Nov 05 02:27:55.986 INFO checking backoff-0.1.2 against try#e740b9aa0b624fa39feb39613e76d15bdf57e594 for pr-55655
Nov 05 02:27:55.988 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55655/worker-0/try#e740b9aa0b624fa39feb39613e76d15bdf57e594:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-55655/try#e740b9aa0b624fa39feb39613e76d15bdf57e594:/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 +e740b9aa0b624fa39feb39613e76d15bdf57e594-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"`
Nov 05 02:27:56.543 INFO blam! 91e6f5db039144f368b6b9c930afc39c15414d6d08911a83b12c28039e79405d
Nov 05 02:27:56.551 INFO running `"docker" "start" "-a" "91e6f5db039144f368b6b9c930afc39c15414d6d08911a83b12c28039e79405d"`
Nov 05 02:27:57.858 INFO kablam! usermod: no changes
Nov 05 02:27:58.078 INFO kablam!     Checking backoff v0.1.2 (/source)
Nov 05 02:27:59.883 INFO kablam! warning: unknown lint: `needless_pass_by_value`
Nov 05 02:27:59.883 INFO kablam!   --> examples/permanent_error.rs:10:9
Nov 05 02:27:59.884 INFO kablam!    |
Nov 05 02:27:59.884 INFO kablam! 10 | #[allow(needless_pass_by_value)]
Nov 05 02:27:59.884 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^
Nov 05 02:27:59.903 INFO kablam!    |
Nov 05 02:27:59.903 INFO kablam!    = note: #[warn(unknown_lints)] on by default
Nov 05 02:27:59.903 INFO kablam! 
Nov 05 02:28:05.929 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 8.03s
Nov 05 02:28:05.947 INFO kablam! su: No module specific data is present
Nov 05 02:28:06.634 INFO running `"docker" "rm" "-f" "91e6f5db039144f368b6b9c930afc39c15414d6d08911a83b12c28039e79405d"`
Nov 05 02:28:06.891 INFO blam! 91e6f5db039144f368b6b9c930afc39c15414d6d08911a83b12c28039e79405d