[INFO] updating cached repository ryotsu/lox
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ryotsu/lox
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ryotsu/lox" "work/ex/clippy-test-run/sources/stable/gh/ryotsu/lox"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/ryotsu/lox'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ryotsu/lox" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/ryotsu/lox"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/ryotsu/lox'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c2631f9d9a4d10fe3a1be164fb7dc237c8e89e63
[INFO] sha for GitHub repo ryotsu/lox: c2631f9d9a4d10fe3a1be164fb7dc237c8e89e63
[INFO] validating manifest of ryotsu/lox on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ryotsu/lox on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ryotsu/lox
[INFO] finished frobbing ryotsu/lox
[INFO] frobbed toml for ryotsu/lox written to work/ex/clippy-test-run/sources/stable/gh/ryotsu/lox/Cargo.toml
[INFO] started frobbing ryotsu/lox
[INFO] finished frobbing ryotsu/lox
[INFO] frobbed toml for ryotsu/lox written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/ryotsu/lox/Cargo.toml
[INFO] crate ryotsu/lox has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting ryotsu/lox against stable+rustflags=-Dclippy::into_iter_on_array for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-2/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/ryotsu/lox:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dclippy::into_iter_on_array" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 32503cd12fb64eff17b6131ae19d6dd8044c50e006ef672b4654b9fa39216854
[INFO] running `"docker" "start" "-a" "32503cd12fb64eff17b6131ae19d6dd8044c50e006ef672b4654b9fa39216854"`
[INFO] [stderr]     Checking lox v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lib/parser/expression.rs:47:25
[INFO] [stderr]    |
[INFO] [stderr] 47 |                         variable: variable,
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^^^ help: replace it with: `variable`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/lib/parser/expression.rs:124:17
[INFO] [stderr]     |
[INFO] [stderr] 124 |                 op: op,
[INFO] [stderr]     |                 ^^^^^^ help: replace it with: `op`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lib/parser/statement.rs:61:13
[INFO] [stderr]    |
[INFO] [stderr] 61 |             name: name,
[INFO] [stderr]    |             ^^^^^^^^^^ help: replace it with: `name`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lib/parser/statement.rs:62:13
[INFO] [stderr]    |
[INFO] [stderr] 62 |             value: value,
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `value`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lib/parser/statement.rs:85:13
[INFO] [stderr]    |
[INFO] [stderr] 85 |             name: name,
[INFO] [stderr]    |             ^^^^^^^^^^ help: replace it with: `name`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lib/parser/statement.rs:86:13
[INFO] [stderr]    |
[INFO] [stderr] 86 |             params: params,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^ help: replace it with: `params`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/lib/parser/statement.rs:102:13
[INFO] [stderr]     |
[INFO] [stderr] 102 |             statements: statements,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `statements`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/lib/parser/statement.rs:135:13
[INFO] [stderr]     |
[INFO] [stderr] 135 |             cond: cond,
[INFO] [stderr]     |             ^^^^^^^^^^ help: replace it with: `cond`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lib/parser/mod.rs:28:17
[INFO] [stderr]    |
[INFO] [stderr] 28 |                 statements: statements,
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `statements`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lib/runner/environment.rs:58:13
[INFO] [stderr]    |
[INFO] [stderr] 58 |             parent: parent,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^ help: replace it with: `parent`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lib/tokens.rs:62:13
[INFO] [stderr]    |
[INFO] [stderr] 62 |             token_type: token_type,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `token_type`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lib/tokens.rs:63:13
[INFO] [stderr]    |
[INFO] [stderr] 63 |             line: line,
[INFO] [stderr]    |             ^^^^^^^^^^ help: replace it with: `line`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lib/tokens.rs:64:13
[INFO] [stderr]    |
[INFO] [stderr] 64 |             offset: offset,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^ help: replace it with: `offset`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lib/parser/expression.rs:47:25
[INFO] [stderr]    |
[INFO] [stderr] 47 |                         variable: variable,
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^^^ help: replace it with: `variable`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/lib/parser/expression.rs:124:17
