[INFO] crate glr-parser 0.0.1 is already in cache
[INFO] extracting crate glr-parser 0.0.1 into work/ex/clippy-test-run/sources/stable/reg/glr-parser/0.0.1
[INFO] extracting crate glr-parser 0.0.1 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/glr-parser/0.0.1
[INFO] validating manifest of glr-parser-0.0.1 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 glr-parser-0.0.1 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 glr-parser-0.0.1
[INFO] removed 0 missing tests
[INFO] finished frobbing glr-parser-0.0.1
[INFO] frobbed toml for glr-parser-0.0.1 written to work/ex/clippy-test-run/sources/stable/reg/glr-parser/0.0.1/Cargo.toml
[INFO] started frobbing glr-parser-0.0.1
[INFO] removed 0 missing tests
[INFO] finished frobbing glr-parser-0.0.1
[INFO] frobbed toml for glr-parser-0.0.1 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/glr-parser/0.0.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 glr-parser-0.0.1 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-4/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/glr-parser/0.0.1:/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] 9dcf6ebce48164087afc9e84a273849699ff2ad8b8dcfa9c7506c4b82d82e81a
[INFO] running `"docker" "start" "-a" "9dcf6ebce48164087afc9e84a273849699ff2ad8b8dcfa9c7506c4b82d82e81a"`
[INFO] [stderr]     Checking glr-parser v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/glr.rs:247:5
[INFO] [stderr]     |
[INFO] [stderr] 247 |     return offsets;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^ help: remove `return` as shown: `offsets`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/glr.rs:247:5
[INFO] [stderr]     |
[INFO] [stderr] 247 |     return offsets;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^ help: remove `return` as shown: `offsets`
[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: length comparison to zero
[INFO] [stderr]   --> src/glr_lex.rs:35:12
[INFO] [stderr]    |
[INFO] [stderr] 35 |         if re_string.len() > 0 { re_string.push('|'); }
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!re_string.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: single-character string constant used as pattern
[INFO] [stderr]   --> src/glr_lex.rs:46:37
[INFO] [stderr]    |
[INFO] [stderr] 46 |     for line in lex_re_string.split("\n") {
[INFO] [stderr]    |                                     ^^^^ help: try using a char instead: `'\n'`
[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: length comparison to zero
[INFO] [stderr]   --> src/glr_lex.rs:47:12
[INFO] [stderr]    |
[INFO] [stderr] 47 |         if line.trim().len() == 0 {continue}
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `line.trim().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 variable `index` is used as a loop counter. Consider using `for (index, item) in line.split("=").enumerate()` or similar iterators
[INFO] [stderr]   --> src/glr_lex.rs:50:21
[INFO] [stderr]    |
[INFO] [stderr] 50 |         for item in line.split("=") {
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::explicit_counter_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/glr_lex.rs:50:32
[INFO] [stderr]    |
[INFO] [stderr] 50 |         for item in line.split("=") {
[INFO] [stderr]    |                                ^^^ help: try using a char instead: `'='`
[INFO] [stderr]    |
[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: the function has a cyclomatic complexity of 26
[INFO] [stderr]    --> src/glr_grammar.rs:27:1
[INFO] [stderr]     |
[INFO] [stderr] 27  | / pub fn grammar_gen(_grammar_str: &str, terminal_tokens: Rc<Vec<String>>) -> Vec<Box<GrammarItem>>{
[INFO] [stderr] 28  | |     let grammar_str = _grammar_str.to_string() + "\n";
[INFO] [stderr] 29  | |     let mut ret: Vec<Box<GrammarItem>> = vec![];
[INFO] [stderr] 30  | |
[INFO] [stderr] ...   |
[INFO] [stderr] 371 | |     ret
[INFO] [stderr] 372 | | }
[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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/glr_grammar.rs:43:52
[INFO] [stderr]    |
[INFO] [stderr] 43 |         fn get_from_cache(orig: &Arc<Atom>, entry: &Vec<Vec<Arc<Atom>>>, cache: &HashMap<Arc<Atom>, Vec<Vec<Arc<Atom>>>>) -> Vec<Vec<Arc<Atom>>> {
[INFO] [stderr]    |                                                    ^^^^^^^^^^^^^^^^^^^^ help: change this to: `&[Vec<Arc<Atom>>]`
[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: called `.get_mut().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/glr_grammar.rs:66:37
[INFO] [stderr]    |
[INFO] [stderr] 66 |                                     new_entry.get_mut(index).unwrap().push(atom.clone());
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `new_entry[index]`
[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_mut().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/glr_grammar.rs:72:29
[INFO] [stderr]    |
[INFO] [stderr] 72 |                             new_entry.get_mut(index).unwrap().push(atom.clone());
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `new_entry[index]`
[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/glr_grammar.rs:83:12
[INFO] [stderr]    |
