());
- 
- impl Default for ZeroToken {
-     fn default() -> Self {
-         Self(ptr::null_mut())
-     }
-@@ -361,11 +361,10 @@
-     pub(crate) fn len(&self) -> usize {
-         0
-     }
- 
-     /// Returns the capacity of the channel.
--    #[allow(clippy::unnecessary_wraps)] // This is intentional.
-     pub(crate) fn capacity(&self) -> Option<usize> {
-         Some(0)
-     }
- 
-     /// Returns `true` if the channel is empty.
-diff --git a/third_party/rust/crossbeam-channel/src/select.rs b/third_party/rust/crossbeam-channel/src/select.rs
---- a/third_party/rust/crossbeam-channel/src/select.rs
-+++ b/third_party/rust/crossbeam-channel/src/select.rs
-@@ -20,16 +20,17 @@
- ///
- /// Each field contains data associated with a specific channel flavor.
- // This is a private API that is used by the select macro.
- #[derive(Debug, Default)]
- pub struct Token {
--    pub at: flavors::at::AtToken,
--    pub array: flavors::array::ArrayToken,
--    pub list: flavors::list::ListToken,
--    pub never: flavors::never::NeverToken,
--    pub tick: flavors::tick::TickToken,
--    pub zero: flavors::zero::ZeroToken,
-+    pub(crate) at: flavors::at::AtToken,
-+    pub(crate) array: flavors::array::ArrayToken,
-+    pub(crate) list: flavors::list::ListToken,
-+    #[allow(dead_code)]
-+    pub(crate) never: flavors::never::NeverToken,
-+    pub(crate) tick: flavors::tick::TickToken,
-+    pub(crate) zero: flavors::zero::ZeroToken,
- }
- 
- /// Identifier associated with an operation by a specific thread on a specific channel.
- #[derive(Debug, Clone, Copy, PartialEq, Eq)]
- pub struct Operation(usize);
-@@ -484,11 +485,11 @@
- #[inline]
- pub fn select_timeout<'a>(
-     handles: &mut [(&'a dyn SelectHandle, usize, *const u8)],
-     timeout: Duration,
- ) -> Result<SelectedOperation<'a>, SelectTimeoutError> {
--    select_deadline(handles, Instant::now() + timeout)
-+    select_deadline(handles, utils::convert_timeout_to_deadline(timeout))
- }
- 
- /// Blocks until a given deadline, or until one of the operations becomes ready and selects it.
- #[inline]
- pub(crate) fn select_deadline<'a>(
-@@ -1040,11 +1041,11 @@
-     ///     Ok(i) if i == oper2 => assert_eq!(r2.try_recv(), Ok(20)),
-     ///     Ok(_) => unreachable!(),
-     /// }
-     /// ```
-     pub fn ready_timeout(&mut self, timeout: Duration) -> Result<usize, ReadyTimeoutError> {
--        self.ready_deadline(Instant::now() + timeout)
-+        self.ready_deadline(utils::convert_timeout_to_deadline(timeout))
-     }
- 
-     /// Blocks until a given deadline, or until one of the operations becomes ready.
-     ///
-     /// If an operation becomes ready, its index is returned. If multiple operations are ready at
-diff --git a/third_party/rust/crossbeam-channel/src/select_macro.rs b/third_party/rust/crossbeam-channel/src/select_macro.rs
---- a/third_party/rust/crossbeam-channel/src/select_macro.rs
-+++ b/third_party/rust/crossbeam-channel/src/select_macro.rs
-@@ -119,22 +119,11 @@
-             ($($head)* $case ($($args)*) $(-> $res)* => { $body },)
-         )
-     };
-     // Only one case remains.
-     (@list
--        ($case:ident ($($args:tt)*) $(-> $res:pat)* => $body:expr)
--        ($($head:tt)*)
--    ) => {
--        $crate::crossbeam_channel_internal!(
--            @list
--            ()
--            ($($head)* $case ($($args)*) $(-> $res)* => { $body },)
--        )
--    };
--    // Accept a trailing comma at the end of the list.
--    (@list
--        ($case:ident ($($args:tt)*) $(-> $res:pat)* => $body:expr,)
-+        ($case:ident ($($args:tt)*) $(-> $res:pat)* => $body:expr $(,)?)
-         ($($head:tt)*)
-     ) => {
-         $crate::crossbeam_channel_internal!(
-             @list
-             ()
-@@ -371,34 +360,21 @@
-         )
-     };
- 
-     // Check the format of a recv case.
