Oct 13 12:08:01.851 INFO checking merkle_tree-0.1.0 against master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f for pr-54977
Oct 13 12:08:01.853 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-6/master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-6/pr-54977/master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f:/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 +5af0bb83044c3fb43d59ad5f49ee5ae1a293901f-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 12:08:02.316 INFO blam! 33f980f77f68a7709aa94850f98538f7e4138879685264c561951ebc6f7cd46e
Oct 13 12:08:02.325 INFO running `"docker" "start" "-a" "33f980f77f68a7709aa94850f98538f7e4138879685264c561951ebc6f7cd46e"`
Oct 13 12:08:03.436 INFO kablam! usermod: no changes
Oct 13 12:08:03.588 INFO kablam!     Checking merkle_tree v0.1.0 (/source)
Oct 13 12:08:10.772 INFO kablam! warning: unused import: `self::crypto::sha2::Sha256`
Oct 13 12:08:10.772 INFO kablam!   --> tests/bench_append.rs:13:9
Oct 13 12:08:10.772 INFO kablam!    |
Oct 13 12:08:10.772 INFO kablam! 13 |     use self::crypto::sha2::Sha256;
Oct 13 12:08:10.772 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 13 12:08:10.772 INFO kablam!    |
Oct 13 12:08:10.772 INFO kablam!    = note: #[warn(unused_imports)] on by default
Oct 13 12:08:10.772 INFO kablam! 
Oct 13 12:08:10.772 INFO kablam! warning: unused import: `self::crypto::digest::Digest`
Oct 13 12:08:10.772 INFO kablam!   --> tests/bench_append.rs:14:9
Oct 13 12:08:10.772 INFO kablam!    |
Oct 13 12:08:10.772 INFO kablam! 14 |     use self::crypto::digest::Digest;
Oct 13 12:08:10.772 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 13 12:08:10.772 INFO kablam! 
Oct 13 12:08:10.916 INFO kablam! warning: unused variable: `a`
Oct 13 12:08:10.916 INFO kablam!    --> tests/bench_build_tree.rs:518:30
Oct 13 12:08:10.916 INFO kablam!     |
Oct 13 12:08:10.916 INFO kablam! 518 |             (0..n).fold((), |a, b| {
Oct 13 12:08:10.916 INFO kablam!     |                              ^ help: consider using `_a` instead
Oct 13 12:08:10.916 INFO kablam!     |
Oct 13 12:08:10.916 INFO kablam!     = note: #[warn(unused_variables)] on by default
Oct 13 12:08:10.916 INFO kablam! 
Oct 13 12:08:10.916 INFO kablam! warning: unused variable: `b`
Oct 13 12:08:10.916 INFO kablam!    --> tests/bench_build_tree.rs:518:33
Oct 13 12:08:10.916 INFO kablam!     |
Oct 13 12:08:10.916 INFO kablam! 518 |             (0..n).fold((), |a, b| {
Oct 13 12:08:10.916 INFO kablam!     |                                 ^ help: consider using `_b` instead
Oct 13 12:08:10.917 INFO kablam! 
Oct 13 12:08:11.003 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 7.54s
Oct 13 12:08:11.016 INFO kablam! su: No module specific data is present
Oct 13 12:08:11.382 INFO running `"docker" "rm" "-f" "33f980f77f68a7709aa94850f98538f7e4138879685264c561951ebc6f7cd46e"`
Oct 13 12:08:11.488 INFO blam! 33f980f77f68a7709aa94850f98538f7e4138879685264c561951ebc6f7cd46e