Dec 13 14:39:47.110 INFO testing jzw2/rust-data-structures against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 13 14:39:47.110 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-6/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-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 14:39:47.367 INFO [stdout] 30e2753412e51a8daa255d9634f8f8f1cd0faccfa7531cd01bc3d1bdf4aad2e8
Dec 13 14:39:47.369 INFO running `"docker" "start" "-a" "30e2753412e51a8daa255d9634f8f8f1cd0faccfa7531cd01bc3d1bdf4aad2e8"`
Dec 13 14:39:47.855 INFO [stderr] usermod: no changes
Dec 13 14:39:47.891 INFO [stderr]    Compiling rust-datastructures v0.1.0 (/source)
Dec 13 14:39:48.147 INFO [stderr] warning: unused variable: `key`
Dec 13 14:39:48.147 INFO [stderr]   --> src/main.rs:21:20
Dec 13 14:39:48.147 INFO [stderr]    |
Dec 13 14:39:48.147 INFO [stderr] 21 |     fn find(&self, key: usize) -> Option<&T> {
Dec 13 14:39:48.147 INFO [stderr]    |                    ^^^ help: consider using `_key` instead
Dec 13 14:39:48.147 INFO [stderr]    |
Dec 13 14:39:48.147 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 13 14:39:48.147 INFO [stderr] 
Dec 13 14:39:48.148 INFO [stderr] warning: unused variable: `key`
Dec 13 14:39:48.148 INFO [stderr]   --> src/main.rs:75:26
Dec 13 14:39:48.148 INFO [stderr]    |
Dec 13 14:39:48.148 INFO [stderr] 75 |     fn delete(&mut self, key: usize) {
Dec 13 14:39:48.148 INFO [stderr]    |                          ^^^ help: consider using `_key` instead
Dec 13 14:39:48.148 INFO [stderr] 
Dec 13 14:39:48.151 INFO [stderr] warning: field is never used: `data`
Dec 13 14:39:48.151 INFO [stderr]  --> src/main.rs:2:5
Dec 13 14:39:48.151 INFO [stderr]   |
Dec 13 14:39:48.151 INFO [stderr] 2 |     data: Vec<Node<T>>,
Dec 13 14:39:48.151 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 13 14:39:48.151 INFO [stderr]   |
Dec 13 14:39:48.151 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 13 14:39:48.151 INFO [stderr] 
Dec 13 14:39:48.151 INFO [stderr] warning: field is never used: `root`
Dec 13 14:39:48.151 INFO [stderr]  --> src/main.rs:4:5
Dec 13 14:39:48.151 INFO [stderr]   |
Dec 13 14:39:48.151 INFO [stderr] 4 |     root: Option<usize>,
Dec 13 14:39:48.151 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 13 14:39:48.151 INFO [stderr] 
Dec 13 14:39:48.152 INFO [stderr] warning: field is never used: `key`
Dec 13 14:39:48.152 INFO [stderr]  --> src/main.rs:8:5
Dec 13 14:39:48.152 INFO [stderr]   |
Dec 13 14:39:48.152 INFO [stderr] 8 |     key: usize,
Dec 13 14:39:48.152 INFO [stderr]   |     ^^^^^^^^^^
Dec 13 14:39:48.152 INFO [stderr] 
Dec 13 14:39:48.152 INFO [stderr] warning: field is never used: `value`
Dec 13 14:39:48.152 INFO [stderr]  --> src/main.rs:9:5
Dec 13 14:39:48.152 INFO [stderr]   |
Dec 13 14:39:48.152 INFO [stderr] 9 |     value: T,
Dec 13 14:39:48.152 INFO [stderr]   |     ^^^^^^^^
Dec 13 14:39:48.152 INFO [stderr] 
Dec 13 14:39:48.152 INFO [stderr] warning: field is never used: `left`
Dec 13 14:39:48.152 INFO [stderr]   --> src/main.rs:10:5