[INFO] [stderr]     |
[INFO] [stderr] 124 |                 op: op,
[INFO] [stderr]     |                 ^^^^^^ help: replace it with: `op`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lib/parser/statement.rs:61:13
[INFO] [stderr]    |
[INFO] [stderr] 61 |             name: name,
[INFO] [stderr]    |             ^^^^^^^^^^ help: replace it with: `name`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lib/parser/statement.rs:62:13
[INFO] [stderr]    |
[INFO] [stderr] 62 |             value: value,
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `value`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lib/parser/statement.rs:85:13
[INFO] [stderr]    |
[INFO] [stderr] 85 |             name: name,
[INFO] [stderr]    |             ^^^^^^^^^^ help: replace it with: `name`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lib/parser/statement.rs:86:13
[INFO] [stderr]    |
[INFO] [stderr] 86 |             params: params,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^ help: replace it with: `params`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/lib/parser/statement.rs:102:13
[INFO] [stderr]     |
[INFO] [stderr] 102 |             statements: statements,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `statements`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/lib/parser/statement.rs:135:13
[INFO] [stderr]     |
[INFO] [stderr] 135 |             cond: cond,
[INFO] [stderr]     |             ^^^^^^^^^^ help: replace it with: `cond`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lib/parser/mod.rs:28:17
[INFO] [stderr]    |
[INFO] [stderr] 28 |                 statements: statements,
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `statements`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lib/runner/environment.rs:58:13
[INFO] [stderr]    |
[INFO] [stderr] 58 |             parent: parent,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^ help: replace it with: `parent`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lib/tokens.rs:62:13
[INFO] [stderr]    |
[INFO] [stderr] 62 |             token_type: token_type,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `token_type`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lib/tokens.rs:63:13
[INFO] [stderr]    |
[INFO] [stderr] 63 |             line: line,
[INFO] [stderr]    |             ^^^^^^^^^^ help: replace it with: `line`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lib/tokens.rs:64:13
[INFO] [stderr]    |
[INFO] [stderr] 64 |             offset: offset,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^ help: replace it with: `offset`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/lib/parser/expression.rs:51:33
[INFO] [stderr]    |
[INFO] [stderr] 51 |                 _ => return Err(format!("Invalid assignment target")),
[INFO] [stderr]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"Invalid assignment target".to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_format)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/lib/parser/expression.rs:171:24
[INFO] [stderr]     |
[INFO] [stderr] 171 |             return Err(format!("Expected a literal. Found EOF"));
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"Expected a literal. Found EOF".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/lib/parser/expression.rs:192:29
[INFO] [stderr]     |
[INFO] [stderr] 192 |             _ => return Err(format!("Unexpected character")),
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"Unexpected character".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: `if _ { .. } else { .. }` is an expression
[INFO] [stderr]   --> src/lib/parser/statement.rs:53:9
[INFO] [stderr]    |
[INFO] [stderr] 53 | /         let mut value = None;
[INFO] [stderr] 54 | |
[INFO] [stderr] 55 | |         if match_next_token!(tokens, EQUAL) {
[INFO] [stderr] 56 | |             value = Some(Expression::parse(tokens)?);
[INFO] [stderr] 57 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_let_if_seq)] on by default
[INFO] [stderr]    = note: you might not need `mut` at all
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_let_if_seq
[INFO] [stderr] help: it is more idiomatic to write
[INFO] [stderr]    |
[INFO] [stderr] 53 |         let <mut> value = if if Some(true) == $iter.peek().map(|i| $( i.token_type == $match )||+ ) {
[INFO] [stderr] 54 |             $iter.next();
[INFO] [stderr] 55 |             true
[INFO] [stderr] 56 |         } else {
[INFO] [stderr] 57 |             false
[INFO] [stderr] 58 |         } { Some(Expression::parse(tokens)?) } else { None };
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/lib/parser/expression.rs:51:33
[INFO] [stderr]    |
[INFO] [stderr] 51 |                 _ => return Err(format!("Invalid assignment target")),
[INFO] [stderr]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"Invalid assignment target".to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_format)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: `if _ { .. } else { .. }` is an expression
