[INFO] crate generic_regex 0.1.0 is already in cache
[INFO] extracting crate generic_regex 0.1.0 into work/ex/clippy-test-run/sources/stable/reg/generic_regex/0.1.0
[INFO] extracting crate generic_regex 0.1.0 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/generic_regex/0.1.0
[INFO] validating manifest of generic_regex-0.1.0 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 generic_regex-0.1.0 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 generic_regex-0.1.0
[INFO] finished frobbing generic_regex-0.1.0
[INFO] frobbed toml for generic_regex-0.1.0 written to work/ex/clippy-test-run/sources/stable/reg/generic_regex/0.1.0/Cargo.toml
[INFO] started frobbing generic_regex-0.1.0
[INFO] finished frobbing generic_regex-0.1.0
[INFO] frobbed toml for generic_regex-0.1.0 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/generic_regex/0.1.0/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 generic_regex-0.1.0 against stable+rustflags=-Dclippy::into_iter_on_array for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-2/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/generic_regex/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dclippy::into_iter_on_array" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4c06d56b4421990a5184fa52f363b7d571c01416c485b30642b802b314d9edef
[INFO] running `"docker" "start" "-a" "4c06d56b4421990a5184fa52f363b7d571c01416c485b30642b802b314d9edef"`
[INFO] [stderr]     Checking generic_regex v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]    --> src/lib.rs:930:9
[INFO] [stderr]     |
[INFO] [stderr] 930 |                                   {
[INFO] [stderr]     |  _________________________________^
[INFO] [stderr] 931 | |                                     if self.flushing>0
[INFO] [stderr] 932 | |                                     {
[INFO] [stderr] 933 | |                                         self.insert=Some(ins);
[INFO] [stderr] ...   |
[INFO] [stderr] 940 | |                                     }
[INFO] [stderr] 941 | |                                 }
[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] 930 |                                 if self.flushing>0
[INFO] [stderr] 931 | {
[INFO] [stderr] 932 |     self.insert=Some(ins);
[INFO] [stderr] 933 |     self.flushing-=1;
[INFO] [stderr] 934 |     return self.source_flush.next();
[INFO] [stderr] 935 | }
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]     --> src/lib.rs:1098:7
[INFO] [stderr]      |
[INFO] [stderr] 1098 |                           {
[INFO] [stderr]      |  _________________________^
[INFO] [stderr] 1099 | |                             if self.flushing>0
[INFO] [stderr] 1100 | |                             {
[INFO] [stderr] 1101 | |                                 self.insert=Some(ins);
[INFO] [stderr] ...    |
[INFO] [stderr] 1111 | |                             }
[INFO] [stderr] 1112 | |                         }
[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] 1098 |                         if self.flushing>0
[INFO] [stderr] 1099 | {
[INFO] [stderr] 1100 |     self.insert=Some(ins);
[INFO] [stderr] 1101 |     self.flushing-=1;
[INFO] [stderr] 1102 |     //return self.source_flush.next();
[INFO] [stderr] 1103 |     self.source_flush+=1;
[INFO] [stderr]    ...
[INFO] [stderr] 
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]    --> src/lib.rs:930:9
[INFO] [stderr]     |
[INFO] [stderr] 930 |                                   {
[INFO] [stderr]     |  _________________________________^
[INFO] [stderr] 931 | |                                     if self.flushing>0
[INFO] [stderr] 932 | |                                     {
[INFO] [stderr] 933 | |                                         self.insert=Some(ins);
[INFO] [stderr] ...   |
[INFO] [stderr] 940 | |                                     }
[INFO] [stderr] 941 | |                                 }
[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] 930 |                                 if self.flushing>0
[INFO] [stderr] 931 | {
[INFO] [stderr] 932 |     self.insert=Some(ins);
[INFO] [stderr] 933 |     self.flushing-=1;
[INFO] [stderr] 934 |     return self.source_flush.next();
[INFO] [stderr] 935 | }
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]     --> src/lib.rs:1098:7
[INFO] [stderr]      |
[INFO] [stderr] 1098 |                           {
[INFO] [stderr]      |  _________________________^
[INFO] [stderr] 1099 | |                             if self.flushing>0
[INFO] [stderr] 1100 | |                             {
[INFO] [stderr] 1101 | |                                 self.insert=Some(ins);
[INFO] [stderr] ...    |
[INFO] [stderr] 1111 | |                             }
[INFO] [stderr] 1112 | |                         }
[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] 1098 |                         if self.flushing>0
[INFO] [stderr] 1099 | {
[INFO] [stderr] 1100 |     self.insert=Some(ins);
[INFO] [stderr] 1101 |     self.flushing-=1;
[INFO] [stderr] 1102 |     //return self.source_flush.next();
[INFO] [stderr] 1103 |     self.source_flush+=1;
[INFO] [stderr]    ...
