Sep 19 21:07:54.231 INFO checking rust-mpfr-0.1.7 against master#1e21c9a297a9fe668d62887a3a6a4add8e717b17 for pr-54352
Sep 19 21:07:54.231 INFO running: cargo +1e21c9a297a9fe668d62887a3a6a4add8e717b17-alt check --frozen --all --all-targets
Sep 19 21:07:54.231 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-54352/master#1e21c9a297a9fe668d62887a3a6a4add8e717b17:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54352/worker-0/master#1e21c9a297a9fe668d62887a3a6a4add8e717b17:/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 +1e21c9a297a9fe668d62887a3a6a4add8e717b17-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 19 21:07:54.363 INFO blam! f18267e2e48583dad35d36a364f71112d3f2bd2604e180af764942a6bccf82a6
Sep 19 21:07:54.365 INFO running `"docker" "start" "-a" "f18267e2e48583dad35d36a364f71112d3f2bd2604e180af764942a6bccf82a6"`
Sep 19 21:07:55.195 INFO kablam! usermod: no changes
Sep 19 21:07:55.221 INFO kablam!     Checking rust-mpfr v0.1.7 (/source)
Sep 19 21:07:55.690 INFO kablam! warning: unused arithmetic operation which must be used
Sep 19 21:07:55.690 INFO kablam!   --> src/test.rs:42:5
Sep 19 21:07:55.690 INFO kablam!    |
Sep 19 21:07:55.690 INFO kablam! 42 |     x / y;
Sep 19 21:07:55.690 INFO kablam!    |     ^^^^^
Sep 19 21:07:55.690 INFO kablam!    |
Sep 19 21:07:55.690 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Sep 19 21:07:55.690 INFO kablam! 
Sep 19 21:07:55.714 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.50s
Sep 19 21:07:55.716 INFO kablam! su: No module specific data is present
Sep 19 21:07:56.152 INFO running `"docker" "rm" "-f" "f18267e2e48583dad35d36a364f71112d3f2bd2604e180af764942a6bccf82a6"`
Sep 19 21:07:56.275 INFO blam! f18267e2e48583dad35d36a364f71112d3f2bd2604e180af764942a6bccf82a6