[INFO] fetching crate num_parser2 0.1.0...
[INFO] linting num_parser2-0.1.0 against nightly for clippy-nonminimal_bool-denied
[INFO] extracting crate num_parser2 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate num_parser2 0.1.0
[INFO] finished tweaking crates.io crate num_parser2 0.1.0
[INFO] tweaked toml for crates.io crate num_parser2 0.1.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate num_parser2 0.1.0 on toolchain nightly
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 28 packages to latest compatible versions
[INFO] [stderr]       Adding itertools v0.13.0 (available: v0.14.0)
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.10.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tuple-conv v1.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3027c0aebbe9125e443987493f37341bf30a8924e1575c16514f54b91d3956c9
[INFO] running `Command { std: "docker" "start" "-a" "3027c0aebbe9125e443987493f37341bf30a8924e1575c16514f54b91d3956c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3027c0aebbe9125e443987493f37341bf30a8924e1575c16514f54b91d3956c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3027c0aebbe9125e443987493f37341bf30a8924e1575c16514f54b91d3956c9", kill_on_drop: false }`
[INFO] [stdout] 3027c0aebbe9125e443987493f37341bf30a8924e1575c16514f54b91d3956c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "clippy" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 670bf731af568a437dddb49ad9be21ada7defcddbac0d2e05633add1078a63b1
[INFO] running `Command { std: "docker" "start" "-a" "670bf731af568a437dddb49ad9be21ada7defcddbac0d2e05633add1078a63b1", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]     Checking tuple-conv v1.0.1
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-iter v0.1.45
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]     Checking num v0.4.3
[INFO] [stderr]     Checking num_parser2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::ops::Add`
[INFO] [stdout]  --> src/objects/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::Add;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Add`
[INFO] [stdout]  --> src/objects/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::Add;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Not`
[INFO] [stdout]  --> src/operators/mod.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::ops::Not;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Not`
[INFO] [stdout]  --> src/operators/mod.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::ops::Not;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `Vec<T>` is already on the heap, the boxing is unnecessary
[INFO] [stdout]    --> src/function/builtin.rs:256:23
[INFO] [stdout]     |
[INFO] [stdout] 256 | fn branch(arguments: &Vec<Box<Expression>>, context: &Context, depth: u32) -> EvalResult<Value> {
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^ help: try: `Vec<Expression>`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#vec_box
[INFO] [stdout]     = note: `#[warn(clippy::vec_box)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]    --> src/function/builtin.rs:256:22
[INFO] [stdout]     |
[INFO] [stdout] 256 | fn branch(arguments: &Vec<Box<Expression>>, context: &Context, depth: u32) -> EvalResult<Value> {
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout]     = note: `#[warn(clippy::ptr_arg)]` on by default
[INFO] [stdout] help: change this to
[INFO] [stdout]     |
[INFO] [stdout] 256 - fn branch(arguments: &Vec<Box<Expression>>, context: &Context, depth: u32) -> EvalResult<Value> {
[INFO] [stdout] 256 + fn branch(arguments: &[Box<Expression>], context: &Context, depth: u32) -> EvalResult<Value> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `Vec<T>` is already on the heap, the boxing is unnecessary
[INFO] [stdout]    --> src/function/builtin.rs:256:23
[INFO] [stdout]     |
[INFO] [stdout] 256 | fn branch(arguments: &Vec<Box<Expression>>, context: &Context, depth: u32) -> EvalResult<Value> {
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^ help: try: `Vec<Expression>`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#vec_box
[INFO] [stdout]     = note: `#[warn(clippy::vec_box)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]    --> src/function/builtin.rs:256:22
[INFO] [stdout]     |
[INFO] [stdout] 256 | fn branch(arguments: &Vec<Box<Expression>>, context: &Context, depth: u32) -> EvalResult<Value> {
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout]     = note: `#[warn(clippy::ptr_arg)]` on by default
[INFO] [stdout] help: change this to
[INFO] [stdout]     |
[INFO] [stdout] 256 - fn branch(arguments: &Vec<Box<Expression>>, context: &Context, depth: u32) -> EvalResult<Value> {
[INFO] [stdout] 256 + fn branch(arguments: &[Box<Expression>], context: &Context, depth: u32) -> EvalResult<Value> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `if` can be collapsed into the outer `match`
[INFO] [stdout]    --> src/function/mod.rs:209:17
[INFO] [stdout]     |
[INFO] [stdout] 209 | /                 if arguments.len() != count {
[INFO] [stdout] 210 | |                     return Err(ErrorType::WrongFunctionArgumentsAmount {
[INFO] [stdout] 211 | |                         func_name: self.func_identifier.to_owned(),
[INFO] [stdout] 212 | |                         expected: count as u8,
[INFO] [stdout] 213 | |                         given: arguments.len() as u8,
[INFO] [stdout] 214 | |                     });
[INFO] [stdout] 215 | |                 }
[INFO] [stdout]     | |_________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_match
[INFO] [stdout]     = note: `#[warn(clippy::collapsible_match)]` on by default
[INFO] [stdout] help: collapse nested if block
[INFO] [stdout]     |
[INFO] [stdout] 208 ~             Arguments::Const(count)
[INFO] [stdout] 209 ~                 if arguments.len() != count => {
[INFO] [stdout] 210 |                     return Err(ErrorType::WrongFunctionArgumentsAmount {
[INFO] [stdout] ...
