Dec 18 14:02:48.751 INFO checking merkle_tree-0.1.0 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 14:02:48.751 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/reg/merkle_tree/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 14:02:48.979 INFO [stdout] 8bf42015ff34232274443293c77263eb32a63bed5ed7472a89512fee12e1f5bc
Dec 18 14:02:48.982 INFO running `"docker" "start" "-a" "8bf42015ff34232274443293c77263eb32a63bed5ed7472a89512fee12e1f5bc"`
Dec 18 14:02:49.970 INFO [stderr]     Checking merkle_tree v0.1.0 (/opt/crater/workdir)
Dec 18 14:02:52.508 INFO [stderr] warning: unused import: `self::crypto::sha2::Sha256`
Dec 18 14:02:52.508 INFO [stderr]   --> tests/bench_append.rs:13:9
Dec 18 14:02:52.508 INFO [stderr]    |
Dec 18 14:02:52.508 INFO [stderr] 13 |     use self::crypto::sha2::Sha256;
Dec 18 14:02:52.508 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 14:02:52.508 INFO [stderr]    |
Dec 18 14:02:52.508 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 18 14:02:52.508 INFO [stderr] 
Dec 18 14:02:52.508 INFO [stderr] warning: unused import: `self::crypto::digest::Digest`
Dec 18 14:02:52.508 INFO [stderr]   --> tests/bench_append.rs:14:9
Dec 18 14:02:52.508 INFO [stderr]    |
Dec 18 14:02:52.508 INFO [stderr] 14 |     use self::crypto::digest::Digest;
Dec 18 14:02:52.508 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 14:02:52.508 INFO [stderr] 
Dec 18 14:02:52.816 INFO [stderr] warning: unused variable: `a`
Dec 18 14:02:52.816 INFO [stderr]    --> tests/bench_build_tree.rs:518:30
Dec 18 14:02:52.816 INFO [stderr]     |
Dec 18 14:02:52.816 INFO [stderr] 518 |             (0..n).fold((), |a, b| {
Dec 18 14:02:52.816 INFO [stderr]     |                              ^ help: consider using `_a` instead
Dec 18 14:02:52.816 INFO [stderr]     |
Dec 18 14:02:52.816 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 18 14:02:52.816 INFO [stderr] 
Dec 18 14:02:52.816 INFO [stderr] warning: unused variable: `b`
Dec 18 14:02:52.816 INFO [stderr]    --> tests/bench_build_tree.rs:518:33
Dec 18 14:02:52.816 INFO [stderr]     |
Dec 18 14:02:52.816 INFO [stderr] 518 |             (0..n).fold((), |a, b| {
Dec 18 14:02:52.816 INFO [stderr]     |                                 ^ help: consider using `_b` instead
Dec 18 14:02:52.816 INFO [stderr] 
Dec 18 14:02:52.936 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.08s
Dec 18 14:02:53.726 INFO running `"docker" "inspect" "8bf42015ff34232274443293c77263eb32a63bed5ed7472a89512fee12e1f5bc"`
Dec 18 14:02:53.930 INFO running `"docker" "rm" "-f" "8bf42015ff34232274443293c77263eb32a63bed5ed7472a89512fee12e1f5bc"`
Dec 18 14:02:54.216 INFO [stdout] 8bf42015ff34232274443293c77263eb32a63bed5ed7472a89512fee12e1f5bc