[INFO] [stderr] 83 |         if ret.len() > 0 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!ret.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: length comparison to zero
[INFO] [stderr]    --> src/glr_grammar.rs:171:20
[INFO] [stderr]     |
[INFO] [stderr] 171 |                 if word.len() > 0 {
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!word.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: length comparison to zero
[INFO] [stderr]    --> src/glr_grammar.rs:185:20
[INFO] [stderr]     |
[INFO] [stderr] 185 |                 if word.len() > 0 {
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!word.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: length comparison to zero
[INFO] [stderr]    --> src/glr_grammar.rs:223:20
[INFO] [stderr]     |
[INFO] [stderr] 223 |                 if word.len() > 0 { // same as above ' ' matching
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!word.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: length comparison to zero
[INFO] [stderr]    --> src/glr_grammar.rs:260:28
[INFO] [stderr]     |
[INFO] [stderr] 260 |                         if word.len() > 0 {
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!word.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: you seem to be trying to use `&Box<T>`. Consider using just `&T`
[INFO] [stderr]    --> src/glr_grammar.rs:378:90
[INFO] [stderr]     |
[INFO] [stderr] 378 |     fn gen_grammars(prod: Vec<Arc<Atom>>, counter: &mut HashMap<AtomPair, u16>, n_count: &mut Box<u16>) -> (Vec<Arc<Atom>>, Vec<GrammarItem>) {
[INFO] [stderr]     |                                                                                          ^^^^^^^^^^^^^ help: try: `&mut u16`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::borrowed_box)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#borrowed_box
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/glr_grammar.rs:482:12
[INFO] [stderr]     |
[INFO] [stderr] 482 |         if ret.len() == 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `ret.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: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/glr.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 | /         match grammars_hashmap.entry(symbol_name) {
[INFO] [stderr] 59 | |             Occupied(entry) => {
[INFO] [stderr] 60 | |                 entry.into_mut().push(Arc::new(*item));
[INFO] [stderr] 61 | |             },
[INFO] [stderr] 62 | |             _ => {}
[INFO] [stderr] 63 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 58 |         if let Occupied(entry) = grammars_hashmap.entry(symbol_name) {
[INFO] [stderr] 59 |     entry.into_mut().push(Arc::new(*item));
[INFO] [stderr] 60 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: this loop could be written as a `while let` loop
[INFO] [stderr]    --> src/glr.rs:75:5
[INFO] [stderr]     |
[INFO] [stderr] 75  | /     loop {
[INFO] [stderr] 76  | |         let current_symbol = match symbols.pop() {Some(x) => x, None => break};
[INFO] [stderr] 77  | | 
[INFO] [stderr] 78  | |         match *current_symbol {
[INFO] [stderr] ...   |
[INFO] [stderr] 102 | |         }
[INFO] [stderr] 103 | |     }
[INFO] [stderr]     | |_____^ help: try: `while let Some(x) = symbols.pop() { .. }`
[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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/glr.rs:166:37
[INFO] [stderr]     |
[INFO] [stderr] 166 |                         production: &Vec<Arc<Atom>>,
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^ help: change this to: `&[Arc<Atom>]`
[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: length comparison to zero
[INFO] [stderr]    --> src/glr.rs:182:40
[INFO] [stderr]     |
[INFO] [stderr] 182 |                                     if item.production.len() == 0 {
[INFO] [stderr]     |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `item.production.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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/glr.rs:217:37
[INFO] [stderr]     |
[INFO] [stderr] 217 |                         production: &Vec<Arc<Atom>>, 
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^ help: change this to: `&[Arc<Atom>]`
[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: length comparison to zero
[INFO] [stderr]    --> src/glr.rs:231:32
[INFO] [stderr]     |
[INFO] [stderr] 231 |                             if item.production.len() == 0 {
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `item.production.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: this loop could be written as a `while let` loop
[INFO] [stderr]    --> src/glr.rs:261:5
[INFO] [stderr]     |
[INFO] [stderr] 261 | /     loop {
[INFO] [stderr] 262 | |         let mut loop_item = match working_items.pop() {Some(x) => x, None => break};
[INFO] [stderr] 263 | | 
[INFO] [stderr] 264 | |         if !ret_cache.contains(&loop_item) {
[INFO] [stderr] ...   |
[INFO] [stderr] 332 | |  
[INFO] [stderr] 333 | |     }
[INFO] [stderr]     | |_____^ help: try: `while let Some(x) = working_items.pop() { .. }`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_loop
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/glr.rs:312:9
[INFO] [stderr]     |
