Dec 19 19:18:50.015 INFO checking carlgreen/raytracer against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 19:18:50.015 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-0/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/carlgreen/raytracer:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 19:18:50.428 INFO [stdout] 3150e4a635dcc9b897429921ae9d1775bfccb32963877edf3c7ec90882653a4d
Dec 19 19:18:50.436 INFO running `"docker" "start" "-a" "3150e4a635dcc9b897429921ae9d1775bfccb32963877edf3c7ec90882653a4d"`
Dec 19 19:18:52.760 INFO [stderr]     Checking num-rational v0.1.40
Dec 19 19:18:52.760 INFO [stderr]     Checking png v0.11.0
Dec 19 19:18:54.521 INFO [stderr]     Checking image v0.18.0
Dec 19 19:18:58.812 INFO [stderr]     Checking raytracer v0.1.0 (/opt/crater/workdir)
Dec 19 19:18:59.509 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.84s
Dec 19 19:18:59.794 INFO running `"docker" "inspect" "3150e4a635dcc9b897429921ae9d1775bfccb32963877edf3c7ec90882653a4d"`
Dec 19 19:18:59.904 INFO running `"docker" "rm" "-f" "3150e4a635dcc9b897429921ae9d1775bfccb32963877edf3c7ec90882653a4d"`
Dec 19 19:19:00.040 INFO [stdout] 3150e4a635dcc9b897429921ae9d1775bfccb32963877edf3c7ec90882653a4d