[INFO] updating cached repository alexeyden/ecmascript_toy
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/alexeyden/ecmascript_toy
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/alexeyden/ecmascript_toy" "work/ex/clippy-test-run/sources/stable/gh/alexeyden/ecmascript_toy"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/alexeyden/ecmascript_toy'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/alexeyden/ecmascript_toy" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/alexeyden/ecmascript_toy"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/alexeyden/ecmascript_toy'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0297435df3d80bbb8f73289add0fb87038cd6330
[INFO] sha for GitHub repo alexeyden/ecmascript_toy: 0297435df3d80bbb8f73289add0fb87038cd6330
[INFO] validating manifest of alexeyden/ecmascript_toy 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 alexeyden/ecmascript_toy 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 alexeyden/ecmascript_toy
[INFO] finished frobbing alexeyden/ecmascript_toy
[INFO] frobbed toml for alexeyden/ecmascript_toy written to work/ex/clippy-test-run/sources/stable/gh/alexeyden/ecmascript_toy/Cargo.toml
[INFO] started frobbing alexeyden/ecmascript_toy
[INFO] finished frobbing alexeyden/ecmascript_toy
[INFO] frobbed toml for alexeyden/ecmascript_toy written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/alexeyden/ecmascript_toy/Cargo.toml
[INFO] crate alexeyden/ecmascript_toy 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 alexeyden/ecmascript_toy against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-0/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/alexeyden/ecmascript_toy:/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] 49fae90809bcd9e01bc89d26fe5ab21ec6f9296d564059ee96b35204ab32c30d
[INFO] running `"docker" "start" "-a" "49fae90809bcd9e01bc89d26fe5ab21ec6f9296d564059ee96b35204ab32c30d"`
[INFO] [stderr]     Checking ecmascript_toy v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/tokenizer.rs:35:7
[INFO] [stderr]    |
[INFO] [stderr] 35 |       text: text,
[INFO] [stderr]    |       ^^^^^^^^^^ help: replace it with: `text`
[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/tokenizer.rs:36:7
[INFO] [stderr]    |
[INFO] [stderr] 36 |       line: line,
[INFO] [stderr]    |       ^^^^^^^^^^ help: replace it with: `line`
[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/tokenizer.rs:37:7
[INFO] [stderr]    |
[INFO] [stderr] 37 |       col: col
[INFO] [stderr]    |       ^^^^^^^^ help: replace it with: `col`
[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/tokenizer.rs:71:7
[INFO] [stderr]    |
[INFO] [stderr] 71 |       text: text,
[INFO] [stderr]    |       ^^^^^^^^^^ help: replace it with: `text`
[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/syntax_tree.rs:81:12
[INFO] [stderr]    |
[INFO] [stderr] 81 |     Node { type_: type_, body: vec![] }
[INFO] [stderr]    |            ^^^^^^^^^^^^ help: replace it with: `type_`
[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/frame_stack.rs:113:9
[INFO] [stderr]     |
[INFO] [stderr] 113 |         frame_offset: frame_offset,
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `frame_offset`
[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/var_analyzer.rs:23:7
[INFO] [stderr]    |
[INFO] [stderr] 23 |       fstack: fstack
[INFO] [stderr]    |       ^^^^^^^^^^^^^^ help: replace it with: `fstack`
[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/var_analyzer.rs:63:7
[INFO] [stderr]    |
[INFO] [stderr] 63 |       fstack: fstack
[INFO] [stderr]    |       ^^^^^^^^^^^^^^ help: replace it with: `fstack`
[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/tokenizer.rs:35:7
[INFO] [stderr]    |
[INFO] [stderr] 35 |       text: text,
[INFO] [stderr]    |       ^^^^^^^^^^ help: replace it with: `text`
[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/tokenizer.rs:36:7
[INFO] [stderr]    |
[INFO] [stderr] 36 |       line: line,
[INFO] [stderr]    |       ^^^^^^^^^^ help: replace it with: `line`
[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/tokenizer.rs:37:7
[INFO] [stderr]    |
[INFO] [stderr] 37 |       col: col
[INFO] [stderr]    |       ^^^^^^^^ help: replace it with: `col`
[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/tokenizer.rs:71:7
[INFO] [stderr]    |
[INFO] [stderr] 71 |       text: text,
[INFO] [stderr]    |       ^^^^^^^^^^ help: replace it with: `text`
[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/syntax_tree.rs:81:12
[INFO] [stderr]    |
[INFO] [stderr] 81 |     Node { type_: type_, body: vec![] }
