[INFO] crate rcalc 0.1.2 is already in cache
[INFO] extracting crate rcalc 0.1.2 into work/ex/clippy-test-run/sources/stable/reg/rcalc/0.1.2
[INFO] extracting crate rcalc 0.1.2 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/rcalc/0.1.2
[INFO] validating manifest of rcalc-0.1.2 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 rcalc-0.1.2 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 rcalc-0.1.2
[INFO] finished frobbing rcalc-0.1.2
[INFO] frobbed toml for rcalc-0.1.2 written to work/ex/clippy-test-run/sources/stable/reg/rcalc/0.1.2/Cargo.toml
[INFO] started frobbing rcalc-0.1.2
[INFO] finished frobbing rcalc-0.1.2
[INFO] frobbed toml for rcalc-0.1.2 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/rcalc/0.1.2/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting rcalc-0.1.2 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-2/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/rcalc/0.1.2:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 612b7805130bfeb6ed83688e0ce99db4d8db7a54ae7db93b01aaaccfc36442d3
[INFO] running `"docker" "start" "-a" "612b7805130bfeb6ed83688e0ce99db4d8db7a54ae7db93b01aaaccfc36442d3"`
[INFO] [stderr] warning: `panic` setting is ignored for `test` profile
[INFO] [stderr] warning: profile `doc` is deprecated and has no effect
[INFO] [stderr] warning: `panic` setting is ignored for `bench` profile
[INFO] [stderr]    Compiling libc v0.2.48
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]     Checking encode_unicode v0.1.3
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]     Checking rustyline v1.0.0
[INFO] [stderr]     Checking rcalc v0.1.2 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/rcalc/ast.rs:34:13
[INFO] [stderr]    |
[INFO] [stderr] 34 |             token: token,
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `token`
[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/rcalc/ast.rs:35:13
[INFO] [stderr]    |
[INFO] [stderr] 35 |             children: children,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `children`
[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/rcalc/parser/parser.rs:75:13
[INFO] [stderr]    |
[INFO] [stderr] 75 |             lexer: lexer,
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `lexer`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/rcalc/ast.rs:34:13
[INFO] [stderr]    |
[INFO] [stderr] 34 |             token: token,
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `token`
[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/rcalc/ast.rs:35:13
[INFO] [stderr]    |
[INFO] [stderr] 35 |             children: children,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `children`
[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/rcalc/parser/parser.rs:75:13
[INFO] [stderr]    |
[INFO] [stderr] 75 |             lexer: lexer,
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `lexer`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/rcalc/ast.rs:34:13
[INFO] [stderr]    |
[INFO] [stderr] 34 |             token: token,
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `token`
[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/rcalc/ast.rs:35:13
[INFO] [stderr]    |
[INFO] [stderr] 35 |             children: children,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `children`
[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/rcalc/parser/parser.rs:75:13
[INFO] [stderr]    |
[INFO] [stderr] 75 |             lexer: lexer,
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `lexer`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]  --> src/rcalc/interpreter/mod.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | mod interpreter;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::module_inception)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/rcalc/interpreter/interpreter.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 | /         return match self.visit(&tree) {
[INFO] [stderr] 25 | |             Ok(n) => Ok(n),
[INFO] [stderr] 26 | |             Err(e) => Err(e),
[INFO] [stderr] 27 | |         };
[INFO] [stderr]    | |__________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 24 |         match self.visit(&tree) {
[INFO] [stderr] 25 |             Ok(n) => Ok(n),
[INFO] [stderr] 26 |             Err(e) => Err(e),
[INFO] [stderr] 27 |         }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]  --> src/rcalc/parser/mod.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | mod parser;
[INFO] [stderr]   | ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/rcalc/parser/builder.rs:59:33
[INFO] [stderr]    |
[INFO] [stderr] 59 |             Token::NUMBER(_) => return Ok(ASTNode::from(token, vec![])),
[INFO] [stderr]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(ASTNode::from(token, vec![]))`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/rcalc/parser/builder.rs:65:17
