Dec 19 20:51:59.723 INFO checking akito19/rsgrep against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 20:51:59.723 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/akito19/rsgrep:/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 20:52:00.243 INFO [stdout] 0a96687c0f158722af068fe52425937dff792482fa8f22084a3e889db8c949f2
Dec 19 20:52:00.246 INFO running `"docker" "start" "-a" "0a96687c0f158722af068fe52425937dff792482fa8f22084a3e889db8c949f2"`
Dec 19 20:52:01.580 INFO [stderr]     Checking libc v0.2.26
Dec 19 20:52:02.531 INFO [stderr]     Checking memchr v1.0.1
Dec 19 20:52:02.836 INFO [stderr]     Checking aho-corasick v0.6.3
Dec 19 20:52:03.453 INFO [stderr]     Checking regex v0.2.2
Dec 19 20:52:05.441 INFO [stderr]     Checking rsgrep v0.1.0 (/opt/crater/workdir)
Dec 19 20:52:05.864 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.32s
Dec 19 20:52:06.644 INFO running `"docker" "inspect" "0a96687c0f158722af068fe52425937dff792482fa8f22084a3e889db8c949f2"`
Dec 19 20:52:06.892 INFO running `"docker" "rm" "-f" "0a96687c0f158722af068fe52425937dff792482fa8f22084a3e889db8c949f2"`
Dec 19 20:52:07.172 INFO [stdout] 0a96687c0f158722af068fe52425937dff792482fa8f22084a3e889db8c949f2