[INFO] [stderr] 312 | /         match grammars_hashmap.get(&symbol_name) {
[INFO] [stderr] 313 | |            Some(grammer_items) => {
[INFO] [stderr] 314 | |                 for each_grammar in grammer_items.iter() {
[INFO] [stderr] 315 | |                     for each_production in get_real_productions(&grammars_hashmap, &each_grammar.production, &mut real_prod_cache).iter() {
[INFO] [stderr] ...   |
[INFO] [stderr] 330 | |             None => {}  
[INFO] [stderr] 331 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 312 |         if let Some(grammer_items) = grammars_hashmap.get(&symbol_name) {
[INFO] [stderr] 313 |     for each_grammar in grammer_items.iter() {
[INFO] [stderr] 314 |         for each_production in get_real_productions(&grammars_hashmap, &each_grammar.production, &mut real_prod_cache).iter() {
[INFO] [stderr] 315 |             for terminal_atom in terminals.iter() {
[INFO] [stderr] 316 |                 let lr_item = Arc::new(LRItem {
[INFO] [stderr] 317 |                     stacktop: 0,
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/glr.rs:367:13
[INFO] [stderr]     |
[INFO] [stderr] 367 |         cc: &Vec<Arc<LRItem>>, 
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^ help: change this to: `&[Arc<LRItem>]`
[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: parameter of type `HashMap` should be generalized over different hashers
[INFO] [stderr]    --> src/glr.rs:426:40
[INFO] [stderr]     |
[INFO] [stderr] 426 | pub fn create_table(grammars_hashmap: &HashMap<String, Vec<Arc<GrammarItem>>>, initial_item: Arc<LRItem>) -> (Vec<HashMap<String, HashSet<Arc<TableItem>>>>, Vec<HashMap<String, u32>>) {
[INFO] [stderr]     |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::implicit_hasher)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#implicit_hasher
[INFO] [stderr] help: consider adding a type parameter
[INFO] [stderr]     |
[INFO] [stderr] 426 | pub fn create_table<S: ::std::hash::BuildHasher>(grammars_hashmap: &HashMap<String, Vec<Arc<GrammarItem>>, S>, initial_item: Arc<LRItem>) -> (Vec<HashMap<String, HashSet<Arc<TableItem>>>>, Vec<HashMap<String, u32>>) {
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]    --> src/glr.rs:426:110
[INFO] [stderr]     |
[INFO] [stderr] 426 | pub fn create_table(grammars_hashmap: &HashMap<String, Vec<Arc<GrammarItem>>>, initial_item: Arc<LRItem>) -> (Vec<HashMap<String, HashSet<Arc<TableItem>>>>, Vec<HashMap<String, u32>>) {
[INFO] [stderr]     |                                                                                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::type_complexity)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/glr.rs:476:40
[INFO] [stderr]     |
[INFO] [stderr] 476 |                                     if item.production.len() > 0 {
[INFO] [stderr]     |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!item.production.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: length comparison to zero
[INFO] [stderr]   --> src/glr_lex.rs:35:12
[INFO] [stderr]    |
[INFO] [stderr] 35 |         if re_string.len() > 0 { re_string.push('|'); }
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!re_string.is_empty()`
[INFO] [stderr] warning: this loop could be written as a `while let` loop
[INFO] [stderr]    --> src/glr.rs:643:9
[INFO] [stderr]     |
[INFO] [stderr] 643 | /         loop {
[INFO] [stderr] 644 | |             match childrens.pop() {
[INFO] [stderr] 645 | |                 Some(n) => {
[INFO] [stderr] 646 | |                     match n {
[INFO] [stderr] ...   |
[INFO] [stderr] 657 | |             }
[INFO] [stderr] 658 | |         }
[INFO] [stderr]     | |_________^ help: try: `while let Some(n) = childrens.pop() { .. }`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_loop
[INFO] [stderr]    |
[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: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/glr.rs:646:21
[INFO] [stderr]     |
[INFO] [stderr] 646 | /                     match n {
[INFO] [stderr] 647 | |                         Some(mut x) => {
[INFO] [stderr] 648 | |                             for item in x {
[INFO] [stderr] 649 | |                                 let mut _item = item;
[INFO] [stderr] ...   |
[INFO] [stderr] 653 | |                         None => {}
[INFO] [stderr] 654 | |                     }
[INFO] [stderr]     | |_____________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 646 |                     if let Some(mut x) = n {
[INFO] [stderr] 647 |     for item in x {
[INFO] [stderr] 648 |         let mut _item = item;
[INFO] [stderr] 649 |         childrens.push(mem::replace(&mut _item.children, None));
[INFO] [stderr] 650 |     }
[INFO] [stderr] 651 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/glr_lex.rs:46:37
[INFO] [stderr]    |
[INFO] [stderr] 46 |     for line in lex_re_string.split("\n") {
[INFO] [stderr]    |                                     ^^^^ help: try using a char instead: `'\n'`
[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: length comparison to zero
[INFO] [stderr]   --> src/glr_lex.rs:47:12
[INFO] [stderr]    |
[INFO] [stderr] 47 |         if line.trim().len() == 0 {continue}
