Aug 11 03:22:35.522 INFO checking rust-mpfr-0.1.7 against master#f6d43ed84207c7e58f363f46e5a438ff40f2b311 for libc-1
Aug 11 03:22:35.522 INFO running: cargo +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets
Aug 11 03:22:35.522 INFO creating container for: cargo +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets
Aug 11 03:22:35.523 INFO running `"docker" "create" "-v" "/tmp/crater.NYTEtk1Ifydh:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/libc-1/worker-5/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 03:22:35.696 INFO blam! d6b51425fda0945e08c4bfa7cff899308f871943a91ced35736420c2d699aec0
Aug 11 03:22:35.697 INFO running `"docker" "start" "-a" "d6b51425fda0945e08c4bfa7cff899308f871943a91ced35736420c2d699aec0"`
Aug 11 03:22:36.874 INFO kablam!     Checking rust-mpfr v0.1.7 (file:///source)
Aug 11 03:22:38.093 INFO kablam! warning: unused arithmetic operation which must be used
Aug 11 03:22:38.093 INFO kablam!   --> src/test.rs:42:5
Aug 11 03:22:38.093 INFO kablam!    |
Aug 11 03:22:38.093 INFO kablam! 42 |     x / y;
Aug 11 03:22:38.093 INFO kablam!    |     ^^^^^
Aug 11 03:22:38.093 INFO kablam!    |
Aug 11 03:22:38.094 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Aug 11 03:22:38.094 INFO kablam! 
Aug 11 03:22:38.169 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.33s
Aug 11 03:22:38.172 INFO kablam! su: No module specific data is present
Aug 11 03:22:38.773 INFO running `"docker" "rm" "-f" "d6b51425fda0945e08c4bfa7cff899308f871943a91ced35736420c2d699aec0"`
Aug 11 03:22:38.931 INFO blam! d6b51425fda0945e08c4bfa7cff899308f871943a91ced35736420c2d699aec0