Nov 07 06:31:04.461 INFO checking workerpool-1.1.1 against master#24e66c28980442a48d9458f1a4f9b76cc722dc8a for pr-55687
Nov 07 06:31:04.461 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55687/worker-0/master#24e66c28980442a48d9458f1a4f9b76cc722dc8a:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-55687/master#24e66c28980442a48d9458f1a4f9b76cc722dc8a:/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 +24e66c28980442a48d9458f1a4f9b76cc722dc8a-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 07 06:31:04.901 INFO blam! be898e4d6b01be081a32141cfc507d0de413a027098fd7ce0b176a73404ef565
Nov 07 06:31:04.909 INFO running `"docker" "start" "-a" "be898e4d6b01be081a32141cfc507d0de413a027098fd7ce0b176a73404ef565"`
Nov 07 06:31:05.621 INFO kablam! usermod: no changes
Nov 07 06:31:05.660 INFO kablam!     Checking workerpool v1.1.1 (/source)
Nov 07 06:31:06.829 INFO kablam! warning: unused arithmetic operation that must be used
Nov 07 06:31:06.829 INFO kablam!     --> src/lib.rs:1070:46
Nov 07 06:31:06.829 INFO kablam!      |
Nov 07 06:31:06.829 INFO kablam! 1070 |             pool.execute(Thunk::of(move || { 1 + 1; }));
Nov 07 06:31:06.829 INFO kablam!      |                                              ^^^^^
Nov 07 06:31:06.829 INFO kablam!      |
Nov 07 06:31:06.829 INFO kablam!      = note: #[warn(unused_must_use)] on by default
Nov 07 06:31:06.829 INFO kablam! 
Nov 07 06:31:06.846 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.21s
Nov 07 06:31:06.849 INFO kablam! su: No module specific data is present
Nov 07 06:31:07.130 INFO running `"docker" "rm" "-f" "be898e4d6b01be081a32141cfc507d0de413a027098fd7ce0b176a73404ef565"`
Nov 07 06:31:07.252 INFO blam! be898e4d6b01be081a32141cfc507d0de413a027098fd7ce0b176a73404ef565