[INFO] updating cached repository skodt/interpreter
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/skodt/interpreter
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/skodt/interpreter" "work/ex/clippy-test-run/sources/stable/gh/skodt/interpreter"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/skodt/interpreter'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/skodt/interpreter" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/skodt/interpreter"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/skodt/interpreter'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cade2f2557fc11ceb2437f4972b054729cddf800
[INFO] sha for GitHub repo skodt/interpreter: cade2f2557fc11ceb2437f4972b054729cddf800
[INFO] validating manifest of skodt/interpreter 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 skodt/interpreter 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 skodt/interpreter
[INFO] finished frobbing skodt/interpreter
[INFO] frobbed toml for skodt/interpreter written to work/ex/clippy-test-run/sources/stable/gh/skodt/interpreter/Cargo.toml
[INFO] started frobbing skodt/interpreter
[INFO] finished frobbing skodt/interpreter
[INFO] frobbed toml for skodt/interpreter written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/skodt/interpreter/Cargo.toml
[INFO] crate skodt/interpreter 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 skodt/interpreter against stable+rustflags=-Dclippy::into_iter_on_array for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-7/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/skodt/interpreter:/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 -Dclippy::into_iter_on_array" "-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] 9073250403a921fad900e0e262470c1e1583439deb439f3c15b86f2022c4e234
[INFO] running `"docker" "start" "-a" "9073250403a921fad900e0e262470c1e1583439deb439f3c15b86f2022c4e234"`
[INFO] [stderr]     Checking interpreter v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lexer.rs:77:13
[INFO] [stderr]    |
[INFO] [stderr] 77 |             input: input,
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `input`
[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/ast.rs:28:19
[INFO] [stderr]    |
[INFO] [stderr] 28 |         Integer { value: value }
[INFO] [stderr]    |                   ^^^^^^^^^^^^ help: replace it with: `value`
[INFO] [stderr]    |
[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/ast.rs:31:22
[INFO] [stderr]    |
[INFO] [stderr] 31 |         Identifier { name: name }
[INFO] [stderr]    |                      ^^^^^^^^^^ help: replace it with: `name`
[INFO] [stderr]    |
[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/ast.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |         LetIn { name: name, value: Box::new(value), body: Box::new(body) }
[INFO] [stderr]    |                 ^^^^^^^^^^ help: replace it with: `name`
[INFO] [stderr]    |
[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:77:13
[INFO] [stderr]    |
[INFO] [stderr] 77 |             input: input,
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `input`
[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/ast.rs:28:19
[INFO] [stderr]    |
[INFO] [stderr] 28 |         Integer { value: value }
[INFO] [stderr]    |                   ^^^^^^^^^^^^ help: replace it with: `value`
[INFO] [stderr]    |
[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/ast.rs:31:22
[INFO] [stderr]    |
[INFO] [stderr] 31 |         Identifier { name: name }
[INFO] [stderr]    |                      ^^^^^^^^^^ help: replace it with: `name`
[INFO] [stderr]    |
[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/ast.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |         LetIn { name: name, value: Box::new(value), body: Box::new(body) }
[INFO] [stderr]    |                 ^^^^^^^^^^ help: replace it with: `name`
[INFO] [stderr]    |
[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: All variants have the same prefix: `Read`
[INFO] [stderr]   --> src/lexer.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | / enum LexerState
[INFO] [stderr] 24 | | {
[INFO] [stderr] 25 | |     ReadInt,
[INFO] [stderr] 26 | |     ReadIdentifier,
[INFO] [stderr] ...  |
[INFO] [stderr] 34 | |     ReadEq,
[INFO] [stderr] 35 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::enum_variant_names)] on by default
[INFO] [stderr]    = help: remove the prefixes and use full paths to the variants instead of glob imports
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names
[INFO] [stderr] 
[INFO] [stderr] warning: All variants have the same prefix: `Read`
