Sep 19 21:15:04.223 INFO checking pairlock-0.1.0 against master#ff6422d7a392acfc8af28994d65af2bbaecea4f6 for pr-54346
Sep 19 21:15:04.223 INFO running: cargo +ff6422d7a392acfc8af28994d65af2bbaecea4f6-alt check --frozen --all --all-targets
Sep 19 21:15:04.223 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-4/pr-54346/master#ff6422d7a392acfc8af28994d65af2bbaecea4f6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54346/worker-4/master#ff6422d7a392acfc8af28994d65af2bbaecea4f6:/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 +ff6422d7a392acfc8af28994d65af2bbaecea4f6-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 19 21:15:04.413 INFO blam! d35040f858d08ca7000b1c5920b55cbf75b5dfa97c989aded529d2dcc5ddad5c
Sep 19 21:15:04.415 INFO running `"docker" "start" "-a" "d35040f858d08ca7000b1c5920b55cbf75b5dfa97c989aded529d2dcc5ddad5c"`
Sep 19 21:15:05.472 INFO kablam! usermod: no changes
Sep 19 21:15:05.546 INFO kablam!     Checking pairlock v0.1.0 (/source)
Sep 19 21:15:06.363 INFO kablam! warning: unused import: `black_box`
Sep 19 21:15:06.363 INFO kablam!  --> benches/race_detection.rs:3:21
Sep 19 21:15:06.363 INFO kablam!   |
Sep 19 21:15:06.363 INFO kablam! 3 | use test::{Bencher, black_box};
Sep 19 21:15:06.363 INFO kablam!   |                     ^^^^^^^^^
Sep 19 21:15:06.363 INFO kablam!   |
Sep 19 21:15:06.363 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 19 21:15:06.363 INFO kablam! 
Sep 19 21:15:06.764 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.26s
Sep 19 21:15:06.765 INFO kablam! su: No module specific data is present
Sep 19 21:15:07.301 INFO running `"docker" "rm" "-f" "d35040f858d08ca7000b1c5920b55cbf75b5dfa97c989aded529d2dcc5ddad5c"`
Sep 19 21:15:07.458 INFO blam! d35040f858d08ca7000b1c5920b55cbf75b5dfa97c989aded529d2dcc5ddad5c