[INFO] crate prefix-tree 0.1.0 is already in cache
[INFO] extracting crate prefix-tree 0.1.0 into work/ex/clippy-test-run/sources/stable/reg/prefix-tree/0.1.0
[INFO] extracting crate prefix-tree 0.1.0 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/prefix-tree/0.1.0
[INFO] validating manifest of prefix-tree-0.1.0 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 prefix-tree-0.1.0 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 prefix-tree-0.1.0
[INFO] finished frobbing prefix-tree-0.1.0
[INFO] frobbed toml for prefix-tree-0.1.0 written to work/ex/clippy-test-run/sources/stable/reg/prefix-tree/0.1.0/Cargo.toml
[INFO] started frobbing prefix-tree-0.1.0
[INFO] finished frobbing prefix-tree-0.1.0
[INFO] frobbed toml for prefix-tree-0.1.0 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/prefix-tree/0.1.0/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 prefix-tree-0.1.0 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-1/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/prefix-tree/0.1.0:/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] 9ccad40a9698609d1229b20a0e28964771fac67ec2e7c11756d5467ea3ccc0b6
[INFO] running `"docker" "start" "-a" "9ccad40a9698609d1229b20a0e28964771fac67ec2e7c11756d5467ea3ccc0b6"`
[INFO] [stderr]     Checking prefix-tree v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: this .into_iter() call is equivalent to .iter() and will not move the slice
[INFO] [stderr]   --> src/lib.rs:24:33
[INFO] [stderr]    |
[INFO] [stderr] 24 |             .zip(other.as_ref().into_iter())
[INFO] [stderr]    |                                 ^^^^^^^^^ help: call directly: `iter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::into_iter_on_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `Tree<T>`
[INFO] [stderr]   --> src/lib.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 76 | /     pub fn new() -> Tree<T> {
[INFO] [stderr] 77 | |         Tree {
[INFO] [stderr] 78 | |             root: None,
[INFO] [stderr] 79 | |         }
[INFO] [stderr] 80 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_without_default_derive)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 71 | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: this .into_iter() call is equivalent to .iter() and will not move the slice
[INFO] [stderr]   --> src/lib.rs:24:33
[INFO] [stderr]    |
[INFO] [stderr] 24 |             .zip(other.as_ref().into_iter())
[INFO] [stderr]    |                                 ^^^^^^^^^ help: call directly: `iter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::into_iter_on_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `Tree<T>`
[INFO] [stderr]   --> src/lib.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 76 | /     pub fn new() -> Tree<T> {
[INFO] [stderr] 77 | |         Tree {
[INFO] [stderr] 78 | |             root: None,
[INFO] [stderr] 79 | |         }
[INFO] [stderr] 80 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_without_default_derive)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 71 | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: use of a blacklisted/placeholder name `foo`
[INFO] [stderr]    --> src/lib.rs:185:13
[INFO] [stderr]     |
[INFO] [stderr] 185 |         let foo = t.root.as_ref().unwrap();
[INFO] [stderr]     |             ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::blacklisted_name)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#blacklisted_name
[INFO] [stderr] 
[INFO] [stderr] warning: use of a blacklisted/placeholder name `bar`
[INFO] [stderr]    --> src/lib.rs:189:13
[INFO] [stderr]     |
[INFO] [stderr] 189 |         let bar = foo.child.as_ref().unwrap();
[INFO] [stderr]     |             ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#blacklisted_name
[INFO] [stderr] 
[INFO] [stderr] warning: use of a blacklisted/placeholder name `baz`
[INFO] [stderr]    --> src/lib.rs:193:13
[INFO] [stderr]     |
[INFO] [stderr] 193 |         let baz = bar.child.as_ref().unwrap();
[INFO] [stderr]     |             ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#blacklisted_name
[INFO] [stderr] 
[INFO] [stderr] warning: use of a blacklisted/placeholder name `foo`
[INFO] [stderr]    --> src/lib.rs:206:13
[INFO] [stderr]     |
[INFO] [stderr] 206 |         let foo = t.root.as_ref().unwrap();
[INFO] [stderr]     |             ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#blacklisted_name
[INFO] [stderr] 
[INFO] [stderr] warning: use of a blacklisted/placeholder name `bar`
[INFO] [stderr]    --> src/lib.rs:210:13
[INFO] [stderr]     |
[INFO] [stderr] 210 |         let bar = foo.sibling.as_ref().unwrap();
[INFO] [stderr]     |             ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#blacklisted_name
[INFO] [stderr] 
[INFO] [stderr] warning: use of a blacklisted/placeholder name `quux`
[INFO] [stderr]    --> src/lib.rs:214:13
[INFO] [stderr]     |
[INFO] [stderr] 214 |         let quux = bar.sibling.as_ref().unwrap();
[INFO] [stderr]     |             ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#blacklisted_name
[INFO] [stderr] 
[INFO] [stderr] warning: use of a blacklisted/placeholder name `foo`
[INFO] [stderr]    --> src/lib.rs:230:13
[INFO] [stderr]     |
[INFO] [stderr] 230 |         let foo = root.child.as_ref().unwrap();
[INFO] [stderr]     |             ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#blacklisted_name
[INFO] [stderr] 
[INFO] [stderr] warning: use of a blacklisted/placeholder name `bar`
[INFO] [stderr]    --> src/lib.rs:234:13
[INFO] [stderr]     |
[INFO] [stderr] 234 |         let bar = foo.sibling.as_ref().unwrap();
[INFO] [stderr]     |             ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#blacklisted_name
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.07s
[INFO] running `"docker" "inspect" "9ccad40a9698609d1229b20a0e28964771fac67ec2e7c11756d5467ea3ccc0b6"`
[INFO] running `"docker" "rm" "-f" "9ccad40a9698609d1229b20a0e28964771fac67ec2e7c11756d5467ea3ccc0b6"`
[INFO] [stdout] 9ccad40a9698609d1229b20a0e28964771fac67ec2e7c11756d5467ea3ccc0b6