Dec 13 14:39:46.870 INFO testing jzw2/rust-data-structures against try#aa49d8ef14939ddec0e34b346b60174a5673d48f for pr-56550
Dec 13 14:39:46.870 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-2/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt build --frozen" "-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 13 14:39:47.139 INFO [stdout] 9e2e12a86fe9ef2a3feb8a8396593b1af29418b1cedd1a79bd89ca31f225613b
Dec 13 14:39:47.145 INFO running `"docker" "start" "-a" "9e2e12a86fe9ef2a3feb8a8396593b1af29418b1cedd1a79bd89ca31f225613b"`
Dec 13 14:39:47.671 INFO [stderr] usermod: no changes
Dec 13 14:39:47.696 INFO [stderr]    Compiling rust-datastructures v0.1.0 (/source)
Dec 13 14:39:47.937 INFO [stderr] warning: unused variable: `key`
Dec 13 14:39:47.938 INFO [stderr]   --> src/main.rs:21:20
Dec 13 14:39:47.938 INFO [stderr]    |
Dec 13 14:39:47.938 INFO [stderr] 21 |     fn find(&self, key: usize) -> Option<&T> {
Dec 13 14:39:47.938 INFO [stderr]    |                    ^^^ help: consider using `_key` instead
Dec 13 14:39:47.938 INFO [stderr]    |
Dec 13 14:39:47.938 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 13 14:39:47.938 INFO [stderr] 
Dec 13 14:39:47.938 INFO [stderr] warning: unused variable: `key`
Dec 13 14:39:47.938 INFO [stderr]   --> src/main.rs:75:26
Dec 13 14:39:47.938 INFO [stderr]    |
Dec 13 14:39:47.938 INFO [stderr] 75 |     fn delete(&mut self, key: usize) {
Dec 13 14:39:47.938 INFO [stderr]    |                          ^^^ help: consider using `_key` instead
Dec 13 14:39:47.938 INFO [stderr] 
Dec 13 14:39:47.938 INFO [stderr] warning: field is never used: `data`
Dec 13 14:39:47.938 INFO [stderr]  --> src/main.rs:2:5
Dec 13 14:39:47.938 INFO [stderr]   |
Dec 13 14:39:47.938 INFO [stderr] 2 |     data: Vec<Node<T>>,
Dec 13 14:39:47.938 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 13 14:39:47.938 INFO [stderr]   |
Dec 13 14:39:47.938 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 13 14:39:47.938 INFO [stderr] 
Dec 13 14:39:47.938 INFO [stderr] warning: field is never used: `root`
Dec 13 14:39:47.938 INFO [stderr]  --> src/main.rs:4:5
Dec 13 14:39:47.938 INFO [stderr]   |
Dec 13 14:39:47.938 INFO [stderr] 4 |     root: Option<usize>,
Dec 13 14:39:47.938 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 13 14:39:47.938 INFO [stderr] 
Dec 13 14:39:47.938 INFO [stderr] warning: field is never used: `key`
Dec 13 14:39:47.938 INFO [stderr]  --> src/main.rs:8:5
Dec 13 14:39:47.938 INFO [stderr]   |
Dec 13 14:39:47.938 INFO [stderr] 8 |     key: usize,
Dec 13 14:39:47.938 INFO [stderr]   |     ^^^^^^^^^^
Dec 13 14:39:47.938 INFO [stderr] 
Dec 13 14:39:47.938 INFO [stderr] warning: field is never used: `value`
Dec 13 14:39:47.938 INFO [stderr]  --> src/main.rs:9:5
Dec 13 14:39:47.938 INFO [stderr]   |
Dec 13 14:39:47.938 INFO [stderr] 9 |     value: T,
Dec 13 14:39:47.938 INFO [stderr]   |     ^^^^^^^^
Dec 13 14:39:47.938 INFO [stderr] 
Dec 13 14:39:47.938 INFO [stderr] warning: field is never used: `left`