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/lib.rs:28:3
[INFO] [stderr]    |
[INFO] [stderr] 28 |           match self
[INFO] [stderr]    |  _________^
[INFO] [stderr] 29 | |         {
[INFO] [stderr] 30 | |             &EmptySet => match other
[INFO] [stderr] 31 | |             {
[INFO] [stderr] ...  |
[INFO] [stderr] 84 | |             },
[INFO] [stderr] 85 | |         }
[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] 28 |         match *self
[INFO] [stderr] 29 |         {
[INFO] [stderr] 30 |             EmptySet => match other
[INFO] [stderr] 31 |             {
[INFO] [stderr] 32 |                 &EmptySet => Ordering::Equal,
[INFO] [stderr] 33 |                 _ => Ordering::Less,
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/lib.rs:30:17
[INFO] [stderr]    |
[INFO] [stderr] 30 |               &EmptySet => match other
[INFO] [stderr]    |  __________________________^
[INFO] [stderr] 31 | |             {
[INFO] [stderr] 32 | |                 &EmptySet => Ordering::Equal,
[INFO] [stderr] 33 | |                 _ => Ordering::Less,
[INFO] [stderr] 34 | |             }
[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] 30 |             &EmptySet => match *other
[INFO] [stderr] 31 |             {
[INFO] [stderr] 32 |                 EmptySet => Ordering::Equal,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/lib.rs:35:20
[INFO] [stderr]    |
[INFO] [stderr] 35 |               &EmptyString => match other
[INFO] [stderr]    |  _____________________________^
[INFO] [stderr] 36 | |             {
[INFO] [stderr] 37 | |                 &EmptySet => Ordering::Greater,
[INFO] [stderr] 38 | |                 &EmptyString => Ordering::Equal,
[INFO] [stderr] 39 | |                 _ => Ordering::Less,
[INFO] [stderr] 40 | |             },
[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] 35 |             &EmptyString => match *other
[INFO] [stderr] 36 |             {
[INFO] [stderr] 37 |                 EmptySet => Ordering::Greater,
[INFO] [stderr] 38 |                 EmptyString => Ordering::Equal,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/lib.rs:41:24
[INFO] [stderr]    |
[INFO] [stderr] 41 |               &Single(ref lit) => match other
[INFO] [stderr]    |  _________________________________^
[INFO] [stderr] 42 | |             {
[INFO] [stderr] 43 | |                 &EmptySet => Ordering::Greater,
[INFO] [stderr] 44 | |                 &EmptyString => Ordering::Greater,
[INFO] [stderr] 45 | |                 &Single(ref lit_other) => lit.cmp(lit_other),
[INFO] [stderr] 46 | |                 _ => Ordering::Less,
[INFO] [stderr] 47 | |             },
[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] 41 |             &Single(ref lit) => match *other
[INFO] [stderr] 42 |             {
[INFO] [stderr] 43 |                 EmptySet => Ordering::Greater,
[INFO] [stderr] 44 |                 EmptyString => Ordering::Greater,
[INFO] [stderr] 45 |                 Single(ref lit_other) => lit.cmp(lit_other),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/lib.rs:48:27
[INFO] [stderr]    |
[INFO] [stderr] 48 |               &Disjunction(ref v) => match other
[INFO] [stderr]    |  ____________________________________^
[INFO] [stderr] 49 | |             {
[INFO] [stderr] 50 | |                 &EmptySet => Ordering::Greater,
[INFO] [stderr] 51 | |                 &EmptyString => Ordering::Greater,
[INFO] [stderr] ...  |
[INFO] [stderr] 54 | |                 _ => Ordering::Less,
[INFO] [stderr] 55 | |             },
[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] 48 |             &Disjunction(ref v) => match *other
[INFO] [stderr] 49 |             {
[INFO] [stderr] 50 |                 EmptySet => Ordering::Greater,
[INFO] [stderr] 51 |                 EmptyString => Ordering::Greater,
[INFO] [stderr] 52 |                 Single(_) => Ordering::Greater, 
[INFO] [stderr] 53 |                 Disjunction(ref v_other) => v.cmp(v_other),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/lib.rs:56:29
[INFO] [stderr]    |
[INFO] [stderr] 56 |               &Concatenation(ref v) => match other
[INFO] [stderr]    |  ______________________________________^
[INFO] [stderr] 57 | |             {
[INFO] [stderr] 58 | |                 &EmptySet => Ordering::Greater,
[INFO] [stderr] 59 | |                 &EmptyString => Ordering::Greater,
[INFO] [stderr] ...  |
[INFO] [stderr] 63 | |                 _ => Ordering::Less,
[INFO] [stderr] 64 | |             },
[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] 56 |             &Concatenation(ref v) => match *other
[INFO] [stderr] 57 |             {
[INFO] [stderr] 58 |                 EmptySet => Ordering::Greater,
[INFO] [stderr] 59 |                 EmptyString => Ordering::Greater,
[INFO] [stderr] 60 |                 Single(_) => Ordering::Greater, 
[INFO] [stderr] 61 |                 Disjunction(_) => Ordering::Greater,
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/lib.rs:65:26
[INFO] [stderr]    |
[INFO] [stderr] 65 |               &KleeneStar(ref e) => match other
[INFO] [stderr]    |  ___________________________________^
[INFO] [stderr] 66 | |             {
[INFO] [stderr] 67 | |                 &EmptySet => Ordering::Greater,
[INFO] [stderr] 68 | |                 &EmptyString => Ordering::Greater,
[INFO] [stderr] ...  |
[INFO] [stderr] 73 | |                 _ => Ordering::Less,
[INFO] [stderr] 74 | |             },
[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] 65 |             &KleeneStar(ref e) => match *other
[INFO] [stderr] 66 |             {
[INFO] [stderr] 67 |                 EmptySet => Ordering::Greater,
[INFO] [stderr] 68 |                 EmptyString => Ordering::Greater,
[INFO] [stderr] 69 |                 Single(_) => Ordering::Greater, 
[INFO] [stderr] 70 |                 Disjunction(_) => Ordering::Greater,
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/lib.rs:75:26
[INFO] [stderr]    |
[INFO] [stderr] 75 |               &Complement(ref e) => match other
[INFO] [stderr]    |  ___________________________________^
[INFO] [stderr] 76 | |             {
[INFO] [stderr] 77 | |                 &EmptySet => Ordering::Greater,
[INFO] [stderr] 78 | |                 &EmptyString => Ordering::Greater,
[INFO] [stderr] ...  |
[INFO] [stderr] 83 | |                 &Complement(ref e_other) => e.cmp(e_other),
[INFO] [stderr] 84 | |             },
