Sep 19 21:07:53.464 INFO checking rust-mpfr-0.1.7 against try#135b4cd023a753409d01e43b0f23d22a899feeeb for pr-54352
Sep 19 21:07:53.464 INFO running: cargo +135b4cd023a753409d01e43b0f23d22a899feeeb-alt check --frozen --all --all-targets
Sep 19 21:07:53.464 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-54352/try#135b4cd023a753409d01e43b0f23d22a899feeeb:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54352/worker-1/try#135b4cd023a753409d01e43b0f23d22a899feeeb:/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 +135b4cd023a753409d01e43b0f23d22a899feeeb-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 19 21:07:53.599 INFO blam! 8c533b36da2c8d8318ea8a7775d1ccf49f17a3015d8f011310f276f530169037
Sep 19 21:07:53.601 INFO running `"docker" "start" "-a" "8c533b36da2c8d8318ea8a7775d1ccf49f17a3015d8f011310f276f530169037"`
Sep 19 21:07:54.557 INFO kablam! usermod: no changes
Sep 19 21:07:54.592 INFO kablam!     Checking rust-mpfr v0.1.7 (/source)
Sep 19 21:07:55.119 INFO kablam! warning: unused arithmetic operation which must be used
Sep 19 21:07:55.119 INFO kablam!   --> src/test.rs:42:5
Sep 19 21:07:55.119 INFO kablam!    |
Sep 19 21:07:55.119 INFO kablam! 42 |     x / y;
Sep 19 21:07:55.119 INFO kablam!    |     ^^^^^
Sep 19 21:07:55.119 INFO kablam!    |
Sep 19 21:07:55.119 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Sep 19 21:07:55.119 INFO kablam! 
Sep 19 21:07:55.150 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.57s
Sep 19 21:07:55.152 INFO kablam! su: No module specific data is present
Sep 19 21:07:55.833 INFO running `"docker" "rm" "-f" "8c533b36da2c8d8318ea8a7775d1ccf49f17a3015d8f011310f276f530169037"`
Sep 19 21:07:55.944 INFO blam! 8c533b36da2c8d8318ea8a7775d1ccf49f17a3015d8f011310f276f530169037