Oct 13 12:08:20.622 INFO checking merkle-generator-0.2.0 against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 13 12:08:20.623 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 12:08:20.801 INFO blam! 1e913eca60b909dd52dfe1a1dddf8e694f9ca9d81893e0e1c6702e86e4bd27bc
Oct 13 12:08:20.803 INFO running `"docker" "start" "-a" "1e913eca60b909dd52dfe1a1dddf8e694f9ca9d81893e0e1c6702e86e4bd27bc"`
Oct 13 12:08:21.220 INFO kablam! usermod: no changes
Oct 13 12:08:21.324 INFO kablam!     Checking flat-tree v1.1.0
Oct 13 12:08:22.004 INFO kablam!     Checking merkle-generator v0.2.0 (/source)
Oct 13 12:08:23.212 INFO kablam! warning: unused variable: `roots`
Oct 13 12:08:23.212 INFO kablam!    --> src/lib.rs:142:26
Oct 13 12:08:23.212 INFO kablam!     |
Oct 13 12:08:23.212 INFO kablam! 142 |     fn leaf(leaf: &Node, roots: &Vec<Node>) -> Vec<u8> {
Oct 13 12:08:23.212 INFO kablam!     |                          ^^^^^ help: consider using `_roots` instead
Oct 13 12:08:23.212 INFO kablam!     |
Oct 13 12:08:23.212 INFO kablam!     = note: #[warn(unused_variables)] on by default
Oct 13 12:08:23.212 INFO kablam! 
Oct 13 12:08:23.265 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 2.02s
Oct 13 12:08:23.269 INFO kablam! su: No module specific data is present
Oct 13 12:08:23.786 INFO running `"docker" "rm" "-f" "1e913eca60b909dd52dfe1a1dddf8e694f9ca9d81893e0e1c6702e86e4bd27bc"`
Oct 13 12:08:23.920 INFO blam! 1e913eca60b909dd52dfe1a1dddf8e694f9ca9d81893e0e1c6702e86e4bd27bc