Dec 18 16:31:27.777 INFO checking filebuffer-0.4.0 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 16:31:27.778 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/reg/filebuffer/0.4.0:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 16:31:28.079 INFO [stdout] 74bd52285d3ed078d6a25b631932252f116e410b9b91bf81662702f29e485a4f
Dec 18 16:31:28.082 INFO running `"docker" "start" "-a" "74bd52285d3ed078d6a25b631932252f116e410b9b91bf81662702f29e485a4f"`
Dec 18 16:31:29.088 INFO [stderr]     Checking gcc v0.3.35
Dec 18 16:31:29.089 INFO [stderr]     Checking filebuffer v0.4.0 (/opt/crater/workdir)
Dec 18 16:31:29.089 INFO [stderr]     Checking time v0.1.35
Dec 18 16:31:29.845 INFO [stderr]     Checking rust-crypto v0.2.36
Dec 18 16:31:34.852 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.80s
Dec 18 16:31:35.061 INFO running `"docker" "inspect" "74bd52285d3ed078d6a25b631932252f116e410b9b91bf81662702f29e485a4f"`
Dec 18 16:31:35.150 INFO running `"docker" "rm" "-f" "74bd52285d3ed078d6a25b631932252f116e410b9b91bf81662702f29e485a4f"`
Dec 18 16:31:35.216 INFO [stdout] 74bd52285d3ed078d6a25b631932252f116e410b9b91bf81662702f29e485a4f