Dec 04 11:57:30.715 INFO checking raiker/persistent-rope against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 11:57:30.716 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-6/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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 04 11:57:31.174 INFO [stdout] dee0be8a9f32788bc19ed7c34d6c8c4155c3f90e97504747872757e7a8dc9eb2
Dec 04 11:57:31.177 INFO running `"docker" "start" "-a" "dee0be8a9f32788bc19ed7c34d6c8c4155c3f90e97504747872757e7a8dc9eb2"`
Dec 04 11:57:32.795 INFO [stderr] usermod: no changes
Dec 04 11:57:32.879 INFO [stderr]     Checking persistent-rope v0.1.0 (/source)
Dec 04 11:57:33.499 INFO [stderr] warning: unused variable: `parent`
Dec 04 11:57:33.499 INFO [stderr]    --> src/main.rs:141:69
Dec 04 11:57:33.499 INFO [stderr]     |
Dec 04 11:57:33.499 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 04 11:57:33.499 INFO [stderr]     |                                                                        ^^^^^^ help: consider using `_parent` instead
Dec 04 11:57:33.499 INFO [stderr]     |
Dec 04 11:57:33.499 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 04 11:57:33.499 INFO [stderr] 
Dec 04 11:57:33.527 INFO [stderr] warning: struct is never constructed: `RcSliceableString`
Dec 04 11:57:33.527 INFO [stderr]  --> src/rcstr.rs:3:1
Dec 04 11:57:33.527 INFO [stderr]   |
Dec 04 11:57:33.527 INFO [stderr] 3 | pub struct RcSliceableString {
Dec 04 11:57:33.527 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 11:57:33.527 INFO [stderr]   |
Dec 04 11:57:33.527 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 04 11:57:33.527 INFO [stderr] 
Dec 04 11:57:33.527 INFO [stderr] warning: method is never used: `new`
Dec 04 11:57:33.527 INFO [stderr]   --> src/rcstr.rs:10:2
Dec 04 11:57:33.527 INFO [stderr]    |
Dec 04 11:57:33.527 INFO [stderr] 10 |     pub fn new(s: String) -> RcSliceableString {
Dec 04 11:57:33.527 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 11:57:33.527 INFO [stderr] 
Dec 04 11:57:33.527 INFO [stderr] warning: method is never used: `slice`
Dec 04 11:57:33.527 INFO [stderr]   --> src/rcstr.rs:19:2
Dec 04 11:57:33.527 INFO [stderr]    |
Dec 04 11:57:33.527 INFO [stderr] 19 |     pub fn slice(&self, start: usize, len: usize) -> RcSliceableString {
Dec 04 11:57:33.527 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 11:57:33.527 INFO [stderr] 
Dec 04 11:57:33.527 INFO [stderr] warning: method is never used: `as_str`
Dec 04 11:57:33.527 INFO [stderr]   --> src/rcstr.rs:34:2
Dec 04 11:57:33.527 INFO [stderr]    |
Dec 04 11:57:33.527 INFO [stderr] 34 |     pub fn as_str(&self) -> &str {
Dec 04 11:57:33.527 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 11:57:33.527 INFO [stderr] 
Dec 04 11:57:33.871 INFO [stderr] warning: unused variable: `parent`
Dec 04 11:57:33.871 INFO [stderr]    --> src/main.rs:141:69
Dec 04 11:57:33.871 INFO [stderr]     |
Dec 04 11:57:33.871 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 04 11:57:33.871 INFO [stderr]     |                                                                        ^^^^^^ help: consider using `_parent` instead
Dec 04 11:57:33.871 INFO [stderr]     |
Dec 04 11:57:33.871 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 04 11:57:33.871 INFO [stderr] 
Dec 04 11:57:34.123 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.29s
Dec 04 11:57:34.123 INFO [stderr] su: No module specific data is present
Dec 04 11:57:34.977 INFO running `"docker" "inspect" "dee0be8a9f32788bc19ed7c34d6c8c4155c3f90e97504747872757e7a8dc9eb2"`
Dec 04 11:57:35.315 INFO running `"docker" "rm" "-f" "dee0be8a9f32788bc19ed7c34d6c8c4155c3f90e97504747872757e7a8dc9eb2"`
Dec 04 11:57:35.607 INFO [stdout] dee0be8a9f32788bc19ed7c34d6c8c4155c3f90e97504747872757e7a8dc9eb2