[INFO] [stdout] 214 |                     });
[INFO] [stdout] 215 ~                 }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you seem to be trying to use `match` for destructuring a single pattern. Consider using `if let`
[INFO] [stdout]    --> src/function/mod.rs:207:9
[INFO] [stdout]     |
[INFO] [stdout] 207 | /         match self.args {
[INFO] [stdout] 208 | |             Arguments::Const(count) => {
[INFO] [stdout] 209 | |                 if arguments.len() != count {
[INFO] [stdout] 210 | |                     return Err(ErrorType::WrongFunctionArgumentsAmount {
[INFO] [stdout] ...   |
[INFO] [stdout] 217 | |             _ => (),
[INFO] [stdout] 218 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stdout]     = note: `#[warn(clippy::single_match)]` on by default
[INFO] [stdout] help: try
[INFO] [stdout]     |
[INFO] [stdout] 207 ~         if let Arguments::Const(count) = self.args {
[INFO] [stdout] 208 +             if arguments.len() != count {
[INFO] [stdout] 209 +                 return Err(ErrorType::WrongFunctionArgumentsAmount {
[INFO] [stdout] 210 +                     func_name: self.func_identifier.to_owned(),
[INFO] [stdout] 211 +                     expected: count as u8,
[INFO] [stdout] 212 +                     given: arguments.len() as u8,
[INFO] [stdout] 213 +                 });
[INFO] [stdout] 214 +             }
[INFO] [stdout] 215 +         }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]    --> src/function/mod.rs:277:16
[INFO] [stdout]     |
[INFO] [stdout] 277 |     arguments: &Vec<Box<Expression>>,
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]     |
[INFO] [stdout] 277 ~     arguments: &[Box<Expression>],
[INFO] [stdout] 278 |     context: &Context,
[INFO] [stdout] 279 |     depth: u32,
[INFO] [stdout] 280 | ) -> EvalResult<Value> {
[INFO] [stdout] 281 ~     Expression::Union(arguments.to_owned()).eval(context, None, depth)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `if` can be collapsed into the outer `match`
[INFO] [stdout]    --> src/function/mod.rs:209:17
[INFO] [stdout]     |
[INFO] [stdout] 209 | /                 if arguments.len() != count {
[INFO] [stdout] 210 | |                     return Err(ErrorType::WrongFunctionArgumentsAmount {
[INFO] [stdout] 211 | |                         func_name: self.func_identifier.to_owned(),
[INFO] [stdout] 212 | |                         expected: count as u8,
[INFO] [stdout] 213 | |                         given: arguments.len() as u8,
[INFO] [stdout] 214 | |                     });
[INFO] [stdout] 215 | |                 }
[INFO] [stdout]     | |_________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_match
[INFO] [stdout]     = note: `#[warn(clippy::collapsible_match)]` on by default
[INFO] [stdout] help: collapse nested if block
[INFO] [stdout]     |
[INFO] [stdout] 208 ~             Arguments::Const(count)
[INFO] [stdout] 209 ~                 if arguments.len() != count => {
[INFO] [stdout] 210 |                     return Err(ErrorType::WrongFunctionArgumentsAmount {
[INFO] [stdout] ...