[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] 75 |             &Complement(ref e) => match *other
[INFO] [stderr] 76 |             {
[INFO] [stderr] 77 |                 EmptySet => Ordering::Greater,
[INFO] [stderr] 78 |                 EmptyString => Ordering::Greater,
[INFO] [stderr] 79 |                 Single(_) => Ordering::Greater, 
[INFO] [stderr] 80 |                 Disjunction(_) => Ordering::Greater,
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/lib.rs:115:3
[INFO] [stderr]     |
[INFO] [stderr] 115 |           match self
[INFO] [stderr]     |  _________^
[INFO] [stderr] 116 | |         {
[INFO] [stderr] 117 | |             &EmptySet => EmptySet,
[INFO] [stderr] 118 | |             &EmptyString => EmptyString,
[INFO] [stderr] ...   |
[INFO] [stderr] 178 | |             &Complement(ref v) => Complement(v.clone()),
[INFO] [stderr] 179 | |         }
[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] 115 |         match *self
[INFO] [stderr] 116 |         {
[INFO] [stderr] 117 |             EmptySet => EmptySet,
[INFO] [stderr] 118 |             EmptyString => EmptyString,
[INFO] [stderr] 119 |             Single(ref lit) => Single(lit.clone()),
[INFO] [stderr] 120 |             Disjunction(ref v) =>
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/lib.rs:184:3
[INFO] [stderr]     |
[INFO] [stderr] 184 |           match self
[INFO] [stderr]     |  _________^
[INFO] [stderr] 185 | |         {
[INFO] [stderr] 186 | |             &EmptySet => String::from("@emptyset"),
[INFO] [stderr] 187 | |             &EmptyString => String::from(""),
[INFO] [stderr] ...   |
[INFO] [stderr] 209 | |             &Complement(ref v) => String::from("[^")+&v.iter().map(t_to_string).collect::<String>()+&String::from("]"),
[INFO] [stderr] 210 | |         }
[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] 184 |         match *self
[INFO] [stderr] 185 |         {
[INFO] [stderr] 186 |             EmptySet => String::from("@emptyset"),
[INFO] [stderr] 187 |             EmptyString => String::from(""),
[INFO] [stderr] 188 |             Single(ref lit) => t_to_string(&lit),
[INFO] [stderr] 189 |             Disjunction(ref v) =>
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/lib.rs:214:3
[INFO] [stderr]     |
[INFO] [stderr] 214 |           match self
[INFO] [stderr]     |  _________^
[INFO] [stderr] 215 | |         {
[INFO] [stderr] 216 | |             &EmptySet => false,
[INFO] [stderr] 217 | |             &EmptyString => true,
[INFO] [stderr] ...   |
[INFO] [stderr] 242 | |             &Complement(_) => false,
[INFO] [stderr] 243 | |         }
[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] 214 |         match *self
[INFO] [stderr] 215 |         {
[INFO] [stderr] 216 |             EmptySet => false,
[INFO] [stderr] 217 |             EmptyString => true,
[INFO] [stderr] 218 |             Single(_) => false,
[INFO] [stderr] 219 |             Disjunction(ref v) =>
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/lib.rs:247:3
[INFO] [stderr]     |
[INFO] [stderr] 247 |           match self
[INFO] [stderr]     |  _________^
[INFO] [stderr] 248 | |         {
[INFO] [stderr] 249 | |             &EmptySet => EmptySet,
[INFO] [stderr] 250 | |             &EmptyString => EmptySet,
[INFO] [stderr] ...   |
[INFO] [stderr] 292 | |             },
[INFO] [stderr] 293 | |         }
[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] 247 |         match *self
[INFO] [stderr] 248 |         {
[INFO] [stderr] 249 |             EmptySet => EmptySet,
[INFO] [stderr] 250 |             EmptyString => EmptySet,
[INFO] [stderr] 251 |             Single(ref lit) => if *lit==*argument { EmptyString } else { EmptySet },
[INFO] [stderr] 252 |             Disjunction(ref v) => Disjunction(v.iter().map(|x|Rc::new(x.simple_derivative(argument))).collect()),
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/lib.rs:268:11
[INFO] [stderr]     |
[INFO] [stderr] 268 |                 while w.len()>0
[INFO] [stderr]     |                       ^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!w.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: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/lib.rs:301:3
[INFO] [stderr]     |
[INFO] [stderr] 301 |           match self
[INFO] [stderr]     |  _________^
[INFO] [stderr] 302 | |         {
[INFO] [stderr] 303 | |             &EmptySet => EmptySet,
[INFO] [stderr] 304 | |             &EmptyString => EmptyString,
[INFO] [stderr] ...   |
[INFO] [stderr] 309 | |             &Complement(ref v) => Complement(v.iter().map(f).collect()),
[INFO] [stderr] 310 | |         }
[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] 301 |         match *self
[INFO] [stderr] 302 |         {
[INFO] [stderr] 303 |             EmptySet => EmptySet,
[INFO] [stderr] 304 |             EmptyString => EmptyString,
[INFO] [stderr] 305 |             Single(ref lit) => Single(f(lit)),
[INFO] [stderr] 306 |             Disjunction(ref v) => Disjunction(v.iter().map(|x|Rc::new(x.map(f))).collect()),
[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/lib.rs:312:23
[INFO] [stderr]     |
[INFO] [stderr] 312 |     fn firsts(&self, all:&Vec<T>) -> BTreeSet<T>
[INFO] [stderr]     |                          ^^^^^^^ help: change this to: `&[T]`
[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: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/lib.rs:315:3
[INFO] [stderr]     |
[INFO] [stderr] 315 |           match self
[INFO] [stderr]     |  _________^
[INFO] [stderr] 316 | |         {
[INFO] [stderr] 317 | |             &EmptySet => (),
[INFO] [stderr] 318 | |             &EmptyString => (),
[INFO] [stderr] ...   |
[INFO] [stderr] 357 | |             },
[INFO] [stderr] 358 | |         };
[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] 315 |         match *self
[INFO] [stderr] 316 |         {
[INFO] [stderr] 317 |             EmptySet => (),
[INFO] [stderr] 318 |             EmptyString => (),
[INFO] [stderr] 319 |             Single(ref lit) =>
[INFO] [stderr] 320 |             {
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/lib.rs:456:32
[INFO] [stderr]     |
[INFO] [stderr] 456 |                               stack.iter().filter(|&x|match x
[INFO] [stderr]     |  _____________________________________________________^
[INFO] [stderr] 457 | |                             {
[INFO] [stderr] 458 | |                                 &RegexCharStackElem::Expression(_) => true,