[INFO] [stderr]   --> src/lexer.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | / enum LexerState
[INFO] [stderr] 24 | | {
[INFO] [stderr] 25 | |     ReadInt,
[INFO] [stderr] 26 | |     ReadIdentifier,
[INFO] [stderr] ...  |
[INFO] [stderr] 34 | |     ReadEq,
[INFO] [stderr] 35 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::enum_variant_names)] on by default
[INFO] [stderr]    = help: remove the prefixes and use full paths to the variants instead of glob imports
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names
[INFO] [stderr] 
[INFO] [stderr] warning: explicit lifetimes given in parameter types where they could be elided (or replaced with `'_` if needed by type declaration)
[INFO] [stderr]   --> src/lexer.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 73 | /     pub fn new<'b>(input: std::str::Chars<'b>) -> Lexer<'b>
[INFO] [stderr] 74 | |     {
[INFO] [stderr] 75 | |         Lexer {
[INFO] [stderr] 76 | |             value: String::new(),
[INFO] [stderr] ...  |
[INFO] [stderr] 79 | |         }
[INFO] [stderr] 80 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_lifetimes)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
[INFO] [stderr] 
[INFO] [stderr] warning: this creates an owned instance just for comparison
[INFO] [stderr]    --> src/lexer.rs:119:34
[INFO] [stderr]     |
[INFO] [stderr] 119 |                 if self.value == "let".to_string() {
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^ help: try: `"let"`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::cmp_owned)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cmp_owned
[INFO] [stderr] 
[INFO] [stderr] warning: this creates an owned instance just for comparison
[INFO] [stderr]    --> src/lexer.rs:121:41
[INFO] [stderr]     |
[INFO] [stderr] 121 |                 } else if self.value == "in".to_string() {
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^ help: try: `"in"`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cmp_owned
[INFO] [stderr] 
[INFO] [stderr] warning: this loop could be written as a `while let` loop
[INFO] [stderr]    --> src/lexer.rs:214:9
[INFO] [stderr]     |
[INFO] [stderr] 214 | /         loop
[INFO] [stderr] 215 | |         {
[INFO] [stderr] 216 | |             match self.input.next() {
[INFO] [stderr] 217 | |                 Some (c) =>
[INFO] [stderr] ...   |
[INFO] [stderr] 223 | |             }
[INFO] [stderr] 224 | |         }
[INFO] [stderr]     | |_________^ help: try: `while let Some (c) = self.input.next() { .. }`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::while_let_loop)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_loop
[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/lexer.rs:218:21
[INFO] [stderr]     |
[INFO] [stderr] 218 | /                     match self.consume(c) {
[INFO] [stderr] 219 | |                         Some(token) => return Some(token),
[INFO] [stderr] 220 | |                         None => ()
[INFO] [stderr] 221 | |                     },
[INFO] [stderr]     | |_____________________^ help: try this: `if let Some(token) = self.consume(c) { return Some(token) }`
[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 don't need to add `&` to all patterns
[INFO] [stderr]    --> src/lexer.rs:252:9
[INFO] [stderr]     |
[INFO] [stderr] 252 | /         match self
[INFO] [stderr] 253 | |         {
[INFO] [stderr] 254 | |             &Integer(n) => write!(f, "INT({})", n),
[INFO] [stderr] 255 | |             &Identifier(ref s) => write!(f, "ID({})", s),
[INFO] [stderr] ...   |
[INFO] [stderr] 264 | |             &In => write!(f,"'in'"),
[INFO] [stderr] 265 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::match_ref_pats)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 252 |         match *self
[INFO] [stderr] 253 |         {
[INFO] [stderr] 254 |             Integer(n) => write!(f, "INT({})", n),
[INFO] [stderr] 255 |             Identifier(ref s) => write!(f, "ID({})", s),
[INFO] [stderr] 256 |             Add => write!(f, "ADD"),
[INFO] [stderr] 257 |             Sub => write!(f, "SUB"),
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: the `token @ _` pattern can be written as just `token`
[INFO] [stderr]   --> src/parser.rs:57:18
[INFO] [stderr]    |
[INFO] [stderr] 57 |             Some(ref token @ _) if token == expected => (),
[INFO] [stderr]    |                  ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: the `token @ _` pattern can be written as just `token`
[INFO] [stderr]   --> src/parser.rs:58:18
[INFO] [stderr]    |
[INFO] [stderr] 58 |             Some(token @ _) =>
