Nov 28 01:56:01.870 INFO checking lbrande/red-black-tree against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074
Nov 28 01:56:01.871 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-6/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56074/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/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 +db42d4dad33013eba11ef37342ad9f614e5652b8-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"`
Nov 28 01:56:02.303 INFO [stdout] 1ed6288949bd8156eac63b55864138975a46de6fbe7cd8431fe5823320610533
Nov 28 01:56:02.313 INFO running `"docker" "start" "-a" "1ed6288949bd8156eac63b55864138975a46de6fbe7cd8431fe5823320610533"`
Nov 28 01:56:02.994 INFO [stderr] usermod: no changes
Nov 28 01:56:03.025 INFO [stderr]     Checking red-black-tree v0.1.0 (/source)
Nov 28 01:56:03.317 INFO [stderr] warning: field is never used: `parent`
Nov 28 01:56:03.317 INFO [stderr]   --> src/lib.rs:36:5
Nov 28 01:56:03.317 INFO [stderr]    |
Nov 28 01:56:03.317 INFO [stderr] 36 |     parent: RefCell<Weak<RedBlackNode<T>>>,
Nov 28 01:56:03.317 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 01:56:03.317 INFO [stderr]    |
Nov 28 01:56:03.317 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 28 01:56:03.317 INFO [stderr] 
Nov 28 01:56:03.317 INFO [stderr] warning: field is never used: `red`
Nov 28 01:56:03.317 INFO [stderr]   --> src/lib.rs:39:5
Nov 28 01:56:03.317 INFO [stderr]    |
Nov 28 01:56:03.317 INFO [stderr] 39 |     red: bool,
Nov 28 01:56:03.317 INFO [stderr]    |     ^^^^^^^^^
Nov 28 01:56:03.317 INFO [stderr] 
Nov 28 01:56:03.317 INFO [stderr] warning: method is never used: `grandparent`
Nov 28 01:56:03.317 INFO [stderr]   --> src/lib.rs:96:5
Nov 28 01:56:03.317 INFO [stderr]    |
Nov 28 01:56:03.317 INFO [stderr] 96 |     fn grandparent(&self) -> Weak<RedBlackNode<T>> {
Nov 28 01:56:03.317 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 01:56:03.317 INFO [stderr] 
Nov 28 01:56:03.317 INFO [stderr] warning: method is never used: `uncle`
Nov 28 01:56:03.317 INFO [stderr]    --> src/lib.rs:106:5
Nov 28 01:56:03.317 INFO [stderr]     |
Nov 28 01:56:03.317 INFO [stderr] 106 |     fn uncle(&self) -> Weak<RedBlackNode<T>> {
Nov 28 01:56:03.317 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 01:56:03.317 INFO [stderr] 
Nov 28 01:56:03.360 INFO [stderr] warning: field is never used: `parent`
Nov 28 01:56:03.360 INFO [stderr]   --> src/lib.rs:36:5
Nov 28 01:56:03.360 INFO [stderr]    |
Nov 28 01:56:03.360 INFO [stderr] 36 |     parent: RefCell<Weak<RedBlackNode<T>>>,
Nov 28 01:56:03.360 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 01:56:03.360 INFO [stderr]    |
Nov 28 01:56:03.360 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 28 01:56:03.360 INFO [stderr] 
Nov 28 01:56:03.360 INFO [stderr] warning: field is never used: `red`
Nov 28 01:56:03.360 INFO [stderr]   --> src/lib.rs:39:5
Nov 28 01:56:03.360 INFO [stderr]    |
Nov 28 01:56:03.360 INFO [stderr] 39 |     red: bool,
Nov 28 01:56:03.360 INFO [stderr]    |     ^^^^^^^^^
Nov 28 01:56:03.360 INFO [stderr] 
Nov 28 01:56:03.360 INFO [stderr] warning: method is never used: `grandparent`
Nov 28 01:56:03.360 INFO [stderr]   --> src/lib.rs:96:5
Nov 28 01:56:03.360 INFO [stderr]    |
Nov 28 01:56:03.360 INFO [stderr] 96 |     fn grandparent(&self) -> Weak<RedBlackNode<T>> {
Nov 28 01:56:03.360 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 01:56:03.360 INFO [stderr] 
Nov 28 01:56:03.360 INFO [stderr] warning: method is never used: `uncle`
Nov 28 01:56:03.360 INFO [stderr]    --> src/lib.rs:106:5
Nov 28 01:56:03.360 INFO [stderr]     |
Nov 28 01:56:03.360 INFO [stderr] 106 |     fn uncle(&self) -> Weak<RedBlackNode<T>> {
Nov 28 01:56:03.360 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 01:56:03.360 INFO [stderr] 
Nov 28 01:56:03.718 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
Nov 28 01:56:03.718 INFO [stderr] su: No module specific data is present
Nov 28 01:56:04.098 INFO running `"docker" "inspect" "1ed6288949bd8156eac63b55864138975a46de6fbe7cd8431fe5823320610533"`
Nov 28 01:56:04.254 INFO running `"docker" "rm" "-f" "1ed6288949bd8156eac63b55864138975a46de6fbe7cd8431fe5823320610533"`
Nov 28 01:56:04.513 INFO [stdout] 1ed6288949bd8156eac63b55864138975a46de6fbe7cd8431fe5823320610533