Dec 13 14:39:47.938 INFO [stderr]   --> src/main.rs:10:5
Dec 13 14:39:47.938 INFO [stderr]    |
Dec 13 14:39:47.938 INFO [stderr] 10 |     left: Option<usize>,
Dec 13 14:39:47.938 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 13 14:39:47.938 INFO [stderr] 
Dec 13 14:39:47.938 INFO [stderr] warning: field is never used: `right`
Dec 13 14:39:47.938 INFO [stderr]   --> src/main.rs:11:5
Dec 13 14:39:47.938 INFO [stderr]    |
Dec 13 14:39:47.938 INFO [stderr] 11 |     right: Option<usize>,
Dec 13 14:39:47.938 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
Dec 13 14:39:47.938 INFO [stderr] 
Dec 13 14:39:47.938 INFO [stderr] warning: method is never used: `new`
Dec 13 14:39:47.938 INFO [stderr]   --> src/main.rs:18:5
Dec 13 14:39:47.938 INFO [stderr]    |
Dec 13 14:39:47.938 INFO [stderr] 18 |     fn new() {
Dec 13 14:39:47.938 INFO [stderr]    |     ^^^^^^^^
Dec 13 14:39:47.938 INFO [stderr] 
Dec 13 14:39:47.938 INFO [stderr] warning: method is never used: `find`
Dec 13 14:39:47.938 INFO [stderr]   --> src/main.rs:21:5
Dec 13 14:39:47.938 INFO [stderr]    |
Dec 13 14:39:47.938 INFO [stderr] 21 |     fn find(&self, key: usize) -> Option<&T> {
Dec 13 14:39:47.938 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 14:39:47.938 INFO [stderr] 
Dec 13 14:39:47.938 INFO [stderr] warning: method is never used: `insert`
Dec 13 14:39:47.938 INFO [stderr]   --> src/main.rs:27:5
Dec 13 14:39:47.938 INFO [stderr]    |
Dec 13 14:39:47.938 INFO [stderr] 27 |     fn insert(&mut self, key: usize, value: T) {
Dec 13 14:39:47.938 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 14:39:47.938 INFO [stderr] 
Dec 13 14:39:47.938 INFO [stderr] warning: method is never used: `delete`
Dec 13 14:39:47.938 INFO [stderr]   --> src/main.rs:75:5
Dec 13 14:39:47.938 INFO [stderr]    |
Dec 13 14:39:47.938 INFO [stderr] 75 |     fn delete(&mut self, key: usize) {
Dec 13 14:39:47.938 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 14:39:47.938 INFO [stderr] 
Dec 13 14:39:48.097 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.41s
Dec 13 14:39:48.099 INFO [stderr] su: No module specific data is present
Dec 13 14:39:48.484 INFO running `"docker" "inspect" "9e2e12a86fe9ef2a3feb8a8396593b1af29418b1cedd1a79bd89ca31f225613b"`
Dec 13 14:39:48.576 INFO running `"docker" "rm" "-f" "9e2e12a86fe9ef2a3feb8a8396593b1af29418b1cedd1a79bd89ca31f225613b"`
Dec 13 14:39:48.678 INFO [stdout] 9e2e12a86fe9ef2a3feb8a8396593b1af29418b1cedd1a79bd89ca31f225613b
Dec 13 14:39:48.680 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-2/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt test --frozen --no-run" "-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 13 14:39:48.878 INFO [stdout] 305c9f542a0c39e4d54b305fe32a5276427f2d0f4a7a2dfdda14a210202b39b2
Dec 13 14:39:48.880 INFO running `"docker" "start" "-a" "305c9f542a0c39e4d54b305fe32a5276427f2d0f4a7a2dfdda14a210202b39b2"`
Dec 13 14:39:49.253 INFO [stderr] usermod: no changes
Dec 13 14:39:49.287 INFO [stderr]    Compiling rust-datastructures v0.1.0 (/source)