Dec 13 14:39:48.152 INFO [stderr]    |
Dec 13 14:39:48.152 INFO [stderr] 10 |     left: Option<usize>,
Dec 13 14:39:48.152 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 13 14:39:48.152 INFO [stderr] 
Dec 13 14:39:48.152 INFO [stderr] warning: field is never used: `right`
Dec 13 14:39:48.152 INFO [stderr]   --> src/main.rs:11:5
Dec 13 14:39:48.152 INFO [stderr]    |
Dec 13 14:39:48.152 INFO [stderr] 11 |     right: Option<usize>,
Dec 13 14:39:48.152 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
Dec 13 14:39:48.152 INFO [stderr] 
Dec 13 14:39:48.152 INFO [stderr] warning: method is never used: `new`
Dec 13 14:39:48.152 INFO [stderr]   --> src/main.rs:18:5
Dec 13 14:39:48.152 INFO [stderr]    |
Dec 13 14:39:48.152 INFO [stderr] 18 |     fn new() {
Dec 13 14:39:48.152 INFO [stderr]    |     ^^^^^^^^
Dec 13 14:39:48.152 INFO [stderr] 
Dec 13 14:39:48.152 INFO [stderr] warning: method is never used: `find`
Dec 13 14:39:48.152 INFO [stderr]   --> src/main.rs:21:5
Dec 13 14:39:48.152 INFO [stderr]    |
Dec 13 14:39:48.152 INFO [stderr] 21 |     fn find(&self, key: usize) -> Option<&T> {
Dec 13 14:39:48.152 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 14:39:48.152 INFO [stderr] 
Dec 13 14:39:48.152 INFO [stderr] warning: method is never used: `insert`
Dec 13 14:39:48.152 INFO [stderr]   --> src/main.rs:27:5
Dec 13 14:39:48.152 INFO [stderr]    |
Dec 13 14:39:48.152 INFO [stderr] 27 |     fn insert(&mut self, key: usize, value: T) {
Dec 13 14:39:48.152 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 14:39:48.152 INFO [stderr] 
Dec 13 14:39:48.152 INFO [stderr] warning: method is never used: `delete`
Dec 13 14:39:48.152 INFO [stderr]   --> src/main.rs:75:5
Dec 13 14:39:48.152 INFO [stderr]    |
Dec 13 14:39:48.152 INFO [stderr] 75 |     fn delete(&mut self, key: usize) {
Dec 13 14:39:48.152 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 14:39:48.152 INFO [stderr] 
Dec 13 14:39:48.323 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.44s
Dec 13 14:39:48.325 INFO [stderr] su: No module specific data is present
Dec 13 14:39:48.624 INFO running `"docker" "inspect" "30e2753412e51a8daa255d9634f8f8f1cd0faccfa7531cd01bc3d1bdf4aad2e8"`
Dec 13 14:39:48.748 INFO running `"docker" "rm" "-f" "30e2753412e51a8daa255d9634f8f8f1cd0faccfa7531cd01bc3d1bdf4aad2e8"`
Dec 13 14:39:48.882 INFO [stdout] 30e2753412e51a8daa255d9634f8f8f1cd0faccfa7531cd01bc3d1bdf4aad2e8
Dec 13 14:39:48.885 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-6/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-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 14:39:49.062 INFO [stdout] 2895c4c768a2db7b90a0c9ce882886dd2d664280341e27908d27b9736903c7ca
Dec 13 14:39:49.064 INFO running `"docker" "start" "-a" "2895c4c768a2db7b90a0c9ce882886dd2d664280341e27908d27b9736903c7ca"`
Dec 13 14:39:49.477 INFO [stderr] usermod: no changes
Dec 13 14:39:49.506 INFO [stderr]    Compiling rust-datastructures v0.1.0 (/source)
Dec 13 14:39:49.818 INFO [stderr] warning: unused variable: `key`
