Oct 31 21:41:37.866 INFO checking sbwtw/RBTree against master#05812fa8c588473f03e3fa7cf59cd84f4f37c715 for pr-55538
Oct 31 21:41:37.868 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55538/worker-6/master#05812fa8c588473f03e3fa7cf59cd84f4f37c715:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-55538/master#05812fa8c588473f03e3fa7cf59cd84f4f37c715:/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 +05812fa8c588473f03e3fa7cf59cd84f4f37c715-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 31 21:41:38.496 INFO blam! 0418bdff888377792c19a66e0e0a21d6ec5a5f85e33504ef3861688af82092cf
Oct 31 21:41:38.504 INFO running `"docker" "start" "-a" "0418bdff888377792c19a66e0e0a21d6ec5a5f85e33504ef3861688af82092cf"`
Oct 31 21:41:39.936 INFO kablam! usermod: no changes
Oct 31 21:41:40.000 INFO kablam!     Checking rbtree v0.1.0 (/source)
Oct 31 21:41:40.448 INFO kablam! warning: variant is never constructed: `Red`
Oct 31 21:41:40.448 INFO kablam!  --> src/main.rs:7:5
Oct 31 21:41:40.448 INFO kablam!   |
Oct 31 21:41:40.448 INFO kablam! 7 |     Red,
Oct 31 21:41:40.448 INFO kablam!   |     ^^^
Oct 31 21:41:40.448 INFO kablam!   |
Oct 31 21:41:40.448 INFO kablam!   = note: #[warn(dead_code)] on by default
Oct 31 21:41:40.448 INFO kablam! 
Oct 31 21:41:40.448 INFO kablam! warning: enum is never used: `Direction`
Oct 31 21:41:40.448 INFO kablam!   --> src/main.rs:12:1
Oct 31 21:41:40.448 INFO kablam!    |
Oct 31 21:41:40.448 INFO kablam! 12 | enum Direction {
Oct 31 21:41:40.448 INFO kablam!    | ^^^^^^^^^^^^^^
Oct 31 21:41:40.448 INFO kablam! 
Oct 31 21:41:40.448 INFO kablam! warning: function is never used: `ensure_root_black`
Oct 31 21:41:40.448 INFO kablam!   --> src/main.rs:79:1
Oct 31 21:41:40.448 INFO kablam!    |
Oct 31 21:41:40.448 INFO kablam! 79 | fn ensure_root_black<K: KeyTrait, V: ValueTrait>(root: &mut OptNode<K, V>) {
Oct 31 21:41:40.448 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 31 21:41:40.448 INFO kablam! 
Oct 31 21:41:40.448 INFO kablam! warning: function is never used: `insert_n`
Oct 31 21:41:40.448 INFO kablam!   --> src/main.rs:85:1
Oct 31 21:41:40.448 INFO kablam!    |
Oct 31 21:41:40.448 INFO kablam! 85 | fn insert_n<K: KeyTrait, V: ValueTrait>(root: &mut OptNode<K, V>, key: K, value: V) -> Option<V> {
Oct 31 21:41:40.448 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 31 21:41:40.448 INFO kablam! 
Oct 31 21:41:40.448 INFO kablam! warning: method is never used: `set_color`
Oct 31 21:41:40.448 INFO kablam!    --> src/main.rs:120:5
Oct 31 21:41:40.448 INFO kablam!     |
Oct 31 21:41:40.448 INFO kablam! 120 |     fn set_color(&mut self, color: RBColor) {
Oct 31 21:41:40.448 INFO kablam!     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 31 21:41:40.448 INFO kablam! 
Oct 31 21:41:40.567 INFO kablam! warning: variant is never constructed: `Red`
Oct 31 21:41:40.567 INFO kablam!  --> src/main.rs:7:5
Oct 31 21:41:40.567 INFO kablam!   |
Oct 31 21:41:40.568 INFO kablam! 7 |     Red,
Oct 31 21:41:40.568 INFO kablam!   |     ^^^
Oct 31 21:41:40.568 INFO kablam!   |
Oct 31 21:41:40.569 INFO kablam!   = note: #[warn(dead_code)] on by default
Oct 31 21:41:40.569 INFO kablam! 
Oct 31 21:41:40.569 INFO kablam! warning: enum is never used: `Direction`
Oct 31 21:41:40.569 INFO kablam!   --> src/main.rs:12:1
Oct 31 21:41:40.570 INFO kablam!    |
Oct 31 21:41:40.570 INFO kablam! 12 | enum Direction {
Oct 31 21:41:40.570 INFO kablam!    | ^^^^^^^^^^^^^^
Oct 31 21:41:40.570 INFO kablam! 
Oct 31 21:41:40.571 INFO kablam! warning: function is never used: `ensure_root_black`
Oct 31 21:41:40.571 INFO kablam!   --> src/main.rs:79:1
Oct 31 21:41:40.571 INFO kablam!    |
Oct 31 21:41:40.572 INFO kablam! 79 | fn ensure_root_black<K: KeyTrait, V: ValueTrait>(root: &mut OptNode<K, V>) {
Oct 31 21:41:40.572 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 31 21:41:40.572 INFO kablam! 
Oct 31 21:41:40.572 INFO kablam! warning: function is never used: `insert_n`
Oct 31 21:41:40.573 INFO kablam!   --> src/main.rs:85:1
Oct 31 21:41:40.573 INFO kablam!    |
Oct 31 21:41:40.573 INFO kablam! 85 | fn insert_n<K: KeyTrait, V: ValueTrait>(root: &mut OptNode<K, V>, key: K, value: V) -> Option<V> {
Oct 31 21:41:40.573 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 31 21:41:40.574 INFO kablam! 
Oct 31 21:41:40.574 INFO kablam! warning: method is never used: `set_color`
Oct 31 21:41:40.574 INFO kablam!    --> src/main.rs:120:5
Oct 31 21:41:40.574 INFO kablam!     |
Oct 31 21:41:40.575 INFO kablam! 120 |     fn set_color(&mut self, color: RBColor) {
Oct 31 21:41:40.575 INFO kablam!     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 31 21:41:40.575 INFO kablam! 
Oct 31 21:41:40.616 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.64s
Oct 31 21:41:40.619 INFO kablam! su: No module specific data is present
Oct 31 21:41:41.682 INFO running `"docker" "rm" "-f" "0418bdff888377792c19a66e0e0a21d6ec5a5f85e33504ef3861688af82092cf"`
Oct 31 21:41:41.999 INFO blam! 0418bdff888377792c19a66e0e0a21d6ec5a5f85e33504ef3861688af82092cf