[INFO] fetching crate whiley_file 0.1.0...
[INFO] linting whiley_file-0.1.0 against nightly for clippy-nonminimal_bool-denied
[INFO] extracting crate whiley_file 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate whiley_file 0.1.0
[INFO] finished tweaking crates.io crate whiley_file 0.1.0
[INFO] tweaked toml for crates.io crate whiley_file 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate whiley_file 0.1.0 on toolchain nightly
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded syntactic_heap v0.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 82b50ef1e3f9560b1d2fe43b20d30ddff9f28109cbbc32a1df10097e3ee42a46
[INFO] running `Command { std: "docker" "start" "-a" "82b50ef1e3f9560b1d2fe43b20d30ddff9f28109cbbc32a1df10097e3ee42a46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "82b50ef1e3f9560b1d2fe43b20d30ddff9f28109cbbc32a1df10097e3ee42a46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82b50ef1e3f9560b1d2fe43b20d30ddff9f28109cbbc32a1df10097e3ee42a46", kill_on_drop: false }`
[INFO] [stdout] 82b50ef1e3f9560b1d2fe43b20d30ddff9f28109cbbc32a1df10097e3ee42a46
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "clippy" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cc70805ab0e348db340b611d047d28c301b11d137ba6a19bfc172cc1c6bc7f6e
[INFO] running `Command { std: "docker" "start" "-a" "cc70805ab0e348db340b611d047d28c301b11d137ba6a19bfc172cc1c6bc7f6e", kill_on_drop: false }`
[INFO] [stderr]     Checking syntactic_heap v0.3.1
[INFO] [stderr]     Checking whiley_file v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `ast`
[INFO] [stdout]    --> src/ast.rs:218:15
[INFO] [stdout]     |
[INFO] [stdout] 218 |     pub fn is(ast: &AbstractSyntaxTree, t: &Node) -> bool {
[INFO] [stdout]     |               ^^^ help: if this is intentional, prefix it with an underscore: `_ast`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `slice`
[INFO] [stdout]    --> src/parser.rs:143:6
[INFO] [stdout]     |
[INFO] [stdout] 143 |     let slice = &self.lexer.input[start.start .. end];
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_slice`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `to_string` is never used
[INFO] [stdout]    --> src/ast.rs:328:4
[INFO] [stdout]     |
[INFO] [stdout] 328 | fn to_string<T:fmt::Display>(items : &[T]) -> String {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `env` and `mapper` are never read
[INFO] [stdout]   --> src/parser.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub struct Parser<'a, F>
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 46 |     env: Env,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 47 |     /// Provides mechanism for source maps
[INFO] [stdout] 48 |     mapper : F
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `matches` is never used
[INFO] [stdout]    --> src/parser.rs:546:8
[INFO] [stdout]     |
[INFO] [stdout]  52 | / impl<'a,'b,F> Parser<'a,F>
[INFO] [stdout]  53 | | where 'a :'b, F : FnMut(usize,&'a str) {
[INFO] [stdout]     | |______________________________________- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 546 |       fn matches(&mut self, kind : TokenType) -> Result<Token<'a>> {
[INFO] [stdout]     |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match expression looks like `matches!` macro
[INFO] [stdout]   --> src/ast.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 | /         match t {
[INFO] [stdout] 73 | |         Node::FunctionDecl(_) => true,
[INFO] [stdout] 74 | |         Node::MethodDecl(_) => true,
[INFO] [stdout] 75 | |             Node::TypeDecl(_) => true,
[INFO] [stdout] 76 | |             _ => false
[INFO] [stdout] 77 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_like_matches_macro
[INFO] [stdout]    = note: `#[warn(clippy::match_like_matches_macro)]` on by default
[INFO] [stdout] help: use `matches!` directly
[INFO] [stdout]    |
[INFO] [stdout] 72 -         match t {
[INFO] [stdout] 73 -         Node::FunctionDecl(_) => true,
[INFO] [stdout] 74 -         Node::MethodDecl(_) => true,
[INFO] [stdout] 75 -             Node::TypeDecl(_) => true,
[INFO] [stdout] 76 -             _ => false
[INFO] [stdout] 77 -         }
[INFO] [stdout] 72 +         matches!(t, Node::FunctionDecl(_) | Node::MethodDecl(_) | Node::TypeDecl(_))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an implementation of `From` is preferred since it gives you `Into<_>` for free where the reverse isn't true
[INFO] [stdout]   --> src/ast.rs:81:1
[INFO] [stdout]    |
[INFO] [stdout] 81 | impl Into<usize> for Decl {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: `impl From<Local> for Foreign` is allowed by the orphan rules, for more information see
