[INFO] cloning repository https://github.com/K-JBoon/bawk
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/K-JBoon/bawk" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FK-JBoon%2Fbawk", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FK-JBoon%2Fbawk'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d810cd5a669a1c2aabe8f2806363cf5ea45379b5
[INFO] linting K-JBoon/bawk against nightly for clippy-nonminimal_bool-denied
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FK-JBoon%2Fbawk" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/K-JBoon/bawk
[INFO] finished tweaking git repo https://github.com/K-JBoon/bawk
[INFO] tweaked toml for git repo https://github.com/K-JBoon/bawk written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/K-JBoon/bawk 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] crate git repo https://github.com/K-JBoon/bawk already has a lockfile, it will not be regenerated
[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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unicode-xid v0.1.0
[INFO] [stderr]   Downloaded bit-vec v0.4.4
[INFO] [stderr]   Downloaded redfa v0.0.2
[INFO] [stderr]   Downloaded quote v0.6.13
[INFO] [stderr]   Downloaded proc-macro2 v0.4.30
[INFO] [stderr]   Downloaded bit-set v0.4.0
[INFO] [stderr]   Downloaded vec_map v0.6.0
[INFO] [stderr]   Downloaded lalr v0.0.2
[INFO] [stderr]   Downloaded plex v0.2.5
[INFO] [stderr]   Downloaded syn v0.15.44
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] fd4d5b46e1c2cf6c0958ec748b8fff873de46a0b411ce62d6906e2f5d53d248b
[INFO] running `Command { std: "docker" "start" "-a" "fd4d5b46e1c2cf6c0958ec748b8fff873de46a0b411ce62d6906e2f5d53d248b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd4d5b46e1c2cf6c0958ec748b8fff873de46a0b411ce62d6906e2f5d53d248b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd4d5b46e1c2cf6c0958ec748b8fff873de46a0b411ce62d6906e2f5d53d248b", kill_on_drop: false }`
[INFO] [stdout] fd4d5b46e1c2cf6c0958ec748b8fff873de46a0b411ce62d6906e2f5d53d248b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] b5e507072d27b7f6ded6bc2bf2db76c7ef6207d3c25605588ab2fa4d303dacdd
[INFO] running `Command { std: "docker" "start" "-a" "b5e507072d27b7f6ded6bc2bf2db76c7ef6207d3c25605588ab2fa4d303dacdd", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling bit-vec v0.4.4
[INFO] [stderr]    Compiling vec_map v0.6.0
[INFO] [stderr]    Compiling lalr v0.0.2
[INFO] [stderr]    Compiling bit-set v0.4.0
[INFO] [stderr]    Compiling redfa v0.0.2
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling plex v0.2.5
[INFO] [stderr]     Checking bawk v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unneeded unit expression
[INFO] [stdout]   --> src/interpreter.rs:50:24
[INFO] [stdout]    |
[INFO] [stdout] 50 |                 _ => { () /* Just continue as normal, implement pattern rule here later */ }
[INFO] [stdout]    |                        ^^ help: remove the final `()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stdout]    = note: `#[warn(clippy::unused_unit)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded unit expression
[INFO] [stdout]   --> src/interpreter.rs:50:24
[INFO] [stdout]    |
[INFO] [stdout] 50 |                 _ => { () /* Just continue as normal, implement pattern rule here later */ }
[INFO] [stdout]    |                        ^^ help: remove the final `()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stdout]    = note: `#[warn(clippy::unused_unit)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: try not to call a closure in the expression where it is declared
[INFO] [stdout]   --> src/parser.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |         Print assign[a] Semi => Expr {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stdout]    = note: `#[warn(clippy::redundant_closure_call)]` on by default
[INFO] [stdout] help: try doing something like
[INFO] [stdout]    |
[INFO] [stdout] 55 ~         Expr {
[INFO] [stdout] 56 +             span: span!(),
[INFO] [stdout] 57 +             node: Expr_::Print(Box::new(a)),
[INFO] [stdout] 58 ~         } => Expr {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: try not to call a closure in the expression where it is declared
[INFO] [stdout]   --> src/parser.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 |         Ident(var) Equals assign[rhs] Semi => Expr {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try doing something like: `Ident(var) Equals assign[rhs] Semi`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&mut Vec` instead of `&mut [_]` involves a new object where a slice will do
[INFO] [stdout]   --> src/parser.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |         atom[a] => a,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout]    = note: `#[warn(clippy::ptr_arg)]` on by default
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 63 -         atom[a] => a,
