Oct 31 21:41:32.811 INFO checking sbwtw/RBTree against try#d7816399d50d407bbce1efe9dbadf8faaaf568fc for pr-55538
Oct 31 21:41:32.812 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55538/worker-0/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-55538/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/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 +d7816399d50d407bbce1efe9dbadf8faaaf568fc-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 21:41:33.346 INFO blam! 5b74b7d13eb9d3a4d3b897f02a8b754820d6c677f5dbf537affd8cc234a4a090
Oct 31 21:41:33.348 INFO running `"docker" "start" "-a" "5b74b7d13eb9d3a4d3b897f02a8b754820d6c677f5dbf537affd8cc234a4a090"`
Oct 31 21:41:35.483 INFO kablam! usermod: no changes
Oct 31 21:41:35.564 INFO kablam!     Checking rbtree v0.1.0 (/source)
Oct 31 21:41:36.174 INFO kablam! warning: variant is never constructed: `Red`
Oct 31 21:41:36.175 INFO kablam!  --> src/main.rs:7:5
Oct 31 21:41:36.176 INFO kablam!   |
Oct 31 21:41:36.177 INFO kablam! 7 |     Red,
Oct 31 21:41:36.177 INFO kablam!   |     ^^^
Oct 31 21:41:36.178 INFO kablam!   |
Oct 31 21:41:36.179 INFO kablam!   = note: #[warn(dead_code)] on by default
Oct 31 21:41:36.179 INFO kablam! 
Oct 31 21:41:36.180 INFO kablam! warning: enum is never used: `Direction`
Oct 31 21:41:36.181 INFO kablam!   --> src/main.rs:12:1
Oct 31 21:41:36.181 INFO kablam!    |
Oct 31 21:41:36.182 INFO kablam! 12 | enum Direction {
Oct 31 21:41:36.182 INFO kablam!    | ^^^^^^^^^^^^^^
Oct 31 21:41:36.183 INFO kablam! 
Oct 31 21:41:36.184 INFO kablam! warning: function is never used: `ensure_root_black`
Oct 31 21:41:36.185 INFO kablam!   --> src/main.rs:79:1
Oct 31 21:41:36.185 INFO kablam!    |
Oct 31 21:41:36.186 INFO kablam! 79 | fn ensure_root_black<K: KeyTrait, V: ValueTrait>(root: &mut OptNode<K, V>) {
Oct 31 21:41:36.186 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 31 21:41:36.187 INFO kablam! 
Oct 31 21:41:36.188 INFO kablam! warning: function is never used: `insert_n`
Oct 31 21:41:36.189 INFO kablam!   --> src/main.rs:85:1
Oct 31 21:41:36.189 INFO kablam!    |
Oct 31 21:41:36.190 INFO kablam! 85 | fn insert_n<K: KeyTrait, V: ValueTrait>(root: &mut OptNode<K, V>, key: K, value: V) -> Option<V> {
Oct 31 21:41:36.190 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 31 21:41:36.191 INFO kablam! 
Oct 31 21:41:36.192 INFO kablam! warning: method is never used: `set_color`
Oct 31 21:41:36.193 INFO kablam!    --> src/main.rs:120:5
Oct 31 21:41:36.193 INFO kablam!     |
Oct 31 21:41:36.194 INFO kablam! 120 |     fn set_color(&mut self, color: RBColor) {
Oct 31 21:41:36.194 INFO kablam!     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 31 21:41:36.195 INFO kablam! 
Oct 31 21:41:36.456 INFO kablam! warning: variant is never constructed: `Red`
Oct 31 21:41:36.456 INFO kablam!  --> src/main.rs:7:5
Oct 31 21:41:36.456 INFO kablam!   |
Oct 31 21:41:36.456 INFO kablam! 7 |     Red,
Oct 31 21:41:36.456 INFO kablam!   |     ^^^
Oct 31 21:41:36.456 INFO kablam!   |
Oct 31 21:41:36.456 INFO kablam!   = note: #[warn(dead_code)] on by default
Oct 31 21:41:36.456 INFO kablam! 
Oct 31 21:41:36.456 INFO kablam! warning: enum is never used: `Direction`
Oct 31 21:41:36.456 INFO kablam!   --> src/main.rs:12:1
Oct 31 21:41:36.456 INFO kablam!    |
Oct 31 21:41:36.456 INFO kablam! 12 | enum Direction {
Oct 31 21:41:36.457 INFO kablam!    | ^^^^^^^^^^^^^^
Oct 31 21:41:36.457 INFO kablam! 
Oct 31 21:41:36.457 INFO kablam! warning: function is never used: `ensure_root_black`
Oct 31 21:41:36.457 INFO kablam!   --> src/main.rs:79:1
Oct 31 21:41:36.457 INFO kablam!    |
Oct 31 21:41:36.457 INFO kablam! 79 | fn ensure_root_black<K: KeyTrait, V: ValueTrait>(root: &mut OptNode<K, V>) {
Oct 31 21:41:36.457 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 31 21:41:36.457 INFO kablam! 
Oct 31 21:41:36.457 INFO kablam! warning: function is never used: `insert_n`
Oct 31 21:41:36.457 INFO kablam!   --> src/main.rs:85:1
Oct 31 21:41:36.457 INFO kablam!    |
Oct 31 21:41:36.457 INFO kablam! 85 | fn insert_n<K: KeyTrait, V: ValueTrait>(root: &mut OptNode<K, V>, key: K, value: V) -> Option<V> {
Oct 31 21:41:36.457 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 31 21:41:36.457 INFO kablam! 
Oct 31 21:41:36.457 INFO kablam! warning: method is never used: `set_color`
Oct 31 21:41:36.457 INFO kablam!    --> src/main.rs:120:5
Oct 31 21:41:36.457 INFO kablam!     |
Oct 31 21:41:36.457 INFO kablam! 120 |     fn set_color(&mut self, color: RBColor) {
Oct 31 21:41:36.457 INFO kablam!     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 31 21:41:36.457 INFO kablam! 
Oct 31 21:41:36.504 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.98s
Oct 31 21:41:36.511 INFO kablam! su: No module specific data is present
Oct 31 21:41:37.734 INFO running `"docker" "rm" "-f" "5b74b7d13eb9d3a4d3b897f02a8b754820d6c677f5dbf537affd8cc234a4a090"`
Oct 31 21:41:38.086 INFO blam! 5b74b7d13eb9d3a4d3b897f02a8b754820d6c677f5dbf537affd8cc234a4a090