Dec 05 19:01:06.923 INFO testing jzw2/rust-data-structures against try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468 for pr-56514
Dec 05 19:01:06.923 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-4/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-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 05 19:01:07.353 INFO [stdout] b36a0215acd35ac447c9d872561c7d1e68590b53ddc2f129c69b7f2a37166acf
Dec 05 19:01:07.358 INFO running `"docker" "start" "-a" "b36a0215acd35ac447c9d872561c7d1e68590b53ddc2f129c69b7f2a37166acf"`
Dec 05 19:01:08.032 INFO [stderr] usermod: no changes
Dec 05 19:01:08.099 INFO [stderr]    Compiling rust-datastructures v0.1.0 (/source)
Dec 05 19:01:08.464 INFO [stderr] warning: unused variable: `key`
Dec 05 19:01:08.464 INFO [stderr]   --> src/main.rs:21:20
Dec 05 19:01:08.464 INFO [stderr]    |
Dec 05 19:01:08.464 INFO [stderr] 21 |     fn find(&self, key: usize) -> Option<&T> {
Dec 05 19:01:08.464 INFO [stderr]    |                    ^^^ help: consider using `_key` instead
Dec 05 19:01:08.464 INFO [stderr]    |
Dec 05 19:01:08.464 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 05 19:01:08.464 INFO [stderr] 
Dec 05 19:01:08.464 INFO [stderr] warning: unused variable: `key`
Dec 05 19:01:08.464 INFO [stderr]   --> src/main.rs:75:26
Dec 05 19:01:08.464 INFO [stderr]    |
Dec 05 19:01:08.464 INFO [stderr] 75 |     fn delete(&mut self, key: usize) {
Dec 05 19:01:08.464 INFO [stderr]    |                          ^^^ help: consider using `_key` instead
Dec 05 19:01:08.464 INFO [stderr] 
Dec 05 19:01:08.464 INFO [stderr] warning: field is never used: `data`
Dec 05 19:01:08.464 INFO [stderr]  --> src/main.rs:2:5
Dec 05 19:01:08.464 INFO [stderr]   |
Dec 05 19:01:08.464 INFO [stderr] 2 |     data: Vec<Node<T>>,
Dec 05 19:01:08.464 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 05 19:01:08.464 INFO [stderr]   |
Dec 05 19:01:08.464 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 05 19:01:08.464 INFO [stderr] 
Dec 05 19:01:08.464 INFO [stderr] warning: field is never used: `root`
Dec 05 19:01:08.464 INFO [stderr]  --> src/main.rs:4:5
Dec 05 19:01:08.464 INFO [stderr]   |
Dec 05 19:01:08.464 INFO [stderr] 4 |     root: Option<usize>,
Dec 05 19:01:08.465 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 05 19:01:08.465 INFO [stderr] 
Dec 05 19:01:08.465 INFO [stderr] warning: field is never used: `key`
Dec 05 19:01:08.465 INFO [stderr]  --> src/main.rs:8:5
Dec 05 19:01:08.465 INFO [stderr]   |
Dec 05 19:01:08.465 INFO [stderr] 8 |     key: usize,
Dec 05 19:01:08.465 INFO [stderr]   |     ^^^^^^^^^^
Dec 05 19:01:08.465 INFO [stderr] 
Dec 05 19:01:08.465 INFO [stderr] warning: field is never used: `value`
Dec 05 19:01:08.465 INFO [stderr]  --> src/main.rs:9:5
Dec 05 19:01:08.465 INFO [stderr]   |
Dec 05 19:01:08.465 INFO [stderr] 9 |     value: T,
Dec 05 19:01:08.465 INFO [stderr]   |     ^^^^^^^^
Dec 05 19:01:08.465 INFO [stderr] 
Dec 05 19:01:08.465 INFO [stderr] warning: field is never used: `left`