[INFO] [stdout] 63 +         &mut [atom[a]] => a,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: try not to call a closure in the expression where it is declared
[INFO] [stdout]   --> src/parser.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |         atom[a] => a,
[INFO] [stdout]    |         ^^^^^^^ help: try doing something like: `a`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&mut Vec` instead of `&mut [_]` involves a new object where a slice will do
[INFO] [stdout]   --> src/parser.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 68 |         Ident(i) => Expr {
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 68 -         Ident(i) => Expr {
[INFO] [stdout] 68 +         &mut [Ident(i)] => Expr {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: try not to call a closure in the expression where it is declared
[INFO] [stdout]   --> src/parser.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 68 |         Ident(i) => Expr {
[INFO] [stdout]    |         ^^^^^^^^ help: try doing something like: `Ident(i)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&mut Vec` instead of `&mut [_]` involves a new object where a slice will do
[INFO] [stdout]   --> src/parser.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |         Integer(i) => Expr {
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 72 -         Integer(i) => Expr {
[INFO] [stdout] 72 +         &mut [Integer(i)] => Expr {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: try not to call a closure in the expression where it is declared
[INFO] [stdout]   --> src/parser.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |         Integer(i) => Expr {
[INFO] [stdout]    |         ^^^^^^^^^^ help: try doing something like: `Integer(i)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&mut Vec` instead of `&mut [_]` involves a new object where a slice will do
[INFO] [stdout]   --> src/parser.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |         Text(t) => Expr {
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 76 -         Text(t) => Expr {
[INFO] [stdout] 76 +         &mut [Text(t)] => Expr {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: try not to call a closure in the expression where it is declared
[INFO] [stdout]   --> src/parser.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |         Text(t) => Expr {
[INFO] [stdout]    |         ^^^^^^^ help: try doing something like: `Text(t)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: try not to call a closure in the expression where it is declared
[INFO] [stdout]   --> src/parser.rs:80:9
[INFO] [stdout]    |
[INFO] [stdout] 80 |         LParen assign[a] RParen => a
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^ help: try doing something like: `a`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&mut Vec` instead of `&mut [_]` involves a new object where a slice will do
[INFO] [stdout]   --> src/parser.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |             rules[r] => Program { rules: r }
[INFO] [stdout]    |             ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 19 -             rules[r] => Program { rules: r }
[INFO] [stdout] 19 +             &mut [rules[r]] => Program { rules: r }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: try not to call a closure in the expression where it is declared
[INFO] [stdout]   --> src/parser.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |             rules[r] => Program { rules: r }
[INFO] [stdout]    |             ^^^^^^^^ help: try doing something like: `Program { rules: r }`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: try not to call a closure in the expression where it is declared
[INFO] [stdout]   --> src/parser.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |         => vec![],
[INFO] [stdout]    |         ^^ help: try doing something like: `vec![]`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: try not to call a closure in the expression where it is declared
[INFO] [stdout]   --> src/parser.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |         rules[mut rls] BeginRule statements[stmts] => {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stdout] help: try doing something like
[INFO] [stdout]    |
[INFO] [stdout] 24 ~         {
[INFO] [stdout] 25 +             rls.push(Rule { rule_type: RuleType::BeginRule, statements: stmts });
[INFO] [stdout] 26 +             rls
[INFO] [stdout] 27 ~         } => {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: try not to call a closure in the expression where it is declared
[INFO] [stdout]   --> src/parser.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |         rules[mut rls] DefaultRule statements[stmts] => {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stdout] help: try doing something like
[INFO] [stdout]    |
[INFO] [stdout] 28 ~         {
[INFO] [stdout] 29 +             rls.push(Rule { rule_type: RuleType::DefaultRule, statements: stmts });
[INFO] [stdout] 30 +             rls
