Dec 17 19:05:05.846 INFO checking mz2212/irondice against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 19:05:05.846 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-1/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/mz2212/irondice:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 19:05:06.183 INFO [stdout] a04bc1824bd7134b41f581dd69e3a23500cfe898d9c9a23393f33aa3e31a0b9d
Dec 17 19:05:06.190 INFO running `"docker" "start" "-a" "a04bc1824bd7134b41f581dd69e3a23500cfe898d9c9a23393f33aa3e31a0b9d"`
Dec 17 19:05:07.383 INFO [stderr]     Checking atty v0.2.6
Dec 17 19:05:07.383 INFO [stderr]     Checking csv v1.0.0-beta.5
Dec 17 19:05:07.779 INFO [stderr]     Checking clap v2.30.0
Dec 17 19:05:12.704 INFO [stderr]     Checking irondice v0.1.0 (/opt/crater/workdir)
Dec 17 19:05:13.260 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.91s
Dec 17 19:05:14.027 INFO running `"docker" "inspect" "a04bc1824bd7134b41f581dd69e3a23500cfe898d9c9a23393f33aa3e31a0b9d"`
Dec 17 19:05:14.298 INFO running `"docker" "rm" "-f" "a04bc1824bd7134b41f581dd69e3a23500cfe898d9c9a23393f33aa3e31a0b9d"`
Dec 17 19:05:14.523 INFO [stdout] a04bc1824bd7134b41f581dd69e3a23500cfe898d9c9a23393f33aa3e31a0b9d