Sep 17 21:24:23.359 INFO checking message_verifier-1.1.0 against master#cb6d2dfa8923902b0992a1522dc4a45a9d3ba690 for pr-54033
Sep 17 21:24:23.359 INFO running: cargo +cb6d2dfa8923902b0992a1522dc4a45a9d3ba690-alt check --frozen --all --all-targets
Sep 17 21:24:23.359 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-54033/master#cb6d2dfa8923902b0992a1522dc4a45a9d3ba690:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54033/worker-1/master#cb6d2dfa8923902b0992a1522dc4a45a9d3ba690:/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 +cb6d2dfa8923902b0992a1522dc4a45a9d3ba690-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 17 21:24:23.522 INFO blam! c3917133fd7d3bcf7ccc23c6527c65ddc580544840bc6bff1febbf3d51fd63e9
Sep 17 21:24:23.526 INFO running `"docker" "start" "-a" "c3917133fd7d3bcf7ccc23c6527c65ddc580544840bc6bff1febbf3d51fd63e9"`
Sep 17 21:24:24.589 INFO kablam! usermod: no changes
Sep 17 21:24:24.653 INFO kablam!     Checking message_verifier v1.1.0 (/source)
Sep 17 21:24:25.183 INFO kablam! warning: unused import: `std::str`
Sep 17 21:24:25.183 INFO kablam!    --> src/lib.rs:409:9
Sep 17 21:24:25.183 INFO kablam!     |
Sep 17 21:24:25.183 INFO kablam! 409 |     use std::str;
Sep 17 21:24:25.183 INFO kablam!     |         ^^^^^^^^
Sep 17 21:24:25.183 INFO kablam!     |
Sep 17 21:24:25.183 INFO kablam!     = note: #[warn(unused_imports)] on by default
Sep 17 21:24:25.183 INFO kablam! 
Sep 17 21:24:26.023 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.42s
Sep 17 21:24:26.027 INFO kablam! su: No module specific data is present
Sep 17 21:24:26.497 INFO running `"docker" "rm" "-f" "c3917133fd7d3bcf7ccc23c6527c65ddc580544840bc6bff1febbf3d51fd63e9"`
Sep 17 21:24:26.597 INFO blam! c3917133fd7d3bcf7ccc23c6527c65ddc580544840bc6bff1febbf3d51fd63e9