[INFO] [stderr]    --> src/lib/parser/statement.rs:114:9
[INFO] [stderr]     |
[INFO] [stderr] 114 | /         let mut else_branch = None;
[INFO] [stderr] 115 | |         if match_next_token!(tokens, ELSE) {
[INFO] [stderr] 116 | |             else_branch = Some(Box::new(Statement::parse(tokens)?));
[INFO] [stderr] 117 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: you might not need `mut` at all
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_let_if_seq
[INFO] [stderr] help: it is more idiomatic to write
[INFO] [stderr]     |
[INFO] [stderr] 114 |         let <mut> else_branch = if if Some(true) == $iter.peek().map(|i| $( i.token_type == $match )||+ ) {
[INFO] [stderr] 115 |             $iter.next();
[INFO] [stderr] 116 |             true
[INFO] [stderr] 117 |         } else {
[INFO] [stderr] 118 |             false
[INFO] [stderr] 119 |         } { Some(Box::new(Statement::parse(tokens)?)) } else { None };
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/lib/parser/utils.rs:18:21
[INFO] [stderr]    |
[INFO] [stderr] 18 |         None => Err(format!("Expected IDENTIFIER, found EOF")),
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"Expected IDENTIFIER, found EOF".to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/lib/parser/mod.rs:24:12
[INFO] [stderr]    |
[INFO] [stderr] 24 |         if errors.len() != 0 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!errors.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: use of `ok_or` followed by a function call
[INFO] [stderr]   --> src/lib/runner/environment.rs:42:14
[INFO] [stderr]    |
[INFO] [stderr] 42 |             .ok_or(format!("Variable '{}' not declared", key))
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `ok_or_else(|| format!("Variable '{}' not declared", key))`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: use of `ok_or` followed by a function call
[INFO] [stderr]   --> src/lib/runner/expression.rs:27:18
[INFO] [stderr]    |
[INFO] [stderr] 27 |                 .ok_or(format!("{} not defined", name)),
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `ok_or_else(|| format!("{} not defined", name))`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: redundant closure found
[INFO] [stderr]   --> src/lib/runner/statement.rs:10:50
[INFO] [stderr]    |
[INFO] [stderr] 10 |                 expression.evaluate(env).map_err(|err| RetErr::Error(err))?;
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove closure as shown: `RetErr::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_closure)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stderr] 
[INFO] [stderr] warning: redundant closure found
[INFO] [stderr]   --> src/lib/runner/statement.rs:14:63
[INFO] [stderr]    |
[INFO] [stderr] 14 |                 let result = expression.evaluate(env).map_err(|err| RetErr::Error(err))?;
[INFO] [stderr]    |                                                               ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove closure as shown: `RetErr::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stderr] 
[INFO] [stderr] warning: passing a unit value to a function
[INFO] [stderr]   --> src/lib/runner/statement.rs:15:20
[INFO] [stderr]    |
[INFO] [stderr] 15 |                 Ok(println!("{}", result))
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unit_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/lib/parser/expression.rs:171:24
[INFO] [stderr]     |
[INFO] [stderr] 171 |             return Err(format!("Expected a literal. Found EOF"));
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"Expected a literal. Found EOF".to_string()`
[INFO] [stderr]     |
[INFO] [stderr] warning: redundant closure found
[INFO] [stderr]   --> src/lib/runner/statement.rs:23:62
[INFO] [stderr]    |
[INFO] [stderr] 23 |                 let value = expression.evaluate(env).map_err(|err| RetErr::Error(err))?;
[INFO] [stderr]    |                                                              ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove closure as shown: `RetErr::Error`
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stderr] 
[INFO] [stderr] warning: redundant closure found
[INFO] [stderr]   --> src/lib/runner/statement.rs:33:66
[INFO] [stderr]    |
[INFO] [stderr] 33 |             Some(expression) => expression.evaluate(env).map_err(|err| RetErr::Error(err))?,
[INFO] [stderr]    |                                                                  ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove closure as shown: `RetErr::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/lib/parser/expression.rs:192:29
[INFO] [stderr]     |
[INFO] [stderr] 192 |             _ => return Err(format!("Unexpected character")),
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"Unexpected character".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: redundant closure found
[INFO] [stderr]   --> src/lib/runner/statement.rs:68:22
[INFO] [stderr]    |
[INFO] [stderr] 68 |             .map_err(|err| RetErr::Error(err))?
