Sep 06 03:52:07.884 INFO checking merkle_tree-0.1.0 against try#51ff957df5095d92d1d3d4682207ee8b7ad408a8 for pr-53854
Sep 06 03:52:07.884 INFO running: cargo +51ff957df5095d92d1d3d4682207ee8b7ad408a8-alt check --frozen --all --all-targets
Sep 06 03:52:07.884 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53854/try#51ff957df5095d92d1d3d4682207ee8b7ad408a8:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53854/worker-2/try#51ff957df5095d92d1d3d4682207ee8b7ad408a8:/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 +51ff957df5095d92d1d3d4682207ee8b7ad408a8-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 06 03:52:08.070 INFO blam! 99f1b8cf00a08af46c25c29f9f45123b6d7d832eb531911b01eb518886c64aaf
Sep 06 03:52:08.072 INFO running `"docker" "start" "-a" "99f1b8cf00a08af46c25c29f9f45123b6d7d832eb531911b01eb518886c64aaf"`
Sep 06 03:52:08.976 INFO kablam! usermod: no changes
Sep 06 03:52:09.211 INFO kablam!     Checking merkle_tree v0.1.0 (file:///source)
Sep 06 03:52:12.545 INFO kablam! warning: unused import: `self::crypto::sha2::Sha256`
Sep 06 03:52:12.545 INFO kablam!   --> tests/bench_append.rs:13:9
Sep 06 03:52:12.545 INFO kablam!    |
Sep 06 03:52:12.545 INFO kablam! 13 |     use self::crypto::sha2::Sha256;
Sep 06 03:52:12.545 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 06 03:52:12.545 INFO kablam!    |
Sep 06 03:52:12.545 INFO kablam!    = note: #[warn(unused_imports)] on by default
Sep 06 03:52:12.545 INFO kablam! 
Sep 06 03:52:12.545 INFO kablam! warning: unused import: `self::crypto::digest::Digest`
Sep 06 03:52:12.545 INFO kablam!   --> tests/bench_append.rs:14:9
Sep 06 03:52:12.545 INFO kablam!    |
Sep 06 03:52:12.545 INFO kablam! 14 |     use self::crypto::digest::Digest;
Sep 06 03:52:12.545 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 06 03:52:12.545 INFO kablam! 
Sep 06 03:52:12.994 INFO kablam! warning: unused variable: `a`
Sep 06 03:52:12.994 INFO kablam!    --> tests/bench_build_tree.rs:518:30
Sep 06 03:52:12.994 INFO kablam!     |
Sep 06 03:52:12.994 INFO kablam! 518 |             (0..n).fold((), |a, b| {
Sep 06 03:52:12.994 INFO kablam!     |                              ^ help: consider using `_a` instead
Sep 06 03:52:12.994 INFO kablam!     |
Sep 06 03:52:12.994 INFO kablam!     = note: #[warn(unused_variables)] on by default
Sep 06 03:52:12.994 INFO kablam! 
Sep 06 03:52:12.994 INFO kablam! warning: unused variable: `b`
Sep 06 03:52:12.994 INFO kablam!    --> tests/bench_build_tree.rs:518:33
Sep 06 03:52:12.994 INFO kablam!     |
Sep 06 03:52:12.994 INFO kablam! 518 |             (0..n).fold((), |a, b| {
Sep 06 03:52:12.994 INFO kablam!     |                                 ^ help: consider using `_b` instead
Sep 06 03:52:12.994 INFO kablam! 
Sep 06 03:52:13.090 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 4.08s
Sep 06 03:52:13.093 INFO kablam! su: No module specific data is present
Sep 06 03:52:13.686 INFO running `"docker" "rm" "-f" "99f1b8cf00a08af46c25c29f9f45123b6d7d832eb531911b01eb518886c64aaf"`
Sep 06 03:52:13.795 INFO blam! 99f1b8cf00a08af46c25c29f9f45123b6d7d832eb531911b01eb518886c64aaf