[INFO] [stderr] 459 | |                                 _ => false,
[INFO] [stderr] 460 | |                             }).map(|x|match x
[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] 456 |                             stack.iter().filter(|&x|match *x
[INFO] [stderr] 457 |                             {
[INFO] [stderr] 458 |                                 RegexCharStackElem::Expression(_) => true,
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/lib.rs:460:18
[INFO] [stderr]     |
[INFO] [stderr] 460 |                               }).map(|x|match x
[INFO] [stderr]     |  _______________________________________^
[INFO] [stderr] 461 | |                             {
[INFO] [stderr] 462 | |                                 &RegexCharStackElem::Expression(ref e) => e.clone(),
[INFO] [stderr] 463 | |                                 _ => panic!("Ending"),
[INFO] [stderr] 464 | |                             }).collect());
[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] 460 |                             }).map(|x|match *x
[INFO] [stderr] 461 |                             {
[INFO] [stderr] 462 |                                 RegexCharStackElem::Expression(ref e) => e.clone(),
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/lib.rs:469:32
[INFO] [stderr]     |
[INFO] [stderr] 469 |                           stack[i..].iter().map(|x|match x
[INFO] [stderr]     |  __________________________________________________^
[INFO] [stderr] 470 | |                         {
[INFO] [stderr] 471 | |                             &RegexCharStackElem::Expression(ref e) => e.clone(),
[INFO] [stderr] 472 | |                             _ => panic!("Ending"),
[INFO] [stderr] 473 | |                         }).collect());
[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] 469 |                         stack[i..].iter().map(|x|match *x
[INFO] [stderr] 470 |                         {
[INFO] [stderr] 471 |                             RegexCharStackElem::Expression(ref e) => e.clone(),
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/lib.rs:497:32
[INFO] [stderr]     |
[INFO] [stderr] 497 |                           stack[i..].iter().map(|x|match x
[INFO] [stderr]     |  __________________________________________________^
[INFO] [stderr] 498 | |                         {
[INFO] [stderr] 499 | |                             &RegexCharStackElem::Expression(ref e) => e.clone(),
[INFO] [stderr] 500 | |                             _ => panic!("Bar"),
[INFO] [stderr] 501 | |                         }).collect());
[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] 497 |                         stack[i..].iter().map(|x|match *x
[INFO] [stderr] 498 |                         {
[INFO] [stderr] 499 |                             RegexCharStackElem::Expression(ref e) => e.clone(),
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/lib.rs:560:37
[INFO] [stderr]     |
[INFO] [stderr] 560 |                               stack[i..].iter().filter(|&x|match x
[INFO] [stderr]     |  __________________________________________________________^
[INFO] [stderr] 561 | |                             {
[INFO] [stderr] 562 | |                                 &RegexCharStackElem::Expression(_) => true,
[INFO] [stderr] 563 | |                                 _ => false,
[INFO] [stderr] 564 | |                             }).map(|x|match x
[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] 560 |                             stack[i..].iter().filter(|&x|match *x
[INFO] [stderr] 561 |                             {
[INFO] [stderr] 562 |                                 RegexCharStackElem::Expression(_) => true,
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/lib.rs:564:18
[INFO] [stderr]     |
[INFO] [stderr] 564 |                               }).map(|x|match x
[INFO] [stderr]     |  _______________________________________^
[INFO] [stderr] 565 | |                             {
[INFO] [stderr] 566 | |                                 &RegexCharStackElem::Expression(ref e) => e.clone(),
[INFO] [stderr] 567 | |                                 _ => panic!("Close"),
[INFO] [stderr] 568 | |                             }).collect());
[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] 564 |                             }).map(|x|match *x
[INFO] [stderr] 565 |                             {
[INFO] [stderr] 566 |                                 RegexCharStackElem::Expression(ref e) => e.clone(),
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/lib.rs:577:33
[INFO] [stderr]     |
[INFO] [stderr] 577 |                               stack[i..].iter().map(|x|match x
[INFO] [stderr]     |  ______________________________________________________^
[INFO] [stderr] 578 | |                             {
[INFO] [stderr] 579 | |                                 &RegexCharStackElem::Expression(ref e) => e.clone(),
[INFO] [stderr] 580 | |                                 _ => panic!("Close"),
[INFO] [stderr] 581 | |                             }).collect());
[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] 577 |                             stack[i..].iter().map(|x|match *x
[INFO] [stderr] 578 |                             {
[INFO] [stderr] 579 |                                 RegexCharStackElem::Expression(ref e) => e.clone(),
[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/lib.rs:711:76
[INFO] [stderr]     |
[INFO] [stderr] 711 |     fn replace_vec_all<'a,J:Iterator<Item=Self::Item>+Clone>(&'a self, source:&'a Vec<Self::Item>, replacement:J) -> ReplacerVecIt<'a,Self::Item,Self,J>
[INFO] [stderr]     |                                                                               ^^^^^^^^^^^^^^^^^^^ help: change this to: `&[Self::Item]`
[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 `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/lib.rs:736:39
[INFO] [stderr]     |
[INFO] [stderr] 736 |     fn find_vec_all<'a>(&'a self, source:&'a Vec<Self::Item>) -> FinderVecIt<'a,Self::Item,Self>
[INFO] [stderr]     |                                          ^^^^^^^^^^^^^^^^^^^ help: change this to: `&[Self::Item]`
[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: the loop variable `j` is used to index `v`
[INFO] [stderr]    --> src/lib.rs:871:17
[INFO] [stderr]     |
[INFO] [stderr] 871 |                             for j in 0..nkept
[INFO] [stderr]     |                                      ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]     |