[INFO] [stderr]    |                  ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/ast.rs:54:9
[INFO] [stderr]    |
[INFO] [stderr] 54 | /         match self
[INFO] [stderr] 55 | |         {
[INFO] [stderr] 56 | |             &Add => write!(f, "+"),
[INFO] [stderr] 57 | |             &Sub => write!(f, "-"),
[INFO] [stderr] 58 | |             &Mul => write!(f, "*"),
[INFO] [stderr] 59 | |             &Div => write!(f, "/"),
[INFO] [stderr] 60 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 54 |         match *self
[INFO] [stderr] 55 |         {
[INFO] [stderr] 56 |             Add => write!(f, "+"),
[INFO] [stderr] 57 |             Sub => write!(f, "-"),
[INFO] [stderr] 58 |             Mul => write!(f, "*"),
[INFO] [stderr] 59 |             Div => write!(f, "/"),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/ast.rs:68:9
[INFO] [stderr]    |
[INFO] [stderr] 68 | /         match self
[INFO] [stderr] 69 | |         {
[INFO] [stderr] 70 | |             &Integer { value: n } => write!(f, "{}", n),
[INFO] [stderr] 71 | |             &Identifier { name: ref s } => write!(f, "{}", s),
[INFO] [stderr] ...  |
[INFO] [stderr] 75 | |                 write!(f, "let {} = {} in {}", name, value, body),
[INFO] [stderr] 76 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 68 |         match *self
[INFO] [stderr] 69 |         {
[INFO] [stderr] 70 |             Integer { value: n } => write!(f, "{}", n),
[INFO] [stderr] 71 |             Identifier { name: ref s } => write!(f, "{}", s),
[INFO] [stderr] 72 |             Binop { ref operator, ref left, ref right } =>
[INFO] [stderr] 73 |                 write!(f, "({} {} {})", left, operator, right),
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/interpreter.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 | /         match expr
[INFO] [stderr] 22 | |         {
[INFO] [stderr] 23 | |             &Integer { value } => value,
[INFO] [stderr] 24 | |             &Identifier { ref name } =>
[INFO] [stderr] ...  |
[INFO] [stderr] 42 | |             },
[INFO] [stderr] 43 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 21 |         match *expr
[INFO] [stderr] 22 |         {
[INFO] [stderr] 23 |             Integer { value } => value,
[INFO] [stderr] 24 |             Identifier { ref name } =>
[INFO] [stderr] 25 |                 match self.environment.get(name)
[INFO] [stderr] 26 |                 {
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: explicit lifetimes given in parameter types where they could be elided (or replaced with `'_` if needed by type declaration)
[INFO] [stderr]   --> src/lexer.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 73 | /     pub fn new<'b>(input: std::str::Chars<'b>) -> Lexer<'b>
[INFO] [stderr] 74 | |     {
[INFO] [stderr] 75 | |         Lexer {
[INFO] [stderr] 76 | |             value: String::new(),
[INFO] [stderr] ...  |
[INFO] [stderr] 79 | |         }
[INFO] [stderr] 80 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_lifetimes)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
[INFO] [stderr] 
[INFO] [stderr] warning: this creates an owned instance just for comparison
[INFO] [stderr]    --> src/lexer.rs:119:34
[INFO] [stderr]     |
[INFO] [stderr] 119 |                 if self.value == "let".to_string() {
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^ help: try: `"let"`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::cmp_owned)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cmp_owned
[INFO] [stderr] 
[INFO] [stderr] warning: this creates an owned instance just for comparison
[INFO] [stderr]    --> src/lexer.rs:121:41
[INFO] [stderr]     |
[INFO] [stderr] 121 |                 } else if self.value == "in".to_string() {
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^ help: try: `"in"`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cmp_owned
[INFO] [stderr] 
[INFO] [stderr] warning: this loop could be written as a `while let` loop
[INFO] [stderr]    --> src/lexer.rs:214:9
[INFO] [stderr]     |
[INFO] [stderr] 214 | /         loop
[INFO] [stderr] 215 | |         {
[INFO] [stderr] 216 | |             match self.input.next() {
[INFO] [stderr] 217 | |                 Some (c) =>
[INFO] [stderr] ...   |
[INFO] [stderr] 223 | |             }
[INFO] [stderr] 224 | |         }
[INFO] [stderr]     | |_________^ help: try: `while let Some (c) = self.input.next() { .. }`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::while_let_loop)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_loop
[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/lexer.rs:218:21
