Dec 17 20:51:31.876 INFO checking lbrande/red-black-tree against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 20:51:31.876 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/lbrande/red-black-tree:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 20:51:32.064 INFO [stdout] b88c653964e49aa5e5b50fa6ebd569858b9dca9f597b50b0d9a872e8bdb79090
Dec 17 20:51:32.066 INFO running `"docker" "start" "-a" "b88c653964e49aa5e5b50fa6ebd569858b9dca9f597b50b0d9a872e8bdb79090"`
Dec 17 20:51:32.700 INFO [stderr]     Checking red-black-tree v0.1.0 (/opt/crater/workdir)
Dec 17 20:51:32.895 INFO [stderr] warning: field is never used: `parent`
Dec 17 20:51:32.895 INFO [stderr]   --> src/lib.rs:36:5
Dec 17 20:51:32.895 INFO [stderr]    |
Dec 17 20:51:32.895 INFO [stderr] 36 |     parent: RefCell<Weak<RedBlackNode<T>>>,
Dec 17 20:51:32.895 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:51:32.895 INFO [stderr]    |
Dec 17 20:51:32.895 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 17 20:51:32.895 INFO [stderr] 
Dec 17 20:51:32.895 INFO [stderr] warning: field is never used: `red`
Dec 17 20:51:32.895 INFO [stderr]   --> src/lib.rs:39:5
Dec 17 20:51:32.895 INFO [stderr]    |
Dec 17 20:51:32.895 INFO [stderr] 39 |     red: bool,
Dec 17 20:51:32.895 INFO [stderr]    |     ^^^^^^^^^
Dec 17 20:51:32.895 INFO [stderr] 
Dec 17 20:51:32.895 INFO [stderr] warning: method is never used: `grandparent`
Dec 17 20:51:32.895 INFO [stderr]   --> src/lib.rs:96:5
Dec 17 20:51:32.895 INFO [stderr]    |
Dec 17 20:51:32.895 INFO [stderr] 96 |     fn grandparent(&self) -> Weak<RedBlackNode<T>> {
Dec 17 20:51:32.895 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:51:32.895 INFO [stderr] 
Dec 17 20:51:32.895 INFO [stderr] warning: method is never used: `uncle`
Dec 17 20:51:32.895 INFO [stderr]    --> src/lib.rs:106:5
Dec 17 20:51:32.895 INFO [stderr]     |
Dec 17 20:51:32.895 INFO [stderr] 106 |     fn uncle(&self) -> Weak<RedBlackNode<T>> {
Dec 17 20:51:32.896 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:51:32.896 INFO [stderr] 
Dec 17 20:51:32.920 INFO [stderr] warning: field is never used: `parent`
Dec 17 20:51:32.920 INFO [stderr]   --> src/lib.rs:36:5
Dec 17 20:51:32.920 INFO [stderr]    |
Dec 17 20:51:32.920 INFO [stderr] 36 |     parent: RefCell<Weak<RedBlackNode<T>>>,
Dec 17 20:51:32.920 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:51:32.920 INFO [stderr]    |
Dec 17 20:51:32.920 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 17 20:51:32.920 INFO [stderr] 
Dec 17 20:51:32.920 INFO [stderr] warning: field is never used: `red`
Dec 17 20:51:32.920 INFO [stderr]   --> src/lib.rs:39:5
Dec 17 20:51:32.920 INFO [stderr]    |
Dec 17 20:51:32.920 INFO [stderr] 39 |     red: bool,
Dec 17 20:51:32.920 INFO [stderr]    |     ^^^^^^^^^
Dec 17 20:51:32.920 INFO [stderr] 
Dec 17 20:51:32.920 INFO [stderr] warning: method is never used: `grandparent`
Dec 17 20:51:32.920 INFO [stderr]   --> src/lib.rs:96:5
Dec 17 20:51:32.920 INFO [stderr]    |
Dec 17 20:51:32.920 INFO [stderr] 96 |     fn grandparent(&self) -> Weak<RedBlackNode<T>> {
Dec 17 20:51:32.920 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:51:32.920 INFO [stderr] 
Dec 17 20:51:32.920 INFO [stderr] warning: method is never used: `uncle`
Dec 17 20:51:32.920 INFO [stderr]    --> src/lib.rs:106:5
Dec 17 20:51:32.920 INFO [stderr]     |
Dec 17 20:51:32.920 INFO [stderr] 106 |     fn uncle(&self) -> Weak<RedBlackNode<T>> {
Dec 17 20:51:32.920 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:51:32.920 INFO [stderr] 
Dec 17 20:51:33.128 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.44s
Dec 17 20:51:33.369 INFO running `"docker" "inspect" "b88c653964e49aa5e5b50fa6ebd569858b9dca9f597b50b0d9a872e8bdb79090"`
Dec 17 20:51:33.474 INFO running `"docker" "rm" "-f" "b88c653964e49aa5e5b50fa6ebd569858b9dca9f597b50b0d9a872e8bdb79090"`
Dec 17 20:51:33.543 INFO [stdout] b88c653964e49aa5e5b50fa6ebd569858b9dca9f597b50b0d9a872e8bdb79090