[INFO] [stderr]    |            ^^^^^^^^^^^^ help: replace it with: `type_`
[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/frame_stack.rs:113:9
[INFO] [stderr]     |
[INFO] [stderr] 113 |         frame_offset: frame_offset,
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `frame_offset`
[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/var_analyzer.rs:23:7
[INFO] [stderr]    |
[INFO] [stderr] 23 |       fstack: fstack
[INFO] [stderr]    |       ^^^^^^^^^^^^^^ help: replace it with: `fstack`
[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/var_analyzer.rs:63:7
[INFO] [stderr]    |
[INFO] [stderr] 63 |       fstack: fstack
[INFO] [stderr]    |       ^^^^^^^^^^^^^^ help: replace it with: `fstack`
[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: unneeded return statement
[INFO] [stderr]   --> src/frame_stack.rs:70:5
[INFO] [stderr]    |
[INFO] [stderr] 70 |     return parents;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^ help: remove `return` as shown: `parents`
[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: this `else { if .. }` block can be collapsed
[INFO] [stderr]    --> src/compiler.rs:142:16
[INFO] [stderr]     |
[INFO] [stderr] 142 |           } else {
[INFO] [stderr]     |  ________________^
[INFO] [stderr] 143 | |           if let NodeType::Number(n) = node.body.get(0).unwrap().type_ {
[INFO] [stderr] 144 | |             self.assembler.push_float(-n);
[INFO] [stderr] 145 | |           } else {
[INFO] [stderr] ...   |
[INFO] [stderr] 149 | |           }
[INFO] [stderr] 150 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::collapsible_if)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]     |
[INFO] [stderr] 142 |         } else if let NodeType::Number(n) = node.body.get(0).unwrap().type_ {
[INFO] [stderr] 143 |   self.assembler.push_float(-n);
[INFO] [stderr] 144 | } else {
[INFO] [stderr] 145 |   self.compile_expr(node.body.get(0).unwrap());
[INFO] [stderr] 146 |   self.take_value(node.body.get(0).unwrap());
[INFO] [stderr] 147 |   self.assembler.op_unary(&node.type_);
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]    --> src/compiler.rs:194:16
[INFO] [stderr]     |
[INFO] [stderr] 194 |           } else {
[INFO] [stderr]     |  ________________^
[INFO] [stderr] 195 | |           if let Some(var) = self.frame_stack.find_var(s) {
[INFO] [stderr] 196 | |             let sp_offset = self.assembler.get_sp() as u32 - var.frame_offset as u32;
[INFO] [stderr] 197 | |
[INFO] [stderr] ...   |
[INFO] [stderr] 203 | |           }
[INFO] [stderr] 204 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]     |
[INFO] [stderr] 194 |         } else if let Some(var) = self.frame_stack.find_var(s) {
[INFO] [stderr] 195 |   let sp_offset = self.assembler.get_sp() as u32 - var.frame_offset as u32;
[INFO] [stderr] 196 | 
[INFO] [stderr] 197 |   self.assembler.take(sp_offset);
[INFO] [stderr] 198 |   self.assembler.push_int(var.var_offset as u32);
[INFO] [stderr] 199 |   self.assembler.op_binary(&NodeType::Op(OpType::OpPlus));
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/frame_stack.rs:70:5
[INFO] [stderr]    |
[INFO] [stderr] 70 |     return parents;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^ help: remove `return` as shown: `parents`
[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: this `else { if .. }` block can be collapsed
[INFO] [stderr]    --> src/compiler.rs:142:16
[INFO] [stderr]     |
[INFO] [stderr] 142 |           } else {
[INFO] [stderr]     |  ________________^
[INFO] [stderr] 143 | |           if let NodeType::Number(n) = node.body.get(0).unwrap().type_ {
[INFO] [stderr] 144 | |             self.assembler.push_float(-n);
[INFO] [stderr] 145 | |           } else {
[INFO] [stderr] ...   |
[INFO] [stderr] 149 | |           }
[INFO] [stderr] 150 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::collapsible_if)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]     |
[INFO] [stderr] 142 |         } else if let NodeType::Number(n) = node.body.get(0).unwrap().type_ {
[INFO] [stderr] 143 |   self.assembler.push_float(-n);
[INFO] [stderr] 144 | } else {
[INFO] [stderr] 145 |   self.compile_expr(node.body.get(0).unwrap());
[INFO] [stderr] 146 |   self.take_value(node.body.get(0).unwrap());
[INFO] [stderr] 147 |   self.assembler.op_unary(&node.type_);
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]    --> src/compiler.rs:194:16
[INFO] [stderr]     |
[INFO] [stderr] 194 |           } else {
[INFO] [stderr]     |  ________________^
[INFO] [stderr] 195 | |           if let Some(var) = self.frame_stack.find_var(s) {
