Dec 04 11:57:35.116 INFO checking raiker/persistent-rope against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 11:57:35.116 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-4/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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 11:57:35.648 INFO [stdout] 535488e0521085584eb7dfad93099ba6cf918d9f8aabac034a79a150f96b11ef
Dec 04 11:57:35.650 INFO running `"docker" "start" "-a" "535488e0521085584eb7dfad93099ba6cf918d9f8aabac034a79a150f96b11ef"`
Dec 04 11:57:37.362 INFO [stderr] usermod: no changes
Dec 04 11:57:37.431 INFO [stderr]     Checking persistent-rope v0.1.0 (/source)
Dec 04 11:57:38.076 INFO [stderr] warning: unused variable: `parent`
Dec 04 11:57:38.076 INFO [stderr]    --> src/main.rs:141:69
Dec 04 11:57:38.076 INFO [stderr]     |
Dec 04 11:57:38.076 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 11:57:38.076 INFO [stderr]     |                                                                        ^^^^^^ help: consider using `_parent` instead
Dec 04 11:57:38.076 INFO [stderr]     |
Dec 04 11:57:38.076 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 04 11:57:38.076 INFO [stderr] 
Dec 04 11:57:38.089 INFO [stderr] warning: struct is never constructed: `RcSliceableString`
Dec 04 11:57:38.089 INFO [stderr]  --> src/rcstr.rs:3:1
Dec 04 11:57:38.089 INFO [stderr]   |
Dec 04 11:57:38.089 INFO [stderr] 3 | pub struct RcSliceableString {
Dec 04 11:57:38.089 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 11:57:38.089 INFO [stderr]   |
Dec 04 11:57:38.089 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 04 11:57:38.089 INFO [stderr] 
Dec 04 11:57:38.089 INFO [stderr] warning: method is never used: `new`
Dec 04 11:57:38.089 INFO [stderr]   --> src/rcstr.rs:10:2
Dec 04 11:57:38.089 INFO [stderr]    |
Dec 04 11:57:38.089 INFO [stderr] 10 |     pub fn new(s: String) -> RcSliceableString {
Dec 04 11:57:38.089 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 11:57:38.089 INFO [stderr] 
Dec 04 11:57:38.089 INFO [stderr] warning: method is never used: `slice`
Dec 04 11:57:38.089 INFO [stderr]   --> src/rcstr.rs:19:2
Dec 04 11:57:38.089 INFO [stderr]    |
Dec 04 11:57:38.089 INFO [stderr] 19 |     pub fn slice(&self, start: usize, len: usize) -> RcSliceableString {
Dec 04 11:57:38.089 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 11:57:38.089 INFO [stderr] 
Dec 04 11:57:38.089 INFO [stderr] warning: method is never used: `as_str`
Dec 04 11:57:38.089 INFO [stderr]   --> src/rcstr.rs:34:2
Dec 04 11:57:38.089 INFO [stderr]    |
Dec 04 11:57:38.089 INFO [stderr] 34 |     pub fn as_str(&self) -> &str {
Dec 04 11:57:38.089 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 11:57:38.089 INFO [stderr] 
Dec 04 11:57:38.691 INFO [stderr] warning: unused variable: `parent`
Dec 04 11:57:38.691 INFO [stderr]    --> src/main.rs:141:69
Dec 04 11:57:38.691 INFO [stderr]     |
Dec 04 11:57:38.691 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 11:57:38.691 INFO [stderr]     |                                                                        ^^^^^^ help: consider using `_parent` instead
Dec 04 11:57:38.691 INFO [stderr]     |
Dec 04 11:57:38.691 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 04 11:57:38.691 INFO [stderr] 
Dec 04 11:57:38.903 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.51s
Dec 04 11:57:38.903 INFO [stderr] su: No module specific data is present
Dec 04 11:57:39.455 INFO running `"docker" "inspect" "535488e0521085584eb7dfad93099ba6cf918d9f8aabac034a79a150f96b11ef"`
Dec 04 11:57:39.845 INFO running `"docker" "rm" "-f" "535488e0521085584eb7dfad93099ba6cf918d9f8aabac034a79a150f96b11ef"`
Dec 04 11:57:40.209 INFO [stdout] 535488e0521085584eb7dfad93099ba6cf918d9f8aabac034a79a150f96b11ef