[INFO] [stderr]    |
[INFO] [stderr] 65 |                 return Ok(ASTNode::from(token, vec![n]));
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(ASTNode::from(token, vec![n]))`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/rcalc/parser/builder.rs:72:17
[INFO] [stderr]    |
[INFO] [stderr] 72 |                 return Ok(ASTNode::from(token, vec![n]));
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(ASTNode::from(token, vec![n]))`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/rcalc/parser/builder.rs:77:30
[INFO] [stderr]    |
[INFO] [stderr] 77 |                     Ok(_) => return node,
[INFO] [stderr]    |                              ^^^^^^^^^^^ help: remove `return` as shown: `node`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/rcalc/parser/builder.rs:78:31
[INFO] [stderr]    |
[INFO] [stderr] 78 |                     Err(e) => return Err(e),
[INFO] [stderr]    |                               ^^^^^^^^^^^^^ help: remove `return` as shown: `Err(e)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/rcalc/parser/builder.rs:82:17
[INFO] [stderr]    |
[INFO] [stderr] 82 | /                 return Err(ProgramError::of(
[INFO] [stderr] 83 | |                     "UnknownToken",
[INFO] [stderr] 84 | |                     "High-level Token cannot be parsed.",
[INFO] [stderr] 85 | |                 ))
[INFO] [stderr]    | |__________________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 82 |                 Err(ProgramError::of(
[INFO] [stderr] 83 |                     "UnknownToken",
[INFO] [stderr] 84 |                     "High-level Token cannot be parsed.",
[INFO] [stderr] 85 |                 ))
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]  --> src/rcalc/interpreter/mod.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | mod interpreter;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::module_inception)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/rcalc/interpreter/interpreter.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 | /         return match self.visit(&tree) {
[INFO] [stderr] 25 | |             Ok(n) => Ok(n),
[INFO] [stderr] 26 | |             Err(e) => Err(e),
[INFO] [stderr] 27 | |         };
[INFO] [stderr]    | |__________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 24 |         match self.visit(&tree) {
[INFO] [stderr] 25 |             Ok(n) => Ok(n),
[INFO] [stderr] 26 |             Err(e) => Err(e),
[INFO] [stderr] 27 |         }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]  --> src/rcalc/parser/mod.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | mod parser;
[INFO] [stderr]   | ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/rcalc/parser/builder.rs:59:33
[INFO] [stderr]    |
[INFO] [stderr] 59 |             Token::NUMBER(_) => return Ok(ASTNode::from(token, vec![])),
[INFO] [stderr]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(ASTNode::from(token, vec![]))`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/rcalc/parser/builder.rs:65:17
[INFO] [stderr]    |
[INFO] [stderr] 65 |                 return Ok(ASTNode::from(token, vec![n]));
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(ASTNode::from(token, vec![n]))`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/rcalc/parser/builder.rs:72:17
[INFO] [stderr]    |
[INFO] [stderr] 72 |                 return Ok(ASTNode::from(token, vec![n]));
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(ASTNode::from(token, vec![n]))`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/rcalc/parser/builder.rs:77:30
[INFO] [stderr]    |
[INFO] [stderr] 77 |                     Ok(_) => return node,
[INFO] [stderr]    |                              ^^^^^^^^^^^ help: remove `return` as shown: `node`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/rcalc/parser/builder.rs:78:31
[INFO] [stderr]    |
[INFO] [stderr] 78 |                     Err(e) => return Err(e),
[INFO] [stderr]    |                               ^^^^^^^^^^^^^ help: remove `return` as shown: `Err(e)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/rcalc/parser/builder.rs:82:17
[INFO] [stderr]    |
[INFO] [stderr] 82 | /                 return Err(ProgramError::of(
[INFO] [stderr] 83 | |                     "UnknownToken",
[INFO] [stderr] 84 | |                     "High-level Token cannot be parsed.",
[INFO] [stderr] 85 | |                 ))
[INFO] [stderr]    | |__________________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 82 |                 Err(ProgramError::of(
[INFO] [stderr] 83 |                     "UnknownToken",
[INFO] [stderr] 84 |                     "High-level Token cannot be parsed.",
[INFO] [stderr] 85 |                 ))
