[INFO] updating cached repository yui-knk/type_lang
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/yui-knk/type_lang
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/yui-knk/type_lang" "work/ex/clippy-test-run/sources/stable/gh/yui-knk/type_lang"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/yui-knk/type_lang'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/yui-knk/type_lang" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/yui-knk/type_lang"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/yui-knk/type_lang'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 99b117325ecc2de0f54cbcca80f3128799d32555
[INFO] sha for GitHub repo yui-knk/type_lang: 99b117325ecc2de0f54cbcca80f3128799d32555
[INFO] validating manifest of yui-knk/type_lang 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 yui-knk/type_lang 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 yui-knk/type_lang
[INFO] finished frobbing yui-knk/type_lang
[INFO] frobbed toml for yui-knk/type_lang written to work/ex/clippy-test-run/sources/stable/gh/yui-knk/type_lang/Cargo.toml
[INFO] started frobbing yui-knk/type_lang
[INFO] finished frobbing yui-knk/type_lang
[INFO] frobbed toml for yui-knk/type_lang written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/yui-knk/type_lang/Cargo.toml
[INFO] crate yui-knk/type_lang 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 yui-knk/type_lang against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-3/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/yui-knk/type_lang:/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] f1c2cbe0b0f1bfe93523df9120c5622da5bf149785658524e14a7ebdb396e116
[INFO] running `"docker" "start" "-a" "f1c2cbe0b0f1bfe93523df9120c5622da5bf149785658524e14a7ebdb396e116"`
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking itertools v0.7.8
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking type_lang v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lexer.rs:28:13
[INFO] [stderr]    |
[INFO] [stderr] 28 |             source: source,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^ help: replace it with: `source`
[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/lexer.rs:28:13
[INFO] [stderr]    |
[INFO] [stderr] 28 |             source: source,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^ help: replace it with: `source`
[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/type_check.rs:150:25
[INFO] [stderr]     |
[INFO] [stderr] 150 | /                         return Err(Error::TypeMismatch(format!(
[INFO] [stderr] 151 | |                             "Argument type mismatch. expected: {:?}, actual: {:?}", ty1.kind, arg_type.kind)));
[INFO] [stderr]     | |_______________________________________________________________________________________________________________^
[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] help: remove `return` as shown
[INFO] [stderr]     |
[INFO] [stderr] 150 |                         Err(Error::TypeMismatch(format!(
[INFO] [stderr] 151 |                             "Argument type mismatch. expected: {:?}, actual: {:?}", ty1.kind, arg_type.kind)))
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/type_check.rs:330:25
[INFO] [stderr]     |
[INFO] [stderr] 330 | /                         return Err(Error::TypeMismatch(format!(
[INFO] [stderr] 331 | |                             "Domain/Result type mismatch. domain: {:?}, result: {:?}", ty1.kind, ty2.kind)));
[INFO] [stderr]     | |_____________________________________________________________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]     |
[INFO] [stderr] 330 |                         Err(Error::TypeMismatch(format!(
[INFO] [stderr] 331 |                             "Domain/Result type mismatch. domain: {:?}, result: {:?}", ty1.kind, ty2.kind)))
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/type_check.rs:358:25
[INFO] [stderr]     |
[INFO] [stderr] 358 | /                         return Err(Error::TypeMismatch(format!(
[INFO] [stderr] 359 | |                             "Left/Right type mismatch. left: {:?}, right: {:?}", left.kind, right.kind)));
[INFO] [stderr]     | |__________________________________________________________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]     |
[INFO] [stderr] 358 |                         Err(Error::TypeMismatch(format!(
[INFO] [stderr] 359 |                             "Left/Right type mismatch. left: {:?}, right: {:?}", left.kind, right.kind)))
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/type_check.rs:150:25
[INFO] [stderr]     |
[INFO] [stderr] 150 | /                         return Err(Error::TypeMismatch(format!(
[INFO] [stderr] 151 | |                             "Argument type mismatch. expected: {:?}, actual: {:?}", ty1.kind, arg_type.kind)));
[INFO] [stderr]     | |_______________________________________________________________________________________________________________^
[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] help: remove `return` as shown
[INFO] [stderr]     |
[INFO] [stderr] 150 |                         Err(Error::TypeMismatch(format!(
[INFO] [stderr] 151 |                             "Argument type mismatch. expected: {:?}, actual: {:?}", ty1.kind, arg_type.kind)))
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/type_check.rs:330:25
[INFO] [stderr]     |
[INFO] [stderr] 330 | /                         return Err(Error::TypeMismatch(format!(
[INFO] [stderr] 331 | |                             "Domain/Result type mismatch. domain: {:?}, result: {:?}", ty1.kind, ty2.kind)));
[INFO] [stderr]     | |_____________________________________________________________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]     |