[INFO] [stderr]     |
[INFO] [stderr] 218 | /                     match self.consume(c) {
[INFO] [stderr] 219 | |                         Some(token) => return Some(token),
[INFO] [stderr] 220 | |                         None => ()
[INFO] [stderr] 221 | |                     },
[INFO] [stderr]     | |_____________________^ help: try this: `if let Some(token) = self.consume(c) { return Some(token) }`
[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 don't need to add `&` to all patterns
[INFO] [stderr]    --> src/lexer.rs:252:9
[INFO] [stderr]     |
[INFO] [stderr] 252 | /         match self
[INFO] [stderr] 253 | |         {
[INFO] [stderr] 254 | |             &Integer(n) => write!(f, "INT({})", n),
[INFO] [stderr] 255 | |             &Identifier(ref s) => write!(f, "ID({})", s),
[INFO] [stderr] ...   |
[INFO] [stderr] 264 | |             &In => write!(f,"'in'"),
[INFO] [stderr] 265 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::match_ref_pats)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 252 |         match *self
[INFO] [stderr] 253 |         {
[INFO] [stderr] 254 |             Integer(n) => write!(f, "INT({})", n),
[INFO] [stderr] 255 |             Identifier(ref s) => write!(f, "ID({})", s),
[INFO] [stderr] 256 |             Add => write!(f, "ADD"),
[INFO] [stderr] 257 |             Sub => write!(f, "SUB"),
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: the `token @ _` pattern can be written as just `token`
[INFO] [stderr]   --> src/parser.rs:57:18
[INFO] [stderr]    |
[INFO] [stderr] 57 |             Some(ref token @ _) if token == expected => (),
[INFO] [stderr]    |                  ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: the `token @ _` pattern can be written as just `token`
[INFO] [stderr]   --> src/parser.rs:58:18
[INFO] [stderr]    |
[INFO] [stderr] 58 |             Some(token @ _) =>
[INFO] [stderr]    |                  ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/ast.rs:54:9
[INFO] [stderr]    |
[INFO] [stderr] 54 | /         match self
[INFO] [stderr] 55 | |         {
[INFO] [stderr] 56 | |             &Add => write!(f, "+"),
[INFO] [stderr] 57 | |             &Sub => write!(f, "-"),
[INFO] [stderr] 58 | |             &Mul => write!(f, "*"),
[INFO] [stderr] 59 | |             &Div => write!(f, "/"),
[INFO] [stderr] 60 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 54 |         match *self
[INFO] [stderr] 55 |         {
[INFO] [stderr] 56 |             Add => write!(f, "+"),
[INFO] [stderr] 57 |             Sub => write!(f, "-"),
[INFO] [stderr] 58 |             Mul => write!(f, "*"),
[INFO] [stderr] 59 |             Div => write!(f, "/"),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/ast.rs:68:9
[INFO] [stderr]    |
[INFO] [stderr] 68 | /         match self
[INFO] [stderr] 69 | |         {
[INFO] [stderr] 70 | |             &Integer { value: n } => write!(f, "{}", n),
[INFO] [stderr] 71 | |             &Identifier { name: ref s } => write!(f, "{}", s),
[INFO] [stderr] ...  |
[INFO] [stderr] 75 | |                 write!(f, "let {} = {} in {}", name, value, body),
[INFO] [stderr] 76 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 68 |         match *self
[INFO] [stderr] 69 |         {
[INFO] [stderr] 70 |             Integer { value: n } => write!(f, "{}", n),
[INFO] [stderr] 71 |             Identifier { name: ref s } => write!(f, "{}", s),
[INFO] [stderr] 72 |             Binop { ref operator, ref left, ref right } =>
[INFO] [stderr] 73 |                 write!(f, "({} {} {})", left, operator, right),
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/interpreter.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 | /         match expr
[INFO] [stderr] 22 | |         {
[INFO] [stderr] 23 | |             &Integer { value } => value,
[INFO] [stderr] 24 | |             &Identifier { ref name } =>
[INFO] [stderr] ...  |
[INFO] [stderr] 42 | |             },
[INFO] [stderr] 43 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 21 |         match *expr
[INFO] [stderr] 22 |         {
[INFO] [stderr] 23 |             Integer { value } => value,
[INFO] [stderr] 24 |             Identifier { ref name } =>
[INFO] [stderr] 25 |                 match self.environment.get(name)
[INFO] [stderr] 26 |                 {
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `"docker" "inspect" "9073250403a921fad900e0e262470c1e1583439deb439f3c15b86f2022c4e234"`
[INFO] running `"docker" "rm" "-f" "9073250403a921fad900e0e262470c1e1583439deb439f3c15b86f2022c4e234"`
[INFO] [stdout] 9073250403a921fad900e0e262470c1e1583439deb439f3c15b86f2022c4e234