Dec 13 14:39:49.579 INFO [stderr] warning: unused variable: `key`
Dec 13 14:39:49.579 INFO [stderr]   --> src/main.rs:21:20
Dec 13 14:39:49.579 INFO [stderr]    |
Dec 13 14:39:49.579 INFO [stderr] 21 |     fn find(&self, key: usize) -> Option<&T> {
Dec 13 14:39:49.579 INFO [stderr]    |                    ^^^ help: consider using `_key` instead
Dec 13 14:39:49.579 INFO [stderr]    |
Dec 13 14:39:49.579 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 13 14:39:49.579 INFO [stderr] 
Dec 13 14:39:49.579 INFO [stderr] warning: unused variable: `key`
Dec 13 14:39:49.579 INFO [stderr]   --> src/main.rs:75:26
Dec 13 14:39:49.579 INFO [stderr]    |
Dec 13 14:39:49.579 INFO [stderr] 75 |     fn delete(&mut self, key: usize) {
Dec 13 14:39:49.579 INFO [stderr]    |                          ^^^ help: consider using `_key` instead
Dec 13 14:39:49.579 INFO [stderr] 
Dec 13 14:39:49.579 INFO [stderr] warning: field is never used: `data`
Dec 13 14:39:49.579 INFO [stderr]  --> src/main.rs:2:5
Dec 13 14:39:49.579 INFO [stderr]   |
Dec 13 14:39:49.579 INFO [stderr] 2 |     data: Vec<Node<T>>,
Dec 13 14:39:49.579 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 13 14:39:49.579 INFO [stderr]   |
Dec 13 14:39:49.579 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 13 14:39:49.579 INFO [stderr] 
Dec 13 14:39:49.579 INFO [stderr] warning: field is never used: `root`
Dec 13 14:39:49.579 INFO [stderr]  --> src/main.rs:4:5
Dec 13 14:39:49.579 INFO [stderr]   |
Dec 13 14:39:49.579 INFO [stderr] 4 |     root: Option<usize>,
Dec 13 14:39:49.579 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 13 14:39:49.579 INFO [stderr] 
Dec 13 14:39:49.579 INFO [stderr] warning: field is never used: `key`
Dec 13 14:39:49.579 INFO [stderr]  --> src/main.rs:8:5
Dec 13 14:39:49.579 INFO [stderr]   |
Dec 13 14:39:49.579 INFO [stderr] 8 |     key: usize,
Dec 13 14:39:49.579 INFO [stderr]   |     ^^^^^^^^^^
Dec 13 14:39:49.579 INFO [stderr] 
Dec 13 14:39:49.579 INFO [stderr] warning: field is never used: `value`
Dec 13 14:39:49.579 INFO [stderr]  --> src/main.rs:9:5
Dec 13 14:39:49.579 INFO [stderr]   |
Dec 13 14:39:49.579 INFO [stderr] 9 |     value: T,
Dec 13 14:39:49.579 INFO [stderr]   |     ^^^^^^^^
Dec 13 14:39:49.579 INFO [stderr] 
Dec 13 14:39:49.579 INFO [stderr] warning: field is never used: `left`
Dec 13 14:39:49.579 INFO [stderr]   --> src/main.rs:10:5
Dec 13 14:39:49.579 INFO [stderr]    |
Dec 13 14:39:49.579 INFO [stderr] 10 |     left: Option<usize>,
Dec 13 14:39:49.579 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 13 14:39:49.579 INFO [stderr] 
Dec 13 14:39:49.579 INFO [stderr] warning: field is never used: `right`
Dec 13 14:39:49.579 INFO [stderr]   --> src/main.rs:11:5
Dec 13 14:39:49.579 INFO [stderr]    |
Dec 13 14:39:49.579 INFO [stderr] 11 |     right: Option<usize>,
Dec 13 14:39:49.579 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
Dec 13 14:39:49.579 INFO [stderr] 
Dec 13 14:39:49.579 INFO [stderr] warning: method is never used: `new`
Dec 13 14:39:49.579 INFO [stderr]   --> src/main.rs:18:5