[INFO] [stderr] 330 |                         Err(Error::TypeMismatch(format!(
[INFO] [stderr] 331 |                             "Domain/Result type mismatch. domain: {:?}, result: {:?}", ty1.kind, ty2.kind)))
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/type_check.rs:358:25
[INFO] [stderr]     |
[INFO] [stderr] 358 | /                         return Err(Error::TypeMismatch(format!(
[INFO] [stderr] 359 | |                             "Left/Right type mismatch. left: {:?}, right: {:?}", left.kind, right.kind)));
[INFO] [stderr]     | |__________________________________________________________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]     |
[INFO] [stderr] 358 |                         Err(Error::TypeMismatch(format!(
[INFO] [stderr] 359 |                             "Left/Right type mismatch. left: {:?}, right: {:?}", left.kind, right.kind)))
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider adding a `Default` implementation for `eval::Evaluator`
[INFO] [stderr]   --> src/eval.rs:68:5
[INFO] [stderr]    |
[INFO] [stderr] 68 | /     pub fn new() -> Evaluator {
[INFO] [stderr] 69 | |         Evaluator { env: Env::new() }
[INFO] [stderr] 70 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_without_default)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 67 | impl Default for eval::Evaluator {
[INFO] [stderr] 68 |     fn default() -> Self {
[INFO] [stderr] 69 |         Self::new()
[INFO] [stderr] 70 |     }
[INFO] [stderr] 71 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: methods called `into_*` usually take self by value; consider choosing a less ambiguous name
[INFO] [stderr]   --> src/eval.rs:82:19
[INFO] [stderr]    |
[INFO] [stderr] 82 |     fn into_value(&self, node: Node) -> Result<Value, Error> {
[INFO] [stderr]    |                   ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::wrong_self_convention)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#wrong_self_convention
[INFO] [stderr] 
[INFO] [stderr] warning: methods called `into_*` usually take self by value; consider choosing a less ambiguous name
[INFO] [stderr]    --> src/eval.rs:118:23
[INFO] [stderr]     |
[INFO] [stderr] 118 |     fn into_nat_value(&self, node: &Node, i: u32) -> Result<Value, Error> {
[INFO] [stderr]     |                       ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#wrong_self_convention
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `node::Fields`
[INFO] [stderr]   --> src/node.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | /     pub fn new() -> Fields {
[INFO] [stderr] 17 | |         Fields { elements: Vec::new() }
[INFO] [stderr] 18 | |     }
[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] 11 | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use `&Box<T>`. Consider using just `&T`
[INFO] [stderr]   --> src/node.rs:28:42
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn get(&self, k: &str) -> Option<&Box<Node>>
[INFO] [stderr]    |                                          ^^^^^^^^^^ help: try: `&Node`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::borrowed_box)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#borrowed_box
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `node::Cases`
[INFO] [stderr]   --> src/node.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 | /     pub fn new() -> Cases {
[INFO] [stderr] 46 | |         Cases { elements: Vec::new() }
[INFO] [stderr] 47 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[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] 40 | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: the variable `count` is used as a loop counter. Consider using `for (count, item) in fields.enumerate()` or similar iterators
[INFO] [stderr]    --> src/node.rs:196:29
[INFO] [stderr]     |
[INFO] [stderr] 196 |         for (name, node) in fields {
[INFO] [stderr]     |                             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::explicit_counter_loop)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `ty::Fields`
[INFO] [stderr]   --> src/ty.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | /     pub fn new() -> Fields {
[INFO] [stderr] 13 | |         Fields { elements: Vec::new() }
[INFO] [stderr] 14 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[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] 7  | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use `&Box<T>`. Consider using just `&T`
[INFO] [stderr]   --> src/ty.rs:24:42
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn get(&self, k: &str) -> Option<&Box<Ty>>
[INFO] [stderr]    |                                          ^^^^^^^^ help: try: `&Ty`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#borrowed_box
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider adding a `Default` implementation for `type_check::TypeChecker`
[INFO] [stderr]   --> src/type_check.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 | /     pub fn new() -> TypeChecker {
[INFO] [stderr] 55 | |         TypeChecker { context: Context::new() }
[INFO] [stderr] 56 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 53 | impl Default for type_check::TypeChecker {
[INFO] [stderr] 54 |     fn default() -> Self {
[INFO] [stderr] 55 |         Self::new()
[INFO] [stderr] 56 |     }
[INFO] [stderr] 57 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `value::Fields`
[INFO] [stderr]   --> src/value.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | /     pub fn new() -> Fields {
[INFO] [stderr] 16 | |         Fields { elements: Vec::new() }
[INFO] [stderr] 17 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[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 `&Box<T>`. Consider using just `&T`
[INFO] [stderr]   --> src/value.rs:27:42