Dec 13 14:39:49.818 INFO [stderr]   --> src/main.rs:21:20
Dec 13 14:39:49.818 INFO [stderr]    |
Dec 13 14:39:49.818 INFO [stderr] 21 |     fn find(&self, key: usize) -> Option<&T> {
Dec 13 14:39:49.818 INFO [stderr]    |                    ^^^ help: consider using `_key` instead
Dec 13 14:39:49.818 INFO [stderr]    |
Dec 13 14:39:49.818 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 13 14:39:49.818 INFO [stderr] 
Dec 13 14:39:49.818 INFO [stderr] warning: unused variable: `key`
Dec 13 14:39:49.818 INFO [stderr]   --> src/main.rs:75:26
Dec 13 14:39:49.818 INFO [stderr]    |
Dec 13 14:39:49.818 INFO [stderr] 75 |     fn delete(&mut self, key: usize) {
Dec 13 14:39:49.818 INFO [stderr]    |                          ^^^ help: consider using `_key` instead
Dec 13 14:39:49.818 INFO [stderr] 
Dec 13 14:39:49.821 INFO [stderr] warning: field is never used: `data`
Dec 13 14:39:49.821 INFO [stderr]  --> src/main.rs:2:5
Dec 13 14:39:49.821 INFO [stderr]   |
Dec 13 14:39:49.821 INFO [stderr] 2 |     data: Vec<Node<T>>,
Dec 13 14:39:49.821 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 13 14:39:49.821 INFO [stderr]   |
Dec 13 14:39:49.821 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 13 14:39:49.821 INFO [stderr] 
Dec 13 14:39:49.821 INFO [stderr] warning: field is never used: `root`
Dec 13 14:39:49.821 INFO [stderr]  --> src/main.rs:4:5
Dec 13 14:39:49.821 INFO [stderr]   |
Dec 13 14:39:49.821 INFO [stderr] 4 |     root: Option<usize>,
Dec 13 14:39:49.821 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 13 14:39:49.821 INFO [stderr] 
Dec 13 14:39:49.821 INFO [stderr] warning: field is never used: `key`
Dec 13 14:39:49.821 INFO [stderr]  --> src/main.rs:8:5
Dec 13 14:39:49.821 INFO [stderr]   |
Dec 13 14:39:49.821 INFO [stderr] 8 |     key: usize,
Dec 13 14:39:49.821 INFO [stderr]   |     ^^^^^^^^^^
Dec 13 14:39:49.821 INFO [stderr] 
Dec 13 14:39:49.821 INFO [stderr] warning: field is never used: `value`
Dec 13 14:39:49.821 INFO [stderr]  --> src/main.rs:9:5
Dec 13 14:39:49.821 INFO [stderr]   |
Dec 13 14:39:49.821 INFO [stderr] 9 |     value: T,
Dec 13 14:39:49.821 INFO [stderr]   |     ^^^^^^^^
Dec 13 14:39:49.821 INFO [stderr] 
Dec 13 14:39:49.821 INFO [stderr] warning: field is never used: `left`
Dec 13 14:39:49.821 INFO [stderr]   --> src/main.rs:10:5
Dec 13 14:39:49.821 INFO [stderr]    |
Dec 13 14:39:49.821 INFO [stderr] 10 |     left: Option<usize>,
Dec 13 14:39:49.821 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 13 14:39:49.821 INFO [stderr] 
Dec 13 14:39:49.822 INFO [stderr] warning: field is never used: `right`
Dec 13 14:39:49.822 INFO [stderr]   --> src/main.rs:11:5
Dec 13 14:39:49.822 INFO [stderr]    |
Dec 13 14:39:49.822 INFO [stderr] 11 |     right: Option<usize>,
Dec 13 14:39:49.822 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
Dec 13 14:39:49.822 INFO [stderr] 
Dec 13 14:39:49.822 INFO [stderr] warning: method is never used: `new`
Dec 13 14:39:49.822 INFO [stderr]   --> src/main.rs:18:5