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove closure as shown: `RetErr::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stderr] 
[INFO] [stderr] warning: redundant closure found
[INFO] [stderr]   --> src/lib/runner/statement.rs:85:22
[INFO] [stderr]    |
[INFO] [stderr] 85 |             .map_err(|err| RetErr::Error(err))?
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove closure as shown: `RetErr::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/lib/runner/mod.rs:27:46
[INFO] [stderr]    |
[INFO] [stderr] 27 |                 Err(Return(_)) => return Err(format!("Cannot have return outside a function")),
[INFO] [stderr]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"Cannot have return outside a function".to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: this if-then-else expression returns a bool literal
[INFO] [stderr]    --> src/lib/utils.rs:20:9
[INFO] [stderr]     |
[INFO] [stderr] 20  | /         if Some(true) == $iter.peek().map(|&i| $( $func(i) )||+ ) {
[INFO] [stderr] 21  | |             true
[INFO] [stderr] 22  | |         } else {
[INFO] [stderr] 23  | |             false
[INFO] [stderr] 24  | |         }
[INFO] [stderr]     | |_________^ help: you can reduce it to: `Some(true) == $iter.peek().map(|&i| $( $func(i) )||+ )`
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/lib/scanner.rs:129:15
[INFO] [stderr]     |
[INFO] [stderr] 129 |           while check_func!(self.source, is_digit) {
[INFO] [stderr]     |                 ---------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_bool)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_bool
[INFO] [stderr] 
[INFO] [stderr] warning: this if-then-else expression returns a bool literal
[INFO] [stderr]    --> src/lib/utils.rs:20:9
[INFO] [stderr]     |
[INFO] [stderr] 20  | /         if Some(true) == $iter.peek().map(|&i| $( $func(i) )||+ ) {
[INFO] [stderr] 21  | |             true
[INFO] [stderr] 22  | |         } else {
[INFO] [stderr] 23  | |             false
[INFO] [stderr] 24  | |         }
[INFO] [stderr]     | |_________^ help: you can reduce it to: `Some(true) == $iter.peek().map(|&i| $( $func(i) )||+ )`
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/lib/scanner.rs:136:59
[INFO] [stderr]     |
[INFO] [stderr] 136 |           if Some(true) == check_next!(self.source, '.') && check_func!(self.source, is_digit) {
[INFO] [stderr]     |                                                             ---------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_bool
[INFO] [stderr] 
[INFO] [stderr] warning: this if-then-else expression returns a bool literal
[INFO] [stderr]    --> src/lib/utils.rs:20:9
[INFO] [stderr]     |
[INFO] [stderr] 20  | /         if Some(true) == $iter.peek().map(|&i| $( $func(i) )||+ ) {
[INFO] [stderr] 21  | |             true
[INFO] [stderr] 22  | |         } else {
[INFO] [stderr] 23  | |             false
[INFO] [stderr] 24  | |         }
[INFO] [stderr]     | |_________^ help: you can reduce it to: `Some(true) == $iter.peek().map(|&i| $( $func(i) )||+ )`
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/lib/scanner.rs:140:19
[INFO] [stderr]     |
[INFO] [stderr] 140 |               while check_func!(self.source, is_digit) {
[INFO] [stderr]     |                     ---------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_bool
[INFO] [stderr] 
[INFO] [stderr] warning: this if-then-else expression returns a bool literal
[INFO] [stderr]    --> src/lib/utils.rs:20:9
[INFO] [stderr]     |
