Sep 21 13:00:15.334 INFO checking binary-tree-0.2.0 against try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6 for pr-54394
Sep 21 13:00:15.334 INFO running: cargo +f1a3f05968ed2a674e09b6efa4ad9df90816e2b6-alt check --frozen --all --all-targets
Sep 21 13:00:15.334 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-54394/try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-2/try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6:/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 +f1a3f05968ed2a674e09b6efa4ad9df90816e2b6-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 21 13:00:15.452 INFO blam! 0946a2383f485adce8fb6a3346177e1fa5f7d78606ec8125f8cbf98aa2df74af
Sep 21 13:00:15.454 INFO running `"docker" "start" "-a" "0946a2383f485adce8fb6a3346177e1fa5f7d78606ec8125f8cbf98aa2df74af"`
Sep 21 13:00:16.547 INFO kablam! usermod: no changes
Sep 21 13:00:16.663 INFO kablam!     Checking binary-tree v0.2.0 (/source)
Sep 21 13:00:18.018 INFO kablam! warning: unused return value of `std::iter::Iterator::collect` which must be used
Sep 21 13:00:18.018 INFO kablam!   --> benches/from_iter.rs:16:9
Sep 21 13:00:18.018 INFO kablam!    |
Sep 21 13:00:18.018 INFO kablam! 16 |         (0..TOTAL).collect::<CountTree<_>>();
Sep 21 13:00:18.018 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 21 13:00:18.018 INFO kablam!    |
Sep 21 13:00:18.018 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Sep 21 13:00:18.018 INFO kablam!    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Sep 21 13:00:18.018 INFO kablam! 
Sep 21 13:00:18.018 INFO kablam! warning: unused return value of `std::iter::Iterator::collect` which must be used
Sep 21 13:00:18.018 INFO kablam!   --> benches/from_iter.rs:23:9
Sep 21 13:00:18.018 INFO kablam!    |
Sep 21 13:00:18.018 INFO kablam! 23 |         (0..TOTAL).collect::<LinkedList<_>>();
Sep 21 13:00:18.018 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 21 13:00:18.018 INFO kablam!    |
Sep 21 13:00:18.018 INFO kablam!    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Sep 21 13:00:18.018 INFO kablam! 
Sep 21 13:00:18.018 INFO kablam! warning: unused return value of `std::iter::Iterator::collect` which must be used
Sep 21 13:00:18.018 INFO kablam!   --> benches/from_iter.rs:30:9
Sep 21 13:00:18.018 INFO kablam!    |
Sep 21 13:00:18.018 INFO kablam! 30 |         (0..TOTAL).collect::<Vec<_>>();
Sep 21 13:00:18.018 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 21 13:00:18.022 INFO kablam!    |
Sep 21 13:00:18.022 INFO kablam!    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Sep 21 13:00:18.022 INFO kablam! 
Sep 21 13:00:18.633 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 2.05s
Sep 21 13:00:18.638 INFO kablam! su: No module specific data is present
Sep 21 13:00:19.129 INFO running `"docker" "rm" "-f" "0946a2383f485adce8fb6a3346177e1fa5f7d78606ec8125f8cbf98aa2df74af"`
Sep 21 13:00:19.197 INFO blam! 0946a2383f485adce8fb6a3346177e1fa5f7d78606ec8125f8cbf98aa2df74af