Sep 01 17:50:43.558 INFO checking hamt-rs-0.3.0 against try#aa245a5862056b681d2ccdb178f58891108cd3a6 for pr-53831
Sep 01 17:50:43.558 INFO running: cargo +aa245a5862056b681d2ccdb178f58891108cd3a6-alt check --frozen --all --all-targets
Sep 01 17:50:43.558 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53831/try#aa245a5862056b681d2ccdb178f58891108cd3a6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53831/worker-1/try#aa245a5862056b681d2ccdb178f58891108cd3a6:/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 +aa245a5862056b681d2ccdb178f58891108cd3a6-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 01 17:50:43.798 INFO blam! 4122c6b4823509be2221a97ecd6bfdebe7f084a6c38527e1f9e2985e2372303b
Sep 01 17:50:43.800 INFO running `"docker" "start" "-a" "4122c6b4823509be2221a97ecd6bfdebe7f084a6c38527e1f9e2985e2372303b"`
Sep 01 17:50:44.692 INFO kablam!     Checking hamt-rs v0.3.0 (file:///source)
Sep 01 17:50:48.683 INFO kablam! warning: unused return value of `std::clone::Clone::clone` which must be used
Sep 01 17:50:48.683 INFO kablam!    --> benches/benches.rs:165:9
Sep 01 17:50:48.683 INFO kablam!     |
Sep 01 17:50:48.683 INFO kablam! 165 |         map.clone();
Sep 01 17:50:48.683 INFO kablam!     |         ^^^^^^^^^^^^
Sep 01 17:50:48.683 INFO kablam!     |
Sep 01 17:50:48.683 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Sep 01 17:50:48.683 INFO kablam!     = note: cloning is often expensive and is not expected to have side effects
Sep 01 17:50:48.683 INFO kablam! 
Sep 01 17:50:48.737 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 4.06s
Sep 01 17:50:48.741 INFO kablam! su: No module specific data is present
Sep 01 17:50:49.371 INFO running `"docker" "rm" "-f" "4122c6b4823509be2221a97ecd6bfdebe7f084a6c38527e1f9e2985e2372303b"`
Sep 01 17:50:49.496 INFO blam! 4122c6b4823509be2221a97ecd6bfdebe7f084a6c38527e1f9e2985e2372303b