[INFO] [stdout]            https://doc.rust-lang.org/reference/items/implementations.html#trait-implementation-coherence
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#from_over_into
[INFO] [stdout]    = note: `#[warn(clippy::from_over_into)]` on by default
[INFO] [stdout] help: replace the `Into` implementation with `From<ast::Decl>`
[INFO] [stdout]    |
[INFO] [stdout] 81 ~ impl From<Decl> for usize {
[INFO] [stdout] 82 ~     fn from(val: Decl) -> Self { val.index }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match expression looks like `matches!` macro
[INFO] [stdout]    --> src/ast.rs:116:9
[INFO] [stdout]     |
[INFO] [stdout] 116 | /         match t {
[INFO] [stdout] 117 | |         Node::AssertStmt(_) => true,
[INFO] [stdout] 118 | |         Node::BlockStmt(_) => true,
[INFO] [stdout] 119 | |         Node::SkipStmt(_) => true,
[INFO] [stdout] 120 | |             _ => false
[INFO] [stdout] 121 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_like_matches_macro
[INFO] [stdout] help: use `matches!` directly
[INFO] [stdout]     |
[INFO] [stdout] 116 -         match t {
[INFO] [stdout] 117 -         Node::AssertStmt(_) => true,
[INFO] [stdout] 118 -         Node::BlockStmt(_) => true,
[INFO] [stdout] 119 -         Node::SkipStmt(_) => true,
[INFO] [stdout] 120 -             _ => false
[INFO] [stdout] 121 -         }
[INFO] [stdout] 116 +         matches!(t, Node::AssertStmt(_) | Node::BlockStmt(_) | Node::SkipStmt(_))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an implementation of `From` is preferred since it gives you `Into<_>` for free where the reverse isn't true
[INFO] [stdout]    --> src/ast.rs:125:1
[INFO] [stdout]     |
[INFO] [stdout] 125 | impl Into<usize> for Stmt {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: `impl From<Local> for Foreign` is allowed by the orphan rules, for more information see
[INFO] [stdout]             https://doc.rust-lang.org/reference/items/implementations.html#trait-implementation-coherence
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#from_over_into
[INFO] [stdout] help: replace the `Into` implementation with `From<ast::Stmt>`
[INFO] [stdout]     |
[INFO] [stdout] 125 ~ impl From<Stmt> for usize {
[INFO] [stdout] 126 ~     fn from(val: Stmt) -> Self { val.0 }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match expression looks like `matches!` macro
[INFO] [stdout]    --> src/ast.rs:160:9
[INFO] [stdout]     |
[INFO] [stdout] 160 | /         match t {
[INFO] [stdout] 161 | |         Node::BoolExpr(_) => true,
[INFO] [stdout] 162 | |         Node::EqualsExpr(_) => true,
[INFO] [stdout] 163 | |         Node::LessThanExpr(_) => true,
[INFO] [stdout] ...   |
[INFO] [stdout] 167 | |             _ => false
[INFO] [stdout] 168 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_like_matches_macro
[INFO] [stdout] help: use `matches!` directly
[INFO] [stdout]     |
[INFO] [stdout] 160 -         match t {
[INFO] [stdout] 161 -         Node::BoolExpr(_) => true,
[INFO] [stdout] 162 -         Node::EqualsExpr(_) => true,
[INFO] [stdout] 163 -         Node::LessThanExpr(_) => true,
[INFO] [stdout] 164 -         Node::NotEqualsExpr(_) => true,
[INFO] [stdout] 165 -         Node::IntExpr(_) => true,
[INFO] [stdout] 166 -         Node::VarExpr(_) => true,
[INFO] [stdout] 167 -             _ => false
[INFO] [stdout] 168 -         }
[INFO] [stdout] 160 +         matches!(t, Node::BoolExpr(_) | Node::EqualsExpr(_) | Node::LessThanExpr(_) | Node::NotEqualsExpr(_) | Node::IntExpr(_) | Node::VarExpr(_))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an implementation of `From` is preferred since it gives you `Into<_>` for free where the reverse isn't true
[INFO] [stdout]    --> src/ast.rs:172:1
[INFO] [stdout]     |
[INFO] [stdout] 172 | impl Into<usize> for Expr {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: `impl From<Local> for Foreign` is allowed by the orphan rules, for more information see
[INFO] [stdout]             https://doc.rust-lang.org/reference/items/implementations.html#trait-implementation-coherence
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#from_over_into
[INFO] [stdout] help: replace the `Into` implementation with `From<ast::Expr>`
[INFO] [stdout]     |
[INFO] [stdout] 172 ~ impl From<Expr> for usize {
[INFO] [stdout] 173 ~     fn from(val: Expr) -> Self { val.0 }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match expression looks like `matches!` macro
[INFO] [stdout]    --> src/ast.rs:219:9
[INFO] [stdout]     |
[INFO] [stdout] 219 | /         match t {
[INFO] [stdout] 220 | |             Node::BoolType(_) => true,
