[INFO] fetching crate ringmaster 0.2.1...
[INFO] testing ringmaster-0.2.1 against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] extracting crate ringmaster 0.2.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate ringmaster 0.2.1 on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ringmaster 0.2.1
[INFO] finished tweaking crates.io crate ringmaster 0.2.1
[INFO] tweaked toml for crates.io crate ringmaster 0.2.1 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 02d0f599400f38b0e976f776bd8a0eb21a8dd4b7bca08fa53018a1503e08050f
[INFO] running `Command { std: "docker" "start" "-a" "02d0f599400f38b0e976f776bd8a0eb21a8dd4b7bca08fa53018a1503e08050f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "02d0f599400f38b0e976f776bd8a0eb21a8dd4b7bca08fa53018a1503e08050f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02d0f599400f38b0e976f776bd8a0eb21a8dd4b7bca08fa53018a1503e08050f", kill_on_drop: false }`
[INFO] [stdout] 02d0f599400f38b0e976f776bd8a0eb21a8dd4b7bca08fa53018a1503e08050f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 07c8ffc9c4b04b4c1a777d5ef28487413026e2e8984fa1042adad29ed736e9da
[INFO] running `Command { std: "docker" "start" "-a" "07c8ffc9c4b04b4c1a777d5ef28487413026e2e8984fa1042adad29ed736e9da", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]    Compiling tokio v0.2.25
[INFO] [stderr]    Compiling ringmaster v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Root`
[INFO] [stdout]  --> src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Root{ prev: usize, next: usize },
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Box`
[INFO] [stdout]  --> src/lib.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Box{ prev: usize, next: usize, item: T},
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `LIFO`
[INFO] [stdout]   --> src/lib.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     LIFO,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `buffer`
[INFO] [stdout]   --> src/lib.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     buffer: Mutex<Vec<RingBox<T>>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `mode`
[INFO] [stdout]   --> src/lib.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     mode: Mode,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/lib.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_fifo`
[INFO] [stdout]   --> src/lib.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn as_fifo(self) -> Self {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_lifo`
[INFO] [stdout]   --> src/lib.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn as_lifo(self) -> Self {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from`
[INFO] [stdout]   --> src/lib.rs:49:14
[INFO] [stdout]    |
[INFO] [stdout] 49 |     async fn from(vec: Vec<T>) -> Self {
[INFO] [stdout]    |              ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_empty`
[INFO] [stdout]   --> src/lib.rs:57:14
[INFO] [stdout]    |
[INFO] [stdout] 57 |     async fn is_empty(&self) -> bool {
[INFO] [stdout]    |              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push`
[INFO] [stdout]   --> src/lib.rs:61:14
[INFO] [stdout]    |
[INFO] [stdout] 61 |     async fn push(&self, item: T) {
[INFO] [stdout]    |              ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `poll`
[INFO] [stdout]   --> src/lib.rs:84:14
[INFO] [stdout]    |
[INFO] [stdout] 84 |     async fn poll(&self) -> Option<T> {
[INFO] [stdout]    |              ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `poll_with`
[INFO] [stdout]    --> src/lib.rs:150:14
[INFO] [stdout]     |
[INFO] [stdout] 150 |     async fn poll_with(&self, f: fn(&T) -> bool) -> Option<T> {
[INFO] [stdout]     |              ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.10s
[INFO] running `Command { std: "docker" "inspect" "07c8ffc9c4b04b4c1a777d5ef28487413026e2e8984fa1042adad29ed736e9da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07c8ffc9c4b04b4c1a777d5ef28487413026e2e8984fa1042adad29ed736e9da", kill_on_drop: false }`
[INFO] [stdout] 07c8ffc9c4b04b4c1a777d5ef28487413026e2e8984fa1042adad29ed736e9da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 564fecd9497a8e080cc2936355a8167c9ac3965a0590799e5b8f7e9efabd4791
[INFO] running `Command { std: "docker" "start" "-a" "564fecd9497a8e080cc2936355a8167c9ac3965a0590799e5b8f7e9efabd4791", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]    Compiling ringmaster v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Root`
[INFO] [stdout]  --> src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Root{ prev: usize, next: usize },
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Box`
[INFO] [stdout]  --> src/lib.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Box{ prev: usize, next: usize, item: T},
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `LIFO`
[INFO] [stdout]   --> src/lib.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     LIFO,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `buffer`
[INFO] [stdout]   --> src/lib.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     buffer: Mutex<Vec<RingBox<T>>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `mode`
[INFO] [stdout]   --> src/lib.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     mode: Mode,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/lib.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_fifo`
[INFO] [stdout]   --> src/lib.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn as_fifo(self) -> Self {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_lifo`