[INFO] [stderr] 196 | |             let sp_offset = self.assembler.get_sp() as u32 - var.frame_offset as u32;
[INFO] [stderr] 197 | |
[INFO] [stderr] ...   |
[INFO] [stderr] 203 | |           }
[INFO] [stderr] 204 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]     |
[INFO] [stderr] 194 |         } else if let Some(var) = self.frame_stack.find_var(s) {
[INFO] [stderr] 195 |   let sp_offset = self.assembler.get_sp() as u32 - var.frame_offset as u32;
[INFO] [stderr] 196 | 
[INFO] [stderr] 197 |   self.assembler.take(sp_offset);
[INFO] [stderr] 198 |   self.assembler.push_int(var.var_offset as u32);
[INFO] [stderr] 199 |   self.assembler.op_binary(&NodeType::Op(OpType::OpPlus));
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/parser.rs:287:34
[INFO] [stderr]     |
[INFO] [stderr] 287 |   fn parse_expression(&mut self, mut parent: &mut Node) {
[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:312:37
[INFO] [stderr]     |
[INFO] [stderr] 312 |   fn parse_condition_cmp(&mut self, mut parent: &mut Node) {
[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:341:37
[INFO] [stderr]     |
[INFO] [stderr] 341 |   fn parse_condition_and(&mut self, mut parent: &mut Node) {
[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:365:33
[INFO] [stderr]     |
[INFO] [stderr] 365 |   fn parse_condition(&mut self, mut parent: &mut Node) {
[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/frame_stack.rs:122:9
[INFO] [stderr]     |
[INFO] [stderr] 122 |     let mut offsets = &mut self.frames[self.cur_frame].var_offsets;
[INFO] [stderr]     |         ----^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: the function has a cyclomatic complexity of 36
[INFO] [stderr]    --> src/tokenizer.rs:78:3
[INFO] [stderr]     |
[INFO] [stderr] 78  | /   pub fn tokenize(&mut self) -> Result<&LinkedList<Token>, String> {
[INFO] [stderr] 79  | |     loop {
[INFO] [stderr] 80  | |       let c = match self.peek_char() {
[INFO] [stderr] 81  | |         Some(ch) => ch,
[INFO] [stderr] ...   |
[INFO] [stderr] 303 | |     Ok(&self.tokens)
[INFO] [stderr] 304 | |   }
[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: this loop could be written as a `while let` loop
[INFO] [stderr]    --> src/tokenizer.rs:79:5
[INFO] [stderr]     |
[INFO] [stderr] 79  | /     loop {
[INFO] [stderr] 80  | |       let c = match self.peek_char() {
[INFO] [stderr] 81  | |         Some(ch) => ch,
[INFO] [stderr] 82  | |         None => break
[INFO] [stderr] ...   |
[INFO] [stderr] 297 | |       }
[INFO] [stderr] 298 | |     }
[INFO] [stderr]     | |_____^ help: try: `while let Some(ch) = self.peek_char() { .. }`
[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: single-character string constant used as pattern
[INFO] [stderr]   --> src/tokenizer.rs:99:39
[INFO] [stderr]    |
[INFO] [stderr] 99 |             c == '.' && !cur.contains(".");
[INFO] [stderr]    |                                       ^^^ help: try using a char instead: `'.'`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: use of `unwrap_or` followed by a function call
[INFO] [stderr]    --> src/tokenizer.rs:340:34
[INFO] [stderr]     |
[INFO] [stderr] 340 |     self.start = self.peek_pos().unwrap_or(self.text.len()); 
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| self.text.len())`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/parser.rs:287:34
[INFO] [stderr]     |
[INFO] [stderr] 287 |   fn parse_expression(&mut self, mut parent: &mut Node) {
[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:312:37
[INFO] [stderr]     |
[INFO] [stderr] 312 |   fn parse_condition_cmp(&mut self, mut parent: &mut Node) {
[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:341:37
[INFO] [stderr]     |
[INFO] [stderr] 341 |   fn parse_condition_and(&mut self, mut parent: &mut Node) {
[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:365:33
[INFO] [stderr]     |
[INFO] [stderr] 365 |   fn parse_condition(&mut self, mut parent: &mut Node) {
[INFO] [stderr]     |                                 ----^^^^^^
[INFO] [stderr]     |                                 |
[INFO] [stderr]     |                                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/syntax_tree.rs:113:9
[INFO] [stderr]     |
[INFO] [stderr] 113 |     for ref mut ch in self.body.iter_mut() {
[INFO] [stderr]     |         ^^^^^^^^^^    -------------------- help: try: `let ch = &mut self.body.iter_mut();`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::toplevel_ref_arg)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/frame_stack.rs:93:36
[INFO] [stderr]    |