[INFO] [stdout] 221 | |             Node::IntType(_) => true,
[INFO] [stdout] 222 | |             Node::NullType(_) => true,
[INFO] [stdout] ...   |
[INFO] [stdout] 227 | |             _ => false
[INFO] [stdout] 228 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_like_matches_macro
[INFO] [stdout] help: use `matches!` directly
[INFO] [stdout]     |
[INFO] [stdout] 219 -         match t {
[INFO] [stdout] 220 -             Node::BoolType(_) => true,
[INFO] [stdout] 221 -             Node::IntType(_) => true,
[INFO] [stdout] 222 -             Node::NullType(_) => true,
[INFO] [stdout] 223 -             Node::VoidType(_) => true,
[INFO] [stdout] 224 -             Node::ArrayType(_) => true,
[INFO] [stdout] 225 -             Node::ReferenceType(_) => true,
[INFO] [stdout] 226 -             Node::RecordType(_) => true,
[INFO] [stdout] 227 -             _ => false
[INFO] [stdout] 228 -         }
[INFO] [stdout] 219 +         matches!(t, Node::BoolType(_) | Node::IntType(_) | Node::NullType(_) | Node::VoidType(_) | Node::ArrayType(_) | Node::ReferenceType(_) | Node::RecordType(_))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an implementation of `From` is preferred since it gives you `Into<_>` for free where the reverse isn't true
[INFO] [stdout]    --> src/ast.rs:232:1
[INFO] [stdout]     |
[INFO] [stdout] 232 | impl Into<usize> for Type {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: `impl From<Local> for Foreign` is allowed by the orphan rules, for more information see
[INFO] [stdout]             https://doc.rust-lang.org/reference/items/implementations.html#trait-implementation-coherence
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#from_over_into
[INFO] [stdout] help: replace the `Into` implementation with `From<ast::Type>`
[INFO] [stdout]     |
[INFO] [stdout] 232 ~ impl From<Type> for usize {
[INFO] [stdout] 233 ~     fn from(val: Type) -> Self { val.0 }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/ast.rs:338:5
[INFO] [stdout]     |
[INFO] [stdout] 338 |     return s;
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]     = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 338 -     return s;
[INFO] [stdout] 338 +     s
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/lexer.rs:100:2
[INFO] [stdout]     |
[INFO] [stdout] 100 |     return self.content.parse().unwrap();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 100 -     return self.content.parse().unwrap();
[INFO] [stdout] 100 +     self.content.parse().unwrap()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/lexer.rs:105:2
[INFO] [stdout]     |
[INFO] [stdout] 105 |     return self.content.to_string();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 105 -     return self.content.to_string();
[INFO] [stdout] 105 +     self.content.to_string()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Token` has a public `len` method, but no `is_empty` method
[INFO] [stdout]    --> src/lexer.rs:114:5
[INFO] [stdout]     |
[INFO] [stdout] 114 |     pub fn len(&self) -> usize {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_without_is_empty
[INFO] [stdout]     = note: `#[warn(clippy::len_without_is_empty)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/lexer.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 144 | /         return Self {
[INFO] [stdout] 145 | |             input, chars, lookahead: None
[INFO] [stdout] 146 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 144 ~         Self {
[INFO] [stdout] 145 +             input, chars, lookahead: None
[INFO] [stdout] 146 +         }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `next` can be confused for the standard trait method `std::iter::Iterator::next`
[INFO] [stdout]    --> src/lexer.rs:168:5
[INFO] [stdout]     |
[INFO] [stdout] 168 | /     pub fn next(&mut self) -> Token<'a> {
[INFO] [stdout] 169 | |     // Check whether lookahead available
[INFO] [stdout] 170 | |     match self.lookahead {
[INFO] [stdout] 171 | |         Some(t) => {
[INFO] [stdout] ...   |
[INFO] [stdout] 191 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider implementing the trait `std::iter::Iterator` or choosing a less ambiguous method name
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#should_implement_trait
[INFO] [stdout]     = note: `#[warn(clippy::should_implement_trait)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `char::is_digit` with literal radix of 10
[INFO] [stdout]    --> src/lexer.rs:202:19
[INFO] [stdout]     |
[INFO] [stdout] 202 |         } else if ch.is_digit(10) {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^ help: try: `ch.is_ascii_digit()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#is_digit_ascii_radix