Dec 05 19:01:08.465 INFO [stderr]   --> src/main.rs:10:5
Dec 05 19:01:08.465 INFO [stderr]    |
Dec 05 19:01:08.465 INFO [stderr] 10 |     left: Option<usize>,
Dec 05 19:01:08.465 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 05 19:01:08.465 INFO [stderr] 
Dec 05 19:01:08.465 INFO [stderr] warning: field is never used: `right`
Dec 05 19:01:08.465 INFO [stderr]   --> src/main.rs:11:5
Dec 05 19:01:08.465 INFO [stderr]    |
Dec 05 19:01:08.465 INFO [stderr] 11 |     right: Option<usize>,
Dec 05 19:01:08.465 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
Dec 05 19:01:08.465 INFO [stderr] 
Dec 05 19:01:08.465 INFO [stderr] warning: method is never used: `new`
Dec 05 19:01:08.465 INFO [stderr]   --> src/main.rs:18:5
Dec 05 19:01:08.465 INFO [stderr]    |
Dec 05 19:01:08.465 INFO [stderr] 18 |     fn new() {
Dec 05 19:01:08.465 INFO [stderr]    |     ^^^^^^^^
Dec 05 19:01:08.465 INFO [stderr] 
Dec 05 19:01:08.465 INFO [stderr] warning: method is never used: `find`
Dec 05 19:01:08.465 INFO [stderr]   --> src/main.rs:21:5
Dec 05 19:01:08.465 INFO [stderr]    |
Dec 05 19:01:08.465 INFO [stderr] 21 |     fn find(&self, key: usize) -> Option<&T> {
Dec 05 19:01:08.465 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 19:01:08.465 INFO [stderr] 
Dec 05 19:01:08.465 INFO [stderr] warning: method is never used: `insert`
Dec 05 19:01:08.465 INFO [stderr]   --> src/main.rs:27:5
Dec 05 19:01:08.465 INFO [stderr]    |
Dec 05 19:01:08.465 INFO [stderr] 27 |     fn insert(&mut self, key: usize, value: T) {
Dec 05 19:01:08.465 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 19:01:08.465 INFO [stderr] 
Dec 05 19:01:08.465 INFO [stderr] warning: method is never used: `delete`
Dec 05 19:01:08.465 INFO [stderr]   --> src/main.rs:75:5
Dec 05 19:01:08.465 INFO [stderr]    |
Dec 05 19:01:08.465 INFO [stderr] 75 |     fn delete(&mut self, key: usize) {
Dec 05 19:01:08.465 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 19:01:08.465 INFO [stderr] 
Dec 05 19:01:08.761 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
Dec 05 19:01:08.764 INFO [stderr] su: No module specific data is present
Dec 05 19:01:09.608 INFO running `"docker" "inspect" "b36a0215acd35ac447c9d872561c7d1e68590b53ddc2f129c69b7f2a37166acf"`
Dec 05 19:01:09.748 INFO running `"docker" "rm" "-f" "b36a0215acd35ac447c9d872561c7d1e68590b53ddc2f129c69b7f2a37166acf"`
Dec 05 19:01:09.876 INFO [stdout] b36a0215acd35ac447c9d872561c7d1e68590b53ddc2f129c69b7f2a37166acf
Dec 05 19:01:09.881 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-4/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-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 05 19:01:10.131 INFO [stdout] 6b46969d8b07c4578cd44f4f6a819d13b87d9ac7114507ec1ab459371fa37b67
Dec 05 19:01:10.133 INFO running `"docker" "start" "-a" "6b46969d8b07c4578cd44f4f6a819d13b87d9ac7114507ec1ab459371fa37b67"`
Dec 05 19:01:10.698 INFO [stderr] usermod: no changes
Dec 05 19:01:10.796 INFO [stderr]    Compiling rust-datastructures v0.1.0 (/source)
