Dec 19 13:50:23.255 INFO checking larswaechter/Acrop against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 13:50:23.255 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/larswaechter/Acrop:/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 13:50:23.736 INFO [stdout] 729b31492cfe0562b4abd9ac5558e12a79d0abb0415677425a3002c30ded345a
Dec 19 13:50:23.738 INFO running `"docker" "start" "-a" "729b31492cfe0562b4abd9ac5558e12a79d0abb0415677425a3002c30ded345a"`
Dec 19 13:50:25.308 INFO [stderr]    Compiling syn v0.15.15
Dec 19 13:50:34.300 INFO [stderr]    Compiling num-derive v0.2.3
Dec 19 13:50:40.276 INFO [stderr]     Checking tiff v0.2.1
Dec 19 13:50:41.288 INFO [stderr]     Checking image v0.20.0
Dec 19 13:50:46.256 INFO [stderr]     Checking acrop v0.1.0 (/opt/crater/workdir)
Dec 19 13:50:47.188 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.08s
Dec 19 13:50:48.194 INFO running `"docker" "inspect" "729b31492cfe0562b4abd9ac5558e12a79d0abb0415677425a3002c30ded345a"`
Dec 19 13:50:48.526 INFO running `"docker" "rm" "-f" "729b31492cfe0562b4abd9ac5558e12a79d0abb0415677425a3002c30ded345a"`
Dec 19 13:50:48.820 INFO [stdout] 729b31492cfe0562b4abd9ac5558e12a79d0abb0415677425a3002c30ded345a