[INFO] [stdout] 214 |                     });
[INFO] [stdout] 215 ~                 }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you seem to be trying to use `match` for destructuring a single pattern. Consider using `if let`
[INFO] [stdout]    --> src/function/mod.rs:207:9
[INFO] [stdout]     |
[INFO] [stdout] 207 | /         match self.args {
[INFO] [stdout] 208 | |             Arguments::Const(count) => {
[INFO] [stdout] 209 | |                 if arguments.len() != count {
[INFO] [stdout] 210 | |                     return Err(ErrorType::WrongFunctionArgumentsAmount {
[INFO] [stdout] ...   |
[INFO] [stdout] 217 | |             _ => (),
[INFO] [stdout] 218 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stdout]     = note: `#[warn(clippy::single_match)]` on by default
[INFO] [stdout] help: try
[INFO] [stdout]     |
[INFO] [stdout] 207 ~         if let Arguments::Const(count) = self.args {
[INFO] [stdout] 208 +             if arguments.len() != count {
[INFO] [stdout] 209 +                 return Err(ErrorType::WrongFunctionArgumentsAmount {
[INFO] [stdout] 210 +                     func_name: self.func_identifier.to_owned(),
[INFO] [stdout] 211 +                     expected: count as u8,
[INFO] [stdout] 212 +                     given: arguments.len() as u8,
[INFO] [stdout] 213 +                 });
[INFO] [stdout] 214 +             }
[INFO] [stdout] 215 +         }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]    --> src/function/mod.rs:277:16
[INFO] [stdout]     |
[INFO] [stdout] 277 |     arguments: &Vec<Box<Expression>>,
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]     |
[INFO] [stdout] 277 ~     arguments: &[Box<Expression>],
[INFO] [stdout] 278 |     context: &Context,
[INFO] [stdout] 279 |     depth: u32,
[INFO] [stdout] 280 | ) -> EvalResult<Value> {
[INFO] [stdout] 281 ~     Expression::Union(arguments.to_owned()).eval(context, None, depth)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: returning the result of a `let` binding from a block
[INFO] [stdout]   --> src/context/settings.rs:82:17
[INFO] [stdout]    |
[INFO] [stdout] 78 | /                 let result_value = match final_result {
[INFO] [stdout] 79 | |                     Ok(val) => val,
[INFO] [stdout] 80 | |                     Err(e) => return Err(e), // Return the error if multiplication fails
[INFO] [stdout] 81 | |                 };
[INFO] [stdout]    | |__________________- unnecessary `let` binding
[INFO] [stdout] 82 |                   result_value
[INFO] [stdout]    |                   ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stdout]    = note: `#[warn(clippy::let_and_return)]` on by default
[INFO] [stdout] help: return the expression directly
[INFO] [stdout]    |
[INFO] [stdout] 78 ~                 
[INFO] [stdout] 79 ~                 match final_result {
[INFO] [stdout] 80 +                     Ok(val) => val,
[INFO] [stdout] 81 +                     Err(e) => return Err(e), // Return the error if multiplication fails
[INFO] [stdout] 82 +                 }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `match` expression can be replaced with `?`
[INFO] [stdout]   --> src/context/settings.rs:73:38
[INFO] [stdout]    |
[INFO] [stdout] 73 |                   let division_value = match division_result {
[INFO] [stdout]    |  ______________________________________^
[INFO] [stdout] 74 | |                     Ok(val) => val,
[INFO] [stdout] 75 | |                     Err(e) => return Err(e), // Return the error if division fails
[INFO] [stdout] 76 | |                 };
[INFO] [stdout]    | |_________________^ help: try instead: `division_result?`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#question_mark
[INFO] [stdout]    = note: `#[warn(clippy::question_mark)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `match` expression can be replaced with `?`
[INFO] [stdout]   --> src/context/settings.rs:78:36
[INFO] [stdout]    |
[INFO] [stdout] 78 |                   let result_value = match final_result {
[INFO] [stdout]    |  ____________________________________^
[INFO] [stdout] 79 | |                     Ok(val) => val,
[INFO] [stdout] 80 | |                     Err(e) => return Err(e), // Return the error if multiplication fails
[INFO] [stdout] 81 | |                 };
[INFO] [stdout]    | |_________________^ help: try instead: `final_result?`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#question_mark
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: returning the result of a `let` binding from a block
[INFO] [stdout]   --> src/context/settings.rs:97:17
[INFO] [stdout]    |
[INFO] [stdout] 92 | /                 let result_value = match final_result {
