[INFO] updating cached repository ypkulkar/binary_tree
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ypkulkar/binary_tree
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ypkulkar/binary_tree" "work/ex/clippy-test-run/sources/stable/gh/ypkulkar/binary_tree"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/ypkulkar/binary_tree'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ypkulkar/binary_tree" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/ypkulkar/binary_tree"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/ypkulkar/binary_tree'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0e59404a4b72dfdc43ae8fbb35bc8daf2a026e84
[INFO] sha for GitHub repo ypkulkar/binary_tree: 0e59404a4b72dfdc43ae8fbb35bc8daf2a026e84
[INFO] validating manifest of ypkulkar/binary_tree 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 ypkulkar/binary_tree 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 ypkulkar/binary_tree
[INFO] finished frobbing ypkulkar/binary_tree
[INFO] frobbed toml for ypkulkar/binary_tree written to work/ex/clippy-test-run/sources/stable/gh/ypkulkar/binary_tree/Cargo.toml
[INFO] started frobbing ypkulkar/binary_tree
[INFO] finished frobbing ypkulkar/binary_tree
[INFO] frobbed toml for ypkulkar/binary_tree written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/ypkulkar/binary_tree/Cargo.toml
[INFO] crate ypkulkar/binary_tree has a lockfile. skipping
[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 ypkulkar/binary_tree 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/gh/ypkulkar/binary_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" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] f033e0399421c628171e75be11b5111f08f68ad18dcb9daf0b86ec48abd1939a
[INFO] running `"docker" "start" "-a" "f033e0399421c628171e75be11b5111f08f68ad18dcb9daf0b86ec48abd1939a"`
[INFO] [stderr]     Checking your v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lib.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |         key :key,
[INFO] [stderr]    |         ^^^^^^^^ help: replace it with: `key`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lib.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |         key :key,
[INFO] [stderr]    |         ^^^^^^^^ help: replace it with: `key`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:31:86
[INFO] [stderr]    |
[INFO] [stderr] 31 |                          None        => {self.right = Some(Box::new(Node::new(key)));return true;},
[INFO] [stderr]    |                                                                                      ^^^^^^^^^^^^ help: remove `return` as shown: `true`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:37:85
[INFO] [stderr]    |
[INFO] [stderr] 37 |                          None        => {self.left = Some(Box::new(Node::new(key)));return true;},
[INFO] [stderr]    |                                                                                     ^^^^^^^^^^^^ help: remove `return` as shown: `true`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:41:14
[INFO] [stderr]    |
[INFO] [stderr] 41 |              return false;
[INFO] [stderr]    |              ^^^^^^^^^^^^^ help: remove `return` as shown: `false`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:128:71
[INFO] [stderr]     |
[INFO] [stderr] 128 |                 None  => {self.node = Some(Box::new(Node::new(key))); return true;},
[INFO] [stderr]     |                                                                       ^^^^^^^^^^^^ help: remove `return` as shown: `true`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:136:26
[INFO] [stderr]     |
[INFO] [stderr] 136 |                 None => {return false;},
[INFO] [stderr]     |                          ^^^^^^^^^^^^^ help: remove `return` as shown: `false`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:147:9
[INFO] [stderr]     |
[INFO] [stderr] 147 |         return v;
[INFO] [stderr]     |         ^^^^^^^^^ help: remove `return` as shown: `v`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:157:9
[INFO] [stderr]     |
[INFO] [stderr] 157 |         return v;
[INFO] [stderr]     |         ^^^^^^^^^ help: remove `return` as shown: `v`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:167:9
[INFO] [stderr]     |
[INFO] [stderr] 167 |         return v;
[INFO] [stderr]     |         ^^^^^^^^^ help: remove `return` as shown: `v`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:31:86
[INFO] [stderr]    |
[INFO] [stderr] 31 |                          None        => {self.right = Some(Box::new(Node::new(key)));return true;},
[INFO] [stderr]    |                                                                                      ^^^^^^^^^^^^ help: remove `return` as shown: `true`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:37:85
[INFO] [stderr]    |
[INFO] [stderr] 37 |                          None        => {self.left = Some(Box::new(Node::new(key)));return true;},
[INFO] [stderr]    |                                                                                     ^^^^^^^^^^^^ help: remove `return` as shown: `true`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:41:14
[INFO] [stderr]    |
[INFO] [stderr] 41 |              return false;
[INFO] [stderr]    |              ^^^^^^^^^^^^^ help: remove `return` as shown: `false`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:128:71