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `line.trim().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 variable `index` is used as a loop counter. Consider using `for (index, item) in line.split("=").enumerate()` or similar iterators
[INFO] [stderr]   --> src/glr_lex.rs:50:21
[INFO] [stderr]    |
[INFO] [stderr] 50 |         for item in line.split("=") {
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^
[INFO] [stderr] warning: parameter of type `HashMap` should be generalized over different hashers
[INFO] [stderr]    --> src/glr.rs:666:48
[INFO] [stderr]    |
[INFO] [stderr]     |
[INFO] [stderr] 666 | pub fn parse(words: Vec<Arc<Lex>>, action: Vec<HashMap<String, HashSet<Arc<TableItem>>>>, goto: Vec<HashMap<String, u32>>) -> Vec<VecDeque<Box<SyntaxTreeNode>>>{
[INFO] [stderr]     |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = note: #[warn(clippy::explicit_counter_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stderr] 
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#implicit_hasher
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/glr_lex.rs:50:32
[INFO] [stderr]    |
[INFO] [stderr] 50 |         for item in line.split("=") {
[INFO] [stderr]    |                                ^^^ help: try using a char instead: `'='`
[INFO] [stderr] help: consider adding a type parameter
[INFO] [stderr]     |
[INFO] [stderr] 666 | pub fn parse<S: ::std::hash::BuildHasher>(words: Vec<Arc<Lex>>, action: Vec<HashMap<String, HashSet<Arc<TableItem>>, S>>, goto: Vec<HashMap<String, u32>>) -> Vec<VecDeque<Box<SyntaxTreeNode>>>{
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]    |
[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: parameter of type `HashSet` should be generalized over different hashers
[INFO] [stderr]    --> src/glr.rs:666:64
[INFO] [stderr]     |
[INFO] [stderr] 666 | pub fn parse(words: Vec<Arc<Lex>>, action: Vec<HashMap<String, HashSet<Arc<TableItem>>>>, goto: Vec<HashMap<String, u32>>) -> Vec<VecDeque<Box<SyntaxTreeNode>>>{
[INFO] [stderr]     |                                                                ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#implicit_hasher
[INFO] [stderr] help: consider adding a type parameter
[INFO] [stderr]     |
[INFO] [stderr] 666 | pub fn parse<S: ::std::hash::BuildHasher>(words: Vec<Arc<Lex>>, action: Vec<HashMap<String, HashSet<Arc<TableItem>, S>>>, goto: Vec<HashMap<String, u32>>) -> Vec<VecDeque<Box<SyntaxTreeNode>>>{
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: parameter of type `HashMap` should be generalized over different hashers
[INFO] [stderr]    --> src/glr.rs:666:101
[INFO] [stderr]     |
[INFO] [stderr] 666 | pub fn parse(words: Vec<Arc<Lex>>, action: Vec<HashMap<String, HashSet<Arc<TableItem>>>>, goto: Vec<HashMap<String, u32>>) -> Vec<VecDeque<Box<SyntaxTreeNode>>>{
[INFO] [stderr]     |                                                                                                     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#implicit_hasher
[INFO] [stderr] help: consider adding a type parameter
[INFO] [stderr]     |
[INFO] [stderr] 666 | pub fn parse<S: ::std::hash::BuildHasher>(words: Vec<Arc<Lex>>, action: Vec<HashMap<String, HashSet<Arc<TableItem>>>>, goto: Vec<HashMap<String, u32, S>>) -> Vec<VecDeque<Box<SyntaxTreeNode>>>{
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                                                                                        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this function has too many arguments (14/7)
[INFO] [stderr]    --> src/glr.rs:668:5
[INFO] [stderr]     |
[INFO] [stderr] 668 | /     fn _parse(words: Vec<Arc<Lex>>, 
[INFO] [stderr] 669 | |             action: Vec<HashMap<String, HashSet<Arc<TableItem>>>>, 
[INFO] [stderr] 670 | |             goto: Vec<HashMap<String, u32>>, 
[INFO] [stderr] 671 | |             tree_stack: VecDeque<Box<SyntaxTreeNode>>,
[INFO] [stderr] ...   |
[INFO] [stderr] 853 | |         paralle_trees
[INFO] [stderr] 854 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::too_many_arguments)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#too_many_arguments
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]    --> src/glr.rs:704:23
[INFO] [stderr]     |
[INFO] [stderr] 704 |         let (tx, rx): (Sender<Vec<VecDeque<Box<SyntaxTreeNode>>>>, Receiver<Vec<VecDeque<Box<SyntaxTreeNode>>>>) = mpsc::channel();
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/glr.rs:720:44
[INFO] [stderr]     |
[INFO] [stderr] 720 |                         let __word_index = word_index.clone();
[INFO] [stderr]     |                                            ^^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `word_index`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/glr.rs:724:39
[INFO] [stderr]     |
[INFO] [stderr] 724 |                         let __state = state.clone();
[INFO] [stderr]     |                                       ^^^^^^^^^^^^^ help: try removing the `clone` call: `state`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] error: this loop never actually loops
[INFO] [stderr]    --> src/glr.rs:751:21
[INFO] [stderr]     |
[INFO] [stderr] 751 | /                     for item in table_items.iter() 
