Dec 19 16:42:36.655 INFO checking gagyibenedek/rust-fun against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 16:42:36.655 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/gagyibenedek/rust-fun:/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 16:42:37.050 INFO [stdout] f990d2755f66f04a3d31b32639b9c4cf5d48f88ed5b3db2e9b45645f365f0bf2
Dec 19 16:42:37.054 INFO running `"docker" "start" "-a" "f990d2755f66f04a3d31b32639b9c4cf5d48f88ed5b3db2e9b45645f365f0bf2"`
Dec 19 16:42:38.250 INFO [stderr]     Checking png v0.8.0
Dec 19 16:42:39.163 INFO [stderr]     Checking image v0.14.0
Dec 19 16:42:43.066 INFO [stderr]     Checking triangle v0.1.0 (/opt/crater/workdir)
Dec 19 16:42:43.969 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.79s
Dec 19 16:42:44.824 INFO running `"docker" "inspect" "f990d2755f66f04a3d31b32639b9c4cf5d48f88ed5b3db2e9b45645f365f0bf2"`
Dec 19 16:42:45.144 INFO running `"docker" "rm" "-f" "f990d2755f66f04a3d31b32639b9c4cf5d48f88ed5b3db2e9b45645f365f0bf2"`
Dec 19 16:42:45.472 INFO [stdout] f990d2755f66f04a3d31b32639b9c4cf5d48f88ed5b3db2e9b45645f365f0bf2