[INFO] [stderr] 93 |   pub fn find_var(&mut self, name: &String) -> Option<VarDescr>
[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/frame_stack.rs:120:35
[INFO] [stderr]     |
[INFO] [stderr] 120 |   pub fn put_var(&mut self, name: &String) {
[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/frame_stack.rs:128:42
[INFO] [stderr]     |
[INFO] [stderr] 128 |   pub fn put_var_global(&mut self, name: &String) {
[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: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/assembler.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 | /     match nt {
[INFO] [stderr] 58 | |       &NodeType::Op(OpType::OpMul)   => Some(OpCode::Mul),
[INFO] [stderr] 59 | |       &NodeType::Op(OpType::OpDiv)   => Some(OpCode::Div),
[INFO] [stderr] 60 | |       &NodeType::Op(OpType::OpMod)   => Some(OpCode::Mod),
[INFO] [stderr] ...  |
[INFO] [stderr] 72 | |       _ => None
[INFO] [stderr] 73 | |     }
[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] 57 |     match *nt {
[INFO] [stderr] 58 |       NodeType::Op(OpType::OpMul)   => Some(OpCode::Mul),
[INFO] [stderr] 59 |       NodeType::Op(OpType::OpDiv)   => Some(OpCode::Div),
[INFO] [stderr] 60 |       NodeType::Op(OpType::OpMod)   => Some(OpCode::Mod),
[INFO] [stderr] 61 |       NodeType::Op(OpType::OpOr)    => Some(OpCode::Or),
[INFO] [stderr] 62 |       NodeType::Op(OpType::OpAnd)   => Some(OpCode::And),
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/frame_stack.rs:122:9
[INFO] [stderr]     |
[INFO] [stderr] 122 |     let mut offsets = &mut self.frames[self.cur_frame].var_offsets;
[INFO] [stderr]     |         ----^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/assembler.rs:226:14
[INFO] [stderr]     |
[INFO] [stderr] 226 |       let op = match op {
[INFO] [stderr]     |  ______________^
[INFO] [stderr] 227 | |       &NodeType::Op(OpType::OpPlus) => return,
[INFO] [stderr] 228 | |       &NodeType::Op(OpType::OpMinus) => OpCode::Neg,
[INFO] [stderr] 229 | |       &NodeType::Op(OpType::OpNot) => OpCode::Not,
[INFO] [stderr] 230 | |       _ => panic!()
[INFO] [stderr] 231 | |     };
[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] 226 |     let op = match *op {
[INFO] [stderr] 227 |       NodeType::Op(OpType::OpPlus) => return,
[INFO] [stderr] 228 |       NodeType::Op(OpType::OpMinus) => OpCode::Neg,
[INFO] [stderr] 229 |       NodeType::Op(OpType::OpNot) => OpCode::Not,
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to u64 may become silently lossy if types change
[INFO] [stderr]    --> src/assembler.rs:256:38
[INFO] [stderr]     |
[INFO] [stderr] 256 |       self.file.seek(SeekFrom::Start(*pos as u64)).unwrap();
[INFO] [stderr]     |                                      ^^^^^^^^^^^ help: try: `u64::from(*pos)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]   --> src/compiler.rs:50:13
[INFO] [stderr]    |
[INFO] [stderr] 50 |         for ref stmt in &node.body {
[INFO] [stderr]    |             ^^^^^^^^    ---------- help: try: `let stmt = &&node.body;`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/compiler.rs:79:22
[INFO] [stderr]    |
[INFO] [stderr] 79 |     let lhand_node = node.body.get(0).unwrap();
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[0]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::get_unwrap)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/compiler.rs:80:22
[INFO] [stderr]    |
[INFO] [stderr] 80 |     let rhand_node = node.body.get(1).unwrap();
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[1]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to both the expression and the patterns
[INFO] [stderr]    --> src/compiler.rs:102:5
[INFO] [stderr]     |
[INFO] [stderr] 102 | /     match &node.type_ {
[INFO] [stderr] 103 | |       &NodeType::Op(OpType::OpMul)     |
[INFO] [stderr] 104 | |       &NodeType::Op(OpType::OpDiv)     |
[INFO] [stderr] 105 | |       &NodeType::Op(OpType::OpMod)     |
[INFO] [stderr] ...   |
[INFO] [stderr] 212 | |       _ => panic!()
[INFO] [stderr] 213 | |     }
[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: try
[INFO] [stderr]     |
[INFO] [stderr] 102 |     match node.type_ {
[INFO] [stderr] 103 |       NodeType::Op(OpType::OpMul)     |
[INFO] [stderr] 104 |       NodeType::Op(OpType::OpDiv)     |
[INFO] [stderr] 105 |       NodeType::Op(OpType::OpMod)     |
[INFO] [stderr] 106 |       NodeType::Op(OpType::OpOr)      |
[INFO] [stderr] 107 |       NodeType::Op(OpType::OpAnd)     |
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:114:27
[INFO] [stderr]     |
[INFO] [stderr] 114 |         self.compile_expr(node.body.get(0).unwrap());
