Dec 19 14:41:24.833 INFO checking jzw2/rust-data-structures against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 14:41:24.833 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-1/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/jzw2/rust-data-structures:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 14:41:25.157 INFO [stdout] 58540eb0e5b21d1495c6a387b90ce522fd30d4cd4ccbe43e1192051695491a8b
Dec 19 14:41:25.162 INFO running `"docker" "start" "-a" "58540eb0e5b21d1495c6a387b90ce522fd30d4cd4ccbe43e1192051695491a8b"`
Dec 19 14:41:27.084 INFO [stderr]     Checking rust-datastructures v0.1.0 (/opt/crater/workdir)
Dec 19 14:41:27.376 INFO [stderr] warning: unused variable: `key`
Dec 19 14:41:27.376 INFO [stderr]   --> src/main.rs:21:20
Dec 19 14:41:27.376 INFO [stderr]    |
Dec 19 14:41:27.376 INFO [stderr] 21 |     fn find(&self, key: usize) -> Option<&T> {
Dec 19 14:41:27.376 INFO [stderr]    |                    ^^^ help: consider using `_key` instead
Dec 19 14:41:27.376 INFO [stderr]    |
Dec 19 14:41:27.376 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 14:41:27.376 INFO [stderr] 
Dec 19 14:41:27.376 INFO [stderr] warning: unused variable: `key`
Dec 19 14:41:27.376 INFO [stderr]   --> src/main.rs:75:26
Dec 19 14:41:27.376 INFO [stderr]    |
Dec 19 14:41:27.376 INFO [stderr] 75 |     fn delete(&mut self, key: usize) {
Dec 19 14:41:27.376 INFO [stderr]    |                          ^^^ help: consider using `_key` instead
Dec 19 14:41:27.376 INFO [stderr] 
Dec 19 14:41:27.388 INFO [stderr] warning: field is never used: `data`
Dec 19 14:41:27.388 INFO [stderr]  --> src/main.rs:2:5
Dec 19 14:41:27.388 INFO [stderr]   |
Dec 19 14:41:27.388 INFO [stderr] 2 |     data: Vec<Node<T>>,
Dec 19 14:41:27.388 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 19 14:41:27.388 INFO [stderr]   |
Dec 19 14:41:27.388 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 14:41:27.388 INFO [stderr] 
Dec 19 14:41:27.388 INFO [stderr] warning: field is never used: `root`
Dec 19 14:41:27.388 INFO [stderr]  --> src/main.rs:4:5
Dec 19 14:41:27.388 INFO [stderr]   |
Dec 19 14:41:27.388 INFO [stderr] 4 |     root: Option<usize>,
Dec 19 14:41:27.388 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 19 14:41:27.389 INFO [stderr] 
Dec 19 14:41:27.389 INFO [stderr] warning: field is never used: `key`
Dec 19 14:41:27.389 INFO [stderr]  --> src/main.rs:8:5
Dec 19 14:41:27.389 INFO [stderr]   |
Dec 19 14:41:27.389 INFO [stderr] 8 |     key: usize,
Dec 19 14:41:27.389 INFO [stderr]   |     ^^^^^^^^^^
Dec 19 14:41:27.389 INFO [stderr] 
Dec 19 14:41:27.389 INFO [stderr] warning: field is never used: `value`
Dec 19 14:41:27.389 INFO [stderr]  --> src/main.rs:9:5
Dec 19 14:41:27.389 INFO [stderr]   |
Dec 19 14:41:27.389 INFO [stderr] 9 |     value: T,
Dec 19 14:41:27.389 INFO [stderr]   |     ^^^^^^^^
Dec 19 14:41:27.389 INFO [stderr] 
Dec 19 14:41:27.389 INFO [stderr] warning: field is never used: `left`
Dec 19 14:41:27.389 INFO [stderr]   --> src/main.rs:10:5
Dec 19 14:41:27.389 INFO [stderr]    |
Dec 19 14:41:27.389 INFO [stderr] 10 |     left: Option<usize>,
Dec 19 14:41:27.389 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 19 14:41:27.389 INFO [stderr] 
