Dec 19 10:38:58.981 INFO checking pythoneer/ffic against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 10:38:58.981 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-7/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/pythoneer/ffic:/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 10:38:59.400 INFO [stdout] 2f15b37dfd075ac21aacff8e1e83345e21184508272d65e7dafd9e8bb33a5dca
Dec 19 10:38:59.408 INFO running `"docker" "start" "-a" "2f15b37dfd075ac21aacff8e1e83345e21184508272d65e7dafd9e8bb33a5dca"`
Dec 19 10:39:01.516 INFO [stderr]    Compiling gcc v0.3.35
Dec 19 10:39:03.876 INFO [stderr]    Compiling ffic v0.1.0 (/opt/crater/workdir)
Dec 19 10:39:04.480 INFO [stderr] warning: ar: `u' modifier ignored since `D' is the default (see `U')
Dec 19 10:39:04.816 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.34s
Dec 19 10:39:05.898 INFO running `"docker" "inspect" "2f15b37dfd075ac21aacff8e1e83345e21184508272d65e7dafd9e8bb33a5dca"`
Dec 19 10:39:06.278 INFO running `"docker" "rm" "-f" "2f15b37dfd075ac21aacff8e1e83345e21184508272d65e7dafd9e8bb33a5dca"`
Dec 19 10:39:06.500 INFO [stdout] 2f15b37dfd075ac21aacff8e1e83345e21184508272d65e7dafd9e8bb33a5dca