Oct 12 15:19:18.198 INFO checking raiker/persistent-rope against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 12 15:19:18.198 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-5/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-5/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/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 +4021bd0b3c5815b087d6db10ce461e7e4854ade7-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"`
Oct 12 15:19:18.464 INFO blam! 57d0cba9454f112c10120b9c2a232db6e66192078765cfa80cceaa9848f52500
Oct 12 15:19:18.466 INFO running `"docker" "start" "-a" "57d0cba9454f112c10120b9c2a232db6e66192078765cfa80cceaa9848f52500"`
Oct 12 15:19:18.892 INFO kablam! usermod: no changes
Oct 12 15:19:18.926 INFO kablam!     Checking persistent-rope v0.1.0 (/source)
Oct 12 15:19:19.352 INFO kablam! warning: unused variable: `parent`
Oct 12 15:19:19.352 INFO kablam!    --> src/main.rs:141:69
Oct 12 15:19:19.352 INFO kablam!     |
Oct 12 15:19:19.352 INFO kablam! 141 |     fn rec_insert(key: K, val: V, current: &Rc<Option<TreeNode<K,V>>>, parent: Option<&Rc<Option<TreeNode<K,V>>>>) -> InsertionResultRecursion<K,V>{
Oct 12 15:19:19.352 INFO kablam!     |                                                                        ^^^^^^ help: consider using `_parent` instead
Oct 12 15:19:19.352 INFO kablam!     |
Oct 12 15:19:19.352 INFO kablam!     = note: #[warn(unused_variables)] on by default
Oct 12 15:19:19.352 INFO kablam! 
Oct 12 15:19:19.367 INFO kablam! warning: struct is never constructed: `RcSliceableString`
Oct 12 15:19:19.368 INFO kablam!  --> src/rcstr.rs:3:1
Oct 12 15:19:19.368 INFO kablam!   |
Oct 12 15:19:19.368 INFO kablam! 3 | pub struct RcSliceableString {
Oct 12 15:19:19.368 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 15:19:19.369 INFO kablam!   |
Oct 12 15:19:19.369 INFO kablam!   = note: #[warn(dead_code)] on by default
Oct 12 15:19:19.369 INFO kablam! 
Oct 12 15:19:19.369 INFO kablam! warning: method is never used: `new`
Oct 12 15:19:19.369 INFO kablam!   --> src/rcstr.rs:10:2
Oct 12 15:19:19.369 INFO kablam!    |
Oct 12 15:19:19.369 INFO kablam! 10 |     pub fn new(s: String) -> RcSliceableString {
Oct 12 15:19:19.372 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 15:19:19.372 INFO kablam! 
Oct 12 15:19:19.372 INFO kablam! warning: method is never used: `slice`
Oct 12 15:19:19.372 INFO kablam!   --> src/rcstr.rs:19:2
Oct 12 15:19:19.372 INFO kablam!    |
Oct 12 15:19:19.372 INFO kablam! 19 |     pub fn slice(&self, start: usize, len: usize) -> RcSliceableString {
Oct 12 15:19:19.372 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 15:19:19.372 INFO kablam! 
Oct 12 15:19:19.372 INFO kablam! warning: method is never used: `as_str`
Oct 12 15:19:19.372 INFO kablam!   --> src/rcstr.rs:34:2
Oct 12 15:19:19.372 INFO kablam!    |
Oct 12 15:19:19.372 INFO kablam! 34 |     pub fn as_str(&self) -> &str {
Oct 12 15:19:19.372 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 15:19:19.372 INFO kablam! 
Oct 12 15:19:20.048 INFO kablam! warning: unused variable: `parent`
Oct 12 15:19:20.048 INFO kablam!    --> src/main.rs:141:69
Oct 12 15:19:20.048 INFO kablam!     |
Oct 12 15:19:20.049 INFO kablam! 141 |     fn rec_insert(key: K, val: V, current: &Rc<Option<TreeNode<K,V>>>, parent: Option<&Rc<Option<TreeNode<K,V>>>>) -> InsertionResultRecursion<K,V>{
Oct 12 15:19:20.049 INFO kablam!     |                                                                        ^^^^^^ help: consider using `_parent` instead
Oct 12 15:19:20.049 INFO kablam!     |
Oct 12 15:19:20.049 INFO kablam!     = note: #[warn(unused_variables)] on by default
Oct 12 15:19:20.049 INFO kablam! 
Oct 12 15:19:20.292 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.37s
Oct 12 15:19:20.304 INFO kablam! su: No module specific data is present
Oct 12 15:19:21.567 INFO running `"docker" "rm" "-f" "57d0cba9454f112c10120b9c2a232db6e66192078765cfa80cceaa9848f52500"`
Oct 12 15:19:21.900 INFO blam! 57d0cba9454f112c10120b9c2a232db6e66192078765cfa80cceaa9848f52500