[INFO] cloning repository https://github.com/sxxrfx/channels
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sxxrfx/channels" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsxxrfx%2Fchannels", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsxxrfx%2Fchannels'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 40b354a8790667ab1cf91a6a9b8ccb15675bb1e8
[INFO] testing sxxrfx/channels against try#db823df02fd0c2cf67b43025ac3fef3f2d743245 for pr-150681
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsxxrfx%2Fchannels" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sxxrfx/channels
[INFO] finished tweaking git repo https://github.com/sxxrfx/channels
[INFO] tweaked toml for git repo https://github.com/sxxrfx/channels written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sxxrfx/channels on toolchain db823df02fd0c2cf67b43025ac3fef3f2d743245
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/sxxrfx/channels 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" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] testing sxxrfx/channels against try#db823df02fd0c2cf67b43025ac3fef3f2d743245 for pr-150681
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsxxrfx%2Fchannels" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sxxrfx/channels
[INFO] finished tweaking git repo https://github.com/sxxrfx/channels
[INFO] tweaked toml for git repo https://github.com/sxxrfx/channels written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sxxrfx/channels on toolchain db823df02fd0c2cf67b43025ac3fef3f2d743245
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/sxxrfx/channels 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" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c24886d9c1c2cc015f492592a1f30b5706b97794473f1d39694b0f8541d3dbc2
[INFO] running `Command { std: "docker" "start" "-a" "c24886d9c1c2cc015f492592a1f30b5706b97794473f1d39694b0f8541d3dbc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c24886d9c1c2cc015f492592a1f30b5706b97794473f1d39694b0f8541d3dbc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c24886d9c1c2cc015f492592a1f30b5706b97794473f1d39694b0f8541d3dbc2", kill_on_drop: false }`
[INFO] [stdout] c24886d9c1c2cc015f492592a1f30b5706b97794473f1d39694b0f8541d3dbc2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6003134d77869163fb8aca115be06d23df9cb9153629dbd347dbd90ffa7ef766
[INFO] running `Command { std: "docker" "start" "-a" "6003134d77869163fb8aca115be06d23df9cb9153629dbd347dbd90ffa7ef766", kill_on_drop: false }`
[INFO] [stderr]    Compiling channels v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Channel` is never constructed
[INFO] [stdout]  --> src/blocking_channel.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct Channel<T> {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Sender` is never constructed
[INFO] [stdout]   --> src/blocking_channel.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct Sender<'a, T> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Receiver` is never constructed
[INFO] [stdout]   --> src/blocking_channel.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct Receiver<'a, T> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `split` are never used
[INFO] [stdout]   --> src/blocking_channel.rs:27:18
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl<T> Channel<T> {
[INFO] [stdout]    | ------------------ associated items in this implementation
[INFO] [stdout] 27 |     pub const fn new() -> Self {
[INFO] [stdout]    |                  ^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     pub fn split<'a>(&'a mut self) -> (Sender<'a, T>, Receiver<'a, T>) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `send` is never used
[INFO] [stdout]   --> src/blocking_channel.rs:50:12
[INFO] [stdout]    |
[INFO] [stdout] 49 | impl<T> Sender<'_, T> {
[INFO] [stdout]    | --------------------- method in this implementation
[INFO] [stdout] 50 |     pub fn send(self, message: T) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `is_ready` and `receive` are never used
[INFO] [stdout]   --> src/blocking_channel.rs:58:12
[INFO] [stdout]    |
[INFO] [stdout] 57 | impl<T> Receiver<'_, T> {
[INFO] [stdout]    | ----------------------- methods in this implementation
[INFO] [stdout] 58 |     pub fn is_ready(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 61 |     pub fn receive(self) -> T {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Channel` is never constructed
[INFO] [stdout]  --> src/borrow_sender_receiver_channel.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Channel<T> {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Sender` is never constructed
[INFO] [stdout]   --> src/borrow_sender_receiver_channel.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Sender<'a, T> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Receiver` is never constructed
[INFO] [stdout]   --> src/borrow_sender_receiver_channel.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct Receiver<'a, T> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `split` are never used
[INFO] [stdout]   --> src/borrow_sender_receiver_channel.rs:23:18
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl<T> Channel<T> {
[INFO] [stdout]    | ------------------ associated items in this implementation
[INFO] [stdout] 23 |     pub const fn new() -> Self {
[INFO] [stdout]    |                  ^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |     pub fn split<'a>(&'a mut self) -> (Sender<'a, T>, Receiver<'a, T>) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `send` is never used
[INFO] [stdout]   --> src/borrow_sender_receiver_channel.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 36 | impl<T> Sender<'_, T> {
[INFO] [stdout]    | --------------------- method in this implementation
[INFO] [stdout] 37 |     pub fn send(self, message: T) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `is_ready` and `receive` are never used
[INFO] [stdout]   --> src/borrow_sender_receiver_channel.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 43 | impl<T> Receiver<'_, T> {
[INFO] [stdout]    | ----------------------- methods in this implementation
[INFO] [stdout] 44 |     pub fn is_ready(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 |     pub fn receive(self) -> T {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Channel` is never constructed