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/rcalc/interpreter/visitor.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 | /         match node.token() {
[INFO] [stderr] 15 | |             &Token::NUMBER(_) => Ok(self.visit_number(node).unwrap()),
[INFO] [stderr] 16 | |             &Token::MULTIPLY |
[INFO] [stderr] 17 | |             &Token::DIVIDE |
[INFO] [stderr] ...  |
[INFO] [stderr] 32 | |             )),
[INFO] [stderr] 33 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::match_ref_pats)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 14 |         match *node.token() {
[INFO] [stderr] 15 |             Token::NUMBER(_) => Ok(self.visit_number(node).unwrap()),
[INFO] [stderr] 16 |             Token::MULTIPLY |
[INFO] [stderr] 17 |             Token::DIVIDE |
[INFO] [stderr] 18 |             Token::DIVIDEINT |
[INFO] [stderr] 19 |             Token::MODULO |
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: needlessly taken reference of both operands
[INFO] [stderr]   --> src/rcalc/interpreter/visitor.rs:23:20
[INFO] [stderr]    |
[INFO] [stderr] 23 |                 if &node.children().len() == &2 {
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::op_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] help: use the values directly
[INFO] [stderr]    |
[INFO] [stderr] 23 |                 if node.children().len() == 2 {
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^    ^
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/rcalc/interpreter/visitor.rs:39:9
[INFO] [stderr]    |
[INFO] [stderr] 39 | /         match node.token() {
[INFO] [stderr] 40 | |             &Token::NUMBER(i) => Ok(i as f64),
[INFO] [stderr] 41 | |             _ => Err(ProgramError::of(
[INFO] [stderr] 42 | |                 "NotANumber",
[INFO] [stderr] 43 | |                 "Expected Token of type Number; got unexpected result.",
[INFO] [stderr] 44 | |             )),
[INFO] [stderr] 45 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 39 |         match *node.token() {
[INFO] [stderr] 40 |             Token::NUMBER(i) => Ok(i as f64),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/rcalc/interpreter/visitor.rs:52:9
[INFO] [stderr]    |
[INFO] [stderr] 52 | /         match node.token() {
[INFO] [stderr] 53 | |             &Token::PLUS => Ok((left + right) as f64),
[INFO] [stderr] 54 | |             &Token::MINUS => Ok((left - right) as f64),
[INFO] [stderr] 55 | |             &Token::MULTIPLY => Ok((left * right) as f64),
[INFO] [stderr] ...  |
[INFO] [stderr] 63 | |             )),
[INFO] [stderr] 64 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 52 |         match *node.token() {
[INFO] [stderr] 53 |             Token::PLUS => Ok((left + right) as f64),
[INFO] [stderr] 54 |             Token::MINUS => Ok((left - right) as f64),
[INFO] [stderr] 55 |             Token::MULTIPLY => Ok((left * right) as f64),
[INFO] [stderr] 56 |             Token::DIVIDE => Ok(left as f64 / right as f64),
[INFO] [stderr] 57 |             Token::DIVIDEINT => Ok((left as isize / right as isize) as f64),
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/rcalc/interpreter/visitor.rs:70:9
[INFO] [stderr]    |
[INFO] [stderr] 70 | /         match node.token() {
[INFO] [stderr] 71 | |             &Token::PLUS => Ok(expr as f64),
[INFO] [stderr] 72 | |             &Token::MINUS => Ok(-expr as f64),
[INFO] [stderr] 73 | |             &Token::FACTORIAL => {
[INFO] [stderr] ...  |
[INFO] [stderr] 91 | |             )),
[INFO] [stderr] 92 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 70 |         match *node.token() {
[INFO] [stderr] 71 |             Token::PLUS => Ok(expr as f64),
[INFO] [stderr] 72 |             Token::MINUS => Ok(-expr as f64),
[INFO] [stderr] 73 |             Token::FACTORIAL => {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: this `.fold` can be written more succinctly using another method
[INFO] [stderr]   --> src/rcalc/interpreter/visitor.rs:75:35
[INFO] [stderr]    |
[INFO] [stderr] 75 |                     (1..(val + 1)).fold(1, |acc, value| acc * value)
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `.product()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unnecessary_fold)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_fold
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]   --> src/rcalc/interpreter/visitor.rs:75:21
[INFO] [stderr]    |
[INFO] [stderr] 75 |                     (1..(val + 1)).fold(1, |acc, value| acc * value)
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^ help: use: `(1..=val)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/rcalc/lexer.rs:61:31
[INFO] [stderr]    |
[INFO] [stderr] 61 |     fn peek_ahead(&self, amt: &usize) -> String {
