Sep 21 06:00:11.719 INFO checking pairlock-0.1.0 against master#f7f4c500b46603386e940f116b469c7adc043a6d for pr-54394
Sep 21 06:00:11.719 INFO running: cargo +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets
Sep 21 06:00:11.719 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-7/pr-54394/master#f7f4c500b46603386e940f116b469c7adc043a6d:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-7/master#f7f4c500b46603386e940f116b469c7adc043a6d:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "CMD=cargo +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 21 06:00:11.950 INFO blam! 4c458269193a614dd3f5980890c595ea1ea3526dc6572886c82f0a4e79614980
Sep 21 06:00:11.951 INFO running `"docker" "start" "-a" "4c458269193a614dd3f5980890c595ea1ea3526dc6572886c82f0a4e79614980"`
Sep 21 06:00:12.790 INFO kablam! usermod: no changes
Sep 21 06:00:12.858 INFO kablam!     Checking pairlock v0.1.0 (/source)
Sep 21 06:00:13.626 INFO kablam! warning: unused import: `black_box`
Sep 21 06:00:13.626 INFO kablam!  --> benches/race_detection.rs:3:21
Sep 21 06:00:13.626 INFO kablam!   |
Sep 21 06:00:13.626 INFO kablam! 3 | use test::{Bencher, black_box};
Sep 21 06:00:13.626 INFO kablam!   |                     ^^^^^^^^^
Sep 21 06:00:13.626 INFO kablam!   |
Sep 21 06:00:13.626 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 21 06:00:13.626 INFO kablam! 
Sep 21 06:00:13.809 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.99s
Sep 21 06:00:13.812 INFO kablam! su: No module specific data is present
Sep 21 06:00:14.434 INFO running `"docker" "rm" "-f" "4c458269193a614dd3f5980890c595ea1ea3526dc6572886c82f0a4e79614980"`
Sep 21 06:00:14.510 INFO blam! 4c458269193a614dd3f5980890c595ea1ea3526dc6572886c82f0a4e79614980