Sep 10 14:41:09.830 INFO checking message_verifier-1.1.0 against master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1 for pr-54090
Sep 10 14:41:09.830 INFO running: cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets
Sep 10 14:41:09.830 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-54090/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-3/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/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 +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 14:41:10.021 INFO blam! 0469d3a9226d2aa492636f7ee3cfd1657e917e17f0e7ccb6fd3d91d9cdb9ac7f
Sep 10 14:41:10.026 INFO running `"docker" "start" "-a" "0469d3a9226d2aa492636f7ee3cfd1657e917e17f0e7ccb6fd3d91d9cdb9ac7f"`
Sep 10 14:41:10.779 INFO kablam! usermod: no changes
Sep 10 14:41:10.854 INFO kablam!     Checking message_verifier v1.1.0 (file:///source)
Sep 10 14:41:11.398 INFO kablam! warning: unused import: `std::str`
Sep 10 14:41:11.398 INFO kablam!    --> src/lib.rs:409:9
Sep 10 14:41:11.398 INFO kablam!     |
Sep 10 14:41:11.398 INFO kablam! 409 |     use std::str;
Sep 10 14:41:11.398 INFO kablam!     |         ^^^^^^^^
Sep 10 14:41:11.398 INFO kablam!     |
Sep 10 14:41:11.398 INFO kablam!     = note: #[warn(unused_imports)] on by default
Sep 10 14:41:11.398 INFO kablam! 
Sep 10 14:41:12.069 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.27s
Sep 10 14:41:12.072 INFO kablam! su: No module specific data is present
Sep 10 14:41:12.611 INFO running `"docker" "rm" "-f" "0469d3a9226d2aa492636f7ee3cfd1657e917e17f0e7ccb6fd3d91d9cdb9ac7f"`
Sep 10 14:41:12.675 INFO blam! 0469d3a9226d2aa492636f7ee3cfd1657e917e17f0e7ccb6fd3d91d9cdb9ac7f