Dec 17 17:19:11.574 INFO checking raiker/persistent-rope against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 17:19:11.574 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/raiker/persistent-rope:/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 17 17:19:11.811 INFO [stdout] 9279b0da57bba81871fb0c474e7a5a5667836031b7a545867ca5be62e35b2b87
Dec 17 17:19:11.816 INFO running `"docker" "start" "-a" "9279b0da57bba81871fb0c474e7a5a5667836031b7a545867ca5be62e35b2b87"`
Dec 17 17:19:13.567 INFO [stderr]     Checking persistent-rope v0.1.0 (/opt/crater/workdir)
Dec 17 17:19:13.920 INFO [stderr] warning: unused variable: `parent`
Dec 17 17:19:13.921 INFO [stderr]    --> src/main.rs:141:69
Dec 17 17:19:13.921 INFO [stderr]     |
Dec 17 17:19:13.921 INFO [stderr] 141 |     fn rec_insert(key: K, val: V, current: &Rc<Option<TreeNode<K,V>>>, parent: Option<&Rc<Option<TreeNode<K,V>>>>) -> InsertionResultRecursion<K,V>{
Dec 17 17:19:13.921 INFO [stderr]     |                                                                        ^^^^^^ help: consider using `_parent` instead
Dec 17 17:19:13.921 INFO [stderr]     |
Dec 17 17:19:13.921 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 17 17:19:13.921 INFO [stderr] 
Dec 17 17:19:13.960 INFO [stderr] warning: struct is never constructed: `RcSliceableString`
Dec 17 17:19:13.960 INFO [stderr]  --> src/rcstr.rs:3:1
Dec 17 17:19:13.960 INFO [stderr]   |
Dec 17 17:19:13.960 INFO [stderr] 3 | pub struct RcSliceableString {
Dec 17 17:19:13.960 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 17:19:13.960 INFO [stderr]   |
Dec 17 17:19:13.960 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 17 17:19:13.960 INFO [stderr] 
Dec 17 17:19:13.960 INFO [stderr] warning: method is never used: `new`
Dec 17 17:19:13.960 INFO [stderr]   --> src/rcstr.rs:10:2
Dec 17 17:19:13.960 INFO [stderr]    |
Dec 17 17:19:13.960 INFO [stderr] 10 |     pub fn new(s: String) -> RcSliceableString {
Dec 17 17:19:13.960 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 17:19:13.961 INFO [stderr] 
Dec 17 17:19:13.961 INFO [stderr] warning: method is never used: `slice`
Dec 17 17:19:13.961 INFO [stderr]   --> src/rcstr.rs:19:2
Dec 17 17:19:13.961 INFO [stderr]    |
Dec 17 17:19:13.961 INFO [stderr] 19 |     pub fn slice(&self, start: usize, len: usize) -> RcSliceableString {
Dec 17 17:19:13.961 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 17:19:13.961 INFO [stderr] 
Dec 17 17:19:13.961 INFO [stderr] warning: method is never used: `as_str`
Dec 17 17:19:13.961 INFO [stderr]   --> src/rcstr.rs:34:2
Dec 17 17:19:13.961 INFO [stderr]    |
Dec 17 17:19:13.961 INFO [stderr] 34 |     pub fn as_str(&self) -> &str {
Dec 17 17:19:13.961 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 17:19:13.961 INFO [stderr] 
Dec 17 17:19:14.441 INFO [stderr] warning: unused variable: `parent`
Dec 17 17:19:14.441 INFO [stderr]    --> src/main.rs:141:69
Dec 17 17:19:14.441 INFO [stderr]     |
Dec 17 17:19:14.441 INFO [stderr] 141 |     fn rec_insert(key: K, val: V, current: &Rc<Option<TreeNode<K,V>>>, parent: Option<&Rc<Option<TreeNode<K,V>>>>) -> InsertionResultRecursion<K,V>{
Dec 17 17:19:14.441 INFO [stderr]     |                                                                        ^^^^^^ help: consider using `_parent` instead
Dec 17 17:19:14.441 INFO [stderr]     |
Dec 17 17:19:14.441 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 17 17:19:14.441 INFO [stderr] 
Dec 17 17:19:14.651 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.10s
Dec 17 17:19:15.102 INFO running `"docker" "inspect" "9279b0da57bba81871fb0c474e7a5a5667836031b7a545867ca5be62e35b2b87"`
Dec 17 17:19:15.346 INFO running `"docker" "rm" "-f" "9279b0da57bba81871fb0c474e7a5a5667836031b7a545867ca5be62e35b2b87"`
Dec 17 17:19:15.555 INFO [stdout] 9279b0da57bba81871fb0c474e7a5a5667836031b7a545867ca5be62e35b2b87