Dec 19 14:41:27.389 INFO [stderr] warning: field is never used: `right`
Dec 19 14:41:27.389 INFO [stderr]   --> src/main.rs:11:5
Dec 19 14:41:27.389 INFO [stderr]    |
Dec 19 14:41:27.389 INFO [stderr] 11 |     right: Option<usize>,
Dec 19 14:41:27.389 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
Dec 19 14:41:27.389 INFO [stderr] 
Dec 19 14:41:27.389 INFO [stderr] warning: method is never used: `new`
Dec 19 14:41:27.389 INFO [stderr]   --> src/main.rs:18:5
Dec 19 14:41:27.389 INFO [stderr]    |
Dec 19 14:41:27.389 INFO [stderr] 18 |     fn new() {
Dec 19 14:41:27.389 INFO [stderr]    |     ^^^^^^^^
Dec 19 14:41:27.389 INFO [stderr] 
Dec 19 14:41:27.389 INFO [stderr] warning: method is never used: `find`
Dec 19 14:41:27.389 INFO [stderr]   --> src/main.rs:21:5
Dec 19 14:41:27.389 INFO [stderr]    |
Dec 19 14:41:27.389 INFO [stderr] 21 |     fn find(&self, key: usize) -> Option<&T> {
Dec 19 14:41:27.389 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 14:41:27.389 INFO [stderr] 
Dec 19 14:41:27.389 INFO [stderr] warning: method is never used: `insert`
Dec 19 14:41:27.389 INFO [stderr]   --> src/main.rs:27:5
Dec 19 14:41:27.389 INFO [stderr]    |
Dec 19 14:41:27.389 INFO [stderr] 27 |     fn insert(&mut self, key: usize, value: T) {
Dec 19 14:41:27.389 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 14:41:27.389 INFO [stderr] 
Dec 19 14:41:27.389 INFO [stderr] warning: method is never used: `delete`
Dec 19 14:41:27.389 INFO [stderr]   --> src/main.rs:75:5
Dec 19 14:41:27.389 INFO [stderr]    |
Dec 19 14:41:27.389 INFO [stderr] 75 |     fn delete(&mut self, key: usize) {
Dec 19 14:41:27.389 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 14:41:27.389 INFO [stderr] 
Dec 19 14:41:27.460 INFO [stderr] warning: unused variable: `key`
Dec 19 14:41:27.460 INFO [stderr]   --> src/main.rs:21:20
Dec 19 14:41:27.460 INFO [stderr]    |
Dec 19 14:41:27.461 INFO [stderr] 21 |     fn find(&self, key: usize) -> Option<&T> {
Dec 19 14:41:27.461 INFO [stderr]    |                    ^^^ help: consider using `_key` instead
Dec 19 14:41:27.461 INFO [stderr]    |
Dec 19 14:41:27.461 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 14:41:27.461 INFO [stderr] 
Dec 19 14:41:27.461 INFO [stderr] warning: unused variable: `key`
Dec 19 14:41:27.461 INFO [stderr]   --> src/main.rs:75:26
Dec 19 14:41:27.461 INFO [stderr]    |
Dec 19 14:41:27.461 INFO [stderr] 75 |     fn delete(&mut self, key: usize) {
Dec 19 14:41:27.461 INFO [stderr]    |                          ^^^ help: consider using `_key` instead
Dec 19 14:41:27.461 INFO [stderr] 
Dec 19 14:41:27.461 INFO [stderr] warning: field is never used: `data`
Dec 19 14:41:27.461 INFO [stderr]  --> src/main.rs:2:5
Dec 19 14:41:27.461 INFO [stderr]   |
Dec 19 14:41:27.461 INFO [stderr] 2 |     data: Vec<Node<T>>,
Dec 19 14:41:27.461 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 19 14:41:27.461 INFO [stderr]   |
Dec 19 14:41:27.461 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 14:41:27.461 INFO [stderr] 
Dec 19 14:41:27.461 INFO [stderr] warning: field is never used: `root`
Dec 19 14:41:27.461 INFO [stderr]  --> src/main.rs:4:5
Dec 19 14:41:27.461 INFO [stderr]   |