[INFO] [stdout]     = note: `#[warn(clippy::is_digit_ascii_radix)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `char::is_digit` with literal radix of 10
[INFO] [stdout]    --> src/lexer.rs:228:40
[INFO] [stdout]     |
[INFO] [stdout] 228 |         let end = self.scan_whilst(|c| c.is_digit(10));
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^ help: try: `c.is_ascii_digit()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#is_digit_ascii_radix
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `if` can be collapsed into the outer `match`
[INFO] [stdout]    --> src/lexer.rs:500:17
[INFO] [stdout]     |
[INFO] [stdout] 500 | /                 if *c == ch {
[INFO] [stdout] 501 | |                     // Consume character
[INFO] [stdout] 502 | |                     self.chars.next();
[INFO] [stdout] 503 | |                     true
[INFO] [stdout] 504 | |                 } else {
[INFO] [stdout] 505 | |                     false
[INFO] [stdout] 506 | |                 }
[INFO] [stdout]     | |_________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_match
[INFO] [stdout]     = note: `#[warn(clippy::collapsible_match)]` on by default
[INFO] [stdout] help: collapse nested if block
[INFO] [stdout]     |
[INFO] [stdout] 499 ~             Some((_,c))
[INFO] [stdout] 500 ~                 if *c == ch => {
[INFO] [stdout] 501 |                     // Consume character
[INFO] [stdout] 502 |                     self.chars.next();
[INFO] [stdout] 503 |                     true
[INFO] [stdout] 504 ~                 }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `char::is_digit` with literal radix of 10
[INFO] [stdout]    --> src/lexer.rs:526:5
[INFO] [stdout]     |
[INFO] [stdout] 526 |     c.is_digit(10) || is_identifier_start(c)
[INFO] [stdout]     |     ^^^^^^^^^^^^^^ help: try: `c.is_ascii_digit()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#is_digit_ascii_radix
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> src/parser.rs:98:35
[INFO] [stdout]    |
[INFO] [stdout] 98 |     let body = self.parse_stmt_block(&"")?;
[INFO] [stdout]    |                                      ^^^ help: change this to: `""`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout]    = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this match could be replaced by its body itself
[INFO] [stdout]    --> src/parser.rs:209:6
[INFO] [stdout]     |
[INFO] [stdout] 209 | /         match lookahead.kind {
[INFO] [stdout] 210 | |             _ => self.parse_unit_stmt()
[INFO] [stdout] 211 | |         }
[INFO] [stdout]     | |_________^ help: consider using the match body instead: `self.parse_unit_stmt()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_single_binding
[INFO] [stdout]     = note: `#[warn(clippy::match_single_binding)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/parser.rs:360:10
[INFO] [stdout]     |
[INFO] [stdout] 360 |             n = n + 1;
[INFO] [stdout]     |             ^^^^^^^^^ help: replace it with: `n += 1`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout]     = note: `#[warn(clippy::assign_op_pattern)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/parser.rs:484:24
[INFO] [stdout]     |
[INFO] [stdout] 484 |     Ok(Name::new(self.ast,&tok.content))
[INFO] [stdout]     |                           ^^^^^^^^^^^^ help: change this to: `tok.content`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/parser.rs:535:9
[INFO] [stdout]     |
[INFO] [stdout] 535 |         return lookahead.kind == kind;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 535 -         return lookahead.kind == kind;
[INFO] [stdout] 535 +         lookahead.kind == kind
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ast`
[INFO] [stdout]    --> src/ast.rs:218:15
[INFO] [stdout]     |
[INFO] [stdout] 218 |     pub fn is(ast: &AbstractSyntaxTree, t: &Node) -> bool {
[INFO] [stdout]     |               ^^^ help: if this is intentional, prefix it with an underscore: `_ast`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `slice`
[INFO] [stdout]    --> src/parser.rs:143:6
[INFO] [stdout]     |
[INFO] [stdout] 143 |     let slice = &self.lexer.input[start.start .. end];
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_slice`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `to_string` is never used
[INFO] [stdout]    --> src/ast.rs:328:4
[INFO] [stdout]     |
[INFO] [stdout] 328 | fn to_string<T:fmt::Display>(items : &[T]) -> String {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `env` and `mapper` are never read