[INFO] [stderr]    |                               ^^^^^^ help: consider passing by value instead: `usize`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/rcalc/interpreter/visitor.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 | /         match node.token() {
[INFO] [stderr] 15 | |             &Token::NUMBER(_) => Ok(self.visit_number(node).unwrap()),
[INFO] [stderr] 16 | |             &Token::MULTIPLY |
[INFO] [stderr] 17 | |             &Token::DIVIDE |
[INFO] [stderr] ...  |
[INFO] [stderr] 32 | |             )),
[INFO] [stderr] 33 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::match_ref_pats)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 14 |         match *node.token() {
[INFO] [stderr] 15 |             Token::NUMBER(_) => Ok(self.visit_number(node).unwrap()),
[INFO] [stderr] 16 |             Token::MULTIPLY |
[INFO] [stderr] 17 |             Token::DIVIDE |
[INFO] [stderr] 18 |             Token::DIVIDEINT |
[INFO] [stderr] 19 |             Token::MODULO |
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: needlessly taken reference of both operands
[INFO] [stderr]   --> src/rcalc/interpreter/visitor.rs:23:20
[INFO] [stderr]    |
[INFO] [stderr] 23 |                 if &node.children().len() == &2 {
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::op_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] help: use the values directly
[INFO] [stderr]    |
[INFO] [stderr] 23 |                 if node.children().len() == 2 {
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^    ^
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/rcalc/interpreter/visitor.rs:39:9
[INFO] [stderr]    |
[INFO] [stderr] 39 | /         match node.token() {
[INFO] [stderr] 40 | |             &Token::NUMBER(i) => Ok(i as f64),
[INFO] [stderr] 41 | |             _ => Err(ProgramError::of(
[INFO] [stderr] 42 | |                 "NotANumber",
[INFO] [stderr] 43 | |                 "Expected Token of type Number; got unexpected result.",
[INFO] [stderr] 44 | |             )),
[INFO] [stderr] 45 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]  --> src/rcalc/interpreter/mod.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | mod interpreter;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::module_inception)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/rcalc/interpreter/interpreter.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 | /         return match self.visit(&tree) {
[INFO] [stderr] 25 | |             Ok(n) => Ok(n),
[INFO] [stderr] 26 | |             Err(e) => Err(e),
[INFO] [stderr] 27 | |         };
[INFO] [stderr]    | |__________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 24 |         match self.visit(&tree) {
[INFO] [stderr] 25 |             Ok(n) => Ok(n),
[INFO] [stderr] 26 |             Err(e) => Err(e),
[INFO] [stderr] 27 |         }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]  --> src/rcalc/parser/mod.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | mod parser;
[INFO] [stderr]   | ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/rcalc/parser/builder.rs:59:33
[INFO] [stderr]    |
[INFO] [stderr] 59 |             Token::NUMBER(_) => return Ok(ASTNode::from(token, vec![])),
[INFO] [stderr]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(ASTNode::from(token, vec![]))`
[INFO] [stderr]    |
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 39 |         match *node.token() {
[INFO] [stderr] 40 |             Token::NUMBER(i) => Ok(i as f64),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/rcalc/parser/builder.rs:65:17
[INFO] [stderr]    |
[INFO] [stderr] 65 |                 return Ok(ASTNode::from(token, vec![n]));
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(ASTNode::from(token, vec![n]))`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/rcalc/interpreter/visitor.rs:52:9
[INFO] [stderr]    |
[INFO] [stderr] 52 | /         match node.token() {
[INFO] [stderr] 53 | |             &Token::PLUS => Ok((left + right) as f64),
[INFO] [stderr] 54 | |             &Token::MINUS => Ok((left - right) as f64),
[INFO] [stderr] 55 | |             &Token::MULTIPLY => Ok((left * right) as f64),
[INFO] [stderr] ...  |
[INFO] [stderr] 63 | |             )),
[INFO] [stderr] 64 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 52 |         match *node.token() {
[INFO] [stderr] 53 |             Token::PLUS => Ok((left + right) as f64),
[INFO] [stderr] 54 |             Token::MINUS => Ok((left - right) as f64),
[INFO] [stderr] 55 |             Token::MULTIPLY => Ok((left * right) as f64),
[INFO] [stderr] 56 |             Token::DIVIDE => Ok(left as f64 / right as f64),
[INFO] [stderr] 57 |             Token::DIVIDEINT => Ok((left as isize / right as isize) as f64),
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/rcalc/interpreter/visitor.rs:70:9
[INFO] [stderr]    |