-     (@case
--        (recv($r:expr) -> $res:pat => $body:tt, $($tail:tt)*)
-+        (recv($r:expr $(,)?) -> $res:pat => $body:tt, $($tail:tt)*)
-         ($($cases:tt)*)
-         $default:tt
-     ) => {
-         $crate::crossbeam_channel_internal!(
-             @case
-             ($($tail)*)
-             ($($cases)* recv($r) -> $res => $body,)
-             $default
-         )
-     };
--    // Allow trailing comma...
--    (@case
--        (recv($r:expr,) -> $res:pat => $body:tt, $($tail:tt)*)
--        ($($cases:tt)*)
--        $default:tt
--    ) => {
--        $crate::crossbeam_channel_internal!(
--            @case
--            ($($tail)*)
--            ($($cases)* recv($r) -> $res => $body,)
--            $default
--        )
--    };
-     // Print an error if the argument list is invalid.
-     (@case
-         (recv($($args:tt)*) -> $res:pat => $body:tt, $($tail:tt)*)
-         ($($cases:tt)*)
-         $default:tt
-@@ -426,34 +402,21 @@
-         )
-     };
- 
-     // Check the format of a send case.
-     (@case
--        (send($s:expr, $m:expr) -> $res:pat => $body:tt, $($tail:tt)*)
-+        (send($s:expr, $m:expr $(,)?) -> $res:pat => $body:tt, $($tail:tt)*)
-         ($($cases:tt)*)
-         $default:tt
-     ) => {
-         $crate::crossbeam_channel_internal!(
-             @case
-             ($($tail)*)
-             ($($cases)* send($s, $m) -> $res => $body,)
-             $default
-         )
-     };
--    // Allow trailing comma...
--    (@case
--        (send($s:expr, $m:expr,) -> $res:pat => $body:tt, $($tail:tt)*)
--        ($($cases:tt)*)
--        $default:tt
--    ) => {
--        $crate::crossbeam_channel_internal!(
--            @case
--            ($($tail)*)
--            ($($cases)* send($s, $m) -> $res => $body,)
--            $default
--        )
--    };
-     // Print an error if the argument list is invalid.
-     (@case
-         (send($($args:tt)*) -> $res:pat => $body:tt, $($tail:tt)*)
-         ($($cases:tt)*)
-         $default:tt
-@@ -494,24 +457,11 @@
-             (default() => $body,)
-         )
-     };
-     // Check the format of a default case with timeout.
-     (@case
--        (default($timeout:expr) => $body:tt, $($tail:tt)*)
--        $cases:tt
--        ()
--    ) => {
--        $crate::crossbeam_channel_internal!(
--            @case
--            ($($tail)*)
--            $cases
--            (default($timeout) => $body,)
--        )
--    };
--    // Allow trailing comma...
--    (@case
--        (default($timeout:expr,) => $body:tt, $($tail:tt)*)
-+        (default($timeout:expr $(,)?) => $body:tt, $($tail:tt)*)
-         $cases:tt
-         ()
-     ) => {
-         $crate::crossbeam_channel_internal!(
-             @case
-diff --git a/third_party/rust/crossbeam-channel/src/utils.rs b/third_party/rust/crossbeam-channel/src/utils.rs
---- a/third_party/rust/crossbeam-channel/src/utils.rs
-+++ b/third_party/rust/crossbeam-channel/src/utils.rs
-@@ -59,10 +59,18 @@
-             }
-         }
-     }
- }
- 
-+// https://github.com/crossbeam-rs/crossbeam/issues/795
-+pub(crate) fn convert_timeout_to_deadline(timeout: Duration) -> Instant {
-+    match Instant::now().checked_add(timeout) {
-+        Some(deadline) => deadline,
-+        None => Instant::now() + Duration::from_secs(86400 * 365 * 30),
-+    }
-+}
-+
- /// A simple spinlock.
- pub(crate) struct Spinlock<T> {
-     flag: AtomicBool,
-     value: UnsafeCell<T>,
- }
-diff --git a/third_party/rust/crossbeam-channel/src/waker.rs b/third_party/rust/crossbeam-channel/src/waker.rs
---- a/third_party/rust/crossbeam-channel/src/waker.rs
-+++ b/third_party/rust/crossbeam-channel/src/waker.rs
-@@ -75,30 +75,36 @@
-     }
- 
-     /// Attempts to find another thread's entry, select the operation, and wake it up.