[INFO] [stdout]   --> src/parser.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub struct Parser<'a, F>
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 46 |     env: Env,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 47 |     /// Provides mechanism for source maps
[INFO] [stdout] 48 |     mapper : F
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `matches` is never used
[INFO] [stdout]    --> src/parser.rs:546:8
[INFO] [stdout]     |
[INFO] [stdout]  52 | / impl<'a,'b,F> Parser<'a,F>
[INFO] [stdout]  53 | | where 'a :'b, F : FnMut(usize,&'a str) {
[INFO] [stdout]     | |______________________________________- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 546 |       fn matches(&mut self, kind : TokenType) -> Result<Token<'a>> {
[INFO] [stdout]     |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match expression looks like `matches!` macro
[INFO] [stdout]   --> src/ast.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 | /         match t {
[INFO] [stdout] 73 | |         Node::FunctionDecl(_) => true,
[INFO] [stdout] 74 | |         Node::MethodDecl(_) => true,
[INFO] [stdout] 75 | |             Node::TypeDecl(_) => true,
[INFO] [stdout] 76 | |             _ => false
[INFO] [stdout] 77 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_like_matches_macro
[INFO] [stdout]    = note: `#[warn(clippy::match_like_matches_macro)]` on by default
[INFO] [stdout] help: use `matches!` directly
[INFO] [stdout]    |
[INFO] [stdout] 72 -         match t {
[INFO] [stdout] 73 -         Node::FunctionDecl(_) => true,
[INFO] [stdout] 74 -         Node::MethodDecl(_) => true,
[INFO] [stdout] 75 -             Node::TypeDecl(_) => true,
[INFO] [stdout] 76 -             _ => false
[INFO] [stdout] 77 -         }
[INFO] [stdout] 72 +         matches!(t, Node::FunctionDecl(_) | Node::MethodDecl(_) | Node::TypeDecl(_))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an implementation of `From` is preferred since it gives you `Into<_>` for free where the reverse isn't true
[INFO] [stdout]   --> src/ast.rs:81:1
[INFO] [stdout]    |
[INFO] [stdout] 81 | impl Into<usize> for Decl {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: `impl From<Local> for Foreign` is allowed by the orphan rules, for more information see
[INFO] [stdout]            https://doc.rust-lang.org/reference/items/implementations.html#trait-implementation-coherence
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#from_over_into
[INFO] [stdout]    = note: `#[warn(clippy::from_over_into)]` on by default
[INFO] [stdout] help: replace the `Into` implementation with `From<ast::Decl>`
[INFO] [stdout]    |
[INFO] [stdout] 81 ~ impl From<Decl> for usize {
[INFO] [stdout] 82 ~     fn from(val: Decl) -> Self { val.index }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match expression looks like `matches!` macro
[INFO] [stdout]    --> src/ast.rs:116:9
[INFO] [stdout]     |
[INFO] [stdout] 116 | /         match t {
[INFO] [stdout] 117 | |         Node::AssertStmt(_) => true,
[INFO] [stdout] 118 | |         Node::BlockStmt(_) => true,
[INFO] [stdout] 119 | |         Node::SkipStmt(_) => true,
[INFO] [stdout] 120 | |             _ => false
[INFO] [stdout] 121 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_like_matches_macro
[INFO] [stdout] help: use `matches!` directly
[INFO] [stdout]     |
[INFO] [stdout] 116 -         match t {
[INFO] [stdout] 117 -         Node::AssertStmt(_) => true,
[INFO] [stdout] 118 -         Node::BlockStmt(_) => true,
[INFO] [stdout] 119 -         Node::SkipStmt(_) => true,
[INFO] [stdout] 120 -             _ => false
[INFO] [stdout] 121 -         }
[INFO] [stdout] 116 +         matches!(t, Node::AssertStmt(_) | Node::BlockStmt(_) | Node::SkipStmt(_))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an implementation of `From` is preferred since it gives you `Into<_>` for free where the reverse isn't true
[INFO] [stdout]    --> src/ast.rs:125:1
[INFO] [stdout]     |
[INFO] [stdout] 125 | impl Into<usize> for Stmt {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: `impl From<Local> for Foreign` is allowed by the orphan rules, for more information see
[INFO] [stdout]             https://doc.rust-lang.org/reference/items/implementations.html#trait-implementation-coherence
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#from_over_into
[INFO] [stdout] help: replace the `Into` implementation with `From<ast::Stmt>`
[INFO] [stdout]     |
[INFO] [stdout] 125 ~ impl From<Stmt> for usize {
[INFO] [stdout] 126 ~     fn from(val: Stmt) -> Self { val.0 }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match expression looks like `matches!` macro
