Dec 17 21:34:48.717 INFO checking kennerleyb/Rust-Mandlebrot against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 21:34:48.717 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/kennerleyb/Rust-Mandlebrot:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 21:34:49.152 INFO [stdout] b9885b6c3b88824562ea531dec02de363568580c01b4f43fd021b6014d7abc58
Dec 17 21:34:49.158 INFO running `"docker" "start" "-a" "b9885b6c3b88824562ea531dec02de363568580c01b4f43fd021b6014d7abc58"`
Dec 17 21:34:50.985 INFO [stderr]     Checking png v0.6.2
Dec 17 21:34:52.060 INFO [stderr]     Checking image v0.12.4
Dec 17 21:34:55.942 INFO [stderr]     Checking rust-mandlebrot v0.1.0 (/opt/crater/workdir)
Dec 17 21:34:56.782 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.93s
Dec 17 21:34:58.262 INFO running `"docker" "inspect" "b9885b6c3b88824562ea531dec02de363568580c01b4f43fd021b6014d7abc58"`
Dec 17 21:34:58.558 INFO running `"docker" "rm" "-f" "b9885b6c3b88824562ea531dec02de363568580c01b4f43fd021b6014d7abc58"`
Dec 17 21:34:58.768 INFO [stdout] b9885b6c3b88824562ea531dec02de363568580c01b4f43fd021b6014d7abc58