[INFO] crate prattle 0.1.3 is already in cache
[INFO] extracting crate prattle 0.1.3 into work/ex/clippy-test-run/sources/stable/reg/prattle/0.1.3
[INFO] extracting crate prattle 0.1.3 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/prattle/0.1.3
[INFO] validating manifest of prattle-0.1.3 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 prattle-0.1.3 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 prattle-0.1.3
[INFO] finished frobbing prattle-0.1.3
[INFO] frobbed toml for prattle-0.1.3 written to work/ex/clippy-test-run/sources/stable/reg/prattle/0.1.3/Cargo.toml
[INFO] started frobbing prattle-0.1.3
[INFO] finished frobbing prattle-0.1.3
[INFO] frobbed toml for prattle-0.1.3 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/prattle/0.1.3/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 prattle-0.1.3 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-3/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/prattle/0.1.3:/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] 317e755007cb7419aebdcfd3f7e768c7d0049b4c8212a8f35555d20b1883da72
[INFO] running `"docker" "start" "-a" "317e755007cb7419aebdcfd3f7e768c7d0049b4c8212a8f35555d20b1883da72"`
[INFO] [stderr]     Checking prattle v0.1.3 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/parser.rs:86:13
[INFO] [stderr]    |
[INFO] [stderr] 86 |             null_map: null_map,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `null_map`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/parser.rs:87:13
[INFO] [stderr]    |
[INFO] [stderr] 87 |             left_map: left_map,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `left_map`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/parser.rs:88:13
[INFO] [stderr]    |
[INFO] [stderr] 88 |             lexer: lexer
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `lexer`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/parser.rs:86:13
[INFO] [stderr]    |
[INFO] [stderr] 86 |             null_map: null_map,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `null_map`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/parser.rs:87:13
[INFO] [stderr]    |
[INFO] [stderr] 87 |             left_map: left_map,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `left_map`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/parser.rs:88:13
[INFO] [stderr]    |
[INFO] [stderr] 88 |             lexer: lexer
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `lexer`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/spec.rs:135:9
[INFO] [stderr]     |
[INFO] [stderr] 135 |         return (self.null_map, self.left_map)
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(self.null_map, self.left_map)`
[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/spec.rs:135:9
[INFO] [stderr]     |
[INFO] [stderr] 135 |         return (self.null_map, self.left_map)
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(self.null_map, self.left_map)`
[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] error: calling `mem::discriminant` on non-enum type `T`
[INFO] [stderr]    --> src/parser.rs:118:46
[INFO] [stderr]     |
[INFO] [stderr] 118 |                 let val = self.null_map.get(&discriminant(&tk));
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(clippy::mem_discriminant_non_enum)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#mem_discriminant_non_enum
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/parser.rs:120:34
[INFO] [stderr]     |
[INFO] [stderr] 120 |                     Some(val) => val.clone(), 
[INFO] [stderr]     |                                  ^^^^^^^^^^^ help: try dereferencing it: `*val`
[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] error: calling `mem::discriminant` on non-enum type `T`
[INFO] [stderr]    --> src/parser.rs:128:48
[INFO] [stderr]     |
[INFO] [stderr] 128 |                     let v = self.left_map.get(&discriminant(&tk));
[INFO] [stderr]     |                                                ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#mem_discriminant_non_enum
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/parser.rs:130:38
[INFO] [stderr]     |
[INFO] [stderr] 130 |                         Some(val) => val.clone(), 
[INFO] [stderr]     |                                      ^^^^^^^^^^^ help: try dereferencing it: `*val`
[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: calling `mem::discriminant` on non-enum type `T`
[INFO] [stderr]    --> src/parser.rs:145:64
[INFO] [stderr]     |
[INFO] [stderr] 145 |             if let Some((_, next_rbp, _)) = self.left_map.get(&discriminant(&tk)) {
[INFO] [stderr]     |                                                                ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#mem_discriminant_non_enum
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `spec::ParserSpec<T>`
[INFO] [stderr]   --> src/spec.rs:70:5
[INFO] [stderr]    |