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[0]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:115:25
[INFO] [stderr]     |
[INFO] [stderr] 115 |         self.take_value(node.body.get(0).unwrap());
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[0]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:117:27
[INFO] [stderr]     |
[INFO] [stderr] 117 |         self.compile_expr(node.body.get(1).unwrap());
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[1]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:118:25
[INFO] [stderr]     |
[INFO] [stderr] 118 |         self.take_value(node.body.get(1).unwrap());
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[1]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:124:27
[INFO] [stderr]     |
[INFO] [stderr] 124 |         self.compile_expr(node.body.get(0).unwrap());
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[0]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:125:25
[INFO] [stderr]     |
[INFO] [stderr] 125 |         self.take_value(node.body.get(0).unwrap());
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[0]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:137:29
[INFO] [stderr]     |
[INFO] [stderr] 137 |           self.compile_expr(node.body.get(0).unwrap());
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[0]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:138:27
[INFO] [stderr]     |
[INFO] [stderr] 138 |           self.take_value(node.body.get(0).unwrap());
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[0]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:143:40
[INFO] [stderr]     |
[INFO] [stderr] 143 |           if let NodeType::Number(n) = node.body.get(0).unwrap().type_ {
[INFO] [stderr]     |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[0]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:146:31
[INFO] [stderr]     |
[INFO] [stderr] 146 |             self.compile_expr(node.body.get(0).unwrap());
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[0]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:147:29
[INFO] [stderr]     |
[INFO] [stderr] 147 |             self.take_value(node.body.get(0).unwrap());
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[0]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:153:27
[INFO] [stderr]     |
[INFO] [stderr] 153 |         self.compile_expr(node.body.get(1).unwrap());
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[1]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:154:25
[INFO] [stderr]     |
[INFO] [stderr] 154 |         self.take_value(node.body.get(1).unwrap());
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[1]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:156:31
[INFO] [stderr]     |
[INFO] [stderr] 156 |         self.compile_dict_key(node.body.get(0).unwrap());
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[0]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:161:27
[INFO] [stderr]     |
[INFO] [stderr] 161 |         self.compile_expr(node.body.get(1).unwrap());
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[1]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:162:25
[INFO] [stderr]     |
[INFO] [stderr] 162 |         self.take_value(node.body.get(1).unwrap());
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[1]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:164:27
[INFO] [stderr]     |
[INFO] [stderr] 164 |         self.compile_expr(node.body.get(0).unwrap());
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[0]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:165:25
[INFO] [stderr]     |
[INFO] [stderr] 165 |         self.take_value(node.body.get(0).unwrap());
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[0]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:248:16
[INFO] [stderr]     |
[INFO] [stderr] 248 |     let body = node.body.get(1).unwrap();
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[1]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/compiler.rs:271:8
[INFO] [stderr]     |
[INFO] [stderr] 271 |     if node.body.len() > 0 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!node.body.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/compiler.rs:294:9
[INFO] [stderr]     |
[INFO] [stderr] 294 |     for ref n in &args_node.body {
[INFO] [stderr]     |         ^^^^^    --------------- help: try: `let n = &&args_node.body;`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:307:16
[INFO] [stderr]     |
[INFO] [stderr] 307 |     let cond = node.body.get(0).unwrap();