[INFO] [stdout]    --> src/ast.rs:160:9
[INFO] [stdout]     |
[INFO] [stdout] 160 | /         match t {
[INFO] [stdout] 161 | |         Node::BoolExpr(_) => true,
[INFO] [stdout] 162 | |         Node::EqualsExpr(_) => true,
[INFO] [stdout] 163 | |         Node::LessThanExpr(_) => true,
[INFO] [stdout] ...   |
[INFO] [stdout] 167 | |             _ => false
[INFO] [stdout] 168 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_like_matches_macro
[INFO] [stdout] help: use `matches!` directly
[INFO] [stdout]     |
[INFO] [stdout] 160 -         match t {
[INFO] [stdout] 161 -         Node::BoolExpr(_) => true,
[INFO] [stdout] 162 -         Node::EqualsExpr(_) => true,
[INFO] [stdout] 163 -         Node::LessThanExpr(_) => true,
[INFO] [stdout] 164 -         Node::NotEqualsExpr(_) => true,
[INFO] [stdout] 165 -         Node::IntExpr(_) => true,
[INFO] [stdout] 166 -         Node::VarExpr(_) => true,
[INFO] [stdout] 167 -             _ => false
[INFO] [stdout] 168 -         }
[INFO] [stdout] 160 +         matches!(t, Node::BoolExpr(_) | Node::EqualsExpr(_) | Node::LessThanExpr(_) | Node::NotEqualsExpr(_) | Node::IntExpr(_) | Node::VarExpr(_))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an implementation of `From` is preferred since it gives you `Into<_>` for free where the reverse isn't true
[INFO] [stdout]    --> src/ast.rs:172:1
[INFO] [stdout]     |
[INFO] [stdout] 172 | impl Into<usize> for Expr {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: `impl From<Local> for Foreign` is allowed by the orphan rules, for more information see
[INFO] [stdout]             https://doc.rust-lang.org/reference/items/implementations.html#trait-implementation-coherence
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#from_over_into
[INFO] [stdout] help: replace the `Into` implementation with `From<ast::Expr>`
[INFO] [stdout]     |
[INFO] [stdout] 172 ~ impl From<Expr> for usize {
[INFO] [stdout] 173 ~     fn from(val: Expr) -> Self { val.0 }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match expression looks like `matches!` macro
[INFO] [stdout]    --> src/ast.rs:219:9
[INFO] [stdout]     |
[INFO] [stdout] 219 | /         match t {
[INFO] [stdout] 220 | |             Node::BoolType(_) => true,
[INFO] [stdout] 221 | |             Node::IntType(_) => true,
[INFO] [stdout] 222 | |             Node::NullType(_) => true,
[INFO] [stdout] ...   |
[INFO] [stdout] 227 | |             _ => false
[INFO] [stdout] 228 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_like_matches_macro
[INFO] [stdout] help: use `matches!` directly
[INFO] [stdout]     |
[INFO] [stdout] 219 -         match t {
[INFO] [stdout] 220 -             Node::BoolType(_) => true,
[INFO] [stdout] 221 -             Node::IntType(_) => true,
[INFO] [stdout] 222 -             Node::NullType(_) => true,
[INFO] [stdout] 223 -             Node::VoidType(_) => true,
[INFO] [stdout] 224 -             Node::ArrayType(_) => true,
[INFO] [stdout] 225 -             Node::ReferenceType(_) => true,
[INFO] [stdout] 226 -             Node::RecordType(_) => true,
[INFO] [stdout] 227 -             _ => false
[INFO] [stdout] 228 -         }
[INFO] [stdout] 219 +         matches!(t, Node::BoolType(_) | Node::IntType(_) | Node::NullType(_) | Node::VoidType(_) | Node::ArrayType(_) | Node::ReferenceType(_) | Node::RecordType(_))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an implementation of `From` is preferred since it gives you `Into<_>` for free where the reverse isn't true
[INFO] [stdout]    --> src/ast.rs:232:1
[INFO] [stdout]     |
[INFO] [stdout] 232 | impl Into<usize> for Type {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: `impl From<Local> for Foreign` is allowed by the orphan rules, for more information see
[INFO] [stdout]             https://doc.rust-lang.org/reference/items/implementations.html#trait-implementation-coherence
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#from_over_into
[INFO] [stdout] help: replace the `Into` implementation with `From<ast::Type>`
[INFO] [stdout]     |
[INFO] [stdout] 232 ~ impl From<Type> for usize {
[INFO] [stdout] 233 ~     fn from(val: Type) -> Self { val.0 }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/ast.rs:338:5
[INFO] [stdout]     |
[INFO] [stdout] 338 |     return s;
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]     = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 338 -     return s;
[INFO] [stdout] 338 +     s
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/lexer.rs:100:2
[INFO] [stdout]     |
