Sep 21 07:05:38.985 INFO checking merkle_tree-0.1.0 against master#f7f4c500b46603386e940f116b469c7adc043a6d for pr-54394
Sep 21 07:05:38.985 INFO running: cargo +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets
Sep 21 07:05:38.985 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-54394/master#f7f4c500b46603386e940f116b469c7adc043a6d:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-3/master#f7f4c500b46603386e940f116b469c7adc043a6d:/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 +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 21 07:05:39.155 INFO blam! 4f180faa20fddc85324e0c2203cf1109183939287dd69a8437ebdb77df4c219e
Sep 21 07:05:39.157 INFO running `"docker" "start" "-a" "4f180faa20fddc85324e0c2203cf1109183939287dd69a8437ebdb77df4c219e"`
Sep 21 07:05:40.300 INFO kablam! usermod: no changes
Sep 21 07:05:40.425 INFO kablam!     Checking rayon v0.7.1
Sep 21 07:05:42.382 INFO kablam!     Checking merkle_tree v0.1.0 (/source)
Sep 21 07:05:45.769 INFO kablam! warning: unused import: `self::crypto::sha2::Sha256`
Sep 21 07:05:45.769 INFO kablam!   --> tests/bench_append.rs:13:9
Sep 21 07:05:45.769 INFO kablam!    |
Sep 21 07:05:45.769 INFO kablam! 13 |     use self::crypto::sha2::Sha256;
Sep 21 07:05:45.769 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 21 07:05:45.769 INFO kablam!    |
Sep 21 07:05:45.782 INFO kablam!    = note: #[warn(unused_imports)] on by default
Sep 21 07:05:45.782 INFO kablam! 
Sep 21 07:05:45.782 INFO kablam! warning: unused import: `self::crypto::digest::Digest`
Sep 21 07:05:45.782 INFO kablam!   --> tests/bench_append.rs:14:9
Sep 21 07:05:45.782 INFO kablam!    |
Sep 21 07:05:45.782 INFO kablam! 14 |     use self::crypto::digest::Digest;
Sep 21 07:05:45.782 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 21 07:05:45.782 INFO kablam! 
Sep 21 07:05:46.129 INFO kablam! warning: unused variable: `a`
Sep 21 07:05:46.129 INFO kablam!    --> tests/bench_build_tree.rs:518:30
Sep 21 07:05:46.129 INFO kablam!     |
Sep 21 07:05:46.129 INFO kablam! 518 |             (0..n).fold((), |a, b| {
Sep 21 07:05:46.129 INFO kablam!     |                              ^ help: consider using `_a` instead
Sep 21 07:05:46.129 INFO kablam!     |
Sep 21 07:05:46.129 INFO kablam!     = note: #[warn(unused_variables)] on by default
Sep 21 07:05:46.129 INFO kablam! 
Sep 21 07:05:46.129 INFO kablam! warning: unused variable: `b`
Sep 21 07:05:46.129 INFO kablam!    --> tests/bench_build_tree.rs:518:33
Sep 21 07:05:46.129 INFO kablam!     |
Sep 21 07:05:46.129 INFO kablam! 518 |             (0..n).fold((), |a, b| {
Sep 21 07:05:46.129 INFO kablam!     |                                 ^ help: consider using `_b` instead
Sep 21 07:05:46.129 INFO kablam! 
Sep 21 07:05:46.241 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 5.93s
Sep 21 07:05:46.266 INFO kablam! su: No module specific data is present
Sep 21 07:05:47.176 INFO running `"docker" "rm" "-f" "4f180faa20fddc85324e0c2203cf1109183939287dd69a8437ebdb77df4c219e"`
Sep 21 07:05:47.285 INFO blam! 4f180faa20fddc85324e0c2203cf1109183939287dd69a8437ebdb77df4c219e