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[0]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:308:19
[INFO] [stderr]     |
[INFO] [stderr] 308 |     let if_body = node.body.get(1).unwrap();
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[1]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:333:16
[INFO] [stderr]     |
[INFO] [stderr] 333 |     let cond = node.body.get(0).unwrap();
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[0]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:334:16
[INFO] [stderr]     |
[INFO] [stderr] 334 |     let body = node.body.get(1).unwrap();
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[1]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to both the expression and the patterns
[INFO] [stderr]   --> src/main.rs:35:16
[INFO] [stderr]    |
[INFO] [stderr] 35 |     let tokens = match &tokenizer.tokenize() {
[INFO] [stderr]    |  ________________^
[INFO] [stderr] 36 | |     &Ok(tokens) => tokens,
[INFO] [stderr] 37 | |     &Err(ref msg) => {
[INFO] [stderr] 38 | |       println!("Tokenizer error:\n{}", msg);
[INFO] [stderr] 39 | |       return;
[INFO] [stderr] 40 | |     }
[INFO] [stderr] 41 | |   };
[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: try
[INFO] [stderr]    |
[INFO] [stderr] 35 |   let tokens = match tokenizer.tokenize() {
[INFO] [stderr] 36 |     Ok(tokens) => tokens,
[INFO] [stderr] 37 |     Err(ref msg) => {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]   --> src/main.rs:51:9
[INFO] [stderr]    |
[INFO] [stderr] 51 |     for ref t in tokens.iter() {
[INFO] [stderr]    |         ^^^^^    ------------- help: try: `let t = &tokens.iter();`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/main.rs:125:6
[INFO] [stderr]     |
[INFO] [stderr] 125 |   if matches.free.len() == 0 {
[INFO] [stderr]     |      ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `matches.free.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: the function has a cyclomatic complexity of 36
[INFO] [stderr]    --> src/tokenizer.rs:78:3
[INFO] [stderr]     |
[INFO] [stderr] 78  | /   pub fn tokenize(&mut self) -> Result<&LinkedList<Token>, String> {
[INFO] [stderr] 79  | |     loop {
[INFO] [stderr] 80  | |       let c = match self.peek_char() {
[INFO] [stderr] 81  | |         Some(ch) => ch,
[INFO] [stderr] ...   |
[INFO] [stderr] 303 | |     Ok(&self.tokens)
[INFO] [stderr] 304 | |   }
[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: this loop could be written as a `while let` loop
[INFO] [stderr]    --> src/tokenizer.rs:79:5
[INFO] [stderr]     |
[INFO] [stderr] 79  | /     loop {
[INFO] [stderr] 80  | |       let c = match self.peek_char() {
[INFO] [stderr] 81  | |         Some(ch) => ch,
[INFO] [stderr] 82  | |         None => break
[INFO] [stderr] ...   |
[INFO] [stderr] 297 | |       }
[INFO] [stderr] 298 | |     }
[INFO] [stderr]     | |_____^ help: try: `while let Some(ch) = self.peek_char() { .. }`
[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: single-character string constant used as pattern
[INFO] [stderr]   --> src/tokenizer.rs:99:39
[INFO] [stderr]    |
[INFO] [stderr] 99 |             c == '.' && !cur.contains(".");
[INFO] [stderr]    |                                       ^^^ help: try using a char instead: `'.'`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: use of `unwrap_or` followed by a function call
[INFO] [stderr]    --> src/tokenizer.rs:340:34
[INFO] [stderr]     |
[INFO] [stderr] 340 |     self.start = self.peek_pos().unwrap_or(self.text.len()); 
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| self.text.len())`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/syntax_tree.rs:113:9
[INFO] [stderr]     |
[INFO] [stderr] 113 |     for ref mut ch in self.body.iter_mut() {
[INFO] [stderr]     |         ^^^^^^^^^^    -------------------- help: try: `let ch = &mut self.body.iter_mut();`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::toplevel_ref_arg)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/frame_stack.rs:93:36
[INFO] [stderr]    |
[INFO] [stderr] 93 |   pub fn find_var(&mut self, name: &String) -> Option<VarDescr>
[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/frame_stack.rs:120:35
[INFO] [stderr]     |
[INFO] [stderr] 120 |   pub fn put_var(&mut self, name: &String) {
[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/frame_stack.rs:128:42
[INFO] [stderr]     |
[INFO] [stderr] 128 |   pub fn put_var_global(&mut self, name: &String) {
[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: called `is_some()` after searching an `Iterator` with find. This is more succinctly expressed by calling `any()`.
