[INFO] fetching crate futex_channel 0.0.0...
[INFO] testing futex_channel-0.0.0 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-1
[INFO] extracting crate futex_channel 0.0.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate futex_channel 0.0.0
[INFO] finished tweaking crates.io crate futex_channel 0.0.0
[INFO] tweaked toml for crates.io crate futex_channel 0.0.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate futex_channel 0.0.0 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 5 packages to latest compatible versions
[INFO] [stderr]       Adding linux-futex v0.1.2 (available: v1.0.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 186c5af0ef13d47383e6c9270d1ca17f9f2d220f32efc636fd5351fda5ae1e28
[INFO] running `Command { std: "docker" "start" "-a" "186c5af0ef13d47383e6c9270d1ca17f9f2d220f32efc636fd5351fda5ae1e28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "186c5af0ef13d47383e6c9270d1ca17f9f2d220f32efc636fd5351fda5ae1e28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "186c5af0ef13d47383e6c9270d1ca17f9f2d220f32efc636fd5351fda5ae1e28", kill_on_drop: false }`
[INFO] [stdout] 186c5af0ef13d47383e6c9270d1ca17f9f2d220f32efc636fd5351fda5ae1e28
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eef89b31a9810a5abd3f5940efbcd281dcf3cf04d1f888eb8fe1987d4f85c059
[INFO] running `Command { std: "docker" "start" "-a" "eef89b31a9810a5abd3f5940efbcd281dcf3cf04d1f888eb8fe1987d4f85c059", kill_on_drop: false }`
[INFO] [stderr]    Compiling linux-futex v0.1.2
[INFO] [stderr]    Compiling futex_channel v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `push_front` is never used
[INFO] [stdout]   --> src/inner.rs:65:19
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl<T> Inner<T> {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 65 |     pub(crate) fn push_front(&self, obj: T) -> AppendResult {
[INFO] [stdout]    |                   ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "eef89b31a9810a5abd3f5940efbcd281dcf3cf04d1f888eb8fe1987d4f85c059", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eef89b31a9810a5abd3f5940efbcd281dcf3cf04d1f888eb8fe1987d4f85c059", kill_on_drop: false }`
[INFO] [stdout] eef89b31a9810a5abd3f5940efbcd281dcf3cf04d1f888eb8fe1987d4f85c059
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dc0c1f6bb48ef0b630b47877a1f8d31a93505223a73d20a192897793ee8d9c7d
[INFO] running `Command { std: "docker" "start" "-a" "dc0c1f6bb48ef0b630b47877a1f8d31a93505223a73d20a192897793ee8d9c7d", kill_on_drop: false }`
[INFO] [stderr]    Compiling threadpool v1.8.1
[INFO] [stdout] warning: method `push_front` is never used
[INFO] [stdout]   --> src/inner.rs:65:19
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl<T> Inner<T> {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 65 |     pub(crate) fn push_front(&self, obj: T) -> AppendResult {
[INFO] [stdout]    |                   ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling futex_channel v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "dc0c1f6bb48ef0b630b47877a1f8d31a93505223a73d20a192897793ee8d9c7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc0c1f6bb48ef0b630b47877a1f8d31a93505223a73d20a192897793ee8d9c7d", kill_on_drop: false }`
[INFO] [stdout] dc0c1f6bb48ef0b630b47877a1f8d31a93505223a73d20a192897793ee8d9c7d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b8738d8341658213094f37ac2ff9d04118d51bfc48c0e9f2b4e6b1573f2b4e8a
[INFO] running `Command { std: "docker" "start" "-a" "b8738d8341658213094f37ac2ff9d04118d51bfc48c0e9f2b4e6b1573f2b4e8a", kill_on_drop: false }`
[INFO] [stderr] warning: method `push_front` is never used
[INFO] [stderr]   --> src/inner.rs:65:19
[INFO] [stderr]    |
[INFO] [stderr] 19 | impl<T> Inner<T> {
[INFO] [stderr]    | ---------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 65 |     pub(crate) fn push_front(&self, obj: T) -> AppendResult {
[INFO] [stderr]    |                   ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `futex_channel` (lib) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/futex_channel-f91595db33a69dae)
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test inner::tests::append ... ok
[INFO] [stdout] test inner::tests::append_pop_front_empty ... ok
[INFO] [stdout] test inner::tests::pop_front_empty ... ok
[INFO] [stdout] test inner::tests::pass_three_elements_fifo ... ok
[INFO] [stdout] test inner::tests::pass_three_elements ... ok
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] test tests::multiple_inserter_while_pulling ... FAILED
[INFO] [stdout] test tests::single_inserter ... FAILED
[INFO] [stdout] test tests::multiple_inserter has been running for over 60 seconds
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "b8738d8341658213094f37ac2ff9d04118d51bfc48c0e9f2b4e6b1573f2b4e8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8738d8341658213094f37ac2ff9d04118d51bfc48c0e9f2b4e6b1573f2b4e8a", kill_on_drop: false }`
[INFO] [stdout] b8738d8341658213094f37ac2ff9d04118d51bfc48c0e9f2b4e6b1573f2b4e8a