[INFO] [stderr] 70 | /     pub fn new() -> ParserSpec<T> {
[INFO] [stderr] 71 | |         ParserSpec {
[INFO] [stderr] 72 | |             null_map: HashMap::new(), 
[INFO] [stderr] 73 | |             left_map: HashMap::new(),
[INFO] [stderr] 74 | |         }
[INFO] [stderr] 75 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_without_default_derive)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 63 | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error: calling `mem::discriminant` on non-enum type `T`
[INFO] [stderr]   --> src/spec.rs:79:20
[INFO] [stderr]    |
[INFO] [stderr] 79 |         let disc = discriminant(&token);
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#mem_discriminant_non_enum
[INFO] [stderr] 
[INFO] [stderr] warning: usage of `contains_key` followed by `insert` on a `HashMap`
[INFO] [stderr]   --> src/spec.rs:80:9
[INFO] [stderr]    |
[INFO] [stderr] 80 | /         if !self.null_map.contains_key(&disc) {
[INFO] [stderr] 81 | |             self.null_map.insert(disc, (bp, func));
[INFO] [stderr] 82 | |             Ok(())
[INFO] [stderr] 83 | |         } else {
[INFO] [stderr] 84 | |             Err(SpecificationError::TokenToRuleAlreadyDefined{tk: token})
[INFO] [stderr] 85 | |         }
[INFO] [stderr]    | |_________^ help: consider using: `self.null_map.entry(disc)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::map_entry)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_entry
[INFO] [stderr] 
[INFO] [stderr] error: calling `mem::discriminant` on non-enum type `T`
[INFO] [stderr]   --> src/spec.rs:90:20
[INFO] [stderr]    |
[INFO] [stderr] 90 |         let disc = discriminant(&token);
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#mem_discriminant_non_enum
[INFO] [stderr] 
[INFO] [stderr] warning: usage of `contains_key` followed by `insert` on a `HashMap`
[INFO] [stderr]   --> src/spec.rs:91:9
[INFO] [stderr]    |
[INFO] [stderr] 91 | /         if !self.left_map.contains_key(&disc) {
[INFO] [stderr] 92 | |             self.left_map.insert(disc, (bp, bp, func));
[INFO] [stderr] 93 | |             Ok(())
[INFO] [stderr] 94 | |         } else {
[INFO] [stderr] 95 | |             Err(SpecificationError::TokenToRuleAlreadyDefined{tk: token})
[INFO] [stderr] 96 | |         }
[INFO] [stderr]    | |_________^ help: consider using: `self.left_map.entry(disc)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_entry
[INFO] [stderr] 
[INFO] [stderr] error: calling `mem::discriminant` on non-enum type `T`
[INFO] [stderr]    --> src/spec.rs:101:20
[INFO] [stderr]     |
[INFO] [stderr] 101 |         let disc = discriminant(&token);
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#mem_discriminant_non_enum
[INFO] [stderr] 
[INFO] [stderr] warning: usage of `contains_key` followed by `insert` on a `HashMap`
[INFO] [stderr]    --> src/spec.rs:102:9
[INFO] [stderr]     |
[INFO] [stderr] 102 | /         if !self.left_map.contains_key(&disc) {
[INFO] [stderr] 103 | |             self.left_map.insert(disc, (lbp, rbp, func));
[INFO] [stderr] 104 | |             Ok(())
[INFO] [stderr] 105 | |         } else {
[INFO] [stderr] 106 | |             Err(SpecificationError::TokenToRuleAlreadyDefined{tk: token})
[INFO] [stderr] 107 | |         }
[INFO] [stderr]     | |_________^ help: consider using: `self.left_map.entry(disc)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_entry
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]    --> src/spec.rs:134:26
[INFO] [stderr]     |
[INFO] [stderr] 134 |     pub fn maps(self) -> (HashMap<Discriminant<T>, NullInfo<T>>, HashMap<Discriminant<T>, LeftInfo<T>>) {
[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] error: aborting due to 6 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: calling `mem::discriminant` on non-enum type `T`
[INFO] [stderr]    --> src/parser.rs:118:46
[INFO] [stderr]     |
[INFO] [stderr] 118 |                 let val = self.null_map.get(&discriminant(&tk));
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(clippy::mem_discriminant_non_enum)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#mem_discriminant_non_enum
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/parser.rs:120:34
[INFO] [stderr]     |
[INFO] [stderr] 120 |                     Some(val) => val.clone(), 
[INFO] [stderr]     |                                  ^^^^^^^^^^^ help: try dereferencing it: `*val`
[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] error: calling `mem::discriminant` on non-enum type `T`
[INFO] [stderr]    --> src/parser.rs:128:48
[INFO] [stderr]     |
[INFO] [stderr] 128 |                     let v = self.left_map.get(&discriminant(&tk));
[INFO] [stderr]     |                                                ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#mem_discriminant_non_enum
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/parser.rs:130:38
[INFO] [stderr]     |