[INFO] [stdout] 100 |     return self.content.parse().unwrap();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 100 -     return self.content.parse().unwrap();
[INFO] [stdout] 100 +     self.content.parse().unwrap()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/lexer.rs:105:2
[INFO] [stdout]     |
[INFO] [stdout] 105 |     return self.content.to_string();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 105 -     return self.content.to_string();
[INFO] [stdout] 105 +     self.content.to_string()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Token` has a public `len` method, but no `is_empty` method
[INFO] [stdout]    --> src/lexer.rs:114:5
[INFO] [stdout]     |
[INFO] [stdout] 114 |     pub fn len(&self) -> usize {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_without_is_empty
[INFO] [stdout]     = note: `#[warn(clippy::len_without_is_empty)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/lexer.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 144 | /         return Self {
[INFO] [stdout] 145 | |             input, chars, lookahead: None
[INFO] [stdout] 146 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 144 ~         Self {
[INFO] [stdout] 145 +             input, chars, lookahead: None
[INFO] [stdout] 146 +         }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `next` can be confused for the standard trait method `std::iter::Iterator::next`
[INFO] [stdout]    --> src/lexer.rs:168:5
[INFO] [stdout]     |
[INFO] [stdout] 168 | /     pub fn next(&mut self) -> Token<'a> {
[INFO] [stdout] 169 | |     // Check whether lookahead available
[INFO] [stdout] 170 | |     match self.lookahead {
[INFO] [stdout] 171 | |         Some(t) => {
[INFO] [stdout] ...   |
[INFO] [stdout] 191 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider implementing the trait `std::iter::Iterator` or choosing a less ambiguous method name
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#should_implement_trait
[INFO] [stdout]     = note: `#[warn(clippy::should_implement_trait)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `char::is_digit` with literal radix of 10
[INFO] [stdout]    --> src/lexer.rs:202:19
[INFO] [stdout]     |
[INFO] [stdout] 202 |         } else if ch.is_digit(10) {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^ help: try: `ch.is_ascii_digit()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#is_digit_ascii_radix
[INFO] [stdout]     = note: `#[warn(clippy::is_digit_ascii_radix)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `char::is_digit` with literal radix of 10
[INFO] [stdout]    --> src/lexer.rs:228:40
[INFO] [stdout]     |
[INFO] [stdout] 228 |         let end = self.scan_whilst(|c| c.is_digit(10));
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^ help: try: `c.is_ascii_digit()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#is_digit_ascii_radix
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `if` can be collapsed into the outer `match`
[INFO] [stdout]    --> src/lexer.rs:500:17
[INFO] [stdout]     |
[INFO] [stdout] 500 | /                 if *c == ch {
[INFO] [stdout] 501 | |                     // Consume character
[INFO] [stdout] 502 | |                     self.chars.next();
[INFO] [stdout] 503 | |                     true
[INFO] [stdout] 504 | |                 } else {
[INFO] [stdout] 505 | |                     false
[INFO] [stdout] 506 | |                 }
[INFO] [stdout]     | |_________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_match
[INFO] [stdout]     = note: `#[warn(clippy::collapsible_match)]` on by default
[INFO] [stdout] help: collapse nested if block
[INFO] [stdout]     |
[INFO] [stdout] 499 ~             Some((_,c))
[INFO] [stdout] 500 ~                 if *c == ch => {
[INFO] [stdout] 501 |                     // Consume character
[INFO] [stdout] 502 |                     self.chars.next();
[INFO] [stdout] 503 |                     true
[INFO] [stdout] 504 ~                 }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `char::is_digit` with literal radix of 10
[INFO] [stdout]    --> src/lexer.rs:526:5
[INFO] [stdout]     |
[INFO] [stdout] 526 |     c.is_digit(10) || is_identifier_start(c)
[INFO] [stdout]     |     ^^^^^^^^^^^^^^ help: try: `c.is_ascii_digit()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#is_digit_ascii_radix
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ast`
[INFO] [stdout]    --> tests/micro.rs:203:9
[INFO] [stdout]     |
[INFO] [stdout] 203 |     let ast = check_parse("function f()->() :\n skip");
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_ast`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> src/parser.rs:98:35
[INFO] [stdout]    |
