Sep 21 07:20:34.241 INFO checking luther-0.1.0 against master#f7f4c500b46603386e940f116b469c7adc043a6d for pr-54394
Sep 21 07:20:34.241 INFO running: cargo +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets
Sep 21 07:20:34.242 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-6/pr-54394/master#f7f4c500b46603386e940f116b469c7adc043a6d:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-6/master#f7f4c500b46603386e940f116b469c7adc043a6d:/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" "-e" "USER_ID=1000" "-e" "CMD=cargo +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 21 07:20:34.448 INFO blam! 3669ce92b955674f573c0f45986cf83c89d5adbda61599312308d6644a4f30db
Sep 21 07:20:34.450 INFO running `"docker" "start" "-a" "3669ce92b955674f573c0f45986cf83c89d5adbda61599312308d6644a4f30db"`
Sep 21 07:20:36.553 INFO kablam! usermod: no changes
Sep 21 07:20:36.703 INFO kablam!     Checking assert_matches v1.3.0
Sep 21 07:20:36.704 INFO kablam!     Checking luther v0.1.0 (/source)
Sep 21 07:20:39.438 INFO kablam! warning: unused arithmetic operation which must be used
Sep 21 07:20:39.438 INFO kablam!    --> src/span.rs:132:9
Sep 21 07:20:39.438 INFO kablam!     |
Sep 21 07:20:39.438 INFO kablam! 132 |         Location::new(usize::max_value()) + 3;
Sep 21 07:20:39.438 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 21 07:20:39.438 INFO kablam!     |
Sep 21 07:20:39.438 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Sep 21 07:20:39.438 INFO kablam! 
Sep 21 07:20:39.507 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 2.91s
Sep 21 07:20:39.526 INFO kablam! su: No module specific data is present
Sep 21 07:20:41.313 INFO running `"docker" "rm" "-f" "3669ce92b955674f573c0f45986cf83c89d5adbda61599312308d6644a4f30db"`
Sep 21 07:20:41.422 INFO blam! 3669ce92b955674f573c0f45986cf83c89d5adbda61599312308d6644a4f30db