[INFO] [stderr] 130 |                         Some(val) => val.clone(), 
[INFO] [stderr]     |                                      ^^^^^^^^^^^ help: try dereferencing it: `*val`
[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: Could not compile `prattle`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: calling `mem::discriminant` on non-enum type `T`
[INFO] [stderr]    --> src/parser.rs:145:64
[INFO] [stderr]     |
[INFO] [stderr] 145 |             if let Some((_, next_rbp, _)) = self.left_map.get(&discriminant(&tk)) {
[INFO] [stderr]     |                                                                ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#mem_discriminant_non_enum
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `spec::ParserSpec<T>`
[INFO] [stderr]   --> src/spec.rs:70:5
[INFO] [stderr]    |
[INFO] [stderr] 70 | /     pub fn new() -> ParserSpec<T> {
[INFO] [stderr] 71 | |         ParserSpec {
[INFO] [stderr] 72 | |             null_map: HashMap::new(), 
[INFO] [stderr] 73 | |             left_map: HashMap::new(),
[INFO] [stderr] 74 | |         }
[INFO] [stderr] 75 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_without_default_derive)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 63 | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error: calling `mem::discriminant` on non-enum type `T`
[INFO] [stderr]   --> src/spec.rs:79:20
[INFO] [stderr]    |
[INFO] [stderr] 79 |         let disc = discriminant(&token);
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#mem_discriminant_non_enum
[INFO] [stderr] 
[INFO] [stderr] warning: usage of `contains_key` followed by `insert` on a `HashMap`
[INFO] [stderr]   --> src/spec.rs:80:9
[INFO] [stderr]    |
[INFO] [stderr] 80 | /         if !self.null_map.contains_key(&disc) {
[INFO] [stderr] 81 | |             self.null_map.insert(disc, (bp, func));
[INFO] [stderr] 82 | |             Ok(())
[INFO] [stderr] 83 | |         } else {
[INFO] [stderr] 84 | |             Err(SpecificationError::TokenToRuleAlreadyDefined{tk: token})
[INFO] [stderr] 85 | |         }
[INFO] [stderr]    | |_________^ help: consider using: `self.null_map.entry(disc)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::map_entry)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_entry
[INFO] [stderr] 
[INFO] [stderr] error: calling `mem::discriminant` on non-enum type `T`
[INFO] [stderr]   --> src/spec.rs:90:20
[INFO] [stderr]    |
[INFO] [stderr] 90 |         let disc = discriminant(&token);
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#mem_discriminant_non_enum
[INFO] [stderr] 
[INFO] [stderr] warning: usage of `contains_key` followed by `insert` on a `HashMap`
[INFO] [stderr]   --> src/spec.rs:91:9
[INFO] [stderr]    |
[INFO] [stderr] 91 | /         if !self.left_map.contains_key(&disc) {
[INFO] [stderr] 92 | |             self.left_map.insert(disc, (bp, bp, func));
[INFO] [stderr] 93 | |             Ok(())
[INFO] [stderr] 94 | |         } else {
[INFO] [stderr] 95 | |             Err(SpecificationError::TokenToRuleAlreadyDefined{tk: token})
[INFO] [stderr] 96 | |         }
[INFO] [stderr]    | |_________^ help: consider using: `self.left_map.entry(disc)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_entry
[INFO] [stderr] 
[INFO] [stderr] error: calling `mem::discriminant` on non-enum type `T`
[INFO] [stderr]    --> src/spec.rs:101:20
[INFO] [stderr]     |
[INFO] [stderr] 101 |         let disc = discriminant(&token);
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#mem_discriminant_non_enum
[INFO] [stderr] 
[INFO] [stderr] warning: usage of `contains_key` followed by `insert` on a `HashMap`
[INFO] [stderr]    --> src/spec.rs:102:9
[INFO] [stderr]     |
[INFO] [stderr] 102 | /         if !self.left_map.contains_key(&disc) {
[INFO] [stderr] 103 | |             self.left_map.insert(disc, (lbp, rbp, func));
[INFO] [stderr] 104 | |             Ok(())
[INFO] [stderr] 105 | |         } else {
[INFO] [stderr] 106 | |             Err(SpecificationError::TokenToRuleAlreadyDefined{tk: token})
[INFO] [stderr] 107 | |         }
[INFO] [stderr]     | |_________^ help: consider using: `self.left_map.entry(disc)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_entry
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]    --> src/spec.rs:134:26
[INFO] [stderr]     |
[INFO] [stderr] 134 |     pub fn maps(self) -> (HashMap<Discriminant<T>, NullInfo<T>>, HashMap<Discriminant<T>, LeftInfo<T>>) {
[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] error: aborting due to 6 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `prattle`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "317e755007cb7419aebdcfd3f7e768c7d0049b4c8212a8f35555d20b1883da72"`
[INFO] running `"docker" "rm" "-f" "317e755007cb7419aebdcfd3f7e768c7d0049b4c8212a8f35555d20b1883da72"`
[INFO] [stdout] 317e755007cb7419aebdcfd3f7e768c7d0049b4c8212a8f35555d20b1883da72