Sep 01 09:48:17.168 INFO checking binary-tree-0.2.0 against master#d0d81b7fc1421859ba0218e8a437af29ae3b0967 for pr-53578
Sep 01 09:48:17.168 INFO running: cargo +d0d81b7fc1421859ba0218e8a437af29ae3b0967-alt check --frozen --all --all-targets
Sep 01 09:48:17.168 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-53578/master#d0d81b7fc1421859ba0218e8a437af29ae3b0967:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578/worker-0/master#d0d81b7fc1421859ba0218e8a437af29ae3b0967:/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 +d0d81b7fc1421859ba0218e8a437af29ae3b0967-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 01 09:48:17.333 INFO blam! 78e0cdc85246f4af7aaa650923b07c5867176d989a5ef07fd17598f0c478239e
Sep 01 09:48:17.335 INFO running `"docker" "start" "-a" "78e0cdc85246f4af7aaa650923b07c5867176d989a5ef07fd17598f0c478239e"`
Sep 01 09:48:18.058 INFO kablam!     Checking binary-tree v0.2.0 (file:///source)
Sep 01 09:48:20.943 INFO kablam! warning: unused return value of `std::iter::Iterator::collect` which must be used
Sep 01 09:48:20.943 INFO kablam!   --> benches/from_iter.rs:16:9
Sep 01 09:48:20.943 INFO kablam!    |
Sep 01 09:48:20.943 INFO kablam! 16 |         (0..TOTAL).collect::<CountTree<_>>();
Sep 01 09:48:20.943 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 01 09:48:20.943 INFO kablam!    |
Sep 01 09:48:20.943 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Sep 01 09:48:20.943 INFO kablam!    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Sep 01 09:48:20.943 INFO kablam! 
Sep 01 09:48:20.943 INFO kablam! warning: unused return value of `std::iter::Iterator::collect` which must be used
Sep 01 09:48:20.943 INFO kablam!   --> benches/from_iter.rs:23:9
Sep 01 09:48:20.943 INFO kablam!    |
Sep 01 09:48:20.943 INFO kablam! 23 |         (0..TOTAL).collect::<LinkedList<_>>();
Sep 01 09:48:20.943 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 01 09:48:20.943 INFO kablam!    |
Sep 01 09:48:20.944 INFO kablam!    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Sep 01 09:48:20.944 INFO kablam! 
Sep 01 09:48:20.944 INFO kablam! warning: unused return value of `std::iter::Iterator::collect` which must be used
Sep 01 09:48:20.944 INFO kablam!   --> benches/from_iter.rs:30:9
Sep 01 09:48:20.944 INFO kablam!    |
Sep 01 09:48:20.944 INFO kablam! 30 |         (0..TOTAL).collect::<Vec<_>>();
Sep 01 09:48:20.944 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 01 09:48:20.944 INFO kablam!    |
Sep 01 09:48:20.944 INFO kablam!    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Sep 01 09:48:20.944 INFO kablam! 
Sep 01 09:48:21.232 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 3.22s
Sep 01 09:48:21.238 INFO kablam! su: No module specific data is present
Sep 01 09:48:21.661 INFO running `"docker" "rm" "-f" "78e0cdc85246f4af7aaa650923b07c5867176d989a5ef07fd17598f0c478239e"`
Sep 01 09:48:21.768 INFO blam! 78e0cdc85246f4af7aaa650923b07c5867176d989a5ef07fd17598f0c478239e