Sep 17 20:17:56.724 INFO checking pairlock-0.1.0 against try#cfeeefe83c83bceb55d60d7e2be173db7597ed50 for pr-54033
Sep 17 20:17:56.724 INFO running: cargo +cfeeefe83c83bceb55d60d7e2be173db7597ed50-alt check --frozen --all --all-targets
Sep 17 20:17:56.724 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-54033/try#cfeeefe83c83bceb55d60d7e2be173db7597ed50:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54033/worker-1/try#cfeeefe83c83bceb55d60d7e2be173db7597ed50:/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 +cfeeefe83c83bceb55d60d7e2be173db7597ed50-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 17 20:17:56.856 INFO blam! 2e74f62b2c88e54cf8ec900350306e8b18ec1fa54b9b16a7445497abb5dbe487
Sep 17 20:17:56.858 INFO running `"docker" "start" "-a" "2e74f62b2c88e54cf8ec900350306e8b18ec1fa54b9b16a7445497abb5dbe487"`
Sep 17 20:17:57.668 INFO kablam! usermod: no changes
Sep 17 20:17:57.691 INFO kablam!     Checking pairlock v0.1.0 (/source)
Sep 17 20:17:58.206 INFO kablam! warning: unused import: `black_box`
Sep 17 20:17:58.206 INFO kablam!  --> benches/race_detection.rs:3:21
Sep 17 20:17:58.206 INFO kablam!   |
Sep 17 20:17:58.207 INFO kablam! 3 | use test::{Bencher, black_box};
Sep 17 20:17:58.207 INFO kablam!   |                     ^^^^^^^^^
Sep 17 20:17:58.207 INFO kablam!   |
Sep 17 20:17:58.207 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 17 20:17:58.207 INFO kablam! 
Sep 17 20:17:58.422 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
Sep 17 20:17:58.424 INFO kablam! su: No module specific data is present
Sep 17 20:17:58.921 INFO running `"docker" "rm" "-f" "2e74f62b2c88e54cf8ec900350306e8b18ec1fa54b9b16a7445497abb5dbe487"`
Sep 17 20:17:59.102 INFO blam! 2e74f62b2c88e54cf8ec900350306e8b18ec1fa54b9b16a7445497abb5dbe487