[INFO] [stderr] 871 |                             for (j, <item>) in v.iter().enumerate().take(nkept)
[INFO] [stderr]     |                                 ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `j` is used to index `v`
[INFO] [stderr]     --> src/lib.rs:1044:15
[INFO] [stderr]      |
[INFO] [stderr] 1044 |                     for j in 0..nkept
[INFO] [stderr]      |                              ^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]      |
[INFO] [stderr] 1044 |                     for (j, <item>) in v.iter().enumerate().take(nkept)
[INFO] [stderr]      |                         ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `j` is used to index `v`
[INFO] [stderr]     --> src/lib.rs:1188:17
[INFO] [stderr]      |
[INFO] [stderr] 1188 |                             for j in 0..nkept
[INFO] [stderr]      |                                      ^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]      |
[INFO] [stderr] 1188 |                             for (j, <item>) in v.iter().enumerate().take(nkept)
[INFO] [stderr]      |                                 ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `j` is used to index `v`
[INFO] [stderr]     --> src/lib.rs:1311:15
[INFO] [stderr]      |
[INFO] [stderr] 1311 |                     for j in 0..nkept
[INFO] [stderr]      |                              ^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]      |
[INFO] [stderr] 1311 |                     for (j, <item>) in v.iter().enumerate().take(nkept)
[INFO] [stderr]      |                         ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_some()`
[INFO] [stderr]     --> src/lib.rs:1383:10
[INFO] [stderr]      |
[INFO] [stderr] 1383 |           if let Some(_)=self.zero_firsts.get(&elem)
[INFO] [stderr]      |  _________-      ^^^^^^^
[INFO] [stderr] 1384 | |         {
[INFO] [stderr] 1385 | |             return true;
[INFO] [stderr] 1386 | |         }
[INFO] [stderr] ...    |
[INFO] [stderr] 1389 | |             return false;
[INFO] [stderr] 1390 | |         }
[INFO] [stderr]      | |_________- help: try this: `if self.zero_firsts.get(&elem).is_some()`
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(clippy::redundant_pattern_matching)] on by default
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[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/lib.rs:1396:36
[INFO] [stderr]      |
[INFO] [stderr] 1396 |     pub fn compile_hash_map(&self,all:&Vec<T>) -> StateMachineHashMap<T>
[INFO] [stderr]      |                                       ^^^^^^^ help: change this to: `&[T]`
[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: using `clone` on a `Copy` type
[INFO] [stderr]     --> src/lib.rs:1517:24
[INFO] [stderr]      |
[INFO] [stderr] 1517 |             machine.zero_firsts[elem.clone() as usize]=true;
[INFO] [stderr]      |                                 ^^^^^^^^^^^^ help: try dereferencing it: `*elem`
[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: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/lib.rs:28:3
[INFO] [stderr]    |
[INFO] [stderr] 28 |           match self
[INFO] [stderr]    |  _________^
[INFO] [stderr] 29 | |         {
[INFO] [stderr] 30 | |             &EmptySet => match other
[INFO] [stderr] 31 | |             {
[INFO] [stderr] ...  |
[INFO] [stderr] 84 | |             },
[INFO] [stderr] 85 | |         }
[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] 28 |         match *self
[INFO] [stderr] 29 |         {
[INFO] [stderr] 30 |             EmptySet => match other
[INFO] [stderr] 31 |             {
[INFO] [stderr] 32 |                 &EmptySet => Ordering::Equal,
[INFO] [stderr] 33 |                 _ => Ordering::Less,
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/lib.rs:30:17
[INFO] [stderr]    |
[INFO] [stderr] 30 |               &EmptySet => match other
[INFO] [stderr]    |  __________________________^
[INFO] [stderr] 31 | |             {
[INFO] [stderr] 32 | |                 &EmptySet => Ordering::Equal,
[INFO] [stderr] 33 | |                 _ => Ordering::Less,
[INFO] [stderr] 34 | |             }
[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] 30 |             &EmptySet => match *other
[INFO] [stderr] 31 |             {
[INFO] [stderr] 32 |                 EmptySet => Ordering::Equal,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/lib.rs:35:20
[INFO] [stderr]    |
[INFO] [stderr] 35 |               &EmptyString => match other
[INFO] [stderr]    |  _____________________________^
[INFO] [stderr] 36 | |             {
[INFO] [stderr] 37 | |                 &EmptySet => Ordering::Greater,
[INFO] [stderr] 38 | |                 &EmptyString => Ordering::Equal,
[INFO] [stderr] 39 | |                 _ => Ordering::Less,
[INFO] [stderr] 40 | |             },
[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] 35 |             &EmptyString => match *other
[INFO] [stderr] 36 |             {
[INFO] [stderr] 37 |                 EmptySet => Ordering::Greater,
[INFO] [stderr] 38 |                 EmptyString => Ordering::Equal,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/lib.rs:41:24
[INFO] [stderr]    |
[INFO] [stderr] 41 |               &Single(ref lit) => match other
[INFO] [stderr]    |  _________________________________^
[INFO] [stderr] 42 | |             {
[INFO] [stderr] 43 | |                 &EmptySet => Ordering::Greater,
[INFO] [stderr] 44 | |                 &EmptyString => Ordering::Greater,
[INFO] [stderr] 45 | |                 &Single(ref lit_other) => lit.cmp(lit_other),
[INFO] [stderr] 46 | |                 _ => Ordering::Less,
[INFO] [stderr] 47 | |             },
[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] 41 |             &Single(ref lit) => match *other
[INFO] [stderr] 42 |             {
[INFO] [stderr] 43 |                 EmptySet => Ordering::Greater,
[INFO] [stderr] 44 |                 EmptyString => Ordering::Greater,
[INFO] [stderr] 45 |                 Single(ref lit_other) => lit.cmp(lit_other),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/lib.rs:48:27
[INFO] [stderr]    |
[INFO] [stderr] 48 |               &Disjunction(ref v) => match other
[INFO] [stderr]    |  ____________________________________^
[INFO] [stderr] 49 | |             {
[INFO] [stderr] 50 | |                 &EmptySet => Ordering::Greater,
[INFO] [stderr] 51 | |                 &EmptyString => Ordering::Greater,