[INFO] [stdout] 31 ~         } => {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: try not to call a closure in the expression where it is declared
[INFO] [stdout]   --> src/parser.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         rules[mut rls] EndRule statements[stmts] => {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stdout] help: try doing something like
[INFO] [stdout]    |
[INFO] [stdout] 32 ~         {
[INFO] [stdout] 33 +             rls.push(Rule { rule_type: RuleType::EndRule, statements: stmts });
[INFO] [stdout] 34 +             rls
[INFO] [stdout] 35 ~         } => {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: try not to call a closure in the expression where it is declared
[INFO] [stdout]   --> src/parser.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |         => Statement { expressions: vec![] },
[INFO] [stdout]    |         ^^ help: try doing something like: `Statement { expressions: vec![] }`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: try not to call a closure in the expression where it is declared
[INFO] [stdout]   --> src/parser.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |         statement[mut st] assign[a] => {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stdout] help: try doing something like
[INFO] [stdout]    |
[INFO] [stdout] 48 ~         {
[INFO] [stdout] 49 +             st.expressions.push(a);
[INFO] [stdout] 50 +             st
[INFO] [stdout] 51 ~         } => {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: try not to call a closure in the expression where it is declared
[INFO] [stdout]   --> src/parser.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |         => vec![],
[INFO] [stdout]    |         ^^ help: try doing something like: `vec![]`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: try not to call a closure in the expression where it is declared
[INFO] [stdout]   --> src/parser.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |         statements[mut sts] statement[s] EndOfRule => {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stdout] help: try doing something like
[INFO] [stdout]    |
[INFO] [stdout] 40 ~         {
[INFO] [stdout] 41 +             sts.push(s);
[INFO] [stdout] 42 +             sts
[INFO] [stdout] 43 ~         } => {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stdout]   --> src/parser.rs:86:6
[INFO] [stdout]    |
[INFO] [stdout] 86 | ) -> Result<Program, (Option<(Token, Span)>, &'static str)> {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stdout]    = note: `#[warn(clippy::type_complexity)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the following explicit lifetimes could be elided: 'a
[INFO] [stdout]  --> src/interpreter.rs:7:15
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn interp<'a>(p: &'a Program, file_path: &String) -> io::Result<()> {
[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] 7 - pub fn interp<'a>(p: &'a Program, file_path: &String) -> io::Result<()> {
[INFO] [stdout] 7 + pub fn interp(p: &Program, file_path: &String) -> io::Result<()> {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/interpreter.rs:48:24
[INFO] [stdout]    |
[INFO] [stdout] 48 |                     if !lines.peek().is_none() { continue; } 
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `lines.peek().is_some()`
[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 expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> src/interpreter.rs:55:43
[INFO] [stdout]    |
[INFO] [stdout] 55 |                     interp_expr(&mut env, &expr, &line);
[INFO] [stdout]    |                                           ^^^^^ help: change this to: `expr`
[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: the following explicit lifetimes could be elided: 'a
[INFO] [stdout]   --> src/interpreter.rs:66:16
[INFO] [stdout]    |
[INFO] [stdout] 66 | fn interp_expr<'a>(env: &mut HashMap<String, BawkType>, expr: &'a Expr, l: &str) -> BawkType {
[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] help: elide the lifetimes
[INFO] [stdout]    |
[INFO] [stdout] 66 - fn interp_expr<'a>(env: &mut HashMap<String, BawkType>, expr: &'a Expr, l: &str) -> BawkType {
[INFO] [stdout] 66 + fn interp_expr(env: &mut HashMap<String, BawkType>, expr: &Expr, l: &str) -> BawkType {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: parameter is only used in recursion
[INFO] [stdout]   --> src/interpreter.rs:66:73
[INFO] [stdout]    |
[INFO] [stdout] 66 | fn interp_expr<'a>(env: &mut HashMap<String, BawkType>, expr: &'a Expr, l: &str) -> BawkType {
[INFO] [stdout]    |                                                                         ^ help: if this is intentional, prefix it with an underscore: `_l`
[INFO] [stdout]    |
[INFO] [stdout] note: parameter used here
[INFO] [stdout]   --> src/interpreter.rs:71:43
[INFO] [stdout]    |
[INFO] [stdout] 71 |             let val = interp_expr(env, b, l);
[INFO] [stdout]    |                                           ^
[INFO] [stdout] ...