[INFO] [stdout] 93 | |                     Ok(val) => val,
[INFO] [stdout] 94 | |                     Err(e) => return Err(e), // Return the error if multiplication fails
[INFO] [stdout] 95 | |                 };
[INFO] [stdout]    | |__________________- unnecessary `let` binding
[INFO] [stdout] 96 |
[INFO] [stdout] 97 |                   result_value
[INFO] [stdout]    |                   ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stdout] help: return the expression directly
[INFO] [stdout]    |
[INFO] [stdout] 92 ~                 
[INFO] [stdout] 93 |
[INFO] [stdout] 94 ~                 match final_result {
[INFO] [stdout] 95 +                     Ok(val) => val,
[INFO] [stdout] 96 +                     Err(e) => return Err(e), // Return the error if multiplication fails
[INFO] [stdout] 97 +                 }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `match` expression can be replaced with `?`
[INFO] [stdout]   --> src/context/settings.rs:86:38
[INFO] [stdout]    |
[INFO] [stdout] 86 |                   let division_value = match division_result {
[INFO] [stdout]    |  ______________________________________^
[INFO] [stdout] 87 | |                     Ok(val) => val,
[INFO] [stdout] 88 | |                     Err(e) => return Err(e), // Return the error if division fails
[INFO] [stdout] 89 | |                 };
[INFO] [stdout]    | |_________________^ help: try instead: `division_result?`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#question_mark
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `match` expression can be replaced with `?`
[INFO] [stdout]   --> src/context/settings.rs:92:36
[INFO] [stdout]    |
[INFO] [stdout] 92 |                   let result_value = match final_result {
[INFO] [stdout]    |  ____________________________________^
[INFO] [stdout] 93 | |                     Ok(val) => val,
[INFO] [stdout] 94 | |                     Err(e) => return Err(e), // Return the error if multiplication fails
[INFO] [stdout] 95 | |                 };
[INFO] [stdout]    | |_________________^ help: try instead: `final_result?`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#question_mark
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `match` expression can be replaced with `?`
[INFO] [stdout]    --> src/context/settings.rs:106:38
[INFO] [stdout]     |
[INFO] [stdout] 106 |                   let division_value = match division_result {
[INFO] [stdout]     |  ______________________________________^
[INFO] [stdout] 107 | |                     Ok(val) => val,
[INFO] [stdout] 108 | |                     Err(e) => return Err(e), // Return error if division fails
[INFO] [stdout] 109 | |                 };
[INFO] [stdout]     | |_________________^ help: try instead: `division_result?`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#question_mark
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `match` expression can be replaced with `?`
[INFO] [stdout]    --> src/context/settings.rs:112:17
[INFO] [stdout]     |
[INFO] [stdout] 112 | /                 match final_result {
[INFO] [stdout] 113 | |                     Ok(val) => val,
[INFO] [stdout] 114 | |                     Err(e) => return Err(e), // Return error if multiplication fails
[INFO] [stdout] 115 | |                 }
[INFO] [stdout]     | |_________________^ help: try instead: `final_result?`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#question_mark
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `match` expression can be replaced with `?`
[INFO] [stdout]    --> src/context/settings.rs:120:38
[INFO] [stdout]     |
[INFO] [stdout] 120 |                   let division_value = match division_result {
[INFO] [stdout]     |  ______________________________________^
[INFO] [stdout] 121 | |                     Ok(val) => val,
[INFO] [stdout] 122 | |                     Err(e) => return Err(e), // Return error if division fails
[INFO] [stdout] 123 | |                 };
[INFO] [stdout]     | |_________________^ help: try instead: `division_result?`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#question_mark
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `match` expression can be replaced with `?`
[INFO] [stdout]    --> src/context/settings.rs:126:17
[INFO] [stdout]     |
[INFO] [stdout] 126 | /                 match final_result {
[INFO] [stdout] 127 | |                     Ok(val) => val,
[INFO] [stdout] 128 | |                     Err(e) => return Err(e), // Return error if multiplication fails
[INFO] [stdout] 129 | |                 }
[INFO] [stdout]     | |_________________^ help: try instead: `final_result?`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#question_mark