[INFO] [stderr] 752 | |                     {
[INFO] [stderr] 753 | |                         table_item = item.clone();
[INFO] [stderr] 754 | |                         break;
[INFO] [stderr] 755 | |                     }
[INFO] [stderr]     | |_____________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(clippy::never_loop)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#never_loop
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/glr.rs:762:29
[INFO] [stderr]     |
[INFO] [stderr] 762 | /                             match op_lr_item {
[INFO] [stderr] 763 | |                                 Some(_lr_item) =>{
[INFO] [stderr] 764 | |                                     let symbol = glr_grammar::get_atom_string(_lr_item.symbol.clone());
[INFO] [stderr] 765 | | 
[INFO] [stderr] ...   |
[INFO] [stderr] 810 | |                                 None => {}
[INFO] [stderr] 811 | |                             }
[INFO] [stderr]     | |_____________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 762 |                             if let Some(_lr_item) = op_lr_item {
[INFO] [stderr] 763 |     let symbol = glr_grammar::get_atom_string(_lr_item.symbol.clone());
[INFO] [stderr] 764 | 
[INFO] [stderr] 765 |     let mut _cut_count = 0u32;
[INFO] [stderr] 766 |     for item in _lr_item.production.iter() {
[INFO] [stderr] 767 |         state_stack.pop();
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/glr.rs:794:49
[INFO] [stderr]     |
[INFO] [stderr] 794 | /                                                 match tree_stack.pop_back() {Some(mut x) => {
[INFO] [stderr] 795 | |                                                     // x.parent = Some(new_tree_node.downgrade());
[INFO] [stderr] 796 | |                                                     tree_node_children.push_front(x);     
[INFO] [stderr] 797 | |                                                 }, None => {}}
[INFO] [stderr]     | |______________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 794 |                                                 if let Some(mut x) = tree_stack.pop_back() {
[INFO] [stderr] 795 |     // x.parent = Some(new_tree_node.downgrade());
[INFO] [stderr] 796 |     tree_node_children.push_front(x);     
[INFO] [stderr] 797 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: the function has a cyclomatic complexity of 26
[INFO] [stderr]    --> src/glr_grammar.rs:27:1
[INFO] [stderr]     |
[INFO] [stderr] 27  | / pub fn grammar_gen(_grammar_str: &str, terminal_tokens: Rc<Vec<String>>) -> Vec<Box<GrammarItem>>{
[INFO] [stderr] 28  | |     let grammar_str = _grammar_str.to_string() + "\n";
[INFO] [stderr] 29  | |     let mut ret: Vec<Box<GrammarItem>> = vec![];
[INFO] [stderr] 30  | |
[INFO] [stderr] ...   |
[INFO] [stderr] 371 | |     ret
[INFO] [stderr] 372 | | }
[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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/glr_grammar.rs:43:52
[INFO] [stderr]    |
[INFO] [stderr] 43 |         fn get_from_cache(orig: &Arc<Atom>, entry: &Vec<Vec<Arc<Atom>>>, cache: &HashMap<Arc<Atom>, Vec<Vec<Arc<Atom>>>>) -> Vec<Vec<Arc<Atom>>> {
[INFO] [stderr]    |                                                    ^^^^^^^^^^^^^^^^^^^^ help: change this to: `&[Vec<Arc<Atom>>]`
[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] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get_mut().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/glr_grammar.rs:66:37
[INFO] [stderr]    |
[INFO] [stderr] 66 |                                     new_entry.get_mut(index).unwrap().push(atom.clone());
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `new_entry[index]`
[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_mut().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/glr_grammar.rs:72:29
[INFO] [stderr]    |
[INFO] [stderr] 72 |                             new_entry.get_mut(index).unwrap().push(atom.clone());
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `new_entry[index]`
[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/glr_grammar.rs:83:12
[INFO] [stderr]    |
[INFO] [stderr] 83 |         if ret.len() > 0 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!ret.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] error: Could not compile `glr-parser`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/glr_grammar.rs:171:20
[INFO] [stderr]     |
[INFO] [stderr] 171 |                 if word.len() > 0 {
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!word.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: length comparison to zero
[INFO] [stderr]    --> src/glr_grammar.rs:185:20
[INFO] [stderr]     |
[INFO] [stderr] 185 |                 if word.len() > 0 {
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!word.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: length comparison to zero
[INFO] [stderr]    --> src/glr_grammar.rs:223:20
[INFO] [stderr]     |
[INFO] [stderr] 223 |                 if word.len() > 0 { // same as above ' ' matching
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!word.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: length comparison to zero
