[INFO] cloning repository https://github.com/smythg4/rust-atomics-and-locks
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/smythg4/rust-atomics-and-locks" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsmythg4%2Frust-atomics-and-locks", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsmythg4%2Frust-atomics-and-locks'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 193ac4dcf87c33955aef16df0e27c346666eb7f7
[INFO] testing smythg4/rust-atomics-and-locks against master#562dee4820c458d823175268e41601d4c060588a for pr-154210
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsmythg4%2Frust-atomics-and-locks" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/smythg4/rust-atomics-and-locks
[INFO] finished tweaking git repo https://github.com/smythg4/rust-atomics-and-locks
[INFO] tweaked toml for git repo https://github.com/smythg4/rust-atomics-and-locks written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/smythg4/rust-atomics-and-locks on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/smythg4/rust-atomics-and-locks already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded atomic-wait v1.1.0
[INFO] [stderr]   Downloaded flume v0.12.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 285ad46608b2f0690583f5cd532ca7daee3ecbad269387d30ba89f8810c24eea
[INFO] running `Command { std: "docker" "start" "-a" "285ad46608b2f0690583f5cd532ca7daee3ecbad269387d30ba89f8810c24eea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "285ad46608b2f0690583f5cd532ca7daee3ecbad269387d30ba89f8810c24eea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "285ad46608b2f0690583f5cd532ca7daee3ecbad269387d30ba89f8810c24eea", kill_on_drop: false }`
[INFO] [stdout] 285ad46608b2f0690583f5cd532ca7daee3ecbad269387d30ba89f8810c24eea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 790e4d78fe0f022d9a1ce7a98f8c585f883b9ed23021194a78e1808f74af6049
[INFO] running `Command { std: "docker" "start" "-a" "790e4d78fe0f022d9a1ce7a98f8c585f883b9ed23021194a78e1808f74af6049", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.180
[INFO] [stderr]    Compiling futures-core v0.3.32
[INFO] [stderr]    Compiling fastrand v2.3.0
[INFO] [stderr]    Compiling futures-sink v0.3.32
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling flume v0.12.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling atomic-wait v1.1.0
[INFO] [stderr]    Compiling atomics_and_locks v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type `McsNode` is more private than the item `McsLock::lock`
[INFO] [stdout]   --> src/queuelock.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn lock(&self, node: &mut McsNode) {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ method `McsLock::lock` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `McsNode` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/queuelock.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout]  7 | struct McsNode {
[INFO] [stdout]    | ^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `McsNode` is more private than the item `McsLock::unlock`
[INFO] [stdout]   --> src/queuelock.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn unlock(&self, node: &mut McsNode) {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ method `McsLock::unlock` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `McsNode` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/queuelock.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout]  7 | struct McsNode {
[INFO] [stdout]    | ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Task` is never used
[INFO] [stdout]  --> src/threadpool.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | type Task = Box<dyn FnOnce() + Send>;
[INFO] [stdout]   |      ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `worker_loop` is never used
[INFO] [stdout]  --> src/threadpool.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn worker_loop(task_rx: flume::Receiver<Task>, id: usize) {
[INFO] [stdout]   |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ThreadPool` is never constructed
[INFO] [stdout]   --> src/threadpool.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct ThreadPool {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `spawn` are never used
[INFO] [stdout]   --> src/threadpool.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl ThreadPool {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 25 |     pub fn new(num_workers: usize) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub fn spawn(&self, f: impl FnOnce() + Send + 'static) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.05s
[INFO] running `Command { std: "docker" "inspect" "790e4d78fe0f022d9a1ce7a98f8c585f883b9ed23021194a78e1808f74af6049", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "790e4d78fe0f022d9a1ce7a98f8c585f883b9ed23021194a78e1808f74af6049", kill_on_drop: false }`
[INFO] [stdout] 790e4d78fe0f022d9a1ce7a98f8c585f883b9ed23021194a78e1808f74af6049
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] df8bcb52001506842b3579e30e177928d1de2459a5524a7f9545ca84b78ec9cc
[INFO] running `Command { std: "docker" "start" "-a" "df8bcb52001506842b3579e30e177928d1de2459a5524a7f9545ca84b78ec9cc", kill_on_drop: false }`
[INFO] [stdout] warning: type `McsNode` is more private than the item `McsLock::lock`
[INFO] [stdout]   --> src/queuelock.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn lock(&self, node: &mut McsNode) {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ method `McsLock::lock` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `McsNode` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/queuelock.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout]  7 | struct McsNode {
[INFO] [stdout]    | ^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `McsNode` is more private than the item `McsLock::unlock`
[INFO] [stdout]   --> src/queuelock.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn unlock(&self, node: &mut McsNode) {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ method `McsLock::unlock` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `McsNode` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/queuelock.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout]  7 | struct McsNode {
[INFO] [stdout]    | ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Task` is never used
[INFO] [stdout]  --> src/threadpool.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | type Task = Box<dyn FnOnce() + Send>;
[INFO] [stdout]   |      ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `worker_loop` is never used
[INFO] [stdout]  --> src/threadpool.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn worker_loop(task_rx: flume::Receiver<Task>, id: usize) {