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `impl` can be derived
[INFO] [stdout]   --> src/context/mod.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | / impl Default for Context {
[INFO] [stdout] 28 | |     fn default() -> Self {
[INFO] [stdout] 29 | |         Self {
[INFO] [stdout] 30 | |             functions: HashMap::new(),
[INFO] [stdout] ...  |
[INFO] [stdout] 37 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#derivable_impls
[INFO] [stdout]    = note: `#[warn(clippy::derivable_impls)]` on by default
[INFO] [stdout] help: replace the manual implementation with a derive attribute
[INFO] [stdout]    |
[INFO] [stdout] 12 + #[derive(Default)]
[INFO] [stdout] 13 | pub struct Context {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: returning the result of a `let` binding from a block
[INFO] [stdout]   --> src/context/settings.rs:82:17
[INFO] [stdout]    |
[INFO] [stdout] 78 | /                 let result_value = match final_result {
[INFO] [stdout] 79 | |                     Ok(val) => val,
[INFO] [stdout] 80 | |                     Err(e) => return Err(e), // Return the error if multiplication fails
[INFO] [stdout] 81 | |                 };
[INFO] [stdout]    | |__________________- unnecessary `let` binding
[INFO] [stdout] 82 |                   result_value
[INFO] [stdout]    |                   ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stdout]    = note: `#[warn(clippy::let_and_return)]` on by default
[INFO] [stdout] help: return the expression directly
[INFO] [stdout]    |
[INFO] [stdout] 78 ~                 
[INFO] [stdout] 79 ~                 match final_result {
[INFO] [stdout] 80 +                     Ok(val) => val,
[INFO] [stdout] 81 +                     Err(e) => return Err(e), // Return the error if multiplication fails
[INFO] [stdout] 82 +                 }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `match` expression can be replaced with `?`
[INFO] [stdout]   --> src/context/settings.rs:73:38
[INFO] [stdout]    |
[INFO] [stdout] 73 |                   let division_value = match division_result {
[INFO] [stdout]    |  ______________________________________^
[INFO] [stdout] 74 | |                     Ok(val) => val,
[INFO] [stdout] 75 | |                     Err(e) => return Err(e), // Return the error if division fails
[INFO] [stdout] 76 | |                 };
[INFO] [stdout]    | |_________________^ help: try instead: `division_result?`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#question_mark
[INFO] [stdout]    = note: `#[warn(clippy::question_mark)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `match` expression can be replaced with `?`
[INFO] [stdout]   --> src/context/settings.rs:78:36
[INFO] [stdout]    |
[INFO] [stdout] 78 |                   let result_value = match final_result {
[INFO] [stdout]    |  ____________________________________^
[INFO] [stdout] 79 | |                     Ok(val) => val,
[INFO] [stdout] 80 | |                     Err(e) => return Err(e), // Return the error if multiplication fails
[INFO] [stdout] 81 | |                 };
[INFO] [stdout]    | |_________________^ help: try instead: `final_result?`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#question_mark
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: returning the result of a `let` binding from a block
[INFO] [stdout]   --> src/context/settings.rs:97:17
[INFO] [stdout]    |
[INFO] [stdout] 92 | /                 let result_value = match final_result {
[INFO] [stdout] 93 | |                     Ok(val) => val,
[INFO] [stdout] 94 | |                     Err(e) => return Err(e), // Return the error if multiplication fails
[INFO] [stdout] 95 | |                 };
[INFO] [stdout]    | |__________________- unnecessary `let` binding
[INFO] [stdout] 96 |
[INFO] [stdout] 97 |                   result_value
[INFO] [stdout]    |                   ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stdout] help: return the expression directly
[INFO] [stdout]    |
[INFO] [stdout] 92 ~                 
[INFO] [stdout] 93 |
[INFO] [stdout] 94 ~                 match final_result {
[INFO] [stdout] 95 +                     Ok(val) => val,
[INFO] [stdout] 96 +                     Err(e) => return Err(e), // Return the error if multiplication fails
[INFO] [stdout] 97 +                 }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `match` expression can be replaced with `?`
[INFO] [stdout]   --> src/context/settings.rs:86:38
[INFO] [stdout]    |
[INFO] [stdout] 86 |                   let division_value = match division_result {
[INFO] [stdout]    |  ______________________________________^