[INFO] [stderr]    --> src/glr_grammar.rs:260:28
[INFO] [stderr]     |
[INFO] [stderr] 260 |                         if word.len() > 0 {
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!word.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: you seem to be trying to use `&Box<T>`. Consider using just `&T`
[INFO] [stderr]    --> src/glr_grammar.rs:378:90
[INFO] [stderr]     |
[INFO] [stderr] 378 |     fn gen_grammars(prod: Vec<Arc<Atom>>, counter: &mut HashMap<AtomPair, u16>, n_count: &mut Box<u16>) -> (Vec<Arc<Atom>>, Vec<GrammarItem>) {
[INFO] [stderr]     |                                                                                          ^^^^^^^^^^^^^ help: try: `&mut u16`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::borrowed_box)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#borrowed_box
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/glr_grammar.rs:482:12
[INFO] [stderr]     |
[INFO] [stderr] 482 |         if ret.len() == 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `ret.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: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/glr.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 | /         match grammars_hashmap.entry(symbol_name) {
[INFO] [stderr] 59 | |             Occupied(entry) => {
[INFO] [stderr] 60 | |                 entry.into_mut().push(Arc::new(*item));
[INFO] [stderr] 61 | |             },
[INFO] [stderr] 62 | |             _ => {}
[INFO] [stderr] 63 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 58 |         if let Occupied(entry) = grammars_hashmap.entry(symbol_name) {
[INFO] [stderr] 59 |     entry.into_mut().push(Arc::new(*item));
[INFO] [stderr] 60 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: this loop could be written as a `while let` loop
[INFO] [stderr]    --> src/glr.rs:75:5
[INFO] [stderr]     |
[INFO] [stderr] 75  | /     loop {
[INFO] [stderr] 76  | |         let current_symbol = match symbols.pop() {Some(x) => x, None => break};
[INFO] [stderr] 77  | | 
[INFO] [stderr] 78  | |         match *current_symbol {
[INFO] [stderr] ...   |
[INFO] [stderr] 102 | |         }
[INFO] [stderr] 103 | |     }
[INFO] [stderr]     | |_____^ help: try: `while let Some(x) = symbols.pop() { .. }`
[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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/glr.rs:166:37
[INFO] [stderr]     |
[INFO] [stderr] 166 |                         production: &Vec<Arc<Atom>>,
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^ help: change this to: `&[Arc<Atom>]`
[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: length comparison to zero
[INFO] [stderr]    --> src/glr.rs:182:40
[INFO] [stderr]     |
[INFO] [stderr] 182 |                                     if item.production.len() == 0 {
[INFO] [stderr]     |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `item.production.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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/glr.rs:217:37
[INFO] [stderr]     |
[INFO] [stderr] 217 |                         production: &Vec<Arc<Atom>>, 
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^ help: change this to: `&[Arc<Atom>]`
[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: length comparison to zero
[INFO] [stderr]    --> src/glr.rs:231:32
[INFO] [stderr]     |
[INFO] [stderr] 231 |                             if item.production.len() == 0 {
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `item.production.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: this loop could be written as a `while let` loop
[INFO] [stderr]    --> src/glr.rs:261:5
[INFO] [stderr]     |
[INFO] [stderr] 261 | /     loop {
[INFO] [stderr] 262 | |         let mut loop_item = match working_items.pop() {Some(x) => x, None => break};
[INFO] [stderr] 263 | | 
[INFO] [stderr] 264 | |         if !ret_cache.contains(&loop_item) {
[INFO] [stderr] ...   |
[INFO] [stderr] 332 | |  
[INFO] [stderr] 333 | |     }
[INFO] [stderr]     | |_____^ help: try: `while let Some(x) = working_items.pop() { .. }`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_loop
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/glr.rs:312:9
[INFO] [stderr]     |
[INFO] [stderr] 312 | /         match grammars_hashmap.get(&symbol_name) {
[INFO] [stderr] 313 | |            Some(grammer_items) => {
[INFO] [stderr] 314 | |                 for each_grammar in grammer_items.iter() {
[INFO] [stderr] 315 | |                     for each_production in get_real_productions(&grammars_hashmap, &each_grammar.production, &mut real_prod_cache).iter() {
[INFO] [stderr] ...   |
[INFO] [stderr] 330 | |             None => {}  
[INFO] [stderr] 331 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 312 |         if let Some(grammer_items) = grammars_hashmap.get(&symbol_name) {
[INFO] [stderr] 313 |     for each_grammar in grammer_items.iter() {
[INFO] [stderr] 314 |         for each_production in get_real_productions(&grammars_hashmap, &each_grammar.production, &mut real_prod_cache).iter() {
[INFO] [stderr] 315 |             for terminal_atom in terminals.iter() {
[INFO] [stderr] 316 |                 let lr_item = Arc::new(LRItem {