[INFO] [stderr] 20  | /         if Some(true) == $iter.peek().map(|&i| $( $func(i) )||+ ) {
[INFO] [stderr] 21  | |             true
[INFO] [stderr] 22  | |         } else {
[INFO] [stderr] 23  | |             false
[INFO] [stderr] 24  | |         }
[INFO] [stderr]     | |_________^ help: you can reduce it to: `Some(true) == $iter.peek().map(|&i| $( $func(i) )||+ )`
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/lib/scanner.rs:154:15
[INFO] [stderr]     |
[INFO] [stderr] 154 |           while check_func!(self.source, is_alpha, is_alpha) {
[INFO] [stderr]     |                 -------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_bool
[INFO] [stderr] 
[INFO] [stderr] warning: `if _ { .. } else { .. }` is an expression
[INFO] [stderr]   --> src/lib/parser/statement.rs:53:9
[INFO] [stderr]    |
[INFO] [stderr] 53 | /         let mut value = None;
[INFO] [stderr] 54 | |
[INFO] [stderr] 55 | |         if match_next_token!(tokens, EQUAL) {
[INFO] [stderr] 56 | |             value = Some(Expression::parse(tokens)?);
[INFO] [stderr] 57 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_let_if_seq)] on by default
[INFO] [stderr]    = note: you might not need `mut` at all
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_let_if_seq
[INFO] [stderr] help: it is more idiomatic to write
[INFO] [stderr]    |
[INFO] [stderr] 53 |         let <mut> value = if if Some(true) == $iter.peek().map(|i| $( i.token_type == $match )||+ ) {
[INFO] [stderr] 54 |             $iter.next();
[INFO] [stderr] 55 |             true
[INFO] [stderr] 56 |         } else {
[INFO] [stderr] 57 |             false
[INFO] [stderr] 58 |         } { Some(Expression::parse(tokens)?) } else { None };
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: `if _ { .. } else { .. }` is an expression
[INFO] [stderr]    --> src/lib/parser/statement.rs:114:9
[INFO] [stderr]     |
[INFO] [stderr] 114 | /         let mut else_branch = None;
[INFO] [stderr] 115 | |         if match_next_token!(tokens, ELSE) {
[INFO] [stderr] 116 | |             else_branch = Some(Box::new(Statement::parse(tokens)?));
[INFO] [stderr] 117 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: you might not need `mut` at all
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_let_if_seq
[INFO] [stderr] help: it is more idiomatic to write
[INFO] [stderr]     |
[INFO] [stderr] 114 |         let <mut> else_branch = if if Some(true) == $iter.peek().map(|i| $( i.token_type == $match )||+ ) {
[INFO] [stderr] 115 |             $iter.next();
[INFO] [stderr] 116 |             true
[INFO] [stderr] 117 |         } else {
[INFO] [stderr] 118 |             false
[INFO] [stderr] 119 |         } { Some(Box::new(Statement::parse(tokens)?)) } else { None };
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/lib/mod.rs:26:24
[INFO] [stderr]    |
[INFO] [stderr] 26 |           Ok(program) => match program.run(&mut env) {
[INFO] [stderr]    |  ________________________^
[INFO] [stderr] 27 | |             Err(err) => eprintln!("{}", err),
[INFO] [stderr] 28 | |             _ => (),
[INFO] [stderr] 29 | |         },
[INFO] [stderr]    | |_________^ help: try this: `if let Err(err) = program.run(&mut env) { eprintln!("{}", err) }`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/lib/parser/utils.rs:18:21
[INFO] [stderr]    |
[INFO] [stderr] 18 |         None => Err(format!("Expected IDENTIFIER, found EOF")),
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"Expected IDENTIFIER, found EOF".to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/lib/parser/mod.rs:24:12