[INFO] [stdout]   --> src/lib.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn as_lifo(self) -> Self {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from`
[INFO] [stdout]   --> src/lib.rs:49:14
[INFO] [stdout]    |
[INFO] [stdout] 49 |     async fn from(vec: Vec<T>) -> Self {
[INFO] [stdout]    |              ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_empty`
[INFO] [stdout]   --> src/lib.rs:57:14
[INFO] [stdout]    |
[INFO] [stdout] 57 |     async fn is_empty(&self) -> bool {
[INFO] [stdout]    |              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push`
[INFO] [stdout]   --> src/lib.rs:61:14
[INFO] [stdout]    |
[INFO] [stdout] 61 |     async fn push(&self, item: T) {
[INFO] [stdout]    |              ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `poll`
[INFO] [stdout]   --> src/lib.rs:84:14
[INFO] [stdout]    |
[INFO] [stdout] 84 |     async fn poll(&self) -> Option<T> {
[INFO] [stdout]    |              ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `poll_with`
[INFO] [stdout]    --> src/lib.rs:150:14
[INFO] [stdout]     |
[INFO] [stdout] 150 |     async fn poll_with(&self, f: fn(&T) -> bool) -> Option<T> {
[INFO] [stdout]     |              ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_fifo`
[INFO] [stdout]   --> src/lib.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn as_fifo(self) -> Self {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.39s
[INFO] running `Command { std: "docker" "inspect" "564fecd9497a8e080cc2936355a8167c9ac3965a0590799e5b8f7e9efabd4791", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "564fecd9497a8e080cc2936355a8167c9ac3965a0590799e5b8f7e9efabd4791", kill_on_drop: false }`
[INFO] [stdout] 564fecd9497a8e080cc2936355a8167c9ac3965a0590799e5b8f7e9efabd4791
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a1bda6633f803e50752d1be8605b5a756d77dc10ec18b74b566e6c0cf5b35beb
[INFO] running `Command { std: "docker" "start" "-a" "a1bda6633f803e50752d1be8605b5a756d77dc10ec18b74b566e6c0cf5b35beb", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stdout] 
[INFO] [stderr] warning: variant is never constructed: `Root`
[INFO] [stdout] running 7 tests
[INFO] [stderr]  --> src/lib.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     Root{ prev: usize, next: usize },
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Box`
[INFO] [stderr]  --> src/lib.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Box{ prev: usize, next: usize, item: T},
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `LIFO`
[INFO] [stderr]   --> src/lib.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     LIFO,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `buffer`
[INFO] [stderr]   --> src/lib.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     buffer: Mutex<Vec<RingBox<T>>>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `mode`
[INFO] [stderr]   --> src/lib.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     mode: Mode,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/lib.rs:28:8
[INFO] [stderr]    |
[INFO] [stderr] 28 |     fn new() -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `as_fifo`
[INFO] [stderr]   --> src/lib.rs:35:8
[INFO] [stderr]    |
[INFO] [stderr] 35 |     fn as_fifo(self) -> Self {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `as_lifo`
[INFO] [stderr]   --> src/lib.rs:42:8
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn as_lifo(self) -> Self {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `from`
[INFO] [stderr]   --> src/lib.rs:49:14
[INFO] [stderr]    |
[INFO] [stderr] 49 |     async fn from(vec: Vec<T>) -> Self {
[INFO] [stderr]    |              ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_empty`
[INFO] [stderr]   --> src/lib.rs:57:14
[INFO] [stderr]    |
[INFO] [stderr] 57 |     async fn is_empty(&self) -> bool {
[INFO] [stderr]    |              ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `push`
[INFO] [stderr]   --> src/lib.rs:61:14
[INFO] [stderr]    |
[INFO] [stderr] 61 |     async fn push(&self, item: T) {
[INFO] [stderr]    |              ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `poll`
[INFO] [stderr]   --> src/lib.rs:84:14
[INFO] [stderr]    |
[INFO] [stderr] 84 |     async fn poll(&self) -> Option<T> {
[INFO] [stderr]    |              ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `poll_with`
[INFO] [stderr]    --> src/lib.rs:150:14
[INFO] [stderr]     |
[INFO] [stderr] 150 |     async fn poll_with(&self, f: fn(&T) -> bool) -> Option<T> {
[INFO] [stderr]     |              ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 13 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `as_fifo`
[INFO] [stderr]   --> src/lib.rs:35:8
[INFO] [stderr]    |
[INFO] [stderr] 35 |     fn as_fifo(self) -> Self {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ringmaster-b5517cf0133b873e)
[INFO] [stdout] test tests::from ... ok
[INFO] [stdout] test tests::poll_with ... ok
[INFO] [stdout] test tests::is_empty ... ok
[INFO] [stdout] test tests::lifo_push_poll ... ok
[INFO] [stdout] test tests::push ... ok
[INFO] [stdout] test tests::poll ... ok
[INFO] [stdout] test tests::push_poll ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ringmaster
[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" "a1bda6633f803e50752d1be8605b5a756d77dc10ec18b74b566e6c0cf5b35beb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1bda6633f803e50752d1be8605b5a756d77dc10ec18b74b566e6c0cf5b35beb", kill_on_drop: false }`
[INFO] [stdout] a1bda6633f803e50752d1be8605b5a756d77dc10ec18b74b566e6c0cf5b35beb