Dec 19 14:41:27.461 INFO [stderr] 4 |     root: Option<usize>,
Dec 19 14:41:27.461 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 19 14:41:27.461 INFO [stderr] 
Dec 19 14:41:27.461 INFO [stderr] warning: field is never used: `key`
Dec 19 14:41:27.461 INFO [stderr]  --> src/main.rs:8:5
Dec 19 14:41:27.461 INFO [stderr]   |
Dec 19 14:41:27.461 INFO [stderr] 8 |     key: usize,
Dec 19 14:41:27.461 INFO [stderr]   |     ^^^^^^^^^^
Dec 19 14:41:27.461 INFO [stderr] 
Dec 19 14:41:27.461 INFO [stderr] warning: field is never used: `value`
Dec 19 14:41:27.461 INFO [stderr]  --> src/main.rs:9:5
Dec 19 14:41:27.461 INFO [stderr]   |
Dec 19 14:41:27.461 INFO [stderr] 9 |     value: T,
Dec 19 14:41:27.461 INFO [stderr]   |     ^^^^^^^^
Dec 19 14:41:27.461 INFO [stderr] 
Dec 19 14:41:27.461 INFO [stderr] warning: field is never used: `left`
Dec 19 14:41:27.461 INFO [stderr]   --> src/main.rs:10:5
Dec 19 14:41:27.461 INFO [stderr]    |
Dec 19 14:41:27.461 INFO [stderr] 10 |     left: Option<usize>,
Dec 19 14:41:27.461 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 19 14:41:27.461 INFO [stderr] 
Dec 19 14:41:27.461 INFO [stderr] warning: field is never used: `right`
Dec 19 14:41:27.461 INFO [stderr]   --> src/main.rs:11:5
Dec 19 14:41:27.461 INFO [stderr]    |
Dec 19 14:41:27.461 INFO [stderr] 11 |     right: Option<usize>,
Dec 19 14:41:27.461 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
Dec 19 14:41:27.461 INFO [stderr] 
Dec 19 14:41:27.461 INFO [stderr] warning: method is never used: `new`
Dec 19 14:41:27.461 INFO [stderr]   --> src/main.rs:18:5
Dec 19 14:41:27.461 INFO [stderr]    |
Dec 19 14:41:27.461 INFO [stderr] 18 |     fn new() {
Dec 19 14:41:27.461 INFO [stderr]    |     ^^^^^^^^
Dec 19 14:41:27.461 INFO [stderr] 
Dec 19 14:41:27.461 INFO [stderr] warning: method is never used: `find`
Dec 19 14:41:27.461 INFO [stderr]   --> src/main.rs:21:5
Dec 19 14:41:27.461 INFO [stderr]    |
Dec 19 14:41:27.461 INFO [stderr] 21 |     fn find(&self, key: usize) -> Option<&T> {
Dec 19 14:41:27.461 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 14:41:27.461 INFO [stderr] 
Dec 19 14:41:27.461 INFO [stderr] warning: method is never used: `insert`
Dec 19 14:41:27.461 INFO [stderr]   --> src/main.rs:27:5
Dec 19 14:41:27.461 INFO [stderr]    |
Dec 19 14:41:27.461 INFO [stderr] 27 |     fn insert(&mut self, key: usize, value: T) {
Dec 19 14:41:27.461 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 14:41:27.461 INFO [stderr] 
Dec 19 14:41:27.461 INFO [stderr] warning: method is never used: `delete`
Dec 19 14:41:27.461 INFO [stderr]   --> src/main.rs:75:5
Dec 19 14:41:27.461 INFO [stderr]    |
Dec 19 14:41:27.461 INFO [stderr] 75 |     fn delete(&mut self, key: usize) {
Dec 19 14:41:27.461 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 14:41:27.461 INFO [stderr] 
Dec 19 14:41:27.525 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
Dec 19 14:41:28.422 INFO running `"docker" "inspect" "58540eb0e5b21d1495c6a387b90ce522fd30d4cd4ccbe43e1192051695491a8b"`
Dec 19 14:41:28.736 INFO running `"docker" "rm" "-f" "58540eb0e5b21d1495c6a387b90ce522fd30d4cd4ccbe43e1192051695491a8b"`
Dec 19 14:41:29.002 INFO [stdout] 58540eb0e5b21d1495c6a387b90ce522fd30d4cd4ccbe43e1192051695491a8b