[INFO] updating cached repository alvesmarcos/pascalzim
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/alvesmarcos/pascalzim
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/alvesmarcos/pascalzim" "work/ex/clippy-test-run/sources/stable/gh/alvesmarcos/pascalzim"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/alvesmarcos/pascalzim'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/alvesmarcos/pascalzim" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/alvesmarcos/pascalzim"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/alvesmarcos/pascalzim'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b6949db97425ea212247da0ee7c1b7d7a01a1ada
[INFO] sha for GitHub repo alvesmarcos/pascalzim: b6949db97425ea212247da0ee7c1b7d7a01a1ada
[INFO] validating manifest of alvesmarcos/pascalzim 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 alvesmarcos/pascalzim 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 alvesmarcos/pascalzim
[INFO] finished frobbing alvesmarcos/pascalzim
[INFO] frobbed toml for alvesmarcos/pascalzim written to work/ex/clippy-test-run/sources/stable/gh/alvesmarcos/pascalzim/Cargo.toml
[INFO] started frobbing alvesmarcos/pascalzim
[INFO] finished frobbing alvesmarcos/pascalzim
[INFO] frobbed toml for alvesmarcos/pascalzim written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/alvesmarcos/pascalzim/Cargo.toml
[INFO] crate alvesmarcos/pascalzim 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 alvesmarcos/pascalzim against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-5/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/alvesmarcos/pascalzim:/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] 529d49fae3aa984df97c608770c331613e7e0bc1c787610f7fe742004ad0073d
[INFO] running `"docker" "start" "-a" "529d49fae3aa984df97c608770c331613e7e0bc1c787610f7fe742004ad0073d"`
[INFO] [stderr]     Checking pascalzim v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lexer.rs:46:48
[INFO] [stderr]    |
[INFO] [stderr] 46 |             self.deque_token.push_back(Symbol{ token: token, category: category, line: count });
[INFO] [stderr]    |                                                ^^^^^^^^^^^^ help: replace it with: `token`
[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:46:62
[INFO] [stderr]    |
[INFO] [stderr] 46 |             self.deque_token.push_back(Symbol{ token: token, category: category, line: count });
[INFO] [stderr]    |                                                              ^^^^^^^^^^^^^^^^^^ help: replace it with: `category`
[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/parser.rs:176:13
[INFO] [stderr]     |
[INFO] [stderr] 176 |             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/lexer.rs:46:48
[INFO] [stderr]    |
[INFO] [stderr] 46 |             self.deque_token.push_back(Symbol{ token: token, category: category, line: count });
[INFO] [stderr]    |                                                ^^^^^^^^^^^^ help: replace it with: `token`
[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:46:62
[INFO] [stderr]    |
[INFO] [stderr] 46 |             self.deque_token.push_back(Symbol{ token: token, category: category, line: count });
[INFO] [stderr]    |                                                              ^^^^^^^^^^^^^^^^^^ help: replace it with: `category`
[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/parser.rs:176:13
[INFO] [stderr]     |
[INFO] [stderr] 176 |             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: variable does not need to be mutable
[INFO] [stderr]    --> src/parser.rs:386:15
[INFO] [stderr]     |
[INFO] [stderr] 386 |           let mut saved_line = self.symbol.line;
[INFO] [stderr]     |               ----^^^^^^^^^^
[INFO] [stderr]     |               |
[INFO] [stderr]     |               help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/parser.rs:389:15
[INFO] [stderr]     |
[INFO] [stderr] 389 |           let mut exp_result : Category = self.types_stack.pop().unwrap(); 
[INFO] [stderr]     |               ----^^^^^^^^^^
[INFO] [stderr]     |               |
[INFO] [stderr]     |               help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/parser.rs:473:11
[INFO] [stderr]     |
[INFO] [stderr] 473 |       let mut saved_operator = self.symbol.clone();
[INFO] [stderr]     |           ----^^^^^^^^^^^^^^
[INFO] [stderr]     |           |
[INFO] [stderr]     |           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/parser.rs:476:11
[INFO] [stderr]     |
[INFO] [stderr] 476 |       let mut op1 = self.types_stack.pop().unwrap();