[INFO] [stderr] 70 | /         match node.token() {
[INFO] [stderr] 71 | |             &Token::PLUS => Ok(expr as f64),
[INFO] [stderr] 72 | |             &Token::MINUS => Ok(-expr as f64),
[INFO] [stderr] 73 | |             &Token::FACTORIAL => {
[INFO] [stderr] ...  |
[INFO] [stderr] 91 | |             )),
[INFO] [stderr] 92 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/rcalc/parser/builder.rs:72:17
[INFO] [stderr]    |
[INFO] [stderr] 72 |                 return Ok(ASTNode::from(token, vec![n]));
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(ASTNode::from(token, vec![n]))`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 70 |         match *node.token() {
[INFO] [stderr] 71 |             Token::PLUS => Ok(expr as f64),
[INFO] [stderr] 72 |             Token::MINUS => Ok(-expr as f64),
[INFO] [stderr] 73 |             Token::FACTORIAL => {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/rcalc/parser/builder.rs:77:30
[INFO] [stderr]    |
[INFO] [stderr] 77 |                     Ok(_) => return node,
[INFO] [stderr]    |                              ^^^^^^^^^^^ help: remove `return` as shown: `node`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/rcalc/parser/builder.rs:78:31
[INFO] [stderr]    |
[INFO] [stderr] 78 |                     Err(e) => return Err(e),
[INFO] [stderr]    |                               ^^^^^^^^^^^^^ help: remove `return` as shown: `Err(e)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/rcalc/parser/builder.rs:82:17
[INFO] [stderr]    |
[INFO] [stderr] 82 | /                 return Err(ProgramError::of(
[INFO] [stderr] 83 | |                     "UnknownToken",
[INFO] [stderr] 84 | |                     "High-level Token cannot be parsed.",
[INFO] [stderr] 85 | |                 ))
[INFO] [stderr]    | |__________________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 82 |                 Err(ProgramError::of(
[INFO] [stderr] 83 |                     "UnknownToken",
[INFO] [stderr] 84 |                     "High-level Token cannot be parsed.",
[INFO] [stderr] 85 |                 ))
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: this `.fold` can be written more succinctly using another method
[INFO] [stderr]   --> src/rcalc/interpreter/visitor.rs:75:35
[INFO] [stderr]    |
[INFO] [stderr] 75 |                     (1..(val + 1)).fold(1, |acc, value| acc * value)
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `.product()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unnecessary_fold)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_fold
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]   --> src/rcalc/interpreter/visitor.rs:75:21
[INFO] [stderr]    |
[INFO] [stderr] 75 |                     (1..(val + 1)).fold(1, |acc, value| acc * value)
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^ help: use: `(1..=val)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/rcalc/lexer.rs:61:31
[INFO] [stderr]    |
[INFO] [stderr] 61 |     fn peek_ahead(&self, amt: &usize) -> String {
[INFO] [stderr]    |                               ^^^^^^ help: consider passing by value instead: `usize`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/rcalc/interpreter/visitor.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 | /         match node.token() {
[INFO] [stderr] 15 | |             &Token::NUMBER(_) => Ok(self.visit_number(node).unwrap()),
[INFO] [stderr] 16 | |             &Token::MULTIPLY |
[INFO] [stderr] 17 | |             &Token::DIVIDE |
[INFO] [stderr] ...  |
[INFO] [stderr] 32 | |             )),
[INFO] [stderr] 33 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::match_ref_pats)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 14 |         match *node.token() {
[INFO] [stderr] 15 |             Token::NUMBER(_) => Ok(self.visit_number(node).unwrap()),
[INFO] [stderr] 16 |             Token::MULTIPLY |
[INFO] [stderr] 17 |             Token::DIVIDE |
[INFO] [stderr] 18 |             Token::DIVIDEINT |
[INFO] [stderr] 19 |             Token::MODULO |
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: needlessly taken reference of both operands
[INFO] [stderr]   --> src/rcalc/interpreter/visitor.rs:23:20
[INFO] [stderr]    |
[INFO] [stderr] 23 |                 if &node.children().len() == &2 {
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::op_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] help: use the values directly
[INFO] [stderr]    |
[INFO] [stderr] 23 |                 if node.children().len() == 2 {
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^    ^
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/rcalc/interpreter/visitor.rs:39:9
[INFO] [stderr]    |
[INFO] [stderr] 39 | /         match node.token() {
[INFO] [stderr] 40 | |             &Token::NUMBER(i) => Ok(i as f64),