Dec 13 14:39:49.822 INFO [stderr]    |
Dec 13 14:39:49.822 INFO [stderr] 18 |     fn new() {
Dec 13 14:39:49.822 INFO [stderr]    |     ^^^^^^^^
Dec 13 14:39:49.822 INFO [stderr] 
Dec 13 14:39:49.822 INFO [stderr] warning: method is never used: `find`
Dec 13 14:39:49.822 INFO [stderr]   --> src/main.rs:21:5
Dec 13 14:39:49.822 INFO [stderr]    |
Dec 13 14:39:49.822 INFO [stderr] 21 |     fn find(&self, key: usize) -> Option<&T> {
Dec 13 14:39:49.822 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 14:39:49.822 INFO [stderr] 
Dec 13 14:39:49.822 INFO [stderr] warning: method is never used: `insert`
Dec 13 14:39:49.822 INFO [stderr]   --> src/main.rs:27:5
Dec 13 14:39:49.822 INFO [stderr]    |
Dec 13 14:39:49.822 INFO [stderr] 27 |     fn insert(&mut self, key: usize, value: T) {
Dec 13 14:39:49.822 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 14:39:49.822 INFO [stderr] 
Dec 13 14:39:49.822 INFO [stderr] warning: method is never used: `delete`
Dec 13 14:39:49.822 INFO [stderr]   --> src/main.rs:75:5
Dec 13 14:39:49.822 INFO [stderr]    |
Dec 13 14:39:49.822 INFO [stderr] 75 |     fn delete(&mut self, key: usize) {
Dec 13 14:39:49.822 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 14:39:49.822 INFO [stderr] 
Dec 13 14:39:50.051 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.55s
Dec 13 14:39:50.052 INFO [stderr] su: No module specific data is present
Dec 13 14:39:50.369 INFO running `"docker" "inspect" "2895c4c768a2db7b90a0c9ce882886dd2d664280341e27908d27b9736903c7ca"`
Dec 13 14:39:50.508 INFO running `"docker" "rm" "-f" "2895c4c768a2db7b90a0c9ce882886dd2d664280341e27908d27b9736903c7ca"`
Dec 13 14:39:50.643 INFO [stdout] 2895c4c768a2db7b90a0c9ce882886dd2d664280341e27908d27b9736903c7ca
Dec 13 14:39:50.648 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-6/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-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 14:39:50.855 INFO [stdout] 01ad9852cf3bb2f285160133671d3795363abc201da0eb0e26b11952b77b44ce
Dec 13 14:39:50.857 INFO running `"docker" "start" "-a" "01ad9852cf3bb2f285160133671d3795363abc201da0eb0e26b11952b77b44ce"`
Dec 13 14:39:51.303 INFO [stderr] usermod: no changes
Dec 13 14:39:51.324 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
Dec 13 14:39:51.324 INFO [stderr]      Running /target/debug/deps/rust_datastructures-0b17ae184da515eb
Dec 13 14:39:51.326 INFO [stdout] 
Dec 13 14:39:51.326 INFO [stdout] running 0 tests
Dec 13 14:39:51.326 INFO [stdout] 
Dec 13 14:39:51.326 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 13 14:39:51.326 INFO [stdout] 
Dec 13 14:39:51.328 INFO [stderr] su: No module specific data is present
Dec 13 14:39:51.609 INFO running `"docker" "inspect" "01ad9852cf3bb2f285160133671d3795363abc201da0eb0e26b11952b77b44ce"`
Dec 13 14:39:51.700 INFO running `"docker" "rm" "-f" "01ad9852cf3bb2f285160133671d3795363abc201da0eb0e26b11952b77b44ce"`
Dec 13 14:39:51.839 INFO [stdout] 01ad9852cf3bb2f285160133671d3795363abc201da0eb0e26b11952b77b44ce