[INFO] [stderr]     |
[INFO] [stderr] 128 |                 None  => {self.node = Some(Box::new(Node::new(key))); return true;},
[INFO] [stderr]     |                                                                       ^^^^^^^^^^^^ help: remove `return` as shown: `true`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:136:26
[INFO] [stderr]     |
[INFO] [stderr] 136 |                 None => {return false;},
[INFO] [stderr]     |                          ^^^^^^^^^^^^^ help: remove `return` as shown: `false`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:147:9
[INFO] [stderr]     |
[INFO] [stderr] 147 |         return v;
[INFO] [stderr]     |         ^^^^^^^^^ help: remove `return` as shown: `v`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:157:9
[INFO] [stderr]     |
[INFO] [stderr] 157 |         return v;
[INFO] [stderr]     |         ^^^^^^^^^ help: remove `return` as shown: `v`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:167:9
[INFO] [stderr]     |
[INFO] [stderr] 167 |         return v;
[INFO] [stderr]     |         ^^^^^^^^^ help: remove `return` as shown: `v`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/lib.rs:69:25
[INFO] [stderr]    |
[INFO] [stderr] 69 | /                         match self.left {
[INFO] [stderr] 70 | |                             Some(ref n) => {n.preorder(v);},
[INFO] [stderr] 71 | |                             None => {},
[INFO] [stderr] 72 | |                         }
[INFO] [stderr]    | |_________________________^ help: try this: `if let Some(ref n) = self.left {n.preorder(v);}`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/lib.rs:74:25
[INFO] [stderr]    |
[INFO] [stderr] 74 | /                         match self.right {
[INFO] [stderr] 75 | |                             Some(ref n) => {n.preorder(v);}, 
[INFO] [stderr] 76 | |                             None => {},
[INFO] [stderr] 77 | |                         }
[INFO] [stderr]    | |_________________________^ help: try this: `if let Some(ref n) = self.right {n.preorder(v);}`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/lib.rs:83:28
[INFO] [stderr]    |
[INFO] [stderr] 83 | /                            match self.left {
[INFO] [stderr] 84 | |                                 Some(ref n) => {n.inorder(v);},
[INFO] [stderr] 85 | |                                 None => {},
[INFO] [stderr] 86 | |                             }
[INFO] [stderr]    | |_____________________________^ help: try this: `if let Some(ref n) = self.left {n.inorder(v);}`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/lib.rs:90:29
[INFO] [stderr]    |
[INFO] [stderr] 90 | /                             match self.right {
[INFO] [stderr] 91 | |                                 Some(ref n) => {n.inorder(v);}, 
[INFO] [stderr] 92 | |                                 None => {},
[INFO] [stderr] 93 | |                             }
[INFO] [stderr]    | |_____________________________^ help: try this: `if let Some(ref n) = self.right {n.inorder(v);}`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/lib.rs:102:25
[INFO] [stderr]     |
[INFO] [stderr] 102 | /                         match self.left {
[INFO] [stderr] 103 | |                             Some(ref n) => {n.postorder(v);},
[INFO] [stderr] 104 | |                             None => {},
[INFO] [stderr] 105 | |                         }
[INFO] [stderr]     | |_________________________^ help: try this: `if let Some(ref n) = self.left {n.postorder(v);}`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/lib.rs:107:25
[INFO] [stderr]     |
[INFO] [stderr] 107 | /                         match self.right {
[INFO] [stderr] 108 | |                             Some(ref n) => {n.postorder(v);}, 
[INFO] [stderr] 109 | |                             None => {},
[INFO] [stderr] 110 | |                         }
[INFO] [stderr]     | |_________________________^ help: try this: `if let Some(ref n) = self.right {n.postorder(v);}`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `Tree<T>`
[INFO] [stderr]    --> src/lib.rs:118:5
[INFO] [stderr]     |
[INFO] [stderr] 118 | /     pub fn new() -> Self {
[INFO] [stderr] 119 | |         Tree{
[INFO] [stderr] 120 | |         node: None,     }
[INFO] [stderr] 121 | |         }
[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] 10  | #[derive(Default)]
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/lib.rs:69:25
[INFO] [stderr]    |
[INFO] [stderr] 69 | /                         match self.left {
[INFO] [stderr] 70 | |                             Some(ref n) => {n.preorder(v);},
[INFO] [stderr] 71 | |                             None => {},
[INFO] [stderr] 72 | |                         }
[INFO] [stderr]    | |_________________________^ help: try this: `if let Some(ref n) = self.left {n.preorder(v);}`
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/lib.rs:143:14
[INFO] [stderr]     |
[INFO] [stderr] 143 | /              match self.node {
[INFO] [stderr] 144 | |                               Some(ref n) => {n.preorder(&mut v);},
[INFO] [stderr] 145 | |                                 None => {},
[INFO] [stderr] 146 | |                            }
[INFO] [stderr]     | |____________________________^ help: try this: `if let Some(ref n) = self.node {n.preorder(&mut v);}`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/lib.rs:153:14
[INFO] [stderr]     |
