Dec 19 22:27:00.981 INFO checking Parfyonator/merkle_tree against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 22:27:00.981 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-5/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 22:27:01.502 INFO [stdout] 20988ed12c33a2a73ceb1b0ae0ba7e1166d0efcca26d89a4befaa244530d7a19
Dec 19 22:27:01.502 INFO running `"docker" "start" "-a" "20988ed12c33a2a73ceb1b0ae0ba7e1166d0efcca26d89a4befaa244530d7a19"`
Dec 19 22:27:02.418 INFO [stderr]    Compiling rust-crypto v0.2.36
Dec 19 22:27:02.419 INFO [stderr]     Checking hyper v0.10.5
Dec 19 22:27:08.460 INFO [stderr]     Checking merkle_tree v0.1.0 (/opt/crater/workdir)
Dec 19 22:27:09.132 INFO [stderr] warning: method is never used: `add_child`
Dec 19 22:27:09.133 INFO [stderr]   --> src/merkle_tree.rs:60:5
Dec 19 22:27:09.133 INFO [stderr]    |
Dec 19 22:27:09.133 INFO [stderr] 60 |     fn add_child(&mut self, new_val: String) -> bool {
Dec 19 22:27:09.134 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:27:09.134 INFO [stderr]    |
Dec 19 22:27:09.134 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 22:27:09.134 INFO [stderr] 
Dec 19 22:27:09.134 INFO [stderr] warning: method is never used: `has_children`
Dec 19 22:27:09.134 INFO [stderr]   --> src/merkle_tree.rs:74:5
Dec 19 22:27:09.134 INFO [stderr]    |
Dec 19 22:27:09.134 INFO [stderr] 74 |     fn has_children(&self) -> bool {
Dec 19 22:27:09.134 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:27:09.134 INFO [stderr] 
Dec 19 22:27:09.220 INFO [stderr] warning: method is never used: `add_child`
Dec 19 22:27:09.221 INFO [stderr]   --> src/merkle_tree.rs:60:5
Dec 19 22:27:09.221 INFO [stderr]    |
Dec 19 22:27:09.221 INFO [stderr] 60 |     fn add_child(&mut self, new_val: String) -> bool {
Dec 19 22:27:09.222 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:27:09.222 INFO [stderr]    |
Dec 19 22:27:09.222 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 22:27:09.222 INFO [stderr] 
Dec 19 22:27:09.223 INFO [stderr] warning: method is never used: `has_children`
Dec 19 22:27:09.223 INFO [stderr]   --> src/merkle_tree.rs:74:5
Dec 19 22:27:09.223 INFO [stderr]    |
Dec 19 22:27:09.224 INFO [stderr] 74 |     fn has_children(&self) -> bool {
Dec 19 22:27:09.224 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:27:09.224 INFO [stderr] 
Dec 19 22:27:09.269 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.92s
Dec 19 22:27:10.826 INFO running `"docker" "inspect" "20988ed12c33a2a73ceb1b0ae0ba7e1166d0efcca26d89a4befaa244530d7a19"`
Dec 19 22:27:11.235 INFO running `"docker" "rm" "-f" "20988ed12c33a2a73ceb1b0ae0ba7e1166d0efcca26d89a4befaa244530d7a19"`
Dec 19 22:27:11.532 INFO [stdout] 20988ed12c33a2a73ceb1b0ae0ba7e1166d0efcca26d89a4befaa244530d7a19