Dec 19 20:50:43.232 INFO checking akxcv/b against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 20:50:43.232 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-6/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/akxcv/b:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 20:50:43.624 INFO [stdout] 4b2f675259c51803ea1c08b0fb389b181337a87d0e05e8cc1f18dd87d44e0af2
Dec 19 20:50:43.632 INFO running `"docker" "start" "-a" "4b2f675259c51803ea1c08b0fb389b181337a87d0e05e8cc1f18dd87d44e0af2"`
Dec 19 20:50:44.871 INFO [stderr]     Checking termion v1.5.1
Dec 19 20:50:44.872 INFO [stderr]     Checking env_logger v0.4.3
Dec 19 20:50:45.854 INFO [stderr]     Checking skim v0.5.2
Dec 19 20:50:47.798 INFO [stderr]     Checking b v0.1.0 (/opt/crater/workdir)
Dec 19 20:50:48.705 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.97s
Dec 19 20:50:49.502 INFO running `"docker" "inspect" "4b2f675259c51803ea1c08b0fb389b181337a87d0e05e8cc1f18dd87d44e0af2"`
Dec 19 20:50:49.718 INFO running `"docker" "rm" "-f" "4b2f675259c51803ea1c08b0fb389b181337a87d0e05e8cc1f18dd87d44e0af2"`
Dec 19 20:50:49.998 INFO [stdout] 4b2f675259c51803ea1c08b0fb389b181337a87d0e05e8cc1f18dd87d44e0af2