Dec 13 14:39:49.579 INFO [stderr]    |
Dec 13 14:39:49.579 INFO [stderr] 18 |     fn new() {
Dec 13 14:39:49.579 INFO [stderr]    |     ^^^^^^^^
Dec 13 14:39:49.579 INFO [stderr] 
Dec 13 14:39:49.579 INFO [stderr] warning: method is never used: `find`
Dec 13 14:39:49.579 INFO [stderr]   --> src/main.rs:21:5
Dec 13 14:39:49.579 INFO [stderr]    |
Dec 13 14:39:49.579 INFO [stderr] 21 |     fn find(&self, key: usize) -> Option<&T> {
Dec 13 14:39:49.579 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 14:39:49.579 INFO [stderr] 
Dec 13 14:39:49.579 INFO [stderr] warning: method is never used: `insert`
Dec 13 14:39:49.579 INFO [stderr]   --> src/main.rs:27:5
Dec 13 14:39:49.579 INFO [stderr]    |
Dec 13 14:39:49.579 INFO [stderr] 27 |     fn insert(&mut self, key: usize, value: T) {
Dec 13 14:39:49.579 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 14:39:49.579 INFO [stderr] 
Dec 13 14:39:49.579 INFO [stderr] warning: method is never used: `delete`
Dec 13 14:39:49.579 INFO [stderr]   --> src/main.rs:75:5
Dec 13 14:39:49.579 INFO [stderr]    |
Dec 13 14:39:49.579 INFO [stderr] 75 |     fn delete(&mut self, key: usize) {
Dec 13 14:39:49.579 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 14:39:49.579 INFO [stderr] 
Dec 13 14:39:49.768 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.49s
Dec 13 14:39:49.771 INFO [stderr] su: No module specific data is present
Dec 13 14:39:50.068 INFO running `"docker" "inspect" "305c9f542a0c39e4d54b305fe32a5276427f2d0f4a7a2dfdda14a210202b39b2"`
Dec 13 14:39:50.123 INFO running `"docker" "rm" "-f" "305c9f542a0c39e4d54b305fe32a5276427f2d0f4a7a2dfdda14a210202b39b2"`
Dec 13 14:39:50.209 INFO [stdout] 305c9f542a0c39e4d54b305fe32a5276427f2d0f4a7a2dfdda14a210202b39b2
Dec 13 14:39:50.212 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-2/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt test --frozen" "-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 13 14:39:50.390 INFO [stdout] 9f7180ccc64296636c0a5d3d98600ab70e8081a0e9ba9477b5ba2ab6c6a58e14
Dec 13 14:39:50.398 INFO running `"docker" "start" "-a" "9f7180ccc64296636c0a5d3d98600ab70e8081a0e9ba9477b5ba2ab6c6a58e14"`
Dec 13 14:39:50.889 INFO [stderr] usermod: no changes
Dec 13 14:39:50.914 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Dec 13 14:39:50.917 INFO [stderr]      Running /target/debug/deps/rust_datastructures-14eb3606651fd886
Dec 13 14:39:50.922 INFO [stdout] 
Dec 13 14:39:50.922 INFO [stdout] running 0 tests
Dec 13 14:39:50.922 INFO [stdout] 
Dec 13 14:39:50.922 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 13 14:39:50.922 INFO [stdout] 
Dec 13 14:39:50.923 INFO [stderr] su: No module specific data is present
Dec 13 14:39:51.216 INFO running `"docker" "inspect" "9f7180ccc64296636c0a5d3d98600ab70e8081a0e9ba9477b5ba2ab6c6a58e14"`
Dec 13 14:39:51.312 INFO running `"docker" "rm" "-f" "9f7180ccc64296636c0a5d3d98600ab70e8081a0e9ba9477b5ba2ab6c6a58e14"`
Dec 13 14:39:51.400 INFO [stdout] 9f7180ccc64296636c0a5d3d98600ab70e8081a0e9ba9477b5ba2ab6c6a58e14