[INFO] [stderr] 317 |                     stacktop: 0,
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/glr.rs:367:13
[INFO] [stderr]     |
[INFO] [stderr] 367 |         cc: &Vec<Arc<LRItem>>, 
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^ help: change this to: `&[Arc<LRItem>]`
[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: parameter of type `HashMap` should be generalized over different hashers
[INFO] [stderr]    --> src/glr.rs:426:40
[INFO] [stderr]     |
[INFO] [stderr] 426 | pub fn create_table(grammars_hashmap: &HashMap<String, Vec<Arc<GrammarItem>>>, initial_item: Arc<LRItem>) -> (Vec<HashMap<String, HashSet<Arc<TableItem>>>>, Vec<HashMap<String, u32>>) {
[INFO] [stderr]     |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::implicit_hasher)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#implicit_hasher
[INFO] [stderr] help: consider adding a type parameter
[INFO] [stderr]     |
[INFO] [stderr] 426 | pub fn create_table<S: ::std::hash::BuildHasher>(grammars_hashmap: &HashMap<String, Vec<Arc<GrammarItem>>, S>, initial_item: Arc<LRItem>) -> (Vec<HashMap<String, HashSet<Arc<TableItem>>>>, Vec<HashMap<String, u32>>) {
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]    --> src/glr.rs:426:110
[INFO] [stderr]     |
[INFO] [stderr] 426 | pub fn create_table(grammars_hashmap: &HashMap<String, Vec<Arc<GrammarItem>>>, initial_item: Arc<LRItem>) -> (Vec<HashMap<String, HashSet<Arc<TableItem>>>>, Vec<HashMap<String, u32>>) {
[INFO] [stderr]     |                                                                                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::type_complexity)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/glr.rs:476:40
[INFO] [stderr]     |
[INFO] [stderr] 476 |                                     if item.production.len() > 0 {
[INFO] [stderr]     |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!item.production.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: this loop could be written as a `while let` loop
[INFO] [stderr]    --> src/glr.rs:643:9
[INFO] [stderr]     |
[INFO] [stderr] 643 | /         loop {
[INFO] [stderr] 644 | |             match childrens.pop() {
[INFO] [stderr] 645 | |                 Some(n) => {
[INFO] [stderr] 646 | |                     match n {
[INFO] [stderr] ...   |
[INFO] [stderr] 657 | |             }
[INFO] [stderr] 658 | |         }
[INFO] [stderr]     | |_________^ help: try: `while let Some(n) = childrens.pop() { .. }`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_loop
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/glr.rs:646:21
[INFO] [stderr]     |
[INFO] [stderr] 646 | /                     match n {
[INFO] [stderr] 647 | |                         Some(mut x) => {
[INFO] [stderr] 648 | |                             for item in x {
[INFO] [stderr] 649 | |                                 let mut _item = item;
[INFO] [stderr] ...   |
[INFO] [stderr] 653 | |                         None => {}
[INFO] [stderr] 654 | |                     }
[INFO] [stderr]     | |_____________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 646 |                     if let Some(mut x) = n {
[INFO] [stderr] 647 |     for item in x {
[INFO] [stderr] 648 |         let mut _item = item;
[INFO] [stderr] 649 |         childrens.push(mem::replace(&mut _item.children, None));
[INFO] [stderr] 650 |     }
[INFO] [stderr] 651 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: parameter of type `HashMap` should be generalized over different hashers
[INFO] [stderr]    --> src/glr.rs:666:48
[INFO] [stderr]     |
[INFO] [stderr] 666 | pub fn parse(words: Vec<Arc<Lex>>, action: Vec<HashMap<String, HashSet<Arc<TableItem>>>>, goto: Vec<HashMap<String, u32>>) -> Vec<VecDeque<Box<SyntaxTreeNode>>>{
[INFO] [stderr]     |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#implicit_hasher
[INFO] [stderr] help: consider adding a type parameter
[INFO] [stderr]     |
[INFO] [stderr] 666 | pub fn parse<S: ::std::hash::BuildHasher>(words: Vec<Arc<Lex>>, action: Vec<HashMap<String, HashSet<Arc<TableItem>>, S>>, goto: Vec<HashMap<String, u32>>) -> Vec<VecDeque<Box<SyntaxTreeNode>>>{
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: parameter of type `HashSet` should be generalized over different hashers
[INFO] [stderr]    --> src/glr.rs:666:64
[INFO] [stderr]     |
[INFO] [stderr] 666 | pub fn parse(words: Vec<Arc<Lex>>, action: Vec<HashMap<String, HashSet<Arc<TableItem>>>>, goto: Vec<HashMap<String, u32>>) -> Vec<VecDeque<Box<SyntaxTreeNode>>>{
[INFO] [stderr]     |                                                                ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#implicit_hasher
[INFO] [stderr] help: consider adding a type parameter
[INFO] [stderr]     |
[INFO] [stderr] 666 | pub fn parse<S: ::std::hash::BuildHasher>(words: Vec<Arc<Lex>>, action: Vec<HashMap<String, HashSet<Arc<TableItem>, S>>>, goto: Vec<HashMap<String, u32>>) -> Vec<VecDeque<Box<SyntaxTreeNode>>>{
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: parameter of type `HashMap` should be generalized over different hashers
[INFO] [stderr]    --> src/glr.rs:666:101
[INFO] [stderr]     |
