Aug 11 08:40:23.541 INFO checking message_verifier-1.1.0 against master#f6d43ed84207c7e58f363f46e5a438ff40f2b311 for libc-1
Aug 11 08:40:23.541 INFO running: cargo +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets
Aug 11 08:40:23.541 INFO creating container for: cargo +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets
Aug 11 08:40:23.541 INFO running `"docker" "create" "-v" "/tmp/crater.Jl4VU8YXlbZW:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/libc-1/worker-6/master#f6d43ed84207c7e58f363f46e5a438ff40f2b311:/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" "-v" "/home/ec2-user/crater/./work/local/cargo-home/git:/cargo-home/git:rw,Z" "-e" "USER_ID=500" "-e" "CMD=cargo +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "crater"`
Aug 11 08:40:23.756 INFO blam! 8fe420feb68166ae850549ef4c5b82767164716f618d0895724f6fb3bf6b27c8
Aug 11 08:40:23.758 INFO running `"docker" "start" "-a" "8fe420feb68166ae850549ef4c5b82767164716f618d0895724f6fb3bf6b27c8"`
Aug 11 08:40:24.556 INFO kablam!     Checking message_verifier v1.1.0 (file:///source)
Aug 11 08:40:25.381 INFO kablam! warning: unused import: `std::str`
Aug 11 08:40:25.381 INFO kablam!    --> src/lib.rs:409:9
Aug 11 08:40:25.381 INFO kablam!     |
Aug 11 08:40:25.381 INFO kablam! 409 |     use std::str;
Aug 11 08:40:25.381 INFO kablam!     |         ^^^^^^^^
Aug 11 08:40:25.381 INFO kablam!     |
Aug 11 08:40:25.381 INFO kablam!     = note: #[warn(unused_imports)] on by default
Aug 11 08:40:25.381 INFO kablam! 
Aug 11 08:40:27.784 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 3.27s
Aug 11 08:40:27.790 INFO kablam! su: No module specific data is present
Aug 11 08:40:28.291 INFO running `"docker" "rm" "-f" "8fe420feb68166ae850549ef4c5b82767164716f618d0895724f6fb3bf6b27c8"`
Aug 11 08:40:28.495 INFO blam! 8fe420feb68166ae850549ef4c5b82767164716f618d0895724f6fb3bf6b27c8