[INFO] cloning repository https://github.com/ImageOptim/gifski
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ImageOptim/gifski" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FImageOptim%2Fgifski"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FImageOptim%2Fgifski'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d8357dec3608f9d9de6426c44907442aea62a2cf
[INFO] checking ImageOptim/gifski against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FImageOptim%2Fgifski" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ImageOptim/gifski on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ImageOptim/gifski
[INFO] finished tweaking git repo https://github.com/ImageOptim/gifski
[INFO] tweaked toml for git repo https://github.com/ImageOptim/gifski written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/ImageOptim/gifski already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 37fd1ee10162ddc827f1c815ba742c5ab1133eac7bbb661e64f11dceca9321a5
[INFO] running `"docker" "start" "-a" "37fd1ee10162ddc827f1c815ba742c5ab1133eac7bbb661e64f11dceca9321a5"`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling cc v1.0.45
[INFO] [stderr]    Compiling arrayvec v0.4.11
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]     Checking rgb v0.8.14
[INFO] [stderr]    Compiling bitflags v1.2.0
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking imgref v1.4.0
[INFO] [stderr]     Checking wild v2.0.2
[INFO] [stderr]     Checking natord v1.0.9
[INFO] [stderr]     Checking resize v0.3.0
[INFO] [stderr]     Checking gif-dispose v2.2.0
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking lodepng v2.5.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking pbr v1.0.2
[INFO] [stderr]     Checking rayon-core v1.6.0
[INFO] [stderr]     Checking rayon v1.2.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling imagequant-sys v2.12.5
[INFO] [stderr]     Checking backtrace v0.3.38
[INFO] [stderr]     Checking imagequant v2.11.9
[INFO] [stderr]     Checking error-chain v0.12.1
[INFO] [stderr]     Checking gifski v0.9.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [optimized + debuginfo] target(s) in 32.27s
[INFO] running `"docker" "inspect" "37fd1ee10162ddc827f1c815ba742c5ab1133eac7bbb661e64f11dceca9321a5"`
[INFO] running `"docker" "rm" "-f" "37fd1ee10162ddc827f1c815ba742c5ab1133eac7bbb661e64f11dceca9321a5"`
[INFO] [stdout] 37fd1ee10162ddc827f1c815ba742c5ab1133eac7bbb661e64f11dceca9321a5