Sep 02 02:22:42.750 INFO checking binary-tree-0.2.0 against master#1114ab684fbad001c4e580326d8eb4d8c4e917d3 for pr-53831 Sep 02 02:22:42.750 INFO running: cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets Sep 02 02:22:42.750 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53831/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53831/worker-2/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/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 +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"` Sep 02 02:22:42.982 INFO blam! 4ab3db54a019081a02876b1e671494e9de5eba9e0ad85d44e67120c793eaf4b6 Sep 02 02:22:42.983 INFO running `"docker" "start" "-a" "4ab3db54a019081a02876b1e671494e9de5eba9e0ad85d44e67120c793eaf4b6"` Sep 02 02:22:43.677 INFO kablam! Checking binary-tree v0.2.0 (file:///source) Sep 02 02:22:46.382 INFO kablam! warning: unused return value of `std::iter::Iterator::collect` which must be used Sep 02 02:22:46.382 INFO kablam! --> benches/from_iter.rs:16:9 Sep 02 02:22:46.382 INFO kablam! | Sep 02 02:22:46.382 INFO kablam! 16 | (0..TOTAL).collect::>(); Sep 02 02:22:46.382 INFO kablam! | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Sep 02 02:22:46.382 INFO kablam! | Sep 02 02:22:46.382 INFO kablam! = note: #[warn(unused_must_use)] on by default Sep 02 02:22:46.382 INFO kablam! = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead Sep 02 02:22:46.382 INFO kablam! Sep 02 02:22:46.382 INFO kablam! warning: unused return value of `std::iter::Iterator::collect` which must be used Sep 02 02:22:46.382 INFO kablam! --> benches/from_iter.rs:23:9 Sep 02 02:22:46.382 INFO kablam! | Sep 02 02:22:46.382 INFO kablam! 23 | (0..TOTAL).collect::>(); Sep 02 02:22:46.382 INFO kablam! | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Sep 02 02:22:46.382 INFO kablam! | Sep 02 02:22:46.382 INFO kablam! = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead Sep 02 02:22:46.382 INFO kablam! Sep 02 02:22:46.382 INFO kablam! warning: unused return value of `std::iter::Iterator::collect` which must be used Sep 02 02:22:46.382 INFO kablam! --> benches/from_iter.rs:30:9 Sep 02 02:22:46.382 INFO kablam! | Sep 02 02:22:46.382 INFO kablam! 30 | (0..TOTAL).collect::>(); Sep 02 02:22:46.383 INFO kablam! | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Sep 02 02:22:46.383 INFO kablam! | Sep 02 02:22:46.383 INFO kablam! = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead Sep 02 02:22:46.383 INFO kablam! Sep 02 02:22:46.672 INFO kablam! Finished dev [unoptimized + debuginfo] target(s) in 3.05s Sep 02 02:22:46.678 INFO kablam! su: No module specific data is present Sep 02 02:22:47.182 INFO running `"docker" "rm" "-f" "4ab3db54a019081a02876b1e671494e9de5eba9e0ad85d44e67120c793eaf4b6"` Sep 02 02:22:47.270 INFO blam! 4ab3db54a019081a02876b1e671494e9de5eba9e0ad85d44e67120c793eaf4b6