[INFO] [stdout] 79 |             let val = interp_expr(env, e, l);
[INFO] [stdout]    |                                           ^
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#only_used_in_recursion
[INFO] [stdout]    = note: `#[warn(clippy::only_used_in_recursion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: feature `proc_macro_hygiene` is declared but not used
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_hygiene)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_features)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: try not to call a closure in the expression where it is declared
[INFO] [stdout]   --> src/parser.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |         Print assign[a] Semi => Expr {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stdout]    = note: `#[warn(clippy::redundant_closure_call)]` on by default
[INFO] [stdout] help: try doing something like
[INFO] [stdout]    |
[INFO] [stdout] 55 ~         Expr {
[INFO] [stdout] 56 +             span: span!(),
[INFO] [stdout] 57 +             node: Expr_::Print(Box::new(a)),
[INFO] [stdout] 58 ~         } => Expr {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: try not to call a closure in the expression where it is declared
[INFO] [stdout]   --> src/parser.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 |         Ident(var) Equals assign[rhs] Semi => Expr {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try doing something like: `Ident(var) Equals assign[rhs] Semi`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&mut Vec` instead of `&mut [_]` involves a new object where a slice will do
[INFO] [stdout]   --> src/parser.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |         atom[a] => a,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout]    = note: `#[warn(clippy::ptr_arg)]` on by default
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 63 -         atom[a] => a,
[INFO] [stdout] 63 +         &mut [atom[a]] => a,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: try not to call a closure in the expression where it is declared
[INFO] [stdout]   --> src/parser.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |         atom[a] => a,
[INFO] [stdout]    |         ^^^^^^^ help: try doing something like: `a`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&mut Vec` instead of `&mut [_]` involves a new object where a slice will do
[INFO] [stdout]   --> src/parser.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 68 |         Ident(i) => Expr {
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 68 -         Ident(i) => Expr {
[INFO] [stdout] 68 +         &mut [Ident(i)] => Expr {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: try not to call a closure in the expression where it is declared
[INFO] [stdout]   --> src/parser.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 68 |         Ident(i) => Expr {
[INFO] [stdout]    |         ^^^^^^^^ help: try doing something like: `Ident(i)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&mut Vec` instead of `&mut [_]` involves a new object where a slice will do
[INFO] [stdout]   --> src/parser.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |         Integer(i) => Expr {
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 72 -         Integer(i) => Expr {
[INFO] [stdout] 72 +         &mut [Integer(i)] => Expr {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: try not to call a closure in the expression where it is declared
[INFO] [stdout]   --> src/parser.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |         Integer(i) => Expr {
[INFO] [stdout]    |         ^^^^^^^^^^ help: try doing something like: `Integer(i)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&mut Vec` instead of `&mut [_]` involves a new object where a slice will do
[INFO] [stdout]   --> src/parser.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |         Text(t) => Expr {
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 76 -         Text(t) => Expr {
[INFO] [stdout] 76 +         &mut [Text(t)] => Expr {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: try not to call a closure in the expression where it is declared
[INFO] [stdout]   --> src/parser.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |         Text(t) => Expr {
[INFO] [stdout]    |         ^^^^^^^ help: try doing something like: `Text(t)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: try not to call a closure in the expression where it is declared
[INFO] [stdout]   --> src/parser.rs:80:9
[INFO] [stdout]    |
[INFO] [stdout] 80 |         LParen assign[a] RParen => a
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^ help: try doing something like: `a`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&mut Vec` instead of `&mut [_]` involves a new object where a slice will do
[INFO] [stdout]   --> src/parser.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |             rules[r] => Program { rules: r }
[INFO] [stdout]    |             ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 19 -             rules[r] => Program { rules: r }
[INFO] [stdout] 19 +             &mut [rules[r]] => Program { rules: r }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: try not to call a closure in the expression where it is declared
[INFO] [stdout]   --> src/parser.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |             rules[r] => Program { rules: r }
[INFO] [stdout]    |             ^^^^^^^^ help: try doing something like: `Program { rules: r }`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: try not to call a closure in the expression where it is declared
[INFO] [stdout]   --> src/parser.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |         => vec![],
[INFO] [stdout]    |         ^^ help: try doing something like: `vec![]`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: try not to call a closure in the expression where it is declared
[INFO] [stdout]   --> src/parser.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |         rules[mut rls] BeginRule statements[stmts] => {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stdout] help: try doing something like
[INFO] [stdout]    |
[INFO] [stdout] 24 ~         {
[INFO] [stdout] 25 +             rls.push(Rule { rule_type: RuleType::BeginRule, statements: stmts });
[INFO] [stdout] 26 +             rls