[INFO] [stdout] 87 | |                     Ok(val) => val,
[INFO] [stdout] 88 | |                     Err(e) => return Err(e), // Return the error if division fails
[INFO] [stdout] 89 | |                 };
[INFO] [stdout]    | |_________________^ help: try instead: `division_result?`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#question_mark
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `match` expression can be replaced with `?`
[INFO] [stdout]   --> src/context/settings.rs:92:36
[INFO] [stdout]    |
[INFO] [stdout] 92 |                   let result_value = match final_result {
[INFO] [stdout]    |  ____________________________________^
[INFO] [stdout] 93 | |                     Ok(val) => val,
[INFO] [stdout] 94 | |                     Err(e) => return Err(e), // Return the error if multiplication fails
[INFO] [stdout] 95 | |                 };
[INFO] [stdout]    | |_________________^ help: try instead: `final_result?`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#question_mark
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `match` expression can be replaced with `?`
[INFO] [stdout]    --> src/context/settings.rs:106:38
[INFO] [stdout]     |
[INFO] [stdout] 106 |                   let division_value = match division_result {
[INFO] [stdout]     |  ______________________________________^
[INFO] [stdout] 107 | |                     Ok(val) => val,
[INFO] [stdout] 108 | |                     Err(e) => return Err(e), // Return error if division fails
[INFO] [stdout] 109 | |                 };
[INFO] [stdout]     | |_________________^ help: try instead: `division_result?`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#question_mark
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `match` expression can be replaced with `?`
[INFO] [stdout]    --> src/context/settings.rs:112:17
[INFO] [stdout]     |
[INFO] [stdout] 112 | /                 match final_result {
[INFO] [stdout] 113 | |                     Ok(val) => val,
[INFO] [stdout] 114 | |                     Err(e) => return Err(e), // Return error if multiplication fails
[INFO] [stdout] 115 | |                 }
[INFO] [stdout]     | |_________________^ help: try instead: `final_result?`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#question_mark
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `match` expression can be replaced with `?`
[INFO] [stdout]    --> src/context/settings.rs:120:38
[INFO] [stdout]     |
[INFO] [stdout] 120 |                   let division_value = match division_result {
[INFO] [stdout]     |  ______________________________________^
[INFO] [stdout] 121 | |                     Ok(val) => val,
[INFO] [stdout] 122 | |                     Err(e) => return Err(e), // Return error if division fails
[INFO] [stdout] 123 | |                 };
[INFO] [stdout]     | |_________________^ help: try instead: `division_result?`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#question_mark
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `match` expression can be replaced with `?`
[INFO] [stdout]    --> src/context/settings.rs:126:17
[INFO] [stdout]     |
[INFO] [stdout] 126 | /                 match final_result {
[INFO] [stdout] 127 | |                     Ok(val) => val,
[INFO] [stdout] 128 | |                     Err(e) => return Err(e), // Return error if multiplication fails
[INFO] [stdout] 129 | |                 }
[INFO] [stdout]     | |_________________^ help: try instead: `final_result?`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#question_mark
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `impl` can be derived
[INFO] [stdout]   --> src/context/mod.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | / impl Default for Context {
[INFO] [stdout] 28 | |     fn default() -> Self {
[INFO] [stdout] 29 | |         Self {
[INFO] [stdout] 30 | |             functions: HashMap::new(),
[INFO] [stdout] ...  |
[INFO] [stdout] 37 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#derivable_impls
[INFO] [stdout]    = note: `#[warn(clippy::derivable_impls)]` on by default
[INFO] [stdout] help: replace the manual implementation with a derive attribute
[INFO] [stdout]    |
[INFO] [stdout] 12 + #[derive(Default)]
[INFO] [stdout] 13 | pub struct Context {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/interpreter/mod.rs:65:17
[INFO] [stdout]    |
[INFO] [stdout] 65 | /                 return Ok(Request::VarDeclaration(
[INFO] [stdout] 66 | |                     identifier.clone(),
[INFO] [stdout] 67 | |                     Box::new(right.clone()),
[INFO] [stdout] 68 | |                 ))
