Dec 05 08:23:56.133 INFO checking ref-cast-impl-0.2.4 against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 05 08:23:56.163 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-2/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 05 08:23:56.402 INFO [stdout] 6f29cfb5e0c32606fa39835e81d21f9b3dcd3d30a07e783fc448d57c71d721b7
Dec 05 08:23:56.404 INFO running `"docker" "start" "-a" "6f29cfb5e0c32606fa39835e81d21f9b3dcd3d30a07e783fc448d57c71d721b7"`
Dec 05 08:23:56.775 INFO [stderr] usermod: no changes
Dec 05 08:23:56.826 INFO [stderr]     Checking proc-macro2 v0.4.24
Dec 05 08:23:57.924 INFO [stderr]     Checking quote v0.6.10
Dec 05 08:23:58.539 INFO [stderr]     Checking syn v0.15.22
Dec 05 08:24:01.483 INFO [stderr]     Checking ref-cast-impl v0.2.4 (/source)
Dec 05 08:24:02.442 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.65s
Dec 05 08:24:02.445 INFO [stderr] su: No module specific data is present
Dec 05 08:24:02.842 INFO running `"docker" "inspect" "6f29cfb5e0c32606fa39835e81d21f9b3dcd3d30a07e783fc448d57c71d721b7"`
Dec 05 08:24:02.985 INFO running `"docker" "rm" "-f" "6f29cfb5e0c32606fa39835e81d21f9b3dcd3d30a07e783fc448d57c71d721b7"`
Dec 05 08:24:03.123 INFO [stdout] 6f29cfb5e0c32606fa39835e81d21f9b3dcd3d30a07e783fc448d57c71d721b7