[INFO] [stderr] 666 | pub fn parse(words: Vec<Arc<Lex>>, action: Vec<HashMap<String, HashSet<Arc<TableItem>>>>, goto: Vec<HashMap<String, u32>>) -> Vec<VecDeque<Box<SyntaxTreeNode>>>{
[INFO] [stderr]     |                                                                                                     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#implicit_hasher
[INFO] [stderr] help: consider adding a type parameter
[INFO] [stderr]     |
[INFO] [stderr] 666 | pub fn parse<S: ::std::hash::BuildHasher>(words: Vec<Arc<Lex>>, action: Vec<HashMap<String, HashSet<Arc<TableItem>>>>, goto: Vec<HashMap<String, u32, S>>) -> Vec<VecDeque<Box<SyntaxTreeNode>>>{
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                                                                                        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this function has too many arguments (14/7)
[INFO] [stderr]    --> src/glr.rs:668:5
[INFO] [stderr]     |
[INFO] [stderr] 668 | /     fn _parse(words: Vec<Arc<Lex>>, 
[INFO] [stderr] 669 | |             action: Vec<HashMap<String, HashSet<Arc<TableItem>>>>, 
[INFO] [stderr] 670 | |             goto: Vec<HashMap<String, u32>>, 
[INFO] [stderr] 671 | |             tree_stack: VecDeque<Box<SyntaxTreeNode>>,
[INFO] [stderr] ...   |
[INFO] [stderr] 853 | |         paralle_trees
[INFO] [stderr] 854 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::too_many_arguments)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#too_many_arguments
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]    --> src/glr.rs:704:23
[INFO] [stderr]     |
[INFO] [stderr] 704 |         let (tx, rx): (Sender<Vec<VecDeque<Box<SyntaxTreeNode>>>>, Receiver<Vec<VecDeque<Box<SyntaxTreeNode>>>>) = mpsc::channel();
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/glr.rs:720:44
[INFO] [stderr]     |
[INFO] [stderr] 720 |                         let __word_index = word_index.clone();
[INFO] [stderr]     |                                            ^^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `word_index`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/glr.rs:724:39
[INFO] [stderr]     |
[INFO] [stderr] 724 |                         let __state = state.clone();
[INFO] [stderr]     |                                       ^^^^^^^^^^^^^ help: try removing the `clone` call: `state`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] error: this loop never actually loops
[INFO] [stderr]    --> src/glr.rs:751:21
[INFO] [stderr]     |
[INFO] [stderr] 751 | /                     for item in table_items.iter() 
[INFO] [stderr] 752 | |                     {
[INFO] [stderr] 753 | |                         table_item = item.clone();
[INFO] [stderr] 754 | |                         break;
[INFO] [stderr] 755 | |                     }
[INFO] [stderr]     | |_____________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(clippy::never_loop)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#never_loop
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/glr.rs:762:29
[INFO] [stderr]     |
[INFO] [stderr] 762 | /                             match op_lr_item {
[INFO] [stderr] 763 | |                                 Some(_lr_item) =>{
[INFO] [stderr] 764 | |                                     let symbol = glr_grammar::get_atom_string(_lr_item.symbol.clone());
[INFO] [stderr] 765 | | 
[INFO] [stderr] ...   |
[INFO] [stderr] 810 | |                                 None => {}
[INFO] [stderr] 811 | |                             }
[INFO] [stderr]     | |_____________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 762 |                             if let Some(_lr_item) = op_lr_item {
[INFO] [stderr] 763 |     let symbol = glr_grammar::get_atom_string(_lr_item.symbol.clone());
[INFO] [stderr] 764 | 
[INFO] [stderr] 765 |     let mut _cut_count = 0u32;
[INFO] [stderr] 766 |     for item in _lr_item.production.iter() {
[INFO] [stderr] 767 |         state_stack.pop();
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/glr.rs:794:49
[INFO] [stderr]     |
[INFO] [stderr] 794 | /                                                 match tree_stack.pop_back() {Some(mut x) => {
[INFO] [stderr] 795 | |                                                     // x.parent = Some(new_tree_node.downgrade());
[INFO] [stderr] 796 | |                                                     tree_node_children.push_front(x);     
[INFO] [stderr] 797 | |                                                 }, None => {}}
[INFO] [stderr]     | |______________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 794 |                                                 if let Some(mut x) = tree_stack.pop_back() {
[INFO] [stderr] 795 |     // x.parent = Some(new_tree_node.downgrade());
[INFO] [stderr] 796 |     tree_node_children.push_front(x);     
[INFO] [stderr] 797 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `glr-parser`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "9dcf6ebce48164087afc9e84a273849699ff2ad8b8dcfa9c7506c4b82d82e81a"`
[INFO] running `"docker" "rm" "-f" "9dcf6ebce48164087afc9e84a273849699ff2ad8b8dcfa9c7506c4b82d82e81a"`
[INFO] [stdout] 9dcf6ebce48164087afc9e84a273849699ff2ad8b8dcfa9c7506c4b82d82e81a