Dec 19 10:22:26.068 INFO checking rbspy/proc-maps against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 10:22:26.068 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-6/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/rbspy/proc-maps:/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 10:22:26.394 INFO [stdout] 7b78841b7fea5ee765c954d3ff08d8302b2e92ca414410022a558e5c33b54683
Dec 19 10:22:26.395 INFO running `"docker" "start" "-a" "7b78841b7fea5ee765c954d3ff08d8302b2e92ca414410022a558e5c33b54683"`
Dec 19 10:22:27.439 INFO [stderr]    Compiling backtrace-sys v0.1.24
Dec 19 10:22:29.161 INFO [stderr]     Checking backtrace v0.3.9
Dec 19 10:22:29.577 INFO [stderr]     Checking failure v0.1.2
Dec 19 10:22:30.004 INFO [stderr]     Checking proc-maps v0.1.5 (/opt/crater/workdir)
Dec 19 10:22:30.432 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.07s
Dec 19 10:22:30.838 INFO running `"docker" "inspect" "7b78841b7fea5ee765c954d3ff08d8302b2e92ca414410022a558e5c33b54683"`
Dec 19 10:22:31.001 INFO running `"docker" "rm" "-f" "7b78841b7fea5ee765c954d3ff08d8302b2e92ca414410022a558e5c33b54683"`
Dec 19 10:22:31.288 INFO [stdout] 7b78841b7fea5ee765c954d3ff08d8302b2e92ca414410022a558e5c33b54683