[INFO] [stderr] 41 | |             _ => Err(ProgramError::of(
[INFO] [stderr] 42 | |                 "NotANumber",
[INFO] [stderr] 43 | |                 "Expected Token of type Number; got unexpected result.",
[INFO] [stderr] 44 | |             )),
[INFO] [stderr] 45 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 39 |         match *node.token() {
[INFO] [stderr] 40 |             Token::NUMBER(i) => Ok(i as f64),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/rcalc/interpreter/visitor.rs:52:9
[INFO] [stderr]    |
[INFO] [stderr] 52 | /         match node.token() {
[INFO] [stderr] 53 | |             &Token::PLUS => Ok((left + right) as f64),
[INFO] [stderr] 54 | |             &Token::MINUS => Ok((left - right) as f64),
[INFO] [stderr] 55 | |             &Token::MULTIPLY => Ok((left * right) as f64),
[INFO] [stderr] ...  |
[INFO] [stderr] 63 | |             )),
[INFO] [stderr] 64 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 52 |         match *node.token() {
[INFO] [stderr] 53 |             Token::PLUS => Ok((left + right) as f64),
[INFO] [stderr] 54 |             Token::MINUS => Ok((left - right) as f64),
[INFO] [stderr] 55 |             Token::MULTIPLY => Ok((left * right) as f64),
[INFO] [stderr] 56 |             Token::DIVIDE => Ok(left as f64 / right as f64),
[INFO] [stderr] 57 |             Token::DIVIDEINT => Ok((left as isize / right as isize) as f64),
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/rcalc/interpreter/visitor.rs:70:9
[INFO] [stderr]    |
[INFO] [stderr] 70 | /         match node.token() {
[INFO] [stderr] 71 | |             &Token::PLUS => Ok(expr as f64),
[INFO] [stderr] 72 | |             &Token::MINUS => Ok(-expr as f64),
[INFO] [stderr] 73 | |             &Token::FACTORIAL => {
[INFO] [stderr] ...  |
[INFO] [stderr] 91 | |             )),
[INFO] [stderr] 92 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 70 |         match *node.token() {
[INFO] [stderr] 71 |             Token::PLUS => Ok(expr as f64),
[INFO] [stderr] 72 |             Token::MINUS => Ok(-expr as f64),
[INFO] [stderr] 73 |             Token::FACTORIAL => {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: this `.fold` can be written more succinctly using another method
[INFO] [stderr]   --> src/rcalc/interpreter/visitor.rs:75:35
[INFO] [stderr]    |
[INFO] [stderr] 75 |                     (1..(val + 1)).fold(1, |acc, value| acc * value)
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `.product()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unnecessary_fold)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_fold
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]   --> src/rcalc/interpreter/visitor.rs:75:21
[INFO] [stderr]    |
[INFO] [stderr] 75 |                     (1..(val + 1)).fold(1, |acc, value| acc * value)
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^ help: use: `(1..=val)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/rcalc/lexer.rs:61:31
[INFO] [stderr]    |
[INFO] [stderr] 61 |     fn peek_ahead(&self, amt: &usize) -> String {
[INFO] [stderr]    |                               ^^^^^^ help: consider passing by value instead: `usize`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] error: strict comparison of f32 or f64
[INFO] [stderr]  --> tests/precedence.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |         assert_eq!(Interpreter::process("7 + 3 * 2 - 4 / 2").unwrap(), 11.);
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[deny(clippy::float_cmp)] on by default
[INFO] [stderr] note: std::f32::EPSILON and std::f64::EPSILON are available.
[INFO] [stderr]  --> tests/precedence.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |         assert_eq!(Interpreter::process("7 + 3 * 2 - 4 / 2").unwrap(), 11.);
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#float_cmp
[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] error: strict comparison of f32 or f64
[INFO] [stderr]   --> tests/precedence.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |         assert_eq!(Interpreter::process("6 ^ 2 / 6").unwrap(), 6.)
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: std::f32::EPSILON and std::f64::EPSILON are available.
[INFO] [stderr]   --> tests/precedence.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |         assert_eq!(Interpreter::process("6 ^ 2 / 6").unwrap(), 6.)
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#float_cmp
[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] error: strict comparison of f32 or f64
[INFO] [stderr]   --> tests/precedence.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |         assert_eq!(Interpreter::process("6 ^ 9 / 3! ^ 3").unwrap(), 46656.)
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: std::f32::EPSILON and std::f64::EPSILON are available.