[INFO] [stderr]    --> src/var_analyzer.rs:112:42
[INFO] [stderr]     |
[INFO] [stderr] 112 |     let frame_has_var = |f : &Frame, st| f.var_offsets.iter().find(|&s| s == st).is_some();
[INFO] [stderr]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::search_is_some)] on by default
[INFO] [stderr]     = note: replace `find(|&s| s == st).is_some()` with `any(|&s| s == st)`
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#search_is_some
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/assembler.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 | /     match nt {
[INFO] [stderr] 58 | |       &NodeType::Op(OpType::OpMul)   => Some(OpCode::Mul),
[INFO] [stderr] 59 | |       &NodeType::Op(OpType::OpDiv)   => Some(OpCode::Div),
[INFO] [stderr] 60 | |       &NodeType::Op(OpType::OpMod)   => Some(OpCode::Mod),
[INFO] [stderr] ...  |
[INFO] [stderr] 72 | |       _ => None
[INFO] [stderr] 73 | |     }
[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] 57 |     match *nt {
[INFO] [stderr] 58 |       NodeType::Op(OpType::OpMul)   => Some(OpCode::Mul),
[INFO] [stderr] 59 |       NodeType::Op(OpType::OpDiv)   => Some(OpCode::Div),
[INFO] [stderr] 60 |       NodeType::Op(OpType::OpMod)   => Some(OpCode::Mod),
[INFO] [stderr] 61 |       NodeType::Op(OpType::OpOr)    => Some(OpCode::Or),
[INFO] [stderr] 62 |       NodeType::Op(OpType::OpAnd)   => Some(OpCode::And),
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/assembler.rs:226:14
[INFO] [stderr]     |
[INFO] [stderr] 226 |       let op = match op {
[INFO] [stderr]     |  ______________^
[INFO] [stderr] 227 | |       &NodeType::Op(OpType::OpPlus) => return,
[INFO] [stderr] 228 | |       &NodeType::Op(OpType::OpMinus) => OpCode::Neg,
[INFO] [stderr] 229 | |       &NodeType::Op(OpType::OpNot) => OpCode::Not,
[INFO] [stderr] 230 | |       _ => panic!()
[INFO] [stderr] 231 | |     };
[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] 226 |     let op = match *op {
[INFO] [stderr] 227 |       NodeType::Op(OpType::OpPlus) => return,
[INFO] [stderr] 228 |       NodeType::Op(OpType::OpMinus) => OpCode::Neg,
[INFO] [stderr] 229 |       NodeType::Op(OpType::OpNot) => OpCode::Not,
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to u64 may become silently lossy if types change
[INFO] [stderr]    --> src/assembler.rs:256:38
[INFO] [stderr]     |
[INFO] [stderr] 256 |       self.file.seek(SeekFrom::Start(*pos as u64)).unwrap();
[INFO] [stderr]     |                                      ^^^^^^^^^^^ help: try: `u64::from(*pos)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]   --> src/compiler.rs:50:13
[INFO] [stderr]    |
[INFO] [stderr] 50 |         for ref stmt in &node.body {
[INFO] [stderr]    |             ^^^^^^^^    ---------- help: try: `let stmt = &&node.body;`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/compiler.rs:79:22
[INFO] [stderr]    |
[INFO] [stderr] 79 |     let lhand_node = node.body.get(0).unwrap();
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[0]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::get_unwrap)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/compiler.rs:80:22
[INFO] [stderr]    |
[INFO] [stderr] 80 |     let rhand_node = node.body.get(1).unwrap();
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[1]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to both the expression and the patterns
[INFO] [stderr]    --> src/compiler.rs:102:5
[INFO] [stderr]     |
[INFO] [stderr] 102 | /     match &node.type_ {
[INFO] [stderr] 103 | |       &NodeType::Op(OpType::OpMul)     |
[INFO] [stderr] 104 | |       &NodeType::Op(OpType::OpDiv)     |
[INFO] [stderr] 105 | |       &NodeType::Op(OpType::OpMod)     |
[INFO] [stderr] ...   |
[INFO] [stderr] 212 | |       _ => panic!()
[INFO] [stderr] 213 | |     }
[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: try
[INFO] [stderr]     |
[INFO] [stderr] 102 |     match node.type_ {
[INFO] [stderr] 103 |       NodeType::Op(OpType::OpMul)     |
[INFO] [stderr] 104 |       NodeType::Op(OpType::OpDiv)     |
[INFO] [stderr] 105 |       NodeType::Op(OpType::OpMod)     |
[INFO] [stderr] 106 |       NodeType::Op(OpType::OpOr)      |
[INFO] [stderr] 107 |       NodeType::Op(OpType::OpAnd)     |
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:114:27
[INFO] [stderr]     |
[INFO] [stderr] 114 |         self.compile_expr(node.body.get(0).unwrap());
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[0]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:115:25
[INFO] [stderr]     |
[INFO] [stderr] 115 |         self.take_value(node.body.get(0).unwrap());
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[0]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:117:27
[INFO] [stderr]     |
[INFO] [stderr] 117 |         self.compile_expr(node.body.get(1).unwrap());
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[1]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:118:25
[INFO] [stderr]     |
[INFO] [stderr] 118 |         self.take_value(node.body.get(1).unwrap());
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[1]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:124:27
[INFO] [stderr]     |
[INFO] [stderr] 124 |         self.compile_expr(node.body.get(0).unwrap());
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[0]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:125:25
[INFO] [stderr]     |
[INFO] [stderr] 125 |         self.take_value(node.body.get(0).unwrap());
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[0]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:137:29
[INFO] [stderr]     |
