[INFO] fetching crate mossfets-game-of-life 0.8.0...
[INFO] testing mossfets-game-of-life-0.8.0 against 1.91.0 for beta-1.92-2
[INFO] extracting crate mossfets-game-of-life 0.8.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate mossfets-game-of-life 0.8.0
[INFO] finished tweaking crates.io crate mossfets-game-of-life 0.8.0
[INFO] tweaked toml for crates.io crate mossfets-game-of-life 0.8.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mossfets-game-of-life 0.8.0 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "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" "+1.91.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 7 packages to latest compatible versions
[INFO] [stderr]       Adding rustc-hash v1.1.0 (available: v2.1.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crossbeam-deque v0.8.6
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.18
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.21
[INFO] [stderr]   Downloaded rayon-core v1.13.0
[INFO] [stderr]   Downloaded rayon v1.11.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4bdacb88bfe285d3dcd6feec6dfba0d59d213196a6c37fc4e5ce6e4e18867246
[INFO] running `Command { std: "docker" "start" "-a" "4bdacb88bfe285d3dcd6feec6dfba0d59d213196a6c37fc4e5ce6e4e18867246", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4bdacb88bfe285d3dcd6feec6dfba0d59d213196a6c37fc4e5ce6e4e18867246", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4bdacb88bfe285d3dcd6feec6dfba0d59d213196a6c37fc4e5ce6e4e18867246", kill_on_drop: false }`
[INFO] [stdout] 4bdacb88bfe285d3dcd6feec6dfba0d59d213196a6c37fc4e5ce6e4e18867246
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3fd678d4913370e6be1749e314166ae5a6d4dd295a49e34c6e29bc32c01eae91
[INFO] running `Command { std: "docker" "start" "-a" "3fd678d4913370e6be1749e314166ae5a6d4dd295a49e34c6e29bc32c01eae91", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling rayon-core v1.13.0
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling crossbeam-deque v0.8.6
[INFO] [stderr]    Compiling rayon v1.11.0
[INFO] [stderr]    Compiling mossfets-game-of-life v0.8.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.63s
[INFO] running `Command { std: "docker" "inspect" "3fd678d4913370e6be1749e314166ae5a6d4dd295a49e34c6e29bc32c01eae91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fd678d4913370e6be1749e314166ae5a6d4dd295a49e34c6e29bc32c01eae91", kill_on_drop: false }`
[INFO] [stdout] 3fd678d4913370e6be1749e314166ae5a6d4dd295a49e34c6e29bc32c01eae91
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 30dd0f4d7c9926724645fab355d8cd43666fcad4581d41899467bbba2ebfe34a
[INFO] running `Command { std: "docker" "start" "-a" "30dd0f4d7c9926724645fab355d8cd43666fcad4581d41899467bbba2ebfe34a", kill_on_drop: false }`
[INFO] [stderr]    Compiling mossfets-game-of-life v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> tests/filetest.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> tests/filetest.rs:15:27
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn test_spacefiller_perf (b: &mut Bencher) -> impl Termination{
[INFO] [stdout]    |                           ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> tests/filetest.rs:23:26
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn test_rpentomino_perf (b: &mut Bencher) -> impl Termination{
[INFO] [stdout]    |                          ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mossfets-game-of-life` (test "filetest") due to 1 previous error; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "30dd0f4d7c9926724645fab355d8cd43666fcad4581d41899467bbba2ebfe34a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30dd0f4d7c9926724645fab355d8cd43666fcad4581d41899467bbba2ebfe34a", kill_on_drop: false }`
[INFO] [stdout] 30dd0f4d7c9926724645fab355d8cd43666fcad4581d41899467bbba2ebfe34a