[INFO] [stderr] ...  |
[INFO] [stderr] 54 | |                 _ => Ordering::Less,
[INFO] [stderr] 55 | |             },
[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] 48 |             &Disjunction(ref v) => match *other
[INFO] [stderr] 49 |             {
[INFO] [stderr] 50 |                 EmptySet => Ordering::Greater,
[INFO] [stderr] 51 |                 EmptyString => Ordering::Greater,
[INFO] [stderr] 52 |                 Single(_) => Ordering::Greater, 
[INFO] [stderr] 53 |                 Disjunction(ref v_other) => v.cmp(v_other),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/lib.rs:56:29
[INFO] [stderr]    |
[INFO] [stderr] 56 |               &Concatenation(ref v) => match other
[INFO] [stderr]    |  ______________________________________^
[INFO] [stderr] 57 | |             {
[INFO] [stderr] 58 | |                 &EmptySet => Ordering::Greater,
[INFO] [stderr] 59 | |                 &EmptyString => Ordering::Greater,
[INFO] [stderr] ...  |
[INFO] [stderr] 63 | |                 _ => Ordering::Less,
[INFO] [stderr] 64 | |             },
[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] 56 |             &Concatenation(ref v) => match *other
[INFO] [stderr] 57 |             {
[INFO] [stderr] 58 |                 EmptySet => Ordering::Greater,
[INFO] [stderr] 59 |                 EmptyString => Ordering::Greater,
[INFO] [stderr] 60 |                 Single(_) => Ordering::Greater, 
[INFO] [stderr] 61 |                 Disjunction(_) => Ordering::Greater,
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/lib.rs:65:26
[INFO] [stderr]    |
[INFO] [stderr] 65 |               &KleeneStar(ref e) => match other
[INFO] [stderr]    |  ___________________________________^
[INFO] [stderr] 66 | |             {
[INFO] [stderr] 67 | |                 &EmptySet => Ordering::Greater,
[INFO] [stderr] 68 | |                 &EmptyString => Ordering::Greater,
[INFO] [stderr] ...  |
[INFO] [stderr] 73 | |                 _ => Ordering::Less,
[INFO] [stderr] 74 | |             },
[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] 65 |             &KleeneStar(ref e) => match *other
[INFO] [stderr] 66 |             {
[INFO] [stderr] 67 |                 EmptySet => Ordering::Greater,
[INFO] [stderr] 68 |                 EmptyString => Ordering::Greater,
[INFO] [stderr] 69 |                 Single(_) => Ordering::Greater, 
[INFO] [stderr] 70 |                 Disjunction(_) => Ordering::Greater,
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/lib.rs:75:26
[INFO] [stderr]    |
[INFO] [stderr] 75 |               &Complement(ref e) => match other
[INFO] [stderr]    |  ___________________________________^
[INFO] [stderr] 76 | |             {
[INFO] [stderr] 77 | |                 &EmptySet => Ordering::Greater,
[INFO] [stderr] 78 | |                 &EmptyString => Ordering::Greater,
[INFO] [stderr] ...  |
[INFO] [stderr] 83 | |                 &Complement(ref e_other) => e.cmp(e_other),
[INFO] [stderr] 84 | |             },
[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] 75 |             &Complement(ref e) => match *other
[INFO] [stderr] 76 |             {
[INFO] [stderr] 77 |                 EmptySet => Ordering::Greater,
[INFO] [stderr] 78 |                 EmptyString => Ordering::Greater,
[INFO] [stderr] 79 |                 Single(_) => Ordering::Greater, 
[INFO] [stderr] 80 |                 Disjunction(_) => Ordering::Greater,
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/lib.rs:115:3
[INFO] [stderr]     |
[INFO] [stderr] 115 |           match self
[INFO] [stderr]     |  _________^
[INFO] [stderr] 116 | |         {
[INFO] [stderr] 117 | |             &EmptySet => EmptySet,
[INFO] [stderr] 118 | |             &EmptyString => EmptyString,
[INFO] [stderr] ...   |
[INFO] [stderr] 178 | |             &Complement(ref v) => Complement(v.clone()),
[INFO] [stderr] 179 | |         }
[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] 115 |         match *self
[INFO] [stderr] 116 |         {
[INFO] [stderr] 117 |             EmptySet => EmptySet,
[INFO] [stderr] 118 |             EmptyString => EmptyString,
[INFO] [stderr] 119 |             Single(ref lit) => Single(lit.clone()),
[INFO] [stderr] 120 |             Disjunction(ref v) =>
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/lib.rs:184:3
[INFO] [stderr]     |
[INFO] [stderr] 184 |           match self
[INFO] [stderr]     |  _________^
[INFO] [stderr] 185 | |         {
[INFO] [stderr] 186 | |             &EmptySet => String::from("@emptyset"),
[INFO] [stderr] 187 | |             &EmptyString => String::from(""),
[INFO] [stderr] ...   |
[INFO] [stderr] 209 | |             &Complement(ref v) => String::from("[^")+&v.iter().map(t_to_string).collect::<String>()+&String::from("]"),
[INFO] [stderr] 210 | |         }
[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] 184 |         match *self
[INFO] [stderr] 185 |         {
[INFO] [stderr] 186 |             EmptySet => String::from("@emptyset"),
[INFO] [stderr] 187 |             EmptyString => String::from(""),
[INFO] [stderr] 188 |             Single(ref lit) => t_to_string(&lit),
[INFO] [stderr] 189 |             Disjunction(ref v) =>
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/lib.rs:214:3
[INFO] [stderr]     |
[INFO] [stderr] 214 |           match self
[INFO] [stderr]     |  _________^
[INFO] [stderr] 215 | |         {
[INFO] [stderr] 216 | |             &EmptySet => false,
[INFO] [stderr] 217 | |             &EmptyString => true,
[INFO] [stderr] ...   |
[INFO] [stderr] 242 | |             &Complement(_) => false,
[INFO] [stderr] 243 | |         }
[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] 214 |         match *self
[INFO] [stderr] 215 |         {
[INFO] [stderr] 216 |             EmptySet => false,
[INFO] [stderr] 217 |             EmptyString => true,
[INFO] [stderr] 218 |             Single(_) => false,
[INFO] [stderr] 219 |             Disjunction(ref v) =>
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/lib.rs:247:3
[INFO] [stderr]     |
[INFO] [stderr] 247 |           match self
[INFO] [stderr]     |  _________^
[INFO] [stderr] 248 | |         {
[INFO] [stderr] 249 | |             &EmptySet => EmptySet,
[INFO] [stderr] 250 | |             &EmptyString => EmptySet,
[INFO] [stderr] ...   |
[INFO] [stderr] 292 | |             },
[INFO] [stderr] 293 | |         }
