Sep 01 18:47:53.400 INFO checking workerpool-1.1.1 against try#952c7dbfa2628309f557b367929ffc17af20b332 for pr-53851
Sep 01 18:47:53.400 INFO running: cargo +952c7dbfa2628309f557b367929ffc17af20b332-alt check --frozen --all --all-targets
Sep 01 18:47:53.400 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53851/try#952c7dbfa2628309f557b367929ffc17af20b332:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53851/worker-2/try#952c7dbfa2628309f557b367929ffc17af20b332:/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 +952c7dbfa2628309f557b367929ffc17af20b332-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 01 18:47:53.550 INFO blam! 73c44459f9d86dc9a45347637905cf8130b1be4a6dafb00c8cbf21f09b0a0cdc
Sep 01 18:47:53.552 INFO running `"docker" "start" "-a" "73c44459f9d86dc9a45347637905cf8130b1be4a6dafb00c8cbf21f09b0a0cdc"`
Sep 01 18:47:54.269 INFO kablam!     Checking workerpool v1.1.1 (file:///source)
Sep 01 18:47:55.328 INFO kablam! warning: unused arithmetic operation which must be used
Sep 01 18:47:55.328 INFO kablam!     --> src/lib.rs:1070:46
Sep 01 18:47:55.328 INFO kablam!      |
Sep 01 18:47:55.328 INFO kablam! 1070 |             pool.execute(Thunk::of(move || { 1 + 1; }));
Sep 01 18:47:55.328 INFO kablam!      |                                              ^^^^^
Sep 01 18:47:55.328 INFO kablam!      |
Sep 01 18:47:55.328 INFO kablam!      = note: #[warn(unused_must_use)] on by default
Sep 01 18:47:55.328 INFO kablam! 
Sep 01 18:47:55.359 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.10s
Sep 01 18:47:55.363 INFO kablam! su: No module specific data is present
Sep 01 18:47:55.722 INFO running `"docker" "rm" "-f" "73c44459f9d86dc9a45347637905cf8130b1be4a6dafb00c8cbf21f09b0a0cdc"`
Sep 01 18:47:55.824 INFO blam! 73c44459f9d86dc9a45347637905cf8130b1be4a6dafb00c8cbf21f09b0a0cdc