[INFO] [stderr]    |
[INFO] [stderr] 27 |     pub fn get(&self, k: &str) -> Option<&Box<Value>>
[INFO] [stderr]    |                                          ^^^^^^^^^^^ help: try: `&Value`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#borrowed_box
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider adding a `Default` implementation for `eval::Evaluator`
[INFO] [stderr]   --> src/eval.rs:68:5
[INFO] [stderr]    |
[INFO] [stderr] 68 | /     pub fn new() -> Evaluator {
[INFO] [stderr] 69 | |         Evaluator { env: Env::new() }
[INFO] [stderr] 70 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_without_default)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 67 | impl Default for eval::Evaluator {
[INFO] [stderr] 68 |     fn default() -> Self {
[INFO] [stderr] 69 |         Self::new()
[INFO] [stderr] 70 |     }
[INFO] [stderr] 71 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: methods called `into_*` usually take self by value; consider choosing a less ambiguous name
[INFO] [stderr]   --> src/eval.rs:82:19
[INFO] [stderr]    |
[INFO] [stderr] 82 |     fn into_value(&self, node: Node) -> Result<Value, Error> {
[INFO] [stderr]    |                   ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::wrong_self_convention)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#wrong_self_convention
[INFO] [stderr] 
[INFO] [stderr] warning: methods called `into_*` usually take self by value; consider choosing a less ambiguous name
[INFO] [stderr]    --> src/eval.rs:118:23
[INFO] [stderr]     |
[INFO] [stderr] 118 |     fn into_nat_value(&self, node: &Node, i: u32) -> Result<Value, Error> {
[INFO] [stderr]     |                       ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#wrong_self_convention
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `node::Fields`
[INFO] [stderr]   --> src/node.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | /     pub fn new() -> Fields {
[INFO] [stderr] 17 | |         Fields { elements: Vec::new() }
[INFO] [stderr] 18 | |     }
[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] 11 | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use `&Box<T>`. Consider using just `&T`
[INFO] [stderr]   --> src/node.rs:28:42
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn get(&self, k: &str) -> Option<&Box<Node>>
[INFO] [stderr]    |                                          ^^^^^^^^^^ help: try: `&Node`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::borrowed_box)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#borrowed_box
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `node::Cases`
[INFO] [stderr]   --> src/node.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 | /     pub fn new() -> Cases {
[INFO] [stderr] 46 | |         Cases { elements: Vec::new() }
[INFO] [stderr] 47 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[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] 40 | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: the variable `count` is used as a loop counter. Consider using `for (count, item) in fields.enumerate()` or similar iterators
[INFO] [stderr]    --> src/node.rs:196:29
[INFO] [stderr]     |
[INFO] [stderr] 196 |         for (name, node) in fields {
[INFO] [stderr]     |                             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::explicit_counter_loop)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `ty::Fields`
[INFO] [stderr]   --> src/ty.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | /     pub fn new() -> Fields {
[INFO] [stderr] 13 | |         Fields { elements: Vec::new() }
[INFO] [stderr] 14 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[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] 7  | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use `&Box<T>`. Consider using just `&T`
[INFO] [stderr]   --> src/ty.rs:24:42
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn get(&self, k: &str) -> Option<&Box<Ty>>
[INFO] [stderr]    |                                          ^^^^^^^^ help: try: `&Ty`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#borrowed_box
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider adding a `Default` implementation for `type_check::TypeChecker`
[INFO] [stderr]   --> src/type_check.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 | /     pub fn new() -> TypeChecker {
[INFO] [stderr] 55 | |         TypeChecker { context: Context::new() }
[INFO] [stderr] 56 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 53 | impl Default for type_check::TypeChecker {
[INFO] [stderr] 54 |     fn default() -> Self {
[INFO] [stderr] 55 |         Self::new()
[INFO] [stderr] 56 |     }
[INFO] [stderr] 57 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `value::Fields`
[INFO] [stderr]   --> src/value.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | /     pub fn new() -> Fields {
[INFO] [stderr] 16 | |         Fields { elements: Vec::new() }
[INFO] [stderr] 17 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[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 `&Box<T>`. Consider using just `&T`
[INFO] [stderr]   --> src/value.rs:27:42
[INFO] [stderr]    |
[INFO] [stderr] 27 |     pub fn get(&self, k: &str) -> Option<&Box<Value>>
[INFO] [stderr]    |                                          ^^^^^^^^^^^ help: try: `&Value`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#borrowed_box
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.79s
[INFO] running `"docker" "inspect" "f1c2cbe0b0f1bfe93523df9120c5622da5bf149785658524e14a7ebdb396e116"`
[INFO] running `"docker" "rm" "-f" "f1c2cbe0b0f1bfe93523df9120c5622da5bf149785658524e14a7ebdb396e116"`
[INFO] [stdout] f1c2cbe0b0f1bfe93523df9120c5622da5bf149785658524e14a7ebdb396e116