[INFO] [stdout]    | |__________________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]    = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 65 ~                 Ok(Request::VarDeclaration(
[INFO] [stdout] 66 +                     identifier.clone(),
[INFO] [stdout] 67 +                     Box::new(right.clone()),
[INFO] [stdout] 68 +                 ))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/interpreter/mod.rs:79:17
[INFO] [stdout]    |
[INFO] [stdout] 79 | /                 return Ok(Request::FuncDeclaration(
[INFO] [stdout] 80 | |                     identifier.clone(),
[INFO] [stdout] 81 | |                     params,
[INFO] [stdout] 82 | |                     Box::new(right.clone()),
[INFO] [stdout] 83 | |                 ));
[INFO] [stdout]    | |__________________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 79 ~                 Ok(Request::FuncDeclaration(
[INFO] [stdout] 80 +                     identifier.clone(),
[INFO] [stdout] 81 +                     params,
[INFO] [stdout] 82 +                     Box::new(right.clone()),
[INFO] [stdout] 83 ~                 ))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/interpreter/mod.rs:85:18
[INFO] [stdout]    |
[INFO] [stdout] 85 |             _ => return Err(ErrorType::InvalidDeclaration),
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 85 -             _ => return Err(ErrorType::InvalidDeclaration),
[INFO] [stdout] 85 +             _ => Err(ErrorType::InvalidDeclaration),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/interpreter/mod.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 88 |         return Ok(Request::Evaluation(Box::new(tree.0.clone())));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 88 -         return Ok(Request::Evaluation(Box::new(tree.0.clone())));
[INFO] [stdout] 88 +         Ok(Request::Evaluation(Box::new(tree.0.clone())))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/interpreter/mod.rs:65:17
[INFO] [stdout]    |
[INFO] [stdout] 65 | /                 return Ok(Request::VarDeclaration(
[INFO] [stdout] 66 | |                     identifier.clone(),
[INFO] [stdout] 67 | |                     Box::new(right.clone()),
[INFO] [stdout] 68 | |                 ))
[INFO] [stdout]    | |__________________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]    = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 65 ~                 Ok(Request::VarDeclaration(
[INFO] [stdout] 66 +                     identifier.clone(),
[INFO] [stdout] 67 +                     Box::new(right.clone()),
[INFO] [stdout] 68 +                 ))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/interpreter/mod.rs:79:17
[INFO] [stdout]    |
[INFO] [stdout] 79 | /                 return Ok(Request::FuncDeclaration(
[INFO] [stdout] 80 | |                     identifier.clone(),
[INFO] [stdout] 81 | |                     params,
[INFO] [stdout] 82 | |                     Box::new(right.clone()),
[INFO] [stdout] 83 | |                 ));
[INFO] [stdout]    | |__________________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 79 ~                 Ok(Request::FuncDeclaration(
[INFO] [stdout] 80 +                     identifier.clone(),
[INFO] [stdout] 81 +                     params,
[INFO] [stdout] 82 +                     Box::new(right.clone()),
[INFO] [stdout] 83 ~                 ))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/interpreter/mod.rs:85:18
[INFO] [stdout]    |
[INFO] [stdout] 85 |             _ => return Err(ErrorType::InvalidDeclaration),
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 85 -             _ => return Err(ErrorType::InvalidDeclaration),
[INFO] [stdout] 85 +             _ => Err(ErrorType::InvalidDeclaration),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/interpreter/mod.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 88 |         return Ok(Request::Evaluation(Box::new(tree.0.clone())));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 88 -         return Ok(Request::Evaluation(Box::new(tree.0.clone())));
[INFO] [stdout] 88 +         Ok(Request::Evaluation(Box::new(tree.0.clone())))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enclosing `Ok` and `?` operator are unneeded
[INFO] [stdout]    --> src/objects/mod.rs:157:32
[INFO] [stdout]     |
[INFO] [stdout] 157 |                         return Ok(expr.eval(context, scope, depth)?);
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_question_mark
[INFO] [stdout]     = note: `#[warn(clippy::needless_question_mark)]` on by default
[INFO] [stdout] help: remove the enclosing `Ok` and `?` operator
[INFO] [stdout]     |
[INFO] [stdout] 157 -                         return Ok(expr.eval(context, scope, depth)?);