[INFO] [stderr]   --> tests/precedence.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |         assert_eq!(Interpreter::process("6 ^ 9 / 3! ^ 3").unwrap(), 46656.)
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#float_cmp
[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] error: strict comparison of f32 or f64
[INFO] [stderr]   --> tests/precedence.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 | /         assert_eq!(
[INFO] [stderr] 25 | |             Interpreter::process("7 + 3 * (10 / (12 / (3 + 1) - 1)) / (2 + 3) - 5 - 3 + (8)")
[INFO] [stderr] 26 | |                 .unwrap(),
[INFO] [stderr] 27 | |             10.
[INFO] [stderr] 28 | |         );
[INFO] [stderr]    | |__________^
[INFO] [stderr]    |
[INFO] [stderr] note: std::f32::EPSILON and std::f64::EPSILON are available.
[INFO] [stderr]   --> tests/precedence.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 | /         assert_eq!(
[INFO] [stderr] 25 | |             Interpreter::process("7 + 3 * (10 / (12 / (3 + 1) - 1)) / (2 + 3) - 5 - 3 + (8)")
[INFO] [stderr] 26 | |                 .unwrap(),
[INFO] [stderr] 27 | |             10.
[INFO] [stderr] 28 | |         );
[INFO] [stderr]    | |__________^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#float_cmp
[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] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rcalc`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: strict comparison of f32 or f64
[INFO] [stderr]  --> tests/operators.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |         assert_eq!(Interpreter::process("3+4").unwrap(), 7.);
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[deny(clippy::float_cmp)] on by default
[INFO] [stderr] note: std::f32::EPSILON and std::f64::EPSILON are available.
[INFO] [stderr]  --> tests/operators.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |         assert_eq!(Interpreter::process("3+4").unwrap(), 7.);
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#float_cmp
[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] error: strict comparison of f32 or f64
[INFO] [stderr]   --> tests/operators.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |         assert_eq!(Interpreter::process("3-4").unwrap(), -1.);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: std::f32::EPSILON and std::f64::EPSILON are available.
[INFO] [stderr]   --> tests/operators.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |         assert_eq!(Interpreter::process("3-4").unwrap(), -1.);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] error: strict comparison of f32 or f64
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#float_cmp
[INFO] [stderr]  --> tests/gen.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |         assert_eq!(Interpreter::process("3   -   4").unwrap(), -1.);
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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]   |
[INFO] [stderr]   = note: #[deny(clippy::float_cmp)] on by default
[INFO] [stderr] note: std::f32::EPSILON and std::f64::EPSILON are available.
[INFO] [stderr]  --> tests/gen.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |         assert_eq!(Interpreter::process("3   -   4").unwrap(), -1.);
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#float_cmp
[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] error: strict comparison of f32 or f64
[INFO] [stderr]   --> tests/operators.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |         assert_eq!(Interpreter::process("3*4").unwrap(), 12.);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: std::f32::EPSILON and std::f64::EPSILON are available.
[INFO] [stderr]   --> tests/operators.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |         assert_eq!(Interpreter::process("3*4").unwrap(), 12.);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#float_cmp
[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] error: strict comparison of f32 or f64
[INFO] [stderr]   --> tests/gen.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |         assert_eq!(Interpreter::process("22 * 55").unwrap(), 1210.);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: std::f32::EPSILON and std::f64::EPSILON are available.
[INFO] [stderr]   --> tests/gen.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |         assert_eq!(Interpreter::process("22 * 55").unwrap(), 1210.);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#float_cmp
[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] error: strict comparison of f32 or f64
[INFO] [stderr]   --> tests/operators.rs:27:13
[INFO] [stderr]    |
[INFO] [stderr] 27 |             assert_eq!(Interpreter::process("3/4").unwrap(), 0.75);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: std::f32::EPSILON and std::f64::EPSILON are available.
[INFO] [stderr]   --> tests/operators.rs:27:13
[INFO] [stderr]    |
[INFO] [stderr] 27 |             assert_eq!(Interpreter::process("3/4").unwrap(), 0.75);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#float_cmp
[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] error: strict comparison of f32 or f64
[INFO] [stderr]   --> tests/gen.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |         assert_eq!(Interpreter::process("3 + 4 - 5 + 7").unwrap(), 9.);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: std::f32::EPSILON and std::f64::EPSILON are available.
