Dec 05 10:29:41.373 INFO checking merkle_tree-0.1.0 against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 05 10:29:41.373 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-3/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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"`
Dec 05 10:29:41.876 INFO [stdout] 646493f1e024ca76f2eb0285316acd0da8237aecf82129a05c6633749152e924
Dec 05 10:29:41.878 INFO running `"docker" "start" "-a" "646493f1e024ca76f2eb0285316acd0da8237aecf82129a05c6633749152e924"`
Dec 05 10:29:43.139 INFO [stderr] usermod: no changes
Dec 05 10:29:43.284 INFO [stderr]     Checking hex-slice v0.1.4
Dec 05 10:29:43.315 INFO [stderr]     Checking rayon v0.7.1
Dec 05 10:29:46.094 INFO [stderr]     Checking merkle_tree v0.1.0 (/source)
Dec 05 10:29:52.187 INFO [stderr] warning: unused import: `self::crypto::sha2::Sha256`
Dec 05 10:29:52.187 INFO [stderr]   --> tests/bench_append.rs:13:9
Dec 05 10:29:52.187 INFO [stderr]    |
Dec 05 10:29:52.187 INFO [stderr] 13 |     use self::crypto::sha2::Sha256;
Dec 05 10:29:52.187 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 10:29:52.187 INFO [stderr]    |
Dec 05 10:29:52.187 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 05 10:29:52.187 INFO [stderr] 
Dec 05 10:29:52.187 INFO [stderr] warning: unused import: `self::crypto::digest::Digest`
Dec 05 10:29:52.187 INFO [stderr]   --> tests/bench_append.rs:14:9
Dec 05 10:29:52.187 INFO [stderr]    |
Dec 05 10:29:52.187 INFO [stderr] 14 |     use self::crypto::digest::Digest;
Dec 05 10:29:52.187 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 10:29:52.187 INFO [stderr] 
Dec 05 10:29:52.239 INFO [stderr] warning: unused variable: `a`
Dec 05 10:29:52.239 INFO [stderr]    --> tests/bench_build_tree.rs:518:30
Dec 05 10:29:52.239 INFO [stderr]     |
Dec 05 10:29:52.239 INFO [stderr] 518 |             (0..n).fold((), |a, b| {
Dec 05 10:29:52.239 INFO [stderr]     |                              ^ help: consider using `_a` instead
Dec 05 10:29:52.239 INFO [stderr]     |
Dec 05 10:29:52.239 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 05 10:29:52.239 INFO [stderr] 
Dec 05 10:29:52.239 INFO [stderr] warning: unused variable: `b`
Dec 05 10:29:52.239 INFO [stderr]    --> tests/bench_build_tree.rs:518:33
Dec 05 10:29:52.239 INFO [stderr]     |
Dec 05 10:29:52.239 INFO [stderr] 518 |             (0..n).fold((), |a, b| {
Dec 05 10:29:52.239 INFO [stderr]     |                                 ^ help: consider using `_b` instead
Dec 05 10:29:52.239 INFO [stderr] 
Dec 05 10:29:52.331 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.17s
Dec 05 10:29:52.344 INFO [stderr] su: No module specific data is present
Dec 05 10:29:52.929 INFO running `"docker" "inspect" "646493f1e024ca76f2eb0285316acd0da8237aecf82129a05c6633749152e924"`
Dec 05 10:29:53.128 INFO running `"docker" "rm" "-f" "646493f1e024ca76f2eb0285316acd0da8237aecf82129a05c6633749152e924"`
Dec 05 10:29:53.427 INFO [stdout] 646493f1e024ca76f2eb0285316acd0da8237aecf82129a05c6633749152e924