Dec 17 21:16:37.836 INFO checking kolybasov/fm_tree against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 21:16:37.836 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/kolybasov/fm_tree:/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 21:16:38.306 INFO [stdout] ab15f25dc96f4d2fb1d18898c51b0bddb3338d0719e55a5e7c9f5052b18256af
Dec 17 21:16:38.314 INFO running `"docker" "start" "-a" "ab15f25dc96f4d2fb1d18898c51b0bddb3338d0719e55a5e7c9f5052b18256af"`
Dec 17 21:16:39.916 INFO [stderr]     Checking serde_json v1.0.9
Dec 17 21:16:39.916 INFO [stderr]     Checking serde_yaml v0.7.3
Dec 17 21:16:42.616 INFO [stderr]     Checking fm_tree v0.1.0 (/opt/crater/workdir)
Dec 17 21:16:43.160 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.33s
Dec 17 21:16:43.816 INFO running `"docker" "inspect" "ab15f25dc96f4d2fb1d18898c51b0bddb3338d0719e55a5e7c9f5052b18256af"`
Dec 17 21:16:44.202 INFO running `"docker" "rm" "-f" "ab15f25dc96f4d2fb1d18898c51b0bddb3338d0719e55a5e7c9f5052b18256af"`
Dec 17 21:16:44.579 INFO [stdout] ab15f25dc96f4d2fb1d18898c51b0bddb3338d0719e55a5e7c9f5052b18256af