Dec 18 06:01:21.500 INFO checking Parfyonator/merkle_tree against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 06:01:21.500 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/Parfyonator/merkle_tree:/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 06:01:21.787 INFO [stdout] 6484f39c3936f7c62dd043db4715c727607cd34c6110ebe12c157e83c2352c6b
Dec 18 06:01:21.790 INFO running `"docker" "start" "-a" "6484f39c3936f7c62dd043db4715c727607cd34c6110ebe12c157e83c2352c6b"`
Dec 18 06:01:22.462 INFO [stderr]     Checking merkle_tree v0.1.0 (/opt/crater/workdir)
Dec 18 06:01:22.747 INFO [stderr] warning: method is never used: `add_child`
Dec 18 06:01:22.747 INFO [stderr]   --> src/merkle_tree.rs:60:5
Dec 18 06:01:22.747 INFO [stderr]    |
Dec 18 06:01:22.747 INFO [stderr] 60 |     fn add_child(&mut self, new_val: String) -> bool {
Dec 18 06:01:22.747 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:01:22.747 INFO [stderr]    |
Dec 18 06:01:22.747 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 06:01:22.747 INFO [stderr] 
Dec 18 06:01:22.747 INFO [stderr] warning: method is never used: `has_children`
Dec 18 06:01:22.747 INFO [stderr]   --> src/merkle_tree.rs:74:5
Dec 18 06:01:22.747 INFO [stderr]    |
Dec 18 06:01:22.747 INFO [stderr] 74 |     fn has_children(&self) -> bool {
Dec 18 06:01:22.747 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:01:22.747 INFO [stderr] 
Dec 18 06:01:22.752 INFO [stderr] warning: method is never used: `add_child`
Dec 18 06:01:22.752 INFO [stderr]   --> src/merkle_tree.rs:60:5
Dec 18 06:01:22.752 INFO [stderr]    |
Dec 18 06:01:22.752 INFO [stderr] 60 |     fn add_child(&mut self, new_val: String) -> bool {
Dec 18 06:01:22.752 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:01:22.752 INFO [stderr]    |
Dec 18 06:01:22.752 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 06:01:22.752 INFO [stderr] 
Dec 18 06:01:22.752 INFO [stderr] warning: method is never used: `has_children`
Dec 18 06:01:22.752 INFO [stderr]   --> src/merkle_tree.rs:74:5
Dec 18 06:01:22.752 INFO [stderr]    |
Dec 18 06:01:22.752 INFO [stderr] 74 |     fn has_children(&self) -> bool {
Dec 18 06:01:22.752 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:01:22.752 INFO [stderr] 
Dec 18 06:01:22.776 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.39s
Dec 18 06:01:23.010 INFO running `"docker" "inspect" "6484f39c3936f7c62dd043db4715c727607cd34c6110ebe12c157e83c2352c6b"`
Dec 18 06:01:23.081 INFO running `"docker" "rm" "-f" "6484f39c3936f7c62dd043db4715c727607cd34c6110ebe12c157e83c2352c6b"`
Dec 18 06:01:23.191 INFO [stdout] 6484f39c3936f7c62dd043db4715c727607cd34c6110ebe12c157e83c2352c6b