[INFO] [stderr]    |
[INFO] [stderr] 24 |         if errors.len() != 0 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!errors.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: use of `ok_or` followed by a function call
[INFO] [stderr]   --> src/lib/runner/environment.rs:42:14
[INFO] [stderr]    |
[INFO] [stderr] 42 |             .ok_or(format!("Variable '{}' not declared", key))
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `ok_or_else(|| format!("Variable '{}' not declared", key))`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: use of `ok_or` followed by a function call
[INFO] [stderr]   --> src/lib/runner/expression.rs:27:18
[INFO] [stderr]    |
[INFO] [stderr] 27 |                 .ok_or(format!("{} not defined", name)),
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `ok_or_else(|| format!("{} not defined", name))`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: redundant closure found
[INFO] [stderr]   --> src/lib/runner/statement.rs:10:50
[INFO] [stderr]    |
[INFO] [stderr] 10 |                 expression.evaluate(env).map_err(|err| RetErr::Error(err))?;
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove closure as shown: `RetErr::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_closure)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stderr] 
[INFO] [stderr] warning: redundant closure found
[INFO] [stderr]   --> src/lib/runner/statement.rs:14:63
[INFO] [stderr]    |
[INFO] [stderr] 14 |                 let result = expression.evaluate(env).map_err(|err| RetErr::Error(err))?;
[INFO] [stderr]    |                                                               ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove closure as shown: `RetErr::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stderr] 
[INFO] [stderr] warning: passing a unit value to a function
[INFO] [stderr]   --> src/lib/runner/statement.rs:15:20
[INFO] [stderr]    |
[INFO] [stderr] 15 |                 Ok(println!("{}", result))
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unit_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: redundant closure found
[INFO] [stderr]   --> src/lib/runner/statement.rs:23:62
[INFO] [stderr]    |
[INFO] [stderr] 23 |                 let value = expression.evaluate(env).map_err(|err| RetErr::Error(err))?;
[INFO] [stderr]    |                                                              ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove closure as shown: `RetErr::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stderr] 
[INFO] [stderr] warning: redundant closure found
[INFO] [stderr]   --> src/lib/runner/statement.rs:33:66
[INFO] [stderr]    |
[INFO] [stderr] 33 |             Some(expression) => expression.evaluate(env).map_err(|err| RetErr::Error(err))?,
[INFO] [stderr]    |                                                                  ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove closure as shown: `RetErr::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stderr] 
[INFO] [stderr] warning: redundant closure found
[INFO] [stderr]   --> src/lib/runner/statement.rs:68:22
[INFO] [stderr]    |
[INFO] [stderr] 68 |             .map_err(|err| RetErr::Error(err))?
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove closure as shown: `RetErr::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stderr] 
[INFO] [stderr] warning: redundant closure found
[INFO] [stderr]   --> src/lib/runner/statement.rs:85:22
[INFO] [stderr]    |
[INFO] [stderr] 85 |             .map_err(|err| RetErr::Error(err))?