[INFO] [stdout]  --> src/mutex_channel.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Channel<T> {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `send`, and `receive` are never used
[INFO] [stdout]   --> src/mutex_channel.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl<T> Channel<T> {
[INFO] [stdout]    | ------------------ associated items in this implementation
[INFO] [stdout] 12 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 18 |     pub fn send(&self, message: T) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     pub fn receive(&self) -> T {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Sender` is never constructed
[INFO] [stdout]   --> src/sender_receiver_channel.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Sender<T> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Receiver` is never constructed
[INFO] [stdout]   --> src/sender_receiver_channel.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct Receiver<T> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Channel` is never constructed
[INFO] [stdout]   --> src/sender_receiver_channel.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct Channel<T> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `channel` is never used
[INFO] [stdout]   --> src/sender_receiver_channel.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn channel<T>() -> (Sender<T>, Receiver<T>) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `send` is never used
[INFO] [stdout]   --> src/sender_receiver_channel.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl<T> Sender<T> {
[INFO] [stdout]    | ----------------- method in this implementation
[INFO] [stdout] 34 |     pub fn send(self, message: T) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `is_ready` and `receive` are never used
[INFO] [stdout]   --> src/sender_receiver_channel.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 41 | impl<T> Receiver<T> {
[INFO] [stdout]    | ------------------- methods in this implementation
[INFO] [stdout] 42 |     pub fn is_ready(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 46 |     pub fn receive(self) -> T {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "6003134d77869163fb8aca115be06d23df9cb9153629dbd347dbd90ffa7ef766", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6003134d77869163fb8aca115be06d23df9cb9153629dbd347dbd90ffa7ef766", kill_on_drop: false }`
[INFO] [stdout] 6003134d77869163fb8aca115be06d23df9cb9153629dbd347dbd90ffa7ef766
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 063c88653c5f272d4ffe2e357b34800e1475deb5f3f2217dd101432aeb0d6aac
[INFO] running `Command { std: "docker" "start" "-a" "063c88653c5f272d4ffe2e357b34800e1475deb5f3f2217dd101432aeb0d6aac", kill_on_drop: false }`
[INFO] [stderr]    Compiling channels v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `is_ready` is never used
[INFO] [stdout]   --> src/blocking_channel.rs:58:12
[INFO] [stdout]    |
[INFO] [stdout] 57 | impl<T> Receiver<'_, T> {
[INFO] [stdout]    | ----------------------- method in this implementation
[INFO] [stdout] 58 |     pub fn is_ready(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Channel` is never constructed
[INFO] [stdout]  --> src/mutex_channel.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Channel<T> {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `send`, and `receive` are never used
[INFO] [stdout]   --> src/mutex_channel.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl<T> Channel<T> {
[INFO] [stdout]    | ------------------ associated items in this implementation
[INFO] [stdout] 12 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 18 |     pub fn send(&self, message: T) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     pub fn receive(&self) -> T {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "063c88653c5f272d4ffe2e357b34800e1475deb5f3f2217dd101432aeb0d6aac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "063c88653c5f272d4ffe2e357b34800e1475deb5f3f2217dd101432aeb0d6aac", kill_on_drop: false }`
[INFO] [stdout] 063c88653c5f272d4ffe2e357b34800e1475deb5f3f2217dd101432aeb0d6aac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 152ee8d18c3d5de42420e935804a8bdc7298e6ffae37490886df490251480673
[INFO] running `Command { std: "docker" "start" "-a" "152ee8d18c3d5de42420e935804a8bdc7298e6ffae37490886df490251480673", kill_on_drop: false }`
[INFO] [stderr] warning: method `is_ready` is never used
[INFO] [stderr]   --> src/blocking_channel.rs:58:12
[INFO] [stderr]    |
[INFO] [stderr] 57 | impl<T> Receiver<'_, T> {
[INFO] [stderr]    | ----------------------- method in this implementation
[INFO] [stderr] 58 |     pub fn is_ready(&self) -> bool {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Channel` is never constructed
[INFO] [stderr]  --> src/mutex_channel.rs:7:12
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub struct Channel<T> {
[INFO] [stderr]   |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new`, `send`, and `receive` are never used
[INFO] [stderr]   --> src/mutex_channel.rs:12:12
[INFO] [stderr]    |
[INFO] [stderr] 11 | impl<T> Channel<T> {
[INFO] [stderr]    | ------------------ associated items in this implementation
[INFO] [stderr] 12 |     pub fn new() -> Self {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 18 |     pub fn send(&self, message: T) {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 22 |     pub fn receive(&self) -> T {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `channels` (bin "channels" test) generated 3 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/channels-68206b31b2017850)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test onshot_channel::test::channel_test ... ok
[INFO] [stdout] test sender_receiver_channel::test::sender_receiver ... ok
[INFO] [stdout] test blocking_channel::test::borrow ... ok
[INFO] [stdout] test borrow_sender_receiver_channel::test::borrow ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "152ee8d18c3d5de42420e935804a8bdc7298e6ffae37490886df490251480673", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "152ee8d18c3d5de42420e935804a8bdc7298e6ffae37490886df490251480673", kill_on_drop: false }`
[INFO] [stdout] 152ee8d18c3d5de42420e935804a8bdc7298e6ffae37490886df490251480673