[INFO] [stderr] 153 | /              match self.node {
[INFO] [stderr] 154 | |                               Some(ref n) => {n.inorder(&mut v);},
[INFO] [stderr] 155 | |                                 None => {},
[INFO] [stderr] 156 | |                            }
[INFO] [stderr]     | |____________________________^ help: try this: `if let Some(ref n) = self.node {n.inorder(&mut v);}`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/lib.rs:163:14
[INFO] [stderr]     |
[INFO] [stderr] 163 | /              match self.node {
[INFO] [stderr] 164 | |                               Some(ref n) => {n.postorder(&mut v);},
[INFO] [stderr] 165 | |                                 None => {},
[INFO] [stderr] 166 | |                            }
[INFO] [stderr]     | |____________________________^ help: try this: `if let Some(ref n) = self.node {n.postorder(&mut v);}`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/lib.rs:74:25
[INFO] [stderr]    |
[INFO] [stderr] 74 | /                         match self.right {
[INFO] [stderr] 75 | |                             Some(ref n) => {n.preorder(v);}, 
[INFO] [stderr] 76 | |                             None => {},
[INFO] [stderr] 77 | |                         }
[INFO] [stderr]    | |_________________________^ help: try this: `if let Some(ref n) = self.right {n.preorder(v);}`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/lib.rs:83:28
[INFO] [stderr]    |
[INFO] [stderr] 83 | /                            match self.left {
[INFO] [stderr] 84 | |                                 Some(ref n) => {n.inorder(v);},
[INFO] [stderr] 85 | |                                 None => {},
[INFO] [stderr] 86 | |                             }
[INFO] [stderr]    | |_____________________________^ help: try this: `if let Some(ref n) = self.left {n.inorder(v);}`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/lib.rs:90:29
[INFO] [stderr]    |
[INFO] [stderr] 90 | /                             match self.right {
[INFO] [stderr] 91 | |                                 Some(ref n) => {n.inorder(v);}, 
[INFO] [stderr] 92 | |                                 None => {},
[INFO] [stderr] 93 | |                             }
[INFO] [stderr]    | |_____________________________^ help: try this: `if let Some(ref n) = self.right {n.inorder(v);}`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/lib.rs:102:25
[INFO] [stderr]     |
[INFO] [stderr] 102 | /                         match self.left {
[INFO] [stderr] 103 | |                             Some(ref n) => {n.postorder(v);},
[INFO] [stderr] 104 | |                             None => {},
[INFO] [stderr] 105 | |                         }
[INFO] [stderr]     | |_________________________^ help: try this: `if let Some(ref n) = self.left {n.postorder(v);}`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/lib.rs:107:25
[INFO] [stderr]     |
[INFO] [stderr] 107 | /                         match self.right {
[INFO] [stderr] 108 | |                             Some(ref n) => {n.postorder(v);}, 
[INFO] [stderr] 109 | |                             None => {},
[INFO] [stderr] 110 | |                         }
[INFO] [stderr]     | |_________________________^ help: try this: `if let Some(ref n) = self.right {n.postorder(v);}`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `Tree<T>`
[INFO] [stderr]    --> src/lib.rs:118:5
[INFO] [stderr]     |
[INFO] [stderr] 118 | /     pub fn new() -> Self {
[INFO] [stderr] 119 | |         Tree{
[INFO] [stderr] 120 | |         node: None,     }
[INFO] [stderr] 121 | |         }
[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] 10  | #[derive(Default)]
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/lib.rs:143:14
[INFO] [stderr]     |
[INFO] [stderr] 143 | /              match self.node {
[INFO] [stderr] 144 | |                               Some(ref n) => {n.preorder(&mut v);},
[INFO] [stderr] 145 | |                                 None => {},
[INFO] [stderr] 146 | |                            }
[INFO] [stderr]     | |____________________________^ help: try this: `if let Some(ref n) = self.node {n.preorder(&mut v);}`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/lib.rs:153:14
[INFO] [stderr]     |
[INFO] [stderr] 153 | /              match self.node {
[INFO] [stderr] 154 | |                               Some(ref n) => {n.inorder(&mut v);},
[INFO] [stderr] 155 | |                                 None => {},
[INFO] [stderr] 156 | |                            }
[INFO] [stderr]     | |____________________________^ help: try this: `if let Some(ref n) = self.node {n.inorder(&mut v);}`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/lib.rs:163:14
[INFO] [stderr]     |
[INFO] [stderr] 163 | /              match self.node {
[INFO] [stderr] 164 | |                               Some(ref n) => {n.postorder(&mut v);},
[INFO] [stderr] 165 | |                                 None => {},
[INFO] [stderr] 166 | |                            }
[INFO] [stderr]     | |____________________________^ help: try this: `if let Some(ref n) = self.node {n.postorder(&mut v);}`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `"docker" "inspect" "f033e0399421c628171e75be11b5111f08f68ad18dcb9daf0b86ec48abd1939a"`
[INFO] running `"docker" "rm" "-f" "f033e0399421c628171e75be11b5111f08f68ad18dcb9daf0b86ec48abd1939a"`
[INFO] [stdout] f033e0399421c628171e75be11b5111f08f68ad18dcb9daf0b86ec48abd1939a