Aug 30 15:03:14.042 INFO checking hamt-rs-0.3.0 against master#ede55518431154bc761f7b2438cce9078c162700 for pr-53707
Aug 30 15:03:14.042 INFO running: cargo +ede55518431154bc761f7b2438cce9078c162700-alt check --frozen --all --all-targets
Aug 30 15:03:14.043 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53707/master#ede55518431154bc761f7b2438cce9078c162700:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53707/worker-1/master#ede55518431154bc761f7b2438cce9078c162700:/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 +ede55518431154bc761f7b2438cce9078c162700-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Aug 30 15:03:14.406 INFO blam! 2f7b6b5e431012e556548cfc8176dc31ed4ed1d6e60055c576c28a3f559badd2
Aug 30 15:03:14.408 INFO running `"docker" "start" "-a" "2f7b6b5e431012e556548cfc8176dc31ed4ed1d6e60055c576c28a3f559badd2"`
Aug 30 15:03:15.649 INFO kablam!     Checking hamt-rs v0.3.0 (file:///source)
Aug 30 15:03:19.133 INFO kablam! warning: unused return value of `std::clone::Clone::clone` which must be used
Aug 30 15:03:19.133 INFO kablam!    --> benches/benches.rs:165:9
Aug 30 15:03:19.133 INFO kablam!     |
Aug 30 15:03:19.133 INFO kablam! 165 |         map.clone();
Aug 30 15:03:19.133 INFO kablam!     |         ^^^^^^^^^^^^
Aug 30 15:03:19.133 INFO kablam!     |
Aug 30 15:03:19.133 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Aug 30 15:03:19.133 INFO kablam!     = note: cloning is often expensive and is not expected to have side effects
Aug 30 15:03:19.133 INFO kablam! 
Aug 30 15:03:19.153 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 3.53s
Aug 30 15:03:19.157 INFO kablam! su: No module specific data is present
Aug 30 15:03:19.772 INFO running `"docker" "rm" "-f" "2f7b6b5e431012e556548cfc8176dc31ed4ed1d6e60055c576c28a3f559badd2"`
Aug 30 15:03:19.888 INFO blam! 2f7b6b5e431012e556548cfc8176dc31ed4ed1d6e60055c576c28a3f559badd2