Dec 05 19:01:11.088 INFO [stderr] warning: unused variable: `key`
Dec 05 19:01:11.088 INFO [stderr]   --> src/main.rs:21:20
Dec 05 19:01:11.088 INFO [stderr]    |
Dec 05 19:01:11.088 INFO [stderr] 21 |     fn find(&self, key: usize) -> Option<&T> {
Dec 05 19:01:11.088 INFO [stderr]    |                    ^^^ help: consider using `_key` instead
Dec 05 19:01:11.088 INFO [stderr]    |
Dec 05 19:01:11.088 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 05 19:01:11.088 INFO [stderr] 
Dec 05 19:01:11.088 INFO [stderr] warning: unused variable: `key`
Dec 05 19:01:11.088 INFO [stderr]   --> src/main.rs:75:26
Dec 05 19:01:11.088 INFO [stderr]    |
Dec 05 19:01:11.088 INFO [stderr] 75 |     fn delete(&mut self, key: usize) {
Dec 05 19:01:11.088 INFO [stderr]    |                          ^^^ help: consider using `_key` instead
Dec 05 19:01:11.088 INFO [stderr] 
Dec 05 19:01:11.092 INFO [stderr] warning: field is never used: `data`
Dec 05 19:01:11.092 INFO [stderr]  --> src/main.rs:2:5
Dec 05 19:01:11.092 INFO [stderr]   |
Dec 05 19:01:11.092 INFO [stderr] 2 |     data: Vec<Node<T>>,
Dec 05 19:01:11.092 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 05 19:01:11.092 INFO [stderr]   |
Dec 05 19:01:11.092 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 05 19:01:11.092 INFO [stderr] 
Dec 05 19:01:11.093 INFO [stderr] warning: field is never used: `root`
Dec 05 19:01:11.093 INFO [stderr]  --> src/main.rs:4:5
Dec 05 19:01:11.093 INFO [stderr]   |
Dec 05 19:01:11.093 INFO [stderr] 4 |     root: Option<usize>,
Dec 05 19:01:11.093 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 05 19:01:11.093 INFO [stderr] 
Dec 05 19:01:11.093 INFO [stderr] warning: field is never used: `key`
Dec 05 19:01:11.093 INFO [stderr]  --> src/main.rs:8:5
Dec 05 19:01:11.093 INFO [stderr]   |
Dec 05 19:01:11.093 INFO [stderr] 8 |     key: usize,
Dec 05 19:01:11.093 INFO [stderr]   |     ^^^^^^^^^^
Dec 05 19:01:11.093 INFO [stderr] 
Dec 05 19:01:11.093 INFO [stderr] warning: field is never used: `value`
Dec 05 19:01:11.093 INFO [stderr]  --> src/main.rs:9:5
Dec 05 19:01:11.093 INFO [stderr]   |
Dec 05 19:01:11.093 INFO [stderr] 9 |     value: T,
Dec 05 19:01:11.093 INFO [stderr]   |     ^^^^^^^^
Dec 05 19:01:11.093 INFO [stderr] 
Dec 05 19:01:11.093 INFO [stderr] warning: field is never used: `left`
Dec 05 19:01:11.093 INFO [stderr]   --> src/main.rs:10:5
Dec 05 19:01:11.093 INFO [stderr]    |
Dec 05 19:01:11.093 INFO [stderr] 10 |     left: Option<usize>,
Dec 05 19:01:11.093 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 05 19:01:11.093 INFO [stderr] 
Dec 05 19:01:11.093 INFO [stderr] warning: field is never used: `right`
Dec 05 19:01:11.093 INFO [stderr]   --> src/main.rs:11:5
Dec 05 19:01:11.093 INFO [stderr]    |
Dec 05 19:01:11.093 INFO [stderr] 11 |     right: Option<usize>,
Dec 05 19:01:11.093 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
Dec 05 19:01:11.093 INFO [stderr] 
Dec 05 19:01:11.093 INFO [stderr] warning: method is never used: `new`
Dec 05 19:01:11.093 INFO [stderr]   --> src/main.rs:18:5
