Dec 12 00:58:23.497 INFO checking Parfyonator/merkle_tree against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 00:58:23.497 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-7/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 12 00:58:23.700 INFO [stdout] b86a1f775c403bdb52e13bc40e15b410e5eb2dcd53b3f1d9d640e306f677ef32
Dec 12 00:58:23.703 INFO running `"docker" "start" "-a" "b86a1f775c403bdb52e13bc40e15b410e5eb2dcd53b3f1d9d640e306f677ef32"`
Dec 12 00:58:24.069 INFO [stderr] usermod: no changes
Dec 12 00:58:24.167 INFO [stderr]    Compiling rust-crypto v0.2.36
Dec 12 00:58:24.169 INFO [stderr]     Checking hyper v0.10.5
Dec 12 00:58:30.968 INFO [stderr]     Checking merkle_tree v0.1.0 (/source)
Dec 12 00:58:31.860 INFO [stderr] warning: method is never used: `add_child`
Dec 12 00:58:31.860 INFO [stderr]   --> src/merkle_tree.rs:60:5
Dec 12 00:58:31.860 INFO [stderr]    |
Dec 12 00:58:31.860 INFO [stderr] 60 |     fn add_child(&mut self, new_val: String) -> bool {
Dec 12 00:58:31.860 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 00:58:31.860 INFO [stderr]    |
Dec 12 00:58:31.860 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 12 00:58:31.860 INFO [stderr] 
Dec 12 00:58:31.860 INFO [stderr] warning: method is never used: `has_children`
Dec 12 00:58:31.860 INFO [stderr]   --> src/merkle_tree.rs:74:5
Dec 12 00:58:31.860 INFO [stderr]    |
Dec 12 00:58:31.860 INFO [stderr] 74 |     fn has_children(&self) -> bool {
Dec 12 00:58:31.860 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 00:58:31.860 INFO [stderr] 
Dec 12 00:58:31.922 INFO [stderr] warning: method is never used: `add_child`
Dec 12 00:58:31.922 INFO [stderr]   --> src/merkle_tree.rs:60:5
Dec 12 00:58:31.922 INFO [stderr]    |
Dec 12 00:58:31.922 INFO [stderr] 60 |     fn add_child(&mut self, new_val: String) -> bool {
Dec 12 00:58:31.922 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 00:58:31.922 INFO [stderr]    |
Dec 12 00:58:31.922 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 12 00:58:31.922 INFO [stderr] 
Dec 12 00:58:31.922 INFO [stderr] warning: method is never used: `has_children`
Dec 12 00:58:31.922 INFO [stderr]   --> src/merkle_tree.rs:74:5
Dec 12 00:58:31.922 INFO [stderr]    |
Dec 12 00:58:31.922 INFO [stderr] 74 |     fn has_children(&self) -> bool {
Dec 12 00:58:31.922 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 00:58:31.922 INFO [stderr] 
Dec 12 00:58:31.952 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.86s
Dec 12 00:58:31.959 INFO [stderr] su: No module specific data is present
Dec 12 00:58:32.734 INFO running `"docker" "inspect" "b86a1f775c403bdb52e13bc40e15b410e5eb2dcd53b3f1d9d640e306f677ef32"`
Dec 12 00:58:33.100 INFO running `"docker" "rm" "-f" "b86a1f775c403bdb52e13bc40e15b410e5eb2dcd53b3f1d9d640e306f677ef32"`
Dec 12 00:58:33.470 INFO [stdout] b86a1f775c403bdb52e13bc40e15b410e5eb2dcd53b3f1d9d640e306f677ef32