Nov 07 12:13:01.399 INFO checking message_verifier-1.1.0 against master#24e66c28980442a48d9458f1a4f9b76cc722dc8a for pr-55687
Nov 07 12:13:01.401 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55687/worker-4/master#24e66c28980442a48d9458f1a4f9b76cc722dc8a:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-55687/master#24e66c28980442a48d9458f1a4f9b76cc722dc8a:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +24e66c28980442a48d9458f1a4f9b76cc722dc8a-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 07 12:13:01.742 INFO blam! 8e6ec510a3157b4e1808a118169c89969cd5a916b6bbc82f084c688afa296ee4
Nov 07 12:13:01.747 INFO running `"docker" "start" "-a" "8e6ec510a3157b4e1808a118169c89969cd5a916b6bbc82f084c688afa296ee4"`
Nov 07 12:13:02.641 INFO kablam! usermod: no changes
Nov 07 12:13:02.792 INFO kablam!     Checking message_verifier v1.1.0 (/source)
Nov 07 12:13:04.495 INFO kablam! warning: unused import: `std::str`
Nov 07 12:13:04.496 INFO kablam!    --> src/lib.rs:409:9
Nov 07 12:13:04.497 INFO kablam!     |
Nov 07 12:13:04.497 INFO kablam! 409 |     use std::str;
Nov 07 12:13:04.498 INFO kablam!     |         ^^^^^^^^
Nov 07 12:13:04.499 INFO kablam!     |
Nov 07 12:13:04.499 INFO kablam!     = note: #[warn(unused_imports)] on by default
Nov 07 12:13:04.500 INFO kablam! 
Nov 07 12:13:08.724 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 6.04s
Nov 07 12:13:08.737 INFO kablam! su: No module specific data is present
Nov 07 12:13:09.324 INFO running `"docker" "rm" "-f" "8e6ec510a3157b4e1808a118169c89969cd5a916b6bbc82f084c688afa296ee4"`
Nov 07 12:13:09.610 INFO blam! 8e6ec510a3157b4e1808a118169c89969cd5a916b6bbc82f084c688afa296ee4