Dec 05 19:01:11.093 INFO [stderr]    |
Dec 05 19:01:11.093 INFO [stderr] 18 |     fn new() {
Dec 05 19:01:11.093 INFO [stderr]    |     ^^^^^^^^
Dec 05 19:01:11.093 INFO [stderr] 
Dec 05 19:01:11.093 INFO [stderr] warning: method is never used: `find`
Dec 05 19:01:11.093 INFO [stderr]   --> src/main.rs:21:5
Dec 05 19:01:11.093 INFO [stderr]    |
Dec 05 19:01:11.093 INFO [stderr] 21 |     fn find(&self, key: usize) -> Option<&T> {
Dec 05 19:01:11.093 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 19:01:11.093 INFO [stderr] 
Dec 05 19:01:11.093 INFO [stderr] warning: method is never used: `insert`
Dec 05 19:01:11.093 INFO [stderr]   --> src/main.rs:27:5
Dec 05 19:01:11.093 INFO [stderr]    |
Dec 05 19:01:11.093 INFO [stderr] 27 |     fn insert(&mut self, key: usize, value: T) {
Dec 05 19:01:11.093 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 19:01:11.093 INFO [stderr] 
Dec 05 19:01:11.093 INFO [stderr] warning: method is never used: `delete`
Dec 05 19:01:11.093 INFO [stderr]   --> src/main.rs:75:5
Dec 05 19:01:11.093 INFO [stderr]    |
Dec 05 19:01:11.093 INFO [stderr] 75 |     fn delete(&mut self, key: usize) {
Dec 05 19:01:11.093 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 19:01:11.093 INFO [stderr] 
Dec 05 19:01:11.424 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
Dec 05 19:01:11.427 INFO [stderr] su: No module specific data is present
Dec 05 19:01:11.768 INFO running `"docker" "inspect" "6b46969d8b07c4578cd44f4f6a819d13b87d9ac7114507ec1ab459371fa37b67"`
Dec 05 19:01:11.914 INFO running `"docker" "rm" "-f" "6b46969d8b07c4578cd44f4f6a819d13b87d9ac7114507ec1ab459371fa37b67"`
Dec 05 19:01:12.057 INFO [stdout] 6b46969d8b07c4578cd44f4f6a819d13b87d9ac7114507ec1ab459371fa37b67
Dec 05 19:01:12.060 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-4/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-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 05 19:01:12.387 INFO [stdout] 51d85b77e0a70ec080f20875f026bbe7aba72177c77d8bf5a6d747d325f5eb1d
Dec 05 19:01:12.390 INFO running `"docker" "start" "-a" "51d85b77e0a70ec080f20875f026bbe7aba72177c77d8bf5a6d747d325f5eb1d"`
Dec 05 19:01:12.854 INFO [stderr] usermod: no changes
Dec 05 19:01:12.880 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Dec 05 19:01:12.880 INFO [stderr]      Running /target/debug/deps/rust_datastructures-4654963e91c3c86c
Dec 05 19:01:12.882 INFO [stdout] 
Dec 05 19:01:12.882 INFO [stdout] running 0 tests
Dec 05 19:01:12.882 INFO [stdout] 
Dec 05 19:01:12.882 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 05 19:01:12.882 INFO [stdout] 
Dec 05 19:01:12.883 INFO [stderr] su: No module specific data is present
Dec 05 19:01:13.124 INFO running `"docker" "inspect" "51d85b77e0a70ec080f20875f026bbe7aba72177c77d8bf5a6d747d325f5eb1d"`
Dec 05 19:01:13.195 INFO running `"docker" "rm" "-f" "51d85b77e0a70ec080f20875f026bbe7aba72177c77d8bf5a6d747d325f5eb1d"`
Dec 05 19:01:13.275 INFO [stdout] 51d85b77e0a70ec080f20875f026bbe7aba72177c77d8bf5a6d747d325f5eb1d