Sep 04 17:40:05.274 INFO checking hamt-rs-0.3.0 against master#2687112ea6a8701cbf36e6dd4d77d64694cf93d8 for pr-53913
Sep 04 17:40:05.274 INFO running: cargo +2687112ea6a8701cbf36e6dd4d77d64694cf93d8-alt check --frozen --all --all-targets
Sep 04 17:40:05.274 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-53913/master#2687112ea6a8701cbf36e6dd4d77d64694cf93d8:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53913/worker-0/master#2687112ea6a8701cbf36e6dd4d77d64694cf93d8:/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 +2687112ea6a8701cbf36e6dd4d77d64694cf93d8-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 04 17:40:05.494 INFO blam! c3f4cd3e118045664bb700377f16643b9ffb53f96778f1a40631c94958e86780
Sep 04 17:40:05.496 INFO running `"docker" "start" "-a" "c3f4cd3e118045664bb700377f16643b9ffb53f96778f1a40631c94958e86780"`
Sep 04 17:40:06.388 INFO kablam!     Checking hamt-rs v0.3.0 (file:///source)
Sep 04 17:40:09.728 INFO kablam! warning: unused return value of `std::clone::Clone::clone` which must be used
Sep 04 17:40:09.728 INFO kablam!    --> benches/benches.rs:165:9
Sep 04 17:40:09.728 INFO kablam!     |
Sep 04 17:40:09.728 INFO kablam! 165 |         map.clone();
Sep 04 17:40:09.729 INFO kablam!     |         ^^^^^^^^^^^^
Sep 04 17:40:09.729 INFO kablam!     |
Sep 04 17:40:09.729 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Sep 04 17:40:09.729 INFO kablam!     = note: cloning is often expensive and is not expected to have side effects
Sep 04 17:40:09.729 INFO kablam! 
Sep 04 17:40:09.750 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 3.39s
Sep 04 17:40:09.755 INFO kablam! su: No module specific data is present
Sep 04 17:40:10.195 INFO running `"docker" "rm" "-f" "c3f4cd3e118045664bb700377f16643b9ffb53f96778f1a40631c94958e86780"`
Sep 04 17:40:10.275 INFO blam! c3f4cd3e118045664bb700377f16643b9ffb53f96778f1a40631c94958e86780