[INFO] [stdout] 27 ~         } => {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: try not to call a closure in the expression where it is declared
[INFO] [stdout]   --> src/parser.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |         rules[mut rls] DefaultRule statements[stmts] => {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stdout] help: try doing something like
[INFO] [stdout]    |
[INFO] [stdout] 28 ~         {
[INFO] [stdout] 29 +             rls.push(Rule { rule_type: RuleType::DefaultRule, statements: stmts });
[INFO] [stdout] 30 +             rls
[INFO] [stdout] 31 ~         } => {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: try not to call a closure in the expression where it is declared
[INFO] [stdout]   --> src/parser.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         rules[mut rls] EndRule statements[stmts] => {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stdout] help: try doing something like
[INFO] [stdout]    |
[INFO] [stdout] 32 ~         {
[INFO] [stdout] 33 +             rls.push(Rule { rule_type: RuleType::EndRule, statements: stmts });
[INFO] [stdout] 34 +             rls
[INFO] [stdout] 35 ~         } => {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: try not to call a closure in the expression where it is declared
[INFO] [stdout]   --> src/parser.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |         => Statement { expressions: vec![] },
[INFO] [stdout]    |         ^^ help: try doing something like: `Statement { expressions: vec![] }`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: try not to call a closure in the expression where it is declared
[INFO] [stdout]   --> src/parser.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |         statement[mut st] assign[a] => {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stdout] help: try doing something like
[INFO] [stdout]    |
[INFO] [stdout] 48 ~         {
[INFO] [stdout] 49 +             st.expressions.push(a);
[INFO] [stdout] 50 +             st
[INFO] [stdout] 51 ~         } => {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: try not to call a closure in the expression where it is declared
[INFO] [stdout]   --> src/parser.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |         => vec![],
[INFO] [stdout]    |         ^^ help: try doing something like: `vec![]`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: try not to call a closure in the expression where it is declared
[INFO] [stdout]   --> src/parser.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |         statements[mut sts] statement[s] EndOfRule => {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure_call
[INFO] [stdout] help: try doing something like
[INFO] [stdout]    |
[INFO] [stdout] 40 ~         {
[INFO] [stdout] 41 +             sts.push(s);
[INFO] [stdout] 42 +             sts
[INFO] [stdout] 43 ~         } => {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stdout]   --> src/parser.rs:86:6
[INFO] [stdout]    |
[INFO] [stdout] 86 | ) -> Result<Program, (Option<(Token, Span)>, &'static str)> {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stdout]    = note: `#[warn(clippy::type_complexity)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the following explicit lifetimes could be elided: 'a
[INFO] [stdout]  --> src/interpreter.rs:7:15
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn interp<'a>(p: &'a Program, file_path: &String) -> io::Result<()> {
[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] 7 - pub fn interp<'a>(p: &'a Program, file_path: &String) -> io::Result<()> {
[INFO] [stdout] 7 + pub fn interp(p: &Program, file_path: &String) -> io::Result<()> {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/interpreter.rs:48:24
[INFO] [stdout]    |
[INFO] [stdout] 48 |                     if !lines.peek().is_none() { continue; } 
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `lines.peek().is_some()`
[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 expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> src/interpreter.rs:55:43
[INFO] [stdout]    |
[INFO] [stdout] 55 |                     interp_expr(&mut env, &expr, &line);
[INFO] [stdout]    |                                           ^^^^^ help: change this to: `expr`
[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: the following explicit lifetimes could be elided: 'a
[INFO] [stdout]   --> src/interpreter.rs:66:16
[INFO] [stdout]    |
[INFO] [stdout] 66 | fn interp_expr<'a>(env: &mut HashMap<String, BawkType>, expr: &'a Expr, l: &str) -> BawkType {
[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] help: elide the lifetimes
[INFO] [stdout]    |
[INFO] [stdout] 66 - fn interp_expr<'a>(env: &mut HashMap<String, BawkType>, expr: &'a Expr, l: &str) -> BawkType {
[INFO] [stdout] 66 + fn interp_expr(env: &mut HashMap<String, BawkType>, expr: &Expr, l: &str) -> BawkType {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: parameter is only used in recursion
[INFO] [stdout]   --> src/interpreter.rs:66:73
[INFO] [stdout]    |
[INFO] [stdout] 66 | fn interp_expr<'a>(env: &mut HashMap<String, BawkType>, expr: &'a Expr, l: &str) -> BawkType {
[INFO] [stdout]    |                                                                         ^ help: if this is intentional, prefix it with an underscore: `_l`
[INFO] [stdout]    |
[INFO] [stdout] note: parameter used here
[INFO] [stdout]   --> src/interpreter.rs:71:43
[INFO] [stdout]    |
[INFO] [stdout] 71 |             let val = interp_expr(env, b, l);
[INFO] [stdout]    |                                           ^
[INFO] [stdout] ...
[INFO] [stdout] 79 |             let val = interp_expr(env, e, l);
[INFO] [stdout]    |                                           ^
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#only_used_in_recursion
[INFO] [stdout]    = note: `#[warn(clippy::only_used_in_recursion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: feature `proc_macro_hygiene` is declared but not used
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_hygiene)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_features)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.99s
[INFO] running `Command { std: "docker" "inspect" "b5e507072d27b7f6ded6bc2bf2db76c7ef6207d3c25605588ab2fa4d303dacdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5e507072d27b7f6ded6bc2bf2db76c7ef6207d3c25605588ab2fa4d303dacdd", kill_on_drop: false }`
[INFO] [stdout] b5e507072d27b7f6ded6bc2bf2db76c7ef6207d3c25605588ab2fa4d303dacdd