Sep 10 10:44:40.682 INFO checking rust-mpfr-0.1.7 against try#3a2610c2a16575649896925631bf8cec4f4b1961 for pr-54090
Sep 10 10:44:40.682 INFO running: cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets
Sep 10 10:44:40.682 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-54090/try#3a2610c2a16575649896925631bf8cec4f4b1961:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-1/try#3a2610c2a16575649896925631bf8cec4f4b1961:/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 +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 10:44:40.819 INFO blam! afa22bfdca32e1daf48baf4a658ad7d1f0738b59838e6b79ca0b0398d2956248
Sep 10 10:44:40.821 INFO running `"docker" "start" "-a" "afa22bfdca32e1daf48baf4a658ad7d1f0738b59838e6b79ca0b0398d2956248"`
Sep 10 10:44:41.736 INFO kablam! usermod: no changes
Sep 10 10:44:41.759 INFO kablam!     Checking rust-gmp v0.3.2
Sep 10 10:44:42.278 INFO kablam!     Checking rust-mpfr v0.1.7 (file:///source)
Sep 10 10:44:42.846 INFO kablam! warning: unused arithmetic operation which must be used
Sep 10 10:44:42.846 INFO kablam!   --> src/test.rs:42:5
Sep 10 10:44:42.846 INFO kablam!    |
Sep 10 10:44:42.846 INFO kablam! 42 |     x / y;
Sep 10 10:44:42.846 INFO kablam!    |     ^^^^^
Sep 10 10:44:42.846 INFO kablam!    |
Sep 10 10:44:42.846 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Sep 10 10:44:42.846 INFO kablam! 
Sep 10 10:44:42.877 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.12s
Sep 10 10:44:42.878 INFO kablam! su: No module specific data is present
Sep 10 10:44:43.584 INFO running `"docker" "rm" "-f" "afa22bfdca32e1daf48baf4a658ad7d1f0738b59838e6b79ca0b0398d2956248"`
Sep 10 10:44:43.647 INFO blam! afa22bfdca32e1daf48baf4a658ad7d1f0738b59838e6b79ca0b0398d2956248