Nov 01 19:53:16.684 INFO checking message_verifier-1.1.0 against try#d7816399d50d407bbce1efe9dbadf8faaaf568fc for pr-55538
Nov 01 19:53:16.686 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55538/worker-2/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-55538/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/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 +d7816399d50d407bbce1efe9dbadf8faaaf568fc-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 01 19:53:17.092 INFO blam! 43e030a08c58bd7ecb45ff4e26072729aa6ab0dff331359354a21423f4a47396
Nov 01 19:53:17.095 INFO running `"docker" "start" "-a" "43e030a08c58bd7ecb45ff4e26072729aa6ab0dff331359354a21423f4a47396"`
Nov 01 19:53:18.032 INFO kablam! usermod: no changes
Nov 01 19:53:18.189 INFO kablam!     Checking message_verifier v1.1.0 (/source)
Nov 01 19:53:20.328 INFO kablam! warning: unused import: `std::str`
Nov 01 19:53:20.328 INFO kablam!    --> src/lib.rs:409:9
Nov 01 19:53:20.328 INFO kablam!     |
Nov 01 19:53:20.328 INFO kablam! 409 |     use std::str;
Nov 01 19:53:20.328 INFO kablam!     |         ^^^^^^^^
Nov 01 19:53:20.328 INFO kablam!     |
Nov 01 19:53:20.328 INFO kablam!     = note: #[warn(unused_imports)] on by default
Nov 01 19:53:20.328 INFO kablam! 
Nov 01 19:53:23.061 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 5.00s
Nov 01 19:53:23.072 INFO kablam! su: No module specific data is present
Nov 01 19:53:23.953 INFO running `"docker" "rm" "-f" "43e030a08c58bd7ecb45ff4e26072729aa6ab0dff331359354a21423f4a47396"`
Nov 01 19:53:24.238 INFO blam! 43e030a08c58bd7ecb45ff4e26072729aa6ab0dff331359354a21423f4a47396