-     #[inline]
-     pub(crate) fn try_select(&mut self) -> Option<Entry> {
--        self.selectors
--            .iter()
--            .position(|selector| {
--                // Does the entry belong to a different thread?
--                selector.cx.thread_id() != current_thread_id()
--                    && selector // Try selecting this operation.
--                        .cx
--                        .try_select(Selected::Operation(selector.oper))
--                        .is_ok()
--                    && {
--                        // Provide the packet.
--                        selector.cx.store_packet(selector.packet);
--                        // Wake the thread up.
--                        selector.cx.unpark();
--                        true
--                    }
--            })
--            // Remove the entry from the queue to keep it clean and improve
--            // performance.
--            .map(|pos| self.selectors.remove(pos))
-+        if self.selectors.is_empty() {
-+            None
-+        } else {
-+            let thread_id = current_thread_id();
-+
-+            self.selectors
-+                .iter()
-+                .position(|selector| {
-+                    // Does the entry belong to a different thread?
-+                    selector.cx.thread_id() != thread_id
-+                        && selector // Try selecting this operation.
-+                            .cx
-+                            .try_select(Selected::Operation(selector.oper))
-+                            .is_ok()
-+                        && {
-+                            // Provide the packet.
-+                            selector.cx.store_packet(selector.packet);
-+                            // Wake the thread up.
-+                            selector.cx.unpark();
-+                            true
-+                        }
-+                })
-+                // Remove the entry from the queue to keep it clean and improve
-+                // performance.
-+                .map(|pos| self.selectors.remove(pos))
-+        }
-     }
- 
-     /// Returns `true` if there is an entry which can be selected by the current thread.
-     #[inline]
-     pub(crate) fn can_select(&self) -> bool {
-diff --git a/third_party/rust/crossbeam-channel/tests/array.rs b/third_party/rust/crossbeam-channel/tests/array.rs
---- a/third_party/rust/crossbeam-channel/tests/array.rs
-+++ b/third_party/rust/crossbeam-channel/tests/array.rs
-@@ -1,8 +1,6 @@
- //! Tests for the array channel flavor.
--
--#![cfg(not(miri))] // TODO: many assertions failed due to Miri is slow
- 
- use std::any::Any;
- use std::sync::atomic::AtomicUsize;
- use std::sync::atomic::Ordering;
- use std::thread;
-@@ -252,11 +250,17 @@
-     assert_eq!(r.recv(), Err(RecvError));
- }
- 
- #[test]
- fn len() {
-+    #[cfg(miri)]
-+    const COUNT: usize = 250;
-+    #[cfg(not(miri))]
-     const COUNT: usize = 25_000;
-+    #[cfg(miri)]
-+    const CAP: usize = 100;
-+    #[cfg(not(miri))]
-     const CAP: usize = 1000;
- 
-     let (s, r) = bounded(CAP);
- 
-     assert_eq!(s.len(), 0);
-@@ -345,10 +349,13 @@
-     .unwrap();
- }
- 
- #[test]
- fn spsc() {
-+    #[cfg(miri)]
-+    const COUNT: usize = 100;
-+    #[cfg(not(miri))]
-     const COUNT: usize = 100_000;
- 
-     let (s, r) = bounded(3);
- 
-     scope(|scope| {
-@@ -367,10 +374,13 @@
-     .unwrap();
- }
- 
- #[test]
- fn mpmc() {
-+    #[cfg(miri)]
-+    const COUNT: usize = 100;
-+    #[cfg(not(miri))]
-     const COUNT: usize = 25_000;
-     const THREADS: usize = 4;
- 
-     let (s, r) = bounded::<usize>(3);
-     let v = (0..COUNT).map(|_| AtomicUsize::new(0)).collect::<Vec<_>>();
-@@ -399,10 +409,13 @@
-     }
- }
- 
- #[test]
- fn stress_oneshot() {
-+    #[cfg(miri)]
