Sep 04 04:54:04.778 INFO checking rust-mpfr-0.1.7 against master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c for pr-53893
Sep 04 04:54:04.778 INFO running: cargo +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets
Sep 04 04:54:04.778 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53893/master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53893/worker-1/master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c:/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=500" "-e" "CMD=cargo +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 04 04:54:04.950 INFO blam! fba07c59f48bee1b5ff5b65ef3bf23bc6fd5596a79adf8e05bbcf774f7de247b
Sep 04 04:54:04.951 INFO running `"docker" "start" "-a" "fba07c59f48bee1b5ff5b65ef3bf23bc6fd5596a79adf8e05bbcf774f7de247b"`
Sep 04 04:54:05.584 INFO kablam!     Checking rust-mpfr v0.1.7 (file:///source)
Sep 04 04:54:06.470 INFO kablam! warning: unused arithmetic operation which must be used
Sep 04 04:54:06.470 INFO kablam!   --> src/test.rs:42:5
Sep 04 04:54:06.470 INFO kablam!    |
Sep 04 04:54:06.470 INFO kablam! 42 |     x / y;
Sep 04 04:54:06.470 INFO kablam!    |     ^^^^^
Sep 04 04:54:06.470 INFO kablam!    |
Sep 04 04:54:06.470 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Sep 04 04:54:06.470 INFO kablam! 
Sep 04 04:54:06.493 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.92s
Sep 04 04:54:06.496 INFO kablam! su: No module specific data is present
Sep 04 04:54:06.957 INFO running `"docker" "rm" "-f" "fba07c59f48bee1b5ff5b65ef3bf23bc6fd5596a79adf8e05bbcf774f7de247b"`
Sep 04 04:54:07.069 INFO blam! fba07c59f48bee1b5ff5b65ef3bf23bc6fd5596a79adf8e05bbcf774f7de247b