[INFO] [stderr] 137 |           self.compile_expr(node.body.get(0).unwrap());
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[0]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:138:27
[INFO] [stderr]     |
[INFO] [stderr] 138 |           self.take_value(node.body.get(0).unwrap());
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[0]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:143:40
[INFO] [stderr]     |
[INFO] [stderr] 143 |           if let NodeType::Number(n) = node.body.get(0).unwrap().type_ {
[INFO] [stderr]     |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[0]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:146:31
[INFO] [stderr]     |
[INFO] [stderr] 146 |             self.compile_expr(node.body.get(0).unwrap());
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[0]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:147:29
[INFO] [stderr]     |
[INFO] [stderr] 147 |             self.take_value(node.body.get(0).unwrap());
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[0]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:153:27
[INFO] [stderr]     |
[INFO] [stderr] 153 |         self.compile_expr(node.body.get(1).unwrap());
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[1]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:154:25
[INFO] [stderr]     |
[INFO] [stderr] 154 |         self.take_value(node.body.get(1).unwrap());
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[1]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:156:31
[INFO] [stderr]     |
[INFO] [stderr] 156 |         self.compile_dict_key(node.body.get(0).unwrap());
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[0]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:161:27
[INFO] [stderr]     |
[INFO] [stderr] 161 |         self.compile_expr(node.body.get(1).unwrap());
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[1]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:162:25
[INFO] [stderr]     |
[INFO] [stderr] 162 |         self.take_value(node.body.get(1).unwrap());
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[1]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:164:27
[INFO] [stderr]     |
[INFO] [stderr] 164 |         self.compile_expr(node.body.get(0).unwrap());
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[0]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:165:25
[INFO] [stderr]     |
[INFO] [stderr] 165 |         self.take_value(node.body.get(0).unwrap());
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[0]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:248:16
[INFO] [stderr]     |
[INFO] [stderr] 248 |     let body = node.body.get(1).unwrap();
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[1]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/compiler.rs:271:8
[INFO] [stderr]     |
[INFO] [stderr] 271 |     if node.body.len() > 0 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!node.body.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/compiler.rs:294:9
[INFO] [stderr]     |
[INFO] [stderr] 294 |     for ref n in &args_node.body {
[INFO] [stderr]     |         ^^^^^    --------------- help: try: `let n = &&args_node.body;`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:307:16
[INFO] [stderr]     |
[INFO] [stderr] 307 |     let cond = node.body.get(0).unwrap();
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[0]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:308:19
[INFO] [stderr]     |
[INFO] [stderr] 308 |     let if_body = node.body.get(1).unwrap();
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[1]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:333:16
[INFO] [stderr]     |
[INFO] [stderr] 333 |     let cond = node.body.get(0).unwrap();
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[0]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/compiler.rs:334:16
[INFO] [stderr]     |
[INFO] [stderr] 334 |     let body = node.body.get(1).unwrap();
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node.body[1]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to both the expression and the patterns
[INFO] [stderr]   --> src/main.rs:35:16
[INFO] [stderr]    |
[INFO] [stderr] 35 |     let tokens = match &tokenizer.tokenize() {
[INFO] [stderr]    |  ________________^
[INFO] [stderr] 36 | |     &Ok(tokens) => tokens,
[INFO] [stderr] 37 | |     &Err(ref msg) => {
[INFO] [stderr] 38 | |       println!("Tokenizer error:\n{}", msg);
[INFO] [stderr] 39 | |       return;
[INFO] [stderr] 40 | |     }
[INFO] [stderr] 41 | |   };
[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: try
[INFO] [stderr]    |
[INFO] [stderr] 35 |   let tokens = match tokenizer.tokenize() {
[INFO] [stderr] 36 |     Ok(tokens) => tokens,
[INFO] [stderr] 37 |     Err(ref msg) => {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]   --> src/main.rs:51:9
[INFO] [stderr]    |
[INFO] [stderr] 51 |     for ref t in tokens.iter() {
[INFO] [stderr]    |         ^^^^^    ------------- help: try: `let t = &tokens.iter();`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/main.rs:125:6
[INFO] [stderr]     |
[INFO] [stderr] 125 |   if matches.free.len() == 0 {
[INFO] [stderr]     |      ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `matches.free.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.22s
[INFO] running `"docker" "inspect" "49fae90809bcd9e01bc89d26fe5ab21ec6f9296d564059ee96b35204ab32c30d"`
[INFO] running `"docker" "rm" "-f" "49fae90809bcd9e01bc89d26fe5ab21ec6f9296d564059ee96b35204ab32c30d"`
[INFO] [stdout] 49fae90809bcd9e01bc89d26fe5ab21ec6f9296d564059ee96b35204ab32c30d