Dec 04 15:19:20.472 INFO checking lbrande/red-black-tree against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 15:19:20.473 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-5/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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"`
Dec 04 15:19:20.822 INFO [stdout] d7c9bae7257256c22570d16abf9e6a16f7d4a9c1c3de0b661b9009c580ad5881
Dec 04 15:19:20.824 INFO running `"docker" "start" "-a" "d7c9bae7257256c22570d16abf9e6a16f7d4a9c1c3de0b661b9009c580ad5881"`
Dec 04 15:19:21.299 INFO [stderr] usermod: no changes
Dec 04 15:19:21.339 INFO [stderr]     Checking red-black-tree v0.1.0 (/source)
Dec 04 15:19:21.640 INFO [stderr] warning: field is never used: `parent`
Dec 04 15:19:21.640 INFO [stderr]   --> src/lib.rs:36:5
Dec 04 15:19:21.640 INFO [stderr]    |
Dec 04 15:19:21.640 INFO [stderr] 36 |     parent: RefCell<Weak<RedBlackNode<T>>>,
Dec 04 15:19:21.640 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:19:21.640 INFO [stderr]    |
Dec 04 15:19:21.640 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 04 15:19:21.640 INFO [stderr] 
Dec 04 15:19:21.640 INFO [stderr] warning: field is never used: `red`
Dec 04 15:19:21.640 INFO [stderr]   --> src/lib.rs:39:5
Dec 04 15:19:21.640 INFO [stderr]    |
Dec 04 15:19:21.640 INFO [stderr] 39 |     red: bool,
Dec 04 15:19:21.640 INFO [stderr]    |     ^^^^^^^^^
Dec 04 15:19:21.640 INFO [stderr] 
Dec 04 15:19:21.640 INFO [stderr] warning: method is never used: `grandparent`
Dec 04 15:19:21.640 INFO [stderr]   --> src/lib.rs:96:5
Dec 04 15:19:21.640 INFO [stderr]    |
Dec 04 15:19:21.640 INFO [stderr] 96 |     fn grandparent(&self) -> Weak<RedBlackNode<T>> {
Dec 04 15:19:21.640 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:19:21.640 INFO [stderr] 
Dec 04 15:19:21.640 INFO [stderr] warning: method is never used: `uncle`
Dec 04 15:19:21.640 INFO [stderr]    --> src/lib.rs:106:5
Dec 04 15:19:21.640 INFO [stderr]     |
Dec 04 15:19:21.640 INFO [stderr] 106 |     fn uncle(&self) -> Weak<RedBlackNode<T>> {
Dec 04 15:19:21.640 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:19:21.640 INFO [stderr] 
Dec 04 15:19:21.661 INFO [stderr] warning: field is never used: `parent`
Dec 04 15:19:21.661 INFO [stderr]   --> src/lib.rs:36:5
Dec 04 15:19:21.661 INFO [stderr]    |
Dec 04 15:19:21.661 INFO [stderr] 36 |     parent: RefCell<Weak<RedBlackNode<T>>>,
Dec 04 15:19:21.661 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:19:21.661 INFO [stderr]    |
Dec 04 15:19:21.661 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 04 15:19:21.661 INFO [stderr] 
Dec 04 15:19:21.661 INFO [stderr] warning: field is never used: `red`
Dec 04 15:19:21.661 INFO [stderr]   --> src/lib.rs:39:5
Dec 04 15:19:21.661 INFO [stderr]    |
Dec 04 15:19:21.661 INFO [stderr] 39 |     red: bool,
Dec 04 15:19:21.661 INFO [stderr]    |     ^^^^^^^^^
Dec 04 15:19:21.661 INFO [stderr] 
Dec 04 15:19:21.661 INFO [stderr] warning: method is never used: `grandparent`
Dec 04 15:19:21.661 INFO [stderr]   --> src/lib.rs:96:5
Dec 04 15:19:21.661 INFO [stderr]    |
Dec 04 15:19:21.661 INFO [stderr] 96 |     fn grandparent(&self) -> Weak<RedBlackNode<T>> {
Dec 04 15:19:21.661 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:19:21.661 INFO [stderr] 
Dec 04 15:19:21.661 INFO [stderr] warning: method is never used: `uncle`
Dec 04 15:19:21.661 INFO [stderr]    --> src/lib.rs:106:5
Dec 04 15:19:21.661 INFO [stderr]     |
Dec 04 15:19:21.661 INFO [stderr] 106 |     fn uncle(&self) -> Weak<RedBlackNode<T>> {
Dec 04 15:19:21.661 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 15:19:21.661 INFO [stderr] 
Dec 04 15:19:21.970 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.65s
Dec 04 15:19:21.972 INFO [stderr] su: No module specific data is present
Dec 04 15:19:22.299 INFO running `"docker" "inspect" "d7c9bae7257256c22570d16abf9e6a16f7d4a9c1c3de0b661b9009c580ad5881"`
Dec 04 15:19:22.479 INFO running `"docker" "rm" "-f" "d7c9bae7257256c22570d16abf9e6a16f7d4a9c1c3de0b661b9009c580ad5881"`
Dec 04 15:19:22.647 INFO [stdout] d7c9bae7257256c22570d16abf9e6a16f7d4a9c1c3de0b661b9009c580ad5881