-+    const COUNT: usize = 100;
-+    #[cfg(not(miri))]
-     const COUNT: usize = 10_000;
- 
-     for _ in 0..COUNT {
-         let (s, r) = bounded(1);
- 
-@@ -414,10 +427,13 @@
-     }
- }
- 
- #[test]
- fn stress_iter() {
-+    #[cfg(miri)]
-+    const COUNT: usize = 100;
-+    #[cfg(not(miri))]
-     const COUNT: usize = 100_000;
- 
-     let (request_s, request_r) = bounded(1);
-     let (response_s, response_r) = bounded(1);
- 
-@@ -479,10 +495,11 @@
-         });
-     })
-     .unwrap();
- }
- 
-+#[cfg_attr(miri, ignore)] // Miri is too slow
- #[test]
- fn drops() {
-     const RUNS: usize = 100;
- 
-     static DROPS: AtomicUsize = AtomicUsize::new(0);
-@@ -531,10 +548,13 @@
-     }
- }
- 
- #[test]
- fn linearizable() {
-+    #[cfg(miri)]
-+    const COUNT: usize = 100;
-+    #[cfg(not(miri))]
-     const COUNT: usize = 25_000;
-     const THREADS: usize = 4;
- 
-     let (s, r) = bounded(THREADS);
- 
-@@ -551,10 +571,13 @@
-     .unwrap();
- }
- 
- #[test]
- fn fairness() {
-+    #[cfg(miri)]
-+    const COUNT: usize = 100;
-+    #[cfg(not(miri))]
-     const COUNT: usize = 10_000;
- 
-     let (s1, r1) = bounded::<()>(COUNT);
-     let (s2, r2) = bounded::<()>(COUNT);
- 
-@@ -573,10 +596,13 @@
-     assert!(hits.iter().all(|x| *x >= COUNT / hits.len() / 2));
- }
- 
- #[test]
- fn fairness_duplicates() {
-+    #[cfg(miri)]
-+    const COUNT: usize = 100;
-+    #[cfg(not(miri))]
-     const COUNT: usize = 10_000;
- 
-     let (s, r) = bounded::<()>(COUNT);
- 
-     for _ in 0..COUNT {
-@@ -617,10 +643,13 @@
-     }
- }
- 
- #[test]
- fn channel_through_channel() {
-+    #[cfg(miri)]
-+    const COUNT: usize = 100;
-+    #[cfg(not(miri))]
-     const COUNT: usize = 1000;
- 
-     type T = Box<dyn Any + Send>;
- 
-     let (s, r) = bounded::<T>(1);
-@@ -652,5 +681,58 @@
-             }
-         });
-     })
-     .unwrap();
- }
-+
-+#[test]
-+fn panic_on_drop() {
-+    struct Msg1<'a>(&'a mut bool);
-+    impl Drop for Msg1<'_> {
-+        fn drop(&mut self) {
-+            if *self.0 && !std::thread::panicking() {
-+                panic!("double drop");
-+            } else {
-+                *self.0 = true;
-+            }
-+        }
-+    }
-+
-+    struct Msg2<'a>(&'a mut bool);
-+    impl Drop for Msg2<'_> {
-+        fn drop(&mut self) {
-+            if *self.0 {
-+                panic!("double drop");
-+            } else {
-+                *self.0 = true;
-+                panic!("first drop");
-+            }
-+        }
-+    }
-+
-+    // normal
-+    let (s, r) = bounded(2);
-+    let (mut a, mut b) = (false, false);
-+    s.send(Msg1(&mut a)).unwrap();
-+    s.send(Msg1(&mut b)).unwrap();
-+    drop(s);
-+    drop(r);
-+    assert!(a);
-+    assert!(b);
-+
-+    // panic on drop
-+    let (s, r) = bounded(2);
-+    let (mut a, mut b) = (false, false);
-+    s.send(Msg2(&mut a)).unwrap();
-+    s.send(Msg2(&mut b)).unwrap();
-+    drop(s);
-+    let res = std::panic::catch_unwind(move || {
-+        drop(r);
-+    });
-+    assert_eq!(
-+        *res.unwrap_err().downcast_ref::<&str>().unwrap(),
-+        "first drop"
-+    );
-+    assert!(a);
-+    // Elements after the panicked element will leak.
-+    assert!(!b);
-+}
-diff --git a/third_party/rust/crossbeam-channel/tests/select_macro.rs b/third_party/rust/crossbeam-channel/tests/select_macro.rs
---- a/third_party/rust/crossbeam-channel/tests/select_macro.rs
-+++ b/third_party/rust/crossbeam-channel/tests/select_macro.rs
-@@ -1466,5 +1466,16 @@
-             drop(s);
-         });
-     })
-     .unwrap();
- }
-+
-+#[test]
-+fn trailing_comma() {
-+    let (s, r) = unbounded::<usize>();
-+
-+    select! {
-+        send(s, 1,) -> _ => {},
-+        recv(r,) -> _ => {},
-+        default(ms(1000),) => {},
-+    }
-+}
-