[INFO] [stdout]   |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling atomics_and_locks v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `ThreadPool` is never constructed
[INFO] [stdout]   --> src/threadpool.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct ThreadPool {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `spawn` are never used
[INFO] [stdout]   --> src/threadpool.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl ThreadPool {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 25 |     pub fn new(num_workers: usize) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub fn spawn(&self, f: impl FnOnce() + Send + 'static) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `McsNode` is more private than the item `McsLock::lock`
[INFO] [stdout]   --> src/queuelock.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn lock(&self, node: &mut McsNode) {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ method `McsLock::lock` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `McsNode` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/queuelock.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout]  7 | struct McsNode {
[INFO] [stdout]    | ^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `McsNode` is more private than the item `McsLock::unlock`
[INFO] [stdout]   --> src/queuelock.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn unlock(&self, node: &mut McsNode) {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ method `McsLock::unlock` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `McsNode` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/queuelock.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout]  7 | struct McsNode {
[INFO] [stdout]    | ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.54s
[INFO] running `Command { std: "docker" "inspect" "df8bcb52001506842b3579e30e177928d1de2459a5524a7f9545ca84b78ec9cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df8bcb52001506842b3579e30e177928d1de2459a5524a7f9545ca84b78ec9cc", kill_on_drop: false }`
[INFO] [stdout] df8bcb52001506842b3579e30e177928d1de2459a5524a7f9545ca84b78ec9cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1cdb12d780f3ebd850d50b939fd9240699b478173618ef6d9fd4409cafc4f63c
[INFO] running `Command { std: "docker" "start" "-a" "1cdb12d780f3ebd850d50b939fd9240699b478173618ef6d9fd4409cafc4f63c", kill_on_drop: false }`
[INFO] [stderr] warning: type `McsNode` is more private than the item `McsLock::lock`
[INFO] [stderr]   --> src/queuelock.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     pub fn lock(&self, node: &mut McsNode) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ method `McsLock::lock` is reachable at visibility `pub`
[INFO] [stderr]    |
[INFO] [stderr] note: but type `McsNode` is only usable at visibility `pub(self)`
[INFO] [stderr]   --> src/queuelock.rs:7:1
[INFO] [stderr]    |
[INFO] [stderr]  7 | struct McsNode {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type `McsNode` is more private than the item `McsLock::unlock`
[INFO] [stderr]   --> src/queuelock.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     pub fn unlock(&self, node: &mut McsNode) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ method `McsLock::unlock` is reachable at visibility `pub`
[INFO] [stderr]    |
[INFO] [stderr] note: but type `McsNode` is only usable at visibility `pub(self)`
[INFO] [stderr]   --> src/queuelock.rs:7:1
[INFO] [stderr]    |
[INFO] [stderr]  7 | struct McsNode {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias `Task` is never used
[INFO] [stderr]  --> src/threadpool.rs:6:6
[INFO] [stderr]   |
[INFO] [stderr] 6 | type Task = Box<dyn FnOnce() + Send>;
[INFO] [stderr]   |      ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `worker_loop` is never used
[INFO] [stderr]  --> src/threadpool.rs:8:4
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn worker_loop(task_rx: flume::Receiver<Task>, id: usize) {
[INFO] [stderr]   |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `ThreadPool` is never constructed
[INFO] [stderr]   --> src/threadpool.rs:19:12
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub struct ThreadPool {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new` and `spawn` are never used
[INFO] [stderr]   --> src/threadpool.rs:25:12
[INFO] [stderr]    |
[INFO] [stderr] 24 | impl ThreadPool {
[INFO] [stderr]    | --------------- associated items in this implementation
[INFO] [stderr] 25 |     pub fn new(num_workers: usize) -> Self {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 40 |     pub fn spawn(&self, f: impl FnOnce() + Send + 'static) {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `atomics_and_locks` (lib) generated 6 warnings
[INFO] [stderr] warning: `atomics_and_locks` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/atomics_and_locks-9680845a754685db)
[INFO] [stdout] 
[INFO] [stdout] running 15 tests
[INFO] [stdout] test channel::tests::test_sender_error_on_receiver_drop ... ok
[INFO] [stdout] test channel::tests::test_ring_buffer_wraparound ... ok
[INFO] [stdout] test channel::tests::test_try_recv ... ok
[INFO] [stdout] test channel::tests::test_drain_after_disconnect ... ok
[INFO] [stdout] test channel::tests::test_multiple_producers ... ok
[INFO] [stdout] test unboundedchannel::tests::test_ub_drain_after_disconnect ... ok
[INFO] [stdout] test queue::tests::test_queue_basics ... ok
[INFO] [stdout] test queue::tests::test_queue_concurrent ... ok
[INFO] [stdout] test unboundedchannel::tests::test_ub_sender_error_on_receiver_drop ... ok
[INFO] [stdout] test unboundedchannel::tests::test_mpmc ... ok
[INFO] [stdout] test channel::tests::test_bounded_sender_blocks_when_full ... ok
[INFO] [stdout] test semaphore::tests::test_semaphore_limits_concurrency ... ok
[INFO] [stdout] test channel::tests::test_channels_simple ... ok
[INFO] [stdout] test unboundedchannel::tests::test_unbounded_channels_simple ... ok
[INFO] [stdout] test threadpool::tests::test_tasks_execute ... ok
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/atomics_and_locks-086d537be7945b4a)
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 20.05s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::test_condvar ... ok
[INFO] [stdout] test tests::mutex_test ... ok
[INFO] [stderr]    Doc-tests atomics_and_locks
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.05s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1cdb12d780f3ebd850d50b939fd9240699b478173618ef6d9fd4409cafc4f63c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cdb12d780f3ebd850d50b939fd9240699b478173618ef6d9fd4409cafc4f63c", kill_on_drop: false }`
[INFO] [stdout] 1cdb12d780f3ebd850d50b939fd9240699b478173618ef6d9fd4409cafc4f63c