Dec 19 15:50:15.096 INFO checking ifschleife/rust_tracing against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 15:50:15.096 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/ifschleife/rust_tracing:/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 15:50:15.308 INFO [stdout] b4c1bf0a532e42ff72ded046e76bf3ae2efd478ced53c584da2341e137274fea
Dec 19 15:50:15.313 INFO running `"docker" "start" "-a" "b4c1bf0a532e42ff72ded046e76bf3ae2efd478ced53c584da2341e137274fea"`
Dec 19 15:50:16.160 INFO [stderr]     Checking png v0.12.0
Dec 19 15:50:17.114 INFO [stderr]     Checking image v0.19.0
Dec 19 15:50:21.443 INFO [stderr]     Checking rust_tracing v0.1.0 (/opt/crater/workdir)
Dec 19 15:50:22.380 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.38s
Dec 19 15:50:23.072 INFO running `"docker" "inspect" "b4c1bf0a532e42ff72ded046e76bf3ae2efd478ced53c584da2341e137274fea"`
Dec 19 15:50:23.406 INFO running `"docker" "rm" "-f" "b4c1bf0a532e42ff72ded046e76bf3ae2efd478ced53c584da2341e137274fea"`
Dec 19 15:50:23.776 INFO [stdout] b4c1bf0a532e42ff72ded046e76bf3ae2efd478ced53c584da2341e137274fea