Oct 13 17:43:22.821 INFO checking binary-tree-0.2.0 against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 13 17:43:22.822 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-7/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-7/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/source:ro,Z" "-v" "/mnt/big/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +4021bd0b3c5815b087d6db10ce461e7e4854ade7-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Oct 13 17:43:23.475 INFO blam! 28c9a2322bb879d364ce13c4bf4bab78484b7f2f69a01e4eb18bd21df3c1107c
Oct 13 17:43:23.478 INFO running `"docker" "start" "-a" "28c9a2322bb879d364ce13c4bf4bab78484b7f2f69a01e4eb18bd21df3c1107c"`
Oct 13 17:43:24.432 INFO kablam! usermod: no changes
Oct 13 17:43:24.552 INFO kablam!     Checking binary-tree v0.2.0 (/source)
Oct 13 17:43:28.836 INFO kablam! warning: unused return value of `std::iter::Iterator::collect` which must be used
Oct 13 17:43:28.836 INFO kablam!   --> benches/from_iter.rs:16:9
Oct 13 17:43:28.836 INFO kablam!    |
Oct 13 17:43:28.836 INFO kablam! 16 |         (0..TOTAL).collect::<CountTree<_>>();
Oct 13 17:43:28.836 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 13 17:43:28.836 INFO kablam!    |
Oct 13 17:43:28.836 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Oct 13 17:43:28.836 INFO kablam!    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Oct 13 17:43:28.836 INFO kablam! 
Oct 13 17:43:28.836 INFO kablam! warning: unused return value of `std::iter::Iterator::collect` which must be used
Oct 13 17:43:28.836 INFO kablam!   --> benches/from_iter.rs:23:9
Oct 13 17:43:28.836 INFO kablam!    |
Oct 13 17:43:28.836 INFO kablam! 23 |         (0..TOTAL).collect::<LinkedList<_>>();
Oct 13 17:43:28.836 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 13 17:43:28.836 INFO kablam!    |
Oct 13 17:43:28.836 INFO kablam!    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Oct 13 17:43:28.836 INFO kablam! 
Oct 13 17:43:28.836 INFO kablam! warning: unused return value of `std::iter::Iterator::collect` which must be used
Oct 13 17:43:28.836 INFO kablam!   --> benches/from_iter.rs:30:9
Oct 13 17:43:28.836 INFO kablam!    |
Oct 13 17:43:28.836 INFO kablam! 30 |         (0..TOTAL).collect::<Vec<_>>();
Oct 13 17:43:28.836 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 13 17:43:28.836 INFO kablam!    |
Oct 13 17:43:28.836 INFO kablam!    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Oct 13 17:43:28.836 INFO kablam! 
Oct 13 17:43:28.937 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 4.48s
Oct 13 17:43:28.944 INFO kablam! su: No module specific data is present
Oct 13 17:43:29.344 INFO running `"docker" "rm" "-f" "28c9a2322bb879d364ce13c4bf4bab78484b7f2f69a01e4eb18bd21df3c1107c"`
Oct 13 17:43:29.478 INFO blam! 28c9a2322bb879d364ce13c4bf4bab78484b7f2f69a01e4eb18bd21df3c1107c