[INFO] [stderr]   --> tests/gen.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |         assert_eq!(Interpreter::process("3 + 4 - 5 + 7").unwrap(), 9.);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#float_cmp
[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] error: strict comparison of f32 or f64
[INFO] [stderr]   --> tests/operators.rs:32:13
[INFO] [stderr]    |
[INFO] [stderr] 32 |             assert_eq!(Interpreter::process("3./4").unwrap(), 0.);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: std::f32::EPSILON and std::f64::EPSILON are available.
[INFO] [stderr]   --> tests/operators.rs:32:13
[INFO] [stderr]    |
[INFO] [stderr] 32 |             assert_eq!(Interpreter::process("3./4").unwrap(), 0.);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#float_cmp
[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] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: strict comparison of f32 or f64
[INFO] [stderr]   --> tests/operators.rs:37:13
[INFO] [stderr]    |
[INFO] [stderr] 37 |             assert_eq!(Interpreter::process("10%3").unwrap(), 1.);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: std::f32::EPSILON and std::f64::EPSILON are available.
[INFO] [stderr]   --> tests/operators.rs:37:13
[INFO] [stderr]    |
[INFO] [stderr] 37 |             assert_eq!(Interpreter::process("10%3").unwrap(), 1.);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#float_cmp
[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] error: strict comparison of f32 or f64
[INFO] [stderr]   --> tests/operators.rs:47:13
[INFO] [stderr]    |
[INFO] [stderr] 47 |             assert_eq!(Interpreter::process("5!").unwrap(), 120.);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: std::f32::EPSILON and std::f64::EPSILON are available.
[INFO] [stderr]   --> tests/operators.rs:47:13
[INFO] [stderr]    |
[INFO] [stderr] 47 |             assert_eq!(Interpreter::process("5!").unwrap(), 120.);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#float_cmp
[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] error: Could not compile `rcalc`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: strict comparison of f32 or f64
[INFO] [stderr]   --> tests/operators.rs:53:13
[INFO] [stderr]    |
[INFO] [stderr] 53 |             assert_eq!(Interpreter::process("-2!").unwrap(), f64::INFINITY);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: std::f32::EPSILON and std::f64::EPSILON are available.
[INFO] [stderr]   --> tests/operators.rs:53:13
[INFO] [stderr]    |
[INFO] [stderr] 53 |             assert_eq!(Interpreter::process("-2!").unwrap(), f64::INFINITY);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#float_cmp
[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] error: strict comparison of f32 or f64
[INFO] [stderr]   --> tests/operators.rs:59:13
[INFO] [stderr]    |
[INFO] [stderr] 59 |             assert_eq!(Interpreter::process("-3!").unwrap(), -f64::INFINITY);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: std::f32::EPSILON and std::f64::EPSILON are available.
[INFO] [stderr]   --> tests/operators.rs:59:13
[INFO] [stderr]    |
[INFO] [stderr] 59 |             assert_eq!(Interpreter::process("-3!").unwrap(), -f64::INFINITY);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#float_cmp
[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] error: strict comparison of f32 or f64
[INFO] [stderr]   --> tests/operators.rs:65:9
[INFO] [stderr]    |
[INFO] [stderr] 65 |         assert_eq!(Interpreter::process("-5 - + - 7").unwrap(), 2.);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: std::f32::EPSILON and std::f64::EPSILON are available.
[INFO] [stderr]   --> tests/operators.rs:65:9
[INFO] [stderr]    |
[INFO] [stderr] 65 |         assert_eq!(Interpreter::process("-5 - + - 7").unwrap(), 2.);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#float_cmp
[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] error: aborting due to 10 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rcalc`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/main.rs:15:20
[INFO] [stderr]    |
[INFO] [stderr] 15 |                 if line.trim().len() > 0 {
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!line.trim().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: length comparison to zero
[INFO] [stderr]   --> src/main.rs:15:20
[INFO] [stderr]    |
[INFO] [stderr] 15 |                 if line.trim().len() > 0 {
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!line.trim().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] error: build failed
[INFO] running `"docker" "inspect" "612b7805130bfeb6ed83688e0ce99db4d8db7a54ae7db93b01aaaccfc36442d3"`
[INFO] running `"docker" "rm" "-f" "612b7805130bfeb6ed83688e0ce99db4d8db7a54ae7db93b01aaaccfc36442d3"`
[INFO] [stdout] 612b7805130bfeb6ed83688e0ce99db4d8db7a54ae7db93b01aaaccfc36442d3