Oct 28 00:51:18.490 INFO checking backoff-0.1.2 against try#19f01b935b91481fd445b16b533d2f87661bf12e for pr-55192-2
Oct 28 00:51:18.492 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-55192-2/worker-5/try#19f01b935b91481fd445b16b533d2f87661bf12e:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-5/pr-55192-2/try#19f01b935b91481fd445b16b533d2f87661bf12e:/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 +19f01b935b91481fd445b16b533d2f87661bf12e-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"`
Oct 28 00:51:18.963 INFO blam! 314336a854ed17b55ececa58af4da7797f393d73c518a605948ada5ff224566b
Oct 28 00:51:18.971 INFO running `"docker" "start" "-a" "314336a854ed17b55ececa58af4da7797f393d73c518a605948ada5ff224566b"`
Oct 28 00:51:19.787 INFO kablam! usermod: no changes
Oct 28 00:51:19.935 INFO kablam!     Checking backoff v0.1.2 (/source)
Oct 28 00:51:21.883 INFO kablam! warning: unknown lint: `needless_pass_by_value`
Oct 28 00:51:21.884 INFO kablam!   --> examples/permanent_error.rs:10:9
Oct 28 00:51:21.884 INFO kablam!    |
Oct 28 00:51:21.885 INFO kablam! 10 | #[allow(needless_pass_by_value)]
Oct 28 00:51:21.885 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^
Oct 28 00:51:21.885 INFO kablam!    |
Oct 28 00:51:21.885 INFO kablam!    = note: #[warn(unknown_lints)] on by default
Oct 28 00:51:21.885 INFO kablam! 
Oct 28 00:51:28.107 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 8.29s
Oct 28 00:51:28.119 INFO kablam! su: No module specific data is present
Oct 28 00:51:28.713 INFO running `"docker" "rm" "-f" "314336a854ed17b55ececa58af4da7797f393d73c518a605948ada5ff224566b"`
Oct 28 00:51:29.011 INFO blam! 314336a854ed17b55ececa58af4da7797f393d73c518a605948ada5ff224566b