[INFO] [stderr]     |           ----^^^
[INFO] [stderr]     |           |
[INFO] [stderr]     |           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/parser.rs:477:11
[INFO] [stderr]     |
[INFO] [stderr] 477 |       let mut op2 = self.types_stack.pop().unwrap();
[INFO] [stderr]     |           ----^^^
[INFO] [stderr]     |           |
[INFO] [stderr]     |           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/parser.rs:522:11
[INFO] [stderr]     |
[INFO] [stderr] 522 |       let mut saved_operator = self.symbol.clone();
[INFO] [stderr]     |           ----^^^^^^^^^^^^^^
[INFO] [stderr]     |           |
[INFO] [stderr]     |           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/parser.rs:526:11
[INFO] [stderr]     |
[INFO] [stderr] 526 |       let mut op1 = self.types_stack.pop().unwrap();
[INFO] [stderr]     |           ----^^^
[INFO] [stderr]     |           |
[INFO] [stderr]     |           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/parser.rs:527:11
[INFO] [stderr]     |
[INFO] [stderr] 527 |       let mut op2 = self.types_stack.pop().unwrap();
[INFO] [stderr]     |           ----^^^
[INFO] [stderr]     |           |
[INFO] [stderr]     |           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/parser.rs:556:11
[INFO] [stderr]     |
[INFO] [stderr] 556 |       let mut saved_operator = self.symbol.clone();
[INFO] [stderr]     |           ----^^^^^^^^^^^^^^
[INFO] [stderr]     |           |
[INFO] [stderr]     |           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/parser.rs:561:11
[INFO] [stderr]     |
[INFO] [stderr] 561 |       let mut op1 = self.types_stack.pop().unwrap();
[INFO] [stderr]     |           ----^^^
[INFO] [stderr]     |           |
[INFO] [stderr]     |           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/parser.rs:562:11
[INFO] [stderr]     |
[INFO] [stderr] 562 |       let mut op2 = self.types_stack.pop().unwrap();
[INFO] [stderr]     |           ----^^^
[INFO] [stderr]     |           |
[INFO] [stderr]     |           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/parser.rs:593:13
[INFO] [stderr]     |
[INFO] [stderr] 593 |         let mut cat = self.match_token_category(self.symbol.clone());
[INFO] [stderr]     |             ----^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/parser.rs:614:11
[INFO] [stderr]     |
[INFO] [stderr] 614 |       let mut cat = self.match_token_category(self.symbol.clone());
[INFO] [stderr]     |           ----^^^
[INFO] [stderr]     |           |
[INFO] [stderr]     |           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_parser_program10`
[INFO] [stderr]    --> src/parser.rs:838:1
[INFO] [stderr]     |
[INFO] [stderr] 838 | fn test_parser_program10() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_parser_program12`
[INFO] [stderr]    --> src/parser.rs:854:1
[INFO] [stderr]     |
[INFO] [stderr] 854 | fn test_parser_program12() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_parser_program13`
[INFO] [stderr]    --> src/parser.rs:862:1
[INFO] [stderr]     |
[INFO] [stderr] 862 | fn test_parser_program13() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `lexer::Scanner`
[INFO] [stderr]   --> src/lexer.rs:20:3
[INFO] [stderr]    |
[INFO] [stderr] 20 | /   pub fn new() -> Scanner {
[INFO] [stderr] 21 | |     Scanner { deque_token: VecDeque::new() }
[INFO] [stderr] 22 | |   }
[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] 15 | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: this loop could be written as a `while let` loop
[INFO] [stderr]   --> src/lexer.rs:32:7
[INFO] [stderr]    |
[INFO] [stderr] 32 | /       loop {
[INFO] [stderr] 33 | |         if let Some(c) = iter.next() {
[INFO] [stderr] 34 | |           if c == ' ' { 
[INFO] [stderr] 35 | |             while iter.peek() == Some(&' ') { iter.next(); }
[INFO] [stderr] ...  |
[INFO] [stderr] 50 | |         }
[INFO] [stderr] 51 | |       }
[INFO] [stderr]    | |_______^ help: try: `while let Some(c) = iter.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: this if-then-else expression returns a bool literal
[INFO] [stderr]    --> src/lexer.rs:192:18
[INFO] [stderr]     |
[INFO] [stderr] 192 |       Some(c) => if c.is_alphanumeric() || c==&'_' { true } else { false },
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: you can reduce it to: `c.is_alphanumeric() || c==&'_'`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_bool)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_bool
