Dec 18 06:01:21.496 INFO checking Parfyonator/merkle_tree against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 06:01:21.497 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-5/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 06:01:21.734 INFO [stdout] 3822a0acf1236f9a79a4c292333ae45905c61c876e3012b0913bae0b676cb0ae
Dec 18 06:01:21.737 INFO running `"docker" "start" "-a" "3822a0acf1236f9a79a4c292333ae45905c61c876e3012b0913bae0b676cb0ae"`
Dec 18 06:01:22.328 INFO [stderr]     Checking hyper v0.10.5
Dec 18 06:01:25.392 INFO [stderr]     Checking merkle_tree v0.1.0 (/opt/crater/workdir)
Dec 18 06:01:25.876 INFO [stderr] warning: method is never used: `add_child`
Dec 18 06:01:25.876 INFO [stderr]   --> src/merkle_tree.rs:60:5
Dec 18 06:01:25.876 INFO [stderr]    |
Dec 18 06:01:25.876 INFO [stderr] 60 |     fn add_child(&mut self, new_val: String) -> bool {
Dec 18 06:01:25.876 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:01:25.876 INFO [stderr]    |
Dec 18 06:01:25.876 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 06:01:25.876 INFO [stderr] 
Dec 18 06:01:25.876 INFO [stderr] warning: method is never used: `has_children`
Dec 18 06:01:25.876 INFO [stderr]   --> src/merkle_tree.rs:74:5
Dec 18 06:01:25.876 INFO [stderr]    |
Dec 18 06:01:25.876 INFO [stderr] 74 |     fn has_children(&self) -> bool {
Dec 18 06:01:25.876 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:01:25.876 INFO [stderr] 
Dec 18 06:01:25.942 INFO [stderr] warning: method is never used: `add_child`
Dec 18 06:01:25.942 INFO [stderr]   --> src/merkle_tree.rs:60:5
Dec 18 06:01:25.942 INFO [stderr]    |
Dec 18 06:01:25.942 INFO [stderr] 60 |     fn add_child(&mut self, new_val: String) -> bool {
Dec 18 06:01:25.942 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:01:25.942 INFO [stderr]    |
Dec 18 06:01:25.942 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 06:01:25.942 INFO [stderr] 
Dec 18 06:01:25.942 INFO [stderr] warning: method is never used: `has_children`
Dec 18 06:01:25.942 INFO [stderr]   --> src/merkle_tree.rs:74:5
Dec 18 06:01:25.942 INFO [stderr]    |
Dec 18 06:01:25.942 INFO [stderr] 74 |     fn has_children(&self) -> bool {
Dec 18 06:01:25.942 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:01:25.942 INFO [stderr] 
Dec 18 06:01:25.977 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.72s
Dec 18 06:01:27.192 INFO running `"docker" "inspect" "3822a0acf1236f9a79a4c292333ae45905c61c876e3012b0913bae0b676cb0ae"`
Dec 18 06:01:27.508 INFO running `"docker" "rm" "-f" "3822a0acf1236f9a79a4c292333ae45905c61c876e3012b0913bae0b676cb0ae"`
Dec 18 06:01:27.796 INFO [stdout] 3822a0acf1236f9a79a4c292333ae45905c61c876e3012b0913bae0b676cb0ae