Dec 18 03:23:20.450 INFO checking benrady/mandelbrot against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 03:23:20.450 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/benrady/mandelbrot:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 03:23:20.990 INFO [stdout] 86b1fd22c97967cc59c71de50a0730e77d5ece769fd533fd6eca0dff44910c7a
Dec 18 03:23:20.992 INFO running `"docker" "start" "-a" "86b1fd22c97967cc59c71de50a0730e77d5ece769fd533fd6eca0dff44910c7a"`
Dec 18 03:23:23.120 INFO [stderr]     Checking png v0.7.0
Dec 18 03:23:24.154 INFO [stderr]     Checking image v0.13.0
Dec 18 03:23:27.875 INFO [stderr]     Checking mandelbrot v0.1.0 (/opt/crater/workdir)
Dec 18 03:23:29.010 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.01s
Dec 18 03:23:29.826 INFO running `"docker" "inspect" "86b1fd22c97967cc59c71de50a0730e77d5ece769fd533fd6eca0dff44910c7a"`
Dec 18 03:23:30.184 INFO running `"docker" "rm" "-f" "86b1fd22c97967cc59c71de50a0730e77d5ece769fd533fd6eca0dff44910c7a"`
Dec 18 03:23:30.513 INFO [stdout] 86b1fd22c97967cc59c71de50a0730e77d5ece769fd533fd6eca0dff44910c7a