Dec 19 08:14:07.000 INFO checking stallmanifold/rtfm against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 08:14:07.000 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/stallmanifold/rtfm:/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 08:14:07.196 INFO [stdout] eb2d7eadfc1a46db9825fcee8f34ce0c2b293628c90a6e197989f941b625d3a7
Dec 19 08:14:07.200 INFO running `"docker" "start" "-a" "eb2d7eadfc1a46db9825fcee8f34ce0c2b293628c90a6e197989f941b625d3a7"`
Dec 19 08:14:08.148 INFO [stderr]    Compiling syn v0.15.21
Dec 19 08:14:08.148 INFO [stderr]     Checking rand v0.6.0
Dec 19 08:14:19.565 INFO [stderr]    Compiling serde_derive v1.0.80
Dec 19 08:14:31.940 INFO [stderr]     Checking rtfm v1.1.0 (/opt/crater/workdir)
Dec 19 08:14:32.376 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.36s
Dec 19 08:14:33.003 INFO running `"docker" "inspect" "eb2d7eadfc1a46db9825fcee8f34ce0c2b293628c90a6e197989f941b625d3a7"`
Dec 19 08:14:33.378 INFO running `"docker" "rm" "-f" "eb2d7eadfc1a46db9825fcee8f34ce0c2b293628c90a6e197989f941b625d3a7"`
Dec 19 08:14:33.652 INFO [stdout] eb2d7eadfc1a46db9825fcee8f34ce0c2b293628c90a6e197989f941b625d3a7