[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] 247 |         match *self
[INFO] [stderr] 248 |         {
[INFO] [stderr] 249 |             EmptySet => EmptySet,
[INFO] [stderr] 250 |             EmptyString => EmptySet,
[INFO] [stderr] 251 |             Single(ref lit) => if *lit==*argument { EmptyString } else { EmptySet },
[INFO] [stderr] 252 |             Disjunction(ref v) => Disjunction(v.iter().map(|x|Rc::new(x.simple_derivative(argument))).collect()),
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/lib.rs:268:11
[INFO] [stderr]     |
[INFO] [stderr] 268 |                 while w.len()>0
[INFO] [stderr]     |                       ^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!w.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: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/lib.rs:301:3
[INFO] [stderr]     |
[INFO] [stderr] 301 |           match self
[INFO] [stderr]     |  _________^
[INFO] [stderr] 302 | |         {
[INFO] [stderr] 303 | |             &EmptySet => EmptySet,
[INFO] [stderr] 304 | |             &EmptyString => EmptyString,
[INFO] [stderr] ...   |
[INFO] [stderr] 309 | |             &Complement(ref v) => Complement(v.iter().map(f).collect()),
[INFO] [stderr] 310 | |         }
[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] 301 |         match *self
[INFO] [stderr] 302 |         {
[INFO] [stderr] 303 |             EmptySet => EmptySet,
[INFO] [stderr] 304 |             EmptyString => EmptyString,
[INFO] [stderr] 305 |             Single(ref lit) => Single(f(lit)),
[INFO] [stderr] 306 |             Disjunction(ref v) => Disjunction(v.iter().map(|x|Rc::new(x.map(f))).collect()),
[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/lib.rs:312:23
[INFO] [stderr]     |
[INFO] [stderr] 312 |     fn firsts(&self, all:&Vec<T>) -> BTreeSet<T>
[INFO] [stderr]     |                          ^^^^^^^ help: change this to: `&[T]`
[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: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/lib.rs:315:3
[INFO] [stderr]     |
[INFO] [stderr] 315 |           match self
[INFO] [stderr]     |  _________^
[INFO] [stderr] 316 | |         {
[INFO] [stderr] 317 | |             &EmptySet => (),
[INFO] [stderr] 318 | |             &EmptyString => (),
[INFO] [stderr] ...   |
[INFO] [stderr] 357 | |             },
[INFO] [stderr] 358 | |         };
[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] 315 |         match *self
[INFO] [stderr] 316 |         {
[INFO] [stderr] 317 |             EmptySet => (),
[INFO] [stderr] 318 |             EmptyString => (),
[INFO] [stderr] 319 |             Single(ref lit) =>
[INFO] [stderr] 320 |             {
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/lib.rs:456:32
[INFO] [stderr]     |
[INFO] [stderr] 456 |                               stack.iter().filter(|&x|match x
[INFO] [stderr]     |  _____________________________________________________^
[INFO] [stderr] 457 | |                             {
[INFO] [stderr] 458 | |                                 &RegexCharStackElem::Expression(_) => true,
[INFO] [stderr] 459 | |                                 _ => false,
[INFO] [stderr] 460 | |                             }).map(|x|match x
[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] 456 |                             stack.iter().filter(|&x|match *x
[INFO] [stderr] 457 |                             {
[INFO] [stderr] 458 |                                 RegexCharStackElem::Expression(_) => true,
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/lib.rs:460:18
[INFO] [stderr]     |
[INFO] [stderr] 460 |                               }).map(|x|match x
[INFO] [stderr]     |  _______________________________________^
[INFO] [stderr] 461 | |                             {
[INFO] [stderr] 462 | |                                 &RegexCharStackElem::Expression(ref e) => e.clone(),
[INFO] [stderr] 463 | |                                 _ => panic!("Ending"),
[INFO] [stderr] 464 | |                             }).collect());
[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] 460 |                             }).map(|x|match *x
[INFO] [stderr] 461 |                             {
[INFO] [stderr] 462 |                                 RegexCharStackElem::Expression(ref e) => e.clone(),
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/lib.rs:469:32
[INFO] [stderr]     |
[INFO] [stderr] 469 |                           stack[i..].iter().map(|x|match x
[INFO] [stderr]     |  __________________________________________________^
[INFO] [stderr] 470 | |                         {
[INFO] [stderr] 471 | |                             &RegexCharStackElem::Expression(ref e) => e.clone(),
[INFO] [stderr] 472 | |                             _ => panic!("Ending"),
[INFO] [stderr] 473 | |                         }).collect());
[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] 469 |                         stack[i..].iter().map(|x|match *x
[INFO] [stderr] 470 |                         {
[INFO] [stderr] 471 |                             RegexCharStackElem::Expression(ref e) => e.clone(),
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/lib.rs:497:32
[INFO] [stderr]     |
[INFO] [stderr] 497 |                           stack[i..].iter().map(|x|match x
[INFO] [stderr]     |  __________________________________________________^
[INFO] [stderr] 498 | |                         {
[INFO] [stderr] 499 | |                             &RegexCharStackElem::Expression(ref e) => e.clone(),
[INFO] [stderr] 500 | |                             _ => panic!("Bar"),
[INFO] [stderr] 501 | |                         }).collect());
[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] 497 |                         stack[i..].iter().map(|x|match *x
[INFO] [stderr] 498 |                         {
[INFO] [stderr] 499 |                             RegexCharStackElem::Expression(ref e) => e.clone(),
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/lib.rs:560:37
[INFO] [stderr]     |
[INFO] [stderr] 560 |                               stack[i..].iter().filter(|&x|match x
[INFO] [stderr]     |  __________________________________________________________^
[INFO] [stderr] 561 | |                             {
[INFO] [stderr] 562 | |                                 &RegexCharStackElem::Expression(_) => true,
[INFO] [stderr] 563 | |                                 _ => false,
[INFO] [stderr] 564 | |                             }).map(|x|match x