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove closure as shown: `RetErr::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/lib/runner/mod.rs:27:46
[INFO] [stderr]    |
[INFO] [stderr] 27 |                 Err(Return(_)) => return Err(format!("Cannot have return outside a function")),
[INFO] [stderr]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"Cannot have return outside a function".to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: this if-then-else expression returns a bool literal
[INFO] [stderr]    --> src/lib/utils.rs:20:9
[INFO] [stderr]     |
[INFO] [stderr] 20  | /         if Some(true) == $iter.peek().map(|&i| $( $func(i) )||+ ) {
[INFO] [stderr] 21  | |             true
[INFO] [stderr] 22  | |         } else {
[INFO] [stderr] 23  | |             false
[INFO] [stderr] 24  | |         }
[INFO] [stderr]     | |_________^ help: you can reduce it to: `Some(true) == $iter.peek().map(|&i| $( $func(i) )||+ )`
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/lib/scanner.rs:129:15
[INFO] [stderr]     |
[INFO] [stderr] 129 |           while check_func!(self.source, is_digit) {
[INFO] [stderr]     |                 ---------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_bool)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_bool
[INFO] [stderr] 
[INFO] [stderr] warning: this if-then-else expression returns a bool literal
[INFO] [stderr]    --> src/lib/utils.rs:20:9
[INFO] [stderr]     |
[INFO] [stderr] 20  | /         if Some(true) == $iter.peek().map(|&i| $( $func(i) )||+ ) {
[INFO] [stderr] 21  | |             true
[INFO] [stderr] 22  | |         } else {
[INFO] [stderr] 23  | |             false
[INFO] [stderr] 24  | |         }
[INFO] [stderr]     | |_________^ help: you can reduce it to: `Some(true) == $iter.peek().map(|&i| $( $func(i) )||+ )`
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/lib/scanner.rs:136:59
[INFO] [stderr]     |
[INFO] [stderr] 136 |           if Some(true) == check_next!(self.source, '.') && check_func!(self.source, is_digit) {
[INFO] [stderr]     |                                                             ---------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_bool
[INFO] [stderr] 
[INFO] [stderr] warning: this if-then-else expression returns a bool literal
[INFO] [stderr]    --> src/lib/utils.rs:20:9
[INFO] [stderr]     |
[INFO] [stderr] 20  | /         if Some(true) == $iter.peek().map(|&i| $( $func(i) )||+ ) {
[INFO] [stderr] 21  | |             true
[INFO] [stderr] 22  | |         } else {
[INFO] [stderr] 23  | |             false
[INFO] [stderr] 24  | |         }
[INFO] [stderr]     | |_________^ help: you can reduce it to: `Some(true) == $iter.peek().map(|&i| $( $func(i) )||+ )`
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/lib/scanner.rs:140:19
[INFO] [stderr]     |
[INFO] [stderr] 140 |               while check_func!(self.source, is_digit) {
[INFO] [stderr]     |                     ---------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_bool
[INFO] [stderr] 
[INFO] [stderr] warning: this if-then-else expression returns a bool literal
[INFO] [stderr]    --> src/lib/utils.rs:20:9
[INFO] [stderr]     |
[INFO] [stderr] 20  | /         if Some(true) == $iter.peek().map(|&i| $( $func(i) )||+ ) {
[INFO] [stderr] 21  | |             true
[INFO] [stderr] 22  | |         } else {
[INFO] [stderr] 23  | |             false
[INFO] [stderr] 24  | |         }
[INFO] [stderr]     | |_________^ help: you can reduce it to: `Some(true) == $iter.peek().map(|&i| $( $func(i) )||+ )`
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/lib/scanner.rs:154:15
[INFO] [stderr]     |
[INFO] [stderr] 154 |           while check_func!(self.source, is_alpha, is_alpha) {
[INFO] [stderr]     |                 -------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_bool
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/lib/mod.rs:26:24
[INFO] [stderr]    |
[INFO] [stderr] 26 |           Ok(program) => match program.run(&mut env) {
[INFO] [stderr]    |  ________________________^
[INFO] [stderr] 27 | |             Err(err) => eprintln!("{}", err),
[INFO] [stderr] 28 | |             _ => (),
[INFO] [stderr] 29 | |         },
[INFO] [stderr]    | |_________^ help: try this: `if let Err(err) = program.run(&mut env) { eprintln!("{}", err) }`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.48s
[INFO] running `"docker" "inspect" "32503cd12fb64eff17b6131ae19d6dd8044c50e006ef672b4654b9fa39216854"`
[INFO] running `"docker" "rm" "-f" "32503cd12fb64eff17b6131ae19d6dd8044c50e006ef672b4654b9fa39216854"`
[INFO] [stdout] 32503cd12fb64eff17b6131ae19d6dd8044c50e006ef672b4654b9fa39216854