Oct 13 16:20:25.124 INFO checking currency-0.4.0 against master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f for pr-54977
Oct 13 16:20:25.125 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-2/master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-2/pr-54977/master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f:/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 +5af0bb83044c3fb43d59ad5f49ee5ae1a293901f-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"`
Oct 13 16:20:25.627 INFO blam! 7065e057050ee4ec04359fb2dae519c49c29cee5adadbe3907895e397d061496
Oct 13 16:20:25.628 INFO running `"docker" "start" "-a" "7065e057050ee4ec04359fb2dae519c49c29cee5adadbe3907895e397d061496"`
Oct 13 16:20:26.448 INFO kablam! usermod: no changes
Oct 13 16:20:26.500 INFO kablam!     Checking currency v0.4.0 (/source)
Oct 13 16:20:28.814 INFO kablam! warning: unused import: `std::str::FromStr`
Oct 13 16:20:28.814 INFO kablam!    --> src/lib.rs:752:13
Oct 13 16:20:28.814 INFO kablam!     |
Oct 13 16:20:28.814 INFO kablam! 752 |         use std::str::FromStr;
Oct 13 16:20:28.814 INFO kablam!     |             ^^^^^^^^^^^^^^^^^
Oct 13 16:20:28.814 INFO kablam!     |
Oct 13 16:20:28.814 INFO kablam!     = note: #[warn(unused_imports)] on by default
Oct 13 16:20:28.814 INFO kablam! 
Oct 13 16:20:29.075 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 2.62s
Oct 13 16:20:29.079 INFO kablam! su: No module specific data is present
Oct 13 16:20:30.107 INFO running `"docker" "rm" "-f" "7065e057050ee4ec04359fb2dae519c49c29cee5adadbe3907895e397d061496"`
Oct 13 16:20:30.445 INFO blam! 7065e057050ee4ec04359fb2dae519c49c29cee5adadbe3907895e397d061496