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider adding a `Default` implementation for `parser::Parser`
[INFO] [stderr]   --> src/parser.rs:35:3
[INFO] [stderr]    |
[INFO] [stderr] 35 | /   pub fn new() -> Parser {
[INFO] [stderr] 36 | |     Parser { 
[INFO] [stderr] 37 | |       scanner: Scanner::new(), 
[INFO] [stderr] 38 | |       stack: Vec::new(),
[INFO] [stderr] ...  |
[INFO] [stderr] 46 | |       }
[INFO] [stderr] 47 | |   }
[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] 34 | impl Default for parser::Parser {
[INFO] [stderr] 35 |     fn default() -> Self {
[INFO] [stderr] 36 |         Self::new()
[INFO] [stderr] 37 |     }
[INFO] [stderr] 38 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]    --> src/parser.rs:652:30
[INFO] [stderr]     |
[INFO] [stderr] 652 |   fn search_scope(&self, id: &String) -> bool {
[INFO] [stderr]     |                              ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]    --> src/parser.rs:673:41
[INFO] [stderr]     |
[INFO] [stderr] 673 |   fn is_program_or_procedure(&self, id: &String) -> bool {  
[INFO] [stderr]     |                                         ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]    --> src/parser.rs:687:30
[INFO] [stderr]     |
[INFO] [stderr] 687 |   fn search_stack(&self, id: &String) -> Category {
[INFO] [stderr]     |                              ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/parser.rs:386:15
[INFO] [stderr]     |
[INFO] [stderr] 386 |           let mut saved_line = self.symbol.line;
[INFO] [stderr]     |               ----^^^^^^^^^^
[INFO] [stderr]     |               |
[INFO] [stderr]     |               help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/parser.rs:389:15
[INFO] [stderr]     |
[INFO] [stderr] 389 |           let mut exp_result : Category = self.types_stack.pop().unwrap(); 
[INFO] [stderr]     |               ----^^^^^^^^^^
[INFO] [stderr]     |               |
[INFO] [stderr]     |               help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/parser.rs:473:11
[INFO] [stderr]     |
[INFO] [stderr] 473 |       let mut saved_operator = self.symbol.clone();
[INFO] [stderr]     |           ----^^^^^^^^^^^^^^
[INFO] [stderr]     |           |
[INFO] [stderr]     |           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/parser.rs:476:11
[INFO] [stderr]     |
[INFO] [stderr] 476 |       let mut op1 = self.types_stack.pop().unwrap();
[INFO] [stderr]     |           ----^^^
[INFO] [stderr]     |           |
[INFO] [stderr]     |           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/parser.rs:477:11
[INFO] [stderr]     |
[INFO] [stderr] 477 |       let mut op2 = self.types_stack.pop().unwrap();
[INFO] [stderr]     |           ----^^^
[INFO] [stderr]     |           |
[INFO] [stderr]     |           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/parser.rs:522:11
[INFO] [stderr]     |
[INFO] [stderr] 522 |       let mut saved_operator = self.symbol.clone();
[INFO] [stderr]     |           ----^^^^^^^^^^^^^^
[INFO] [stderr]     |           |
[INFO] [stderr]     |           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/parser.rs:526:11
[INFO] [stderr]     |
[INFO] [stderr] 526 |       let mut op1 = self.types_stack.pop().unwrap();
[INFO] [stderr]     |           ----^^^
[INFO] [stderr]     |           |
[INFO] [stderr]     |           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/parser.rs:527:11
[INFO] [stderr]     |
[INFO] [stderr] 527 |       let mut op2 = self.types_stack.pop().unwrap();
[INFO] [stderr]     |           ----^^^
[INFO] [stderr]     |           |
[INFO] [stderr]     |           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/parser.rs:556:11
[INFO] [stderr]     |
[INFO] [stderr] 556 |       let mut saved_operator = self.symbol.clone();
[INFO] [stderr]     |           ----^^^^^^^^^^^^^^
[INFO] [stderr]     |           |
[INFO] [stderr]     |           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/parser.rs:561:11
[INFO] [stderr]     |
[INFO] [stderr] 561 |       let mut op1 = self.types_stack.pop().unwrap();
[INFO] [stderr]     |           ----^^^
[INFO] [stderr]     |           |
[INFO] [stderr]     |           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/parser.rs:562:11
[INFO] [stderr]     |
[INFO] [stderr] 562 |       let mut op2 = self.types_stack.pop().unwrap();
[INFO] [stderr]     |           ----^^^
[INFO] [stderr]     |           |
[INFO] [stderr]     |           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/parser.rs:593:13
[INFO] [stderr]     |