[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] 560 |                             stack[i..].iter().filter(|&x|match *x
[INFO] [stderr] 561 |                             {
[INFO] [stderr] 562 |                                 RegexCharStackElem::Expression(_) => true,
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/lib.rs:564:18
[INFO] [stderr]     |
[INFO] [stderr] 564 |                               }).map(|x|match x
[INFO] [stderr]     |  _______________________________________^
[INFO] [stderr] 565 | |                             {
[INFO] [stderr] 566 | |                                 &RegexCharStackElem::Expression(ref e) => e.clone(),
[INFO] [stderr] 567 | |                                 _ => panic!("Close"),
[INFO] [stderr] 568 | |                             }).collect());
[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] 564 |                             }).map(|x|match *x
[INFO] [stderr] 565 |                             {
[INFO] [stderr] 566 |                                 RegexCharStackElem::Expression(ref e) => e.clone(),
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/lib.rs:577:33
[INFO] [stderr]     |
[INFO] [stderr] 577 |                               stack[i..].iter().map(|x|match x
[INFO] [stderr]     |  ______________________________________________________^
[INFO] [stderr] 578 | |                             {
[INFO] [stderr] 579 | |                                 &RegexCharStackElem::Expression(ref e) => e.clone(),
[INFO] [stderr] 580 | |                                 _ => panic!("Close"),
[INFO] [stderr] 581 | |                             }).collect());
[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] 577 |                             stack[i..].iter().map(|x|match *x
[INFO] [stderr] 578 |                             {
[INFO] [stderr] 579 |                                 RegexCharStackElem::Expression(ref e) => e.clone(),
[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/lib.rs:711:76
[INFO] [stderr]     |
[INFO] [stderr] 711 |     fn replace_vec_all<'a,J:Iterator<Item=Self::Item>+Clone>(&'a self, source:&'a Vec<Self::Item>, replacement:J) -> ReplacerVecIt<'a,Self::Item,Self,J>
[INFO] [stderr]     |                                                                               ^^^^^^^^^^^^^^^^^^^ help: change this to: `&[Self::Item]`
[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 `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/lib.rs:736:39
[INFO] [stderr]     |
[INFO] [stderr] 736 |     fn find_vec_all<'a>(&'a self, source:&'a Vec<Self::Item>) -> FinderVecIt<'a,Self::Item,Self>
[INFO] [stderr]     |                                          ^^^^^^^^^^^^^^^^^^^ help: change this to: `&[Self::Item]`
[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: the loop variable `j` is used to index `v`
[INFO] [stderr]    --> src/lib.rs:871:17
[INFO] [stderr]     |
[INFO] [stderr] 871 |                             for j in 0..nkept
[INFO] [stderr]     |                                      ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]     |
[INFO] [stderr] 871 |                             for (j, <item>) in v.iter().enumerate().take(nkept)
[INFO] [stderr]     |                                 ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `j` is used to index `v`
[INFO] [stderr]     --> src/lib.rs:1044:15
[INFO] [stderr]      |
[INFO] [stderr] 1044 |                     for j in 0..nkept
[INFO] [stderr]      |                              ^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]      |
[INFO] [stderr] 1044 |                     for (j, <item>) in v.iter().enumerate().take(nkept)
[INFO] [stderr]      |                         ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `j` is used to index `v`
[INFO] [stderr]     --> src/lib.rs:1188:17
[INFO] [stderr]      |
[INFO] [stderr] 1188 |                             for j in 0..nkept
[INFO] [stderr]      |                                      ^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]      |
[INFO] [stderr] 1188 |                             for (j, <item>) in v.iter().enumerate().take(nkept)
[INFO] [stderr]      |                                 ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `j` is used to index `v`
[INFO] [stderr]     --> src/lib.rs:1311:15
[INFO] [stderr]      |
[INFO] [stderr] 1311 |                     for j in 0..nkept
[INFO] [stderr]      |                              ^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]      |
[INFO] [stderr] 1311 |                     for (j, <item>) in v.iter().enumerate().take(nkept)
[INFO] [stderr]      |                         ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_some()`
[INFO] [stderr]     --> src/lib.rs:1383:10
[INFO] [stderr]      |
[INFO] [stderr] 1383 |           if let Some(_)=self.zero_firsts.get(&elem)
[INFO] [stderr]      |  _________-      ^^^^^^^
[INFO] [stderr] 1384 | |         {
[INFO] [stderr] 1385 | |             return true;
[INFO] [stderr] 1386 | |         }
[INFO] [stderr] ...    |
[INFO] [stderr] 1389 | |             return false;
[INFO] [stderr] 1390 | |         }
[INFO] [stderr]      | |_________- help: try this: `if self.zero_firsts.get(&elem).is_some()`
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(clippy::redundant_pattern_matching)] on by default
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[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/lib.rs:1396:36
[INFO] [stderr]      |
[INFO] [stderr] 1396 |     pub fn compile_hash_map(&self,all:&Vec<T>) -> StateMachineHashMap<T>
[INFO] [stderr]      |                                       ^^^^^^^ help: change this to: `&[T]`
[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: using `clone` on a `Copy` type
[INFO] [stderr]     --> src/lib.rs:1517:24
[INFO] [stderr]      |
[INFO] [stderr] 1517 |             machine.zero_firsts[elem.clone() as usize]=true;
[INFO] [stderr]      |                                 ^^^^^^^^^^^^ help: try dereferencing it: `*elem`
[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]     Finished dev [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `"docker" "inspect" "4c06d56b4421990a5184fa52f363b7d571c01416c485b30642b802b314d9edef"`
[INFO] running `"docker" "rm" "-f" "4c06d56b4421990a5184fa52f363b7d571c01416c485b30642b802b314d9edef"`
[INFO] [stdout] 4c06d56b4421990a5184fa52f363b7d571c01416c485b30642b802b314d9edef