[INFO] crate slab_tree 0.1.2 is already in cache
[INFO] extracting crate slab_tree 0.1.2 into work/ex/clippy-test-run/sources/stable/reg/slab_tree/0.1.2
[INFO] extracting crate slab_tree 0.1.2 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/slab_tree/0.1.2
[INFO] validating manifest of slab_tree-0.1.2 on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of slab_tree-0.1.2 on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing slab_tree-0.1.2
[INFO] finished frobbing slab_tree-0.1.2
[INFO] frobbed toml for slab_tree-0.1.2 written to work/ex/clippy-test-run/sources/stable/reg/slab_tree/0.1.2/Cargo.toml
[INFO] started frobbing slab_tree-0.1.2
[INFO] finished frobbing slab_tree-0.1.2
[INFO] frobbed toml for slab_tree-0.1.2 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/slab_tree/0.1.2/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting slab_tree-0.1.2 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-6/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/slab_tree/0.1.2:/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" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 604f9dcf734378d5902d128a64ca86f88c3bf92e65f0eb9d35d8f434b1263ea5
[INFO] running `"docker" "start" "-a" "604f9dcf734378d5902d128a64ca86f88c3bf92e65f0eb9d35d8f434b1263ea5"`
[INFO] [stderr]     Checking slab_tree v0.1.2 (/opt/crater/workdir)
[INFO] [stderr] warning: the function has a cyclomatic complexity of 31
[INFO] [stderr]    --> src/slab.rs:249:5
[INFO] [stderr]     |
[INFO] [stderr] 249 | /     fn remove_multiple() {
[INFO] [stderr] 250 | |         let mut slab = Slab::new(5);
[INFO] [stderr] 251 | |         let _six = slab.insert(6);
[INFO] [stderr] 252 | |         let seven = slab.insert(7);
[INFO] [stderr] ...   |
[INFO] [stderr] 350 | |         }
[INFO] [stderr] 351 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::cyclomatic_complexity)] on by default
[INFO] [stderr]     = help: you could split it up into multiple smaller functions
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cyclomatic_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: the function has a cyclomatic complexity of 29
[INFO] [stderr]    --> src/node/node_mut.rs:300:5
[INFO] [stderr]     |
[INFO] [stderr] 300 | /     fn append_two_children_present() {
[INFO] [stderr] 301 | |         let mut tree = Tree::new(1);
[INFO] [stderr] 302 | |         let root_id = tree.root_id();
[INFO] [stderr] 303 | |
[INFO] [stderr] ...   |
[INFO] [stderr] 368 | |         assert_eq!(new_node.data(), &2);
[INFO] [stderr] 369 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = help: you could split it up into multiple smaller functions
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cyclomatic_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: the function has a cyclomatic complexity of 29
[INFO] [stderr]    --> src/node/node_mut.rs:457:5
[INFO] [stderr]     |
[INFO] [stderr] 457 | /     fn prepend_two_children_present() {
[INFO] [stderr] 458 | |         let mut tree = Tree::new(1);
[INFO] [stderr] 459 | |         let root_id = tree.root_id();
[INFO] [stderr] 460 | |
[INFO] [stderr] ...   |
[INFO] [stderr] 525 | |         assert_eq!(new_node_3.data(), &4);
[INFO] [stderr] 526 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = help: you could split it up into multiple smaller functions
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cyclomatic_complexity
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.29s
[INFO] running `"docker" "inspect" "604f9dcf734378d5902d128a64ca86f88c3bf92e65f0eb9d35d8f434b1263ea5"`
[INFO] running `"docker" "rm" "-f" "604f9dcf734378d5902d128a64ca86f88c3bf92e65f0eb9d35d8f434b1263ea5"`
[INFO] [stdout] 604f9dcf734378d5902d128a64ca86f88c3bf92e65f0eb9d35d8f434b1263ea5