[INFO] [stderr] 593 |         let mut cat = self.match_token_category(self.symbol.clone());
[INFO] [stderr]     |             ----^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/parser.rs:614:11
[INFO] [stderr]     |
[INFO] [stderr] 614 |       let mut cat = self.match_token_category(self.symbol.clone());
[INFO] [stderr]     |           ----^^^
[INFO] [stderr]     |           |
[INFO] [stderr]     |           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_parser_program10`
[INFO] [stderr]    --> src/parser.rs:838:1
[INFO] [stderr]     |
[INFO] [stderr] 838 | fn test_parser_program10() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_parser_program12`
[INFO] [stderr]    --> src/parser.rs:854:1
[INFO] [stderr]     |
[INFO] [stderr] 854 | fn test_parser_program12() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_parser_program13`
[INFO] [stderr]    --> src/parser.rs:862:1
[INFO] [stderr]     |
[INFO] [stderr] 862 | fn test_parser_program13() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `lexer::Scanner`
[INFO] [stderr]   --> src/lexer.rs:20:3
[INFO] [stderr]    |
[INFO] [stderr] 20 | /   pub fn new() -> Scanner {
[INFO] [stderr] 21 | |     Scanner { deque_token: VecDeque::new() }
[INFO] [stderr] 22 | |   }
[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] 15 | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: this loop could be written as a `while let` loop
[INFO] [stderr]   --> src/lexer.rs:32:7
[INFO] [stderr]    |
[INFO] [stderr] 32 | /       loop {
[INFO] [stderr] 33 | |         if let Some(c) = iter.next() {
[INFO] [stderr] 34 | |           if c == ' ' { 
[INFO] [stderr] 35 | |             while iter.peek() == Some(&' ') { iter.next(); }
[INFO] [stderr] ...  |
[INFO] [stderr] 50 | |         }
[INFO] [stderr] 51 | |       }
[INFO] [stderr]    | |_______^ help: try: `while let Some(c) = iter.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: this if-then-else expression returns a bool literal
[INFO] [stderr]    --> src/lexer.rs:192:18
[INFO] [stderr]     |
[INFO] [stderr] 192 |       Some(c) => if c.is_alphanumeric() || c==&'_' { true } else { false },
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: you can reduce it to: `c.is_alphanumeric() || c==&'_'`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_bool)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_bool
[INFO] [stderr] 
[INFO] [stderr] warning: the function has a cyclomatic complexity of 28
[INFO] [stderr]    --> src/lexer.rs:315:1
[INFO] [stderr]     |
[INFO] [stderr] 315 | / fn test_token_power() {
[INFO] [stderr] 316 | |   let mut s: Scanner = Scanner::new();
[INFO] [stderr] 317 | |   s.build_token("files/program8.txt");
[INFO] [stderr] 318 | |
[INFO] [stderr] ...   |
[INFO] [stderr] 349 | |   assert_eq!(s.next_symbol().token, Token::Period);
[INFO] [stderr] 350 | | }
[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: you should consider adding a `Default` implementation for `parser::Parser`
[INFO] [stderr]   --> src/parser.rs:35:3
[INFO] [stderr]    |
[INFO] [stderr] 35 | /   pub fn new() -> Parser {
[INFO] [stderr] 36 | |     Parser { 
[INFO] [stderr] 37 | |       scanner: Scanner::new(), 
[INFO] [stderr] 38 | |       stack: Vec::new(),
[INFO] [stderr] ...  |
[INFO] [stderr] 46 | |       }
[INFO] [stderr] 47 | |   }
[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] 34 | impl Default for parser::Parser {
[INFO] [stderr] 35 |     fn default() -> Self {
[INFO] [stderr] 36 |         Self::new()
[INFO] [stderr] 37 |     }
[INFO] [stderr] 38 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]    --> src/parser.rs:652:30
[INFO] [stderr]     |
[INFO] [stderr] 652 |   fn search_scope(&self, id: &String) -> bool {
[INFO] [stderr]     |                              ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]    --> src/parser.rs:673:41
[INFO] [stderr]     |
[INFO] [stderr] 673 |   fn is_program_or_procedure(&self, id: &String) -> bool {  
[INFO] [stderr]     |                                         ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]    --> src/parser.rs:687:30
[INFO] [stderr]     |
[INFO] [stderr] 687 |   fn search_stack(&self, id: &String) -> Category {
[INFO] [stderr]     |                              ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.88s
[INFO] running `"docker" "inspect" "529d49fae3aa984df97c608770c331613e7e0bc1c787610f7fe742004ad0073d"`
[INFO] running `"docker" "rm" "-f" "529d49fae3aa984df97c608770c331613e7e0bc1c787610f7fe742004ad0073d"`
[INFO] [stdout] 529d49fae3aa984df97c608770c331613e7e0bc1c787610f7fe742004ad0073d