Sep 05 22:20:00.983 INFO checking superslice-0.1.0 against master#1c2e17f4e3a2070a7f703f51e29c1c388ef703b6 for pr-53854
Sep 05 22:20:00.983 INFO running: cargo +1c2e17f4e3a2070a7f703f51e29c1c388ef703b6-alt check --frozen --all --all-targets
Sep 05 22:20:00.983 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-4/pr-53854/master#1c2e17f4e3a2070a7f703f51e29c1c388ef703b6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53854/worker-4/master#1c2e17f4e3a2070a7f703f51e29c1c388ef703b6:/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=1000" "-e" "CMD=cargo +1c2e17f4e3a2070a7f703f51e29c1c388ef703b6-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 05 22:20:01.141 INFO blam! b00574f7cede073b4b8d48eff49a2475bf89ce9a2503a8dc0e418f8c85f835ae
Sep 05 22:20:01.141 INFO running `"docker" "start" "-a" "b00574f7cede073b4b8d48eff49a2475bf89ce9a2503a8dc0e418f8c85f835ae"`
Sep 05 22:20:01.715 INFO kablam! usermod: no changes
Sep 05 22:20:01.747 INFO kablam!     Checking superslice v0.1.0 (file:///source)
Sep 05 22:20:02.189 INFO kablam! warning: unused import: `superslice::Ext`
Sep 05 22:20:02.189 INFO kablam!   --> benches/bench.rs:23:5
Sep 05 22:20:02.189 INFO kablam!    |
Sep 05 22:20:02.189 INFO kablam! 23 | use superslice::Ext;
Sep 05 22:20:02.189 INFO kablam!    |     ^^^^^^^^^^^^^^^
Sep 05 22:20:02.189 INFO kablam!    |
Sep 05 22:20:02.189 INFO kablam!    = note: #[warn(unused_imports)] on by default
Sep 05 22:20:02.189 INFO kablam! 
Sep 05 22:20:02.290 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.56s
Sep 05 22:20:02.294 INFO kablam! su: No module specific data is present
Sep 05 22:20:02.766 INFO running `"docker" "rm" "-f" "b00574f7cede073b4b8d48eff49a2475bf89ce9a2503a8dc0e418f8c85f835ae"`
Sep 05 22:20:02.850 INFO blam! b00574f7cede073b4b8d48eff49a2475bf89ce9a2503a8dc0e418f8c85f835ae