[INFO] [stdout] 98 |     let body = self.parse_stmt_block(&"")?;
[INFO] [stdout]    |                                      ^^^ help: change this to: `""`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout]    = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ast`
[INFO] [stdout]    --> tests/micro.rs:336:9
[INFO] [stdout]     |
[INFO] [stdout] 336 |     let ast = check_type_error("function f() -> ():\n assert b");
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_ast`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this match could be replaced by its body itself
[INFO] [stdout]    --> src/parser.rs:209:6
[INFO] [stdout]     |
[INFO] [stdout] 209 | /         match lookahead.kind {
[INFO] [stdout] 210 | |             _ => self.parse_unit_stmt()
[INFO] [stdout] 211 | |         }
[INFO] [stdout]     | |_________^ help: consider using the match body instead: `self.parse_unit_stmt()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_single_binding
[INFO] [stdout]     = note: `#[warn(clippy::match_single_binding)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `type_mapper` is never used
[INFO] [stdout]    --> tests/micro.rs:364:4
[INFO] [stdout]     |
[INFO] [stdout] 364 | fn type_mapper<'a>(_: usize, _: Type) { }
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/parser.rs:360:10
[INFO] [stdout]     |
[INFO] [stdout] 360 |             n = n + 1;
[INFO] [stdout]     |             ^^^^^^^^^ help: replace it with: `n += 1`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout]     = note: `#[warn(clippy::assign_op_pattern)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/parser.rs:484:24
[INFO] [stdout]     |
[INFO] [stdout] 484 |     Ok(Name::new(self.ast,&tok.content))
[INFO] [stdout]     |                           ^^^^^^^^^^^^ help: change this to: `tok.content`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/parser.rs:535:9
[INFO] [stdout]     |
[INFO] [stdout] 535 |         return lookahead.kind == kind;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 535 -         return lookahead.kind == kind;
[INFO] [stdout] 535 +         lookahead.kind == kind
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this let-binding has unit value
[INFO] [stdout]    --> tests/micro.rs:336:5
[INFO] [stdout]     |
[INFO] [stdout] 336 |     let ast = check_type_error("function f() -> ():\n assert b");
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_unit_value
[INFO] [stdout]     = note: `#[warn(clippy::let_unit_value)]` on by default
[INFO] [stdout] help: omit the `let` binding
[INFO] [stdout]     |
[INFO] [stdout] 336 -     let ast = check_type_error("function f() -> ():\n assert b");
[INFO] [stdout] 336 +     check_type_error("function f() -> ():\n assert b");
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the following explicit lifetimes could be elided: 'a
[INFO] [stdout]    --> tests/micro.rs:361:18
[INFO] [stdout]     |
[INFO] [stdout] 361 | fn source_mapper<'a>(_: usize, _: &'a str) { }
[INFO] [stdout]     |                  ^^                ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
[INFO] [stdout]     = note: `#[warn(clippy::needless_lifetimes)]` on by default
[INFO] [stdout] help: elide the lifetimes
[INFO] [stdout]     |
[INFO] [stdout] 361 - fn source_mapper<'a>(_: usize, _: &'a str) { }
[INFO] [stdout] 361 + fn source_mapper(_: usize, _: &str) { }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this lifetime isn't used in the function definition
[INFO] [stdout]    --> tests/micro.rs:364:16
[INFO] [stdout]     |
[INFO] [stdout] 364 | fn type_mapper<'a>(_: usize, _: Type) { }
[INFO] [stdout]     |                ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#extra_unused_lifetimes
[INFO] [stdout]     = note: `#[warn(clippy::extra_unused_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> tests/micro.rs:373:13
[INFO] [stdout]     |
[INFO] [stdout] 373 |     assert!(!d.is_err());
[INFO] [stdout]     |             ^^^^^^^^^^^ help: try: `d.is_ok()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]     = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> tests/micro.rs:397:13
[INFO] [stdout]     |
[INFO] [stdout] 397 |     assert!(!d.is_err());
[INFO] [stdout]     |             ^^^^^^^^^^^ help: try: `d.is_ok()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `Command { std: "docker" "inspect" "cc70805ab0e348db340b611d047d28c301b11d137ba6a19bfc172cc1c6bc7f6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc70805ab0e348db340b611d047d28c301b11d137ba6a19bfc172cc1c6bc7f6e", kill_on_drop: false }`
[INFO] [stdout] cc70805ab0e348db340b611d047d28c301b11d137ba6a19bfc172cc1c6bc7f6e