[INFO] fetching crate mossfets-game-of-life 0.8.0...
[INFO] checking mossfets-game-of-life-0.8.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate mossfets-game-of-life 0.8.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate mossfets-game-of-life 0.8.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 8 packages
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4bd4ae34d9fad27aeca0faa96894e4193bfa783dafabda4c95d9c4714f1a40a0
[INFO] running `Command { std: "docker" "start" "-a" "4bd4ae34d9fad27aeca0faa96894e4193bfa783dafabda4c95d9c4714f1a40a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4bd4ae34d9fad27aeca0faa96894e4193bfa783dafabda4c95d9c4714f1a40a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4bd4ae34d9fad27aeca0faa96894e4193bfa783dafabda4c95d9c4714f1a40a0", kill_on_drop: false }`
[INFO] [stdout] 4bd4ae34d9fad27aeca0faa96894e4193bfa783dafabda4c95d9c4714f1a40a0
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0dc7a9267b3ba582d942be738407d83d2778b454d0ca960a9aa2b2f91d913ed6
[INFO] running `Command { std: "docker" "start" "-a" "0dc7a9267b3ba582d942be738407d83d2778b454d0ca960a9aa2b2f91d913ed6", kill_on_drop: false }`
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking mossfets-game-of-life v0.8.0 (/opt/rustwide/workdir)
[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)]` 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] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.76s
[INFO] running `Command { std: "docker" "inspect" "0dc7a9267b3ba582d942be738407d83d2778b454d0ca960a9aa2b2f91d913ed6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0dc7a9267b3ba582d942be738407d83d2778b454d0ca960a9aa2b2f91d913ed6", kill_on_drop: false }`
[INFO] [stdout] 0dc7a9267b3ba582d942be738407d83d2778b454d0ca960a9aa2b2f91d913ed6