Aug 30 15:03:12.681 INFO checking hamt-rs-0.3.0 against try#2d477f9981361618ac78253c28051a66b6cea125 for pr-53707
Aug 30 15:03:12.681 INFO running: cargo +2d477f9981361618ac78253c28051a66b6cea125-alt check --frozen --all --all-targets
Aug 30 15:03:12.681 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53707/try#2d477f9981361618ac78253c28051a66b6cea125:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53707/worker-2/try#2d477f9981361618ac78253c28051a66b6cea125:/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 +2d477f9981361618ac78253c28051a66b6cea125-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Aug 30 15:03:12.982 INFO blam! d08748b29ff7b0b3edcc901e6498282d477bb15f236a4d4c4c3d7630c22a1ff7
Aug 30 15:03:12.986 INFO running `"docker" "start" "-a" "d08748b29ff7b0b3edcc901e6498282d477bb15f236a4d4c4c3d7630c22a1ff7"`
Aug 30 15:03:14.251 INFO kablam!     Checking hamt-rs v0.3.0 (file:///source)
Aug 30 15:03:18.399 INFO kablam! warning: unused return value of `std::clone::Clone::clone` which must be used
Aug 30 15:03:18.399 INFO kablam!    --> benches/benches.rs:165:9
Aug 30 15:03:18.399 INFO kablam!     |
Aug 30 15:03:18.399 INFO kablam! 165 |         map.clone();
Aug 30 15:03:18.399 INFO kablam!     |         ^^^^^^^^^^^^
Aug 30 15:03:18.399 INFO kablam!     |
Aug 30 15:03:18.399 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Aug 30 15:03:18.399 INFO kablam!     = note: cloning is often expensive and is not expected to have side effects
Aug 30 15:03:18.399 INFO kablam! 
Aug 30 15:03:18.425 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 4.22s
Aug 30 15:03:18.428 INFO kablam! su: No module specific data is present
Aug 30 15:03:19.780 INFO running `"docker" "rm" "-f" "d08748b29ff7b0b3edcc901e6498282d477bb15f236a4d4c4c3d7630c22a1ff7"`
Aug 30 15:03:19.870 INFO blam! d08748b29ff7b0b3edcc901e6498282d477bb15f236a4d4c4c3d7630c22a1ff7