[INFO] [stdout] 157 +                         return expr.eval(context, scope, depth);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enclosing `Ok` and `?` operator are unneeded
[INFO] [stdout]    --> src/objects/mod.rs:163:28
[INFO] [stdout]     |
[INFO] [stdout] 163 |                     return Ok(expr.eval(context, scope, depth)?);
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_question_mark
[INFO] [stdout] help: remove the enclosing `Ok` and `?` operator
[INFO] [stdout]     |
[INFO] [stdout] 163 -                     return Ok(expr.eval(context, scope, depth)?);
[INFO] [stdout] 163 +                     return expr.eval(context, scope, depth);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/objects/mod.rs:173:46
[INFO] [stdout]     |
[INFO] [stdout] 173 |                     joined_context.join_with(&c);
[INFO] [stdout]     |                                              ^^ help: change this to: `c`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout]     = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enclosing `Ok` and `?` operator are unneeded
[INFO] [stdout]    --> src/objects/mod.rs:157:32
[INFO] [stdout]     |
[INFO] [stdout] 157 |                         return Ok(expr.eval(context, scope, depth)?);
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_question_mark
[INFO] [stdout]     = note: `#[warn(clippy::needless_question_mark)]` on by default
[INFO] [stdout] help: remove the enclosing `Ok` and `?` operator
[INFO] [stdout]     |
[INFO] [stdout] 157 -                         return Ok(expr.eval(context, scope, depth)?);
[INFO] [stdout] 157 +                         return expr.eval(context, scope, depth);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enclosing `Ok` and `?` operator are unneeded
[INFO] [stdout]    --> src/objects/mod.rs:163:28
[INFO] [stdout]     |
[INFO] [stdout] 163 |                     return Ok(expr.eval(context, scope, depth)?);
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_question_mark
[INFO] [stdout] help: remove the enclosing `Ok` and `?` operator
[INFO] [stdout]     |
[INFO] [stdout] 163 -                     return Ok(expr.eval(context, scope, depth)?);
[INFO] [stdout] 163 +                     return expr.eval(context, scope, depth);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/objects/mod.rs:173:46
[INFO] [stdout]     |
[INFO] [stdout] 173 |                     joined_context.join_with(&c);
[INFO] [stdout]     |                                              ^^ help: change this to: `c`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout]     = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> src/operators/mod.rs:61:13
[INFO] [stdout]    |
[INFO] [stdout] 61 |         lv: &Vec<Value>,
[INFO] [stdout]    |             ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 61 -         lv: &Vec<Value>,
[INFO] [stdout] 61 +         lv: &[Value],
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> src/operators/mod.rs:62:13
[INFO] [stdout]    |
[INFO] [stdout] 62 |         rv: &Vec<Value>,
[INFO] [stdout]    |             ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 62 -         rv: &Vec<Value>,
[INFO] [stdout] 62 +         rv: &[Value],
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> src/operators/mod.rs:61:13
[INFO] [stdout]    |
[INFO] [stdout] 61 |         lv: &Vec<Value>,
[INFO] [stdout]    |             ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 61 -         lv: &Vec<Value>,
[INFO] [stdout] 61 +         lv: &[Value],
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> src/operators/mod.rs:62:13
[INFO] [stdout]    |
[INFO] [stdout] 62 |         rv: &Vec<Value>,
[INFO] [stdout]    |             ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 62 -         rv: &Vec<Value>,
[INFO] [stdout] 62 +         rv: &[Value],
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `not` can be confused for the standard trait method `std::ops::Not::not`
[INFO] [stdout]    --> src/operators/mod.rs:353:5
[INFO] [stdout]     |
[INFO] [stdout] 353 | /     pub fn not(self) -> EvalResult<Self> {
[INFO] [stdout] 354 | |         convert_and_apply(
[INFO] [stdout] 355 | |             &self,
[INFO] [stdout] 356 | |             &Value::Bool(true),
[INFO] [stdout] ...   |
[INFO] [stdout] 362 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider implementing the trait `std::ops::Not` or choosing a less ambiguous method name
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#should_implement_trait
[INFO] [stdout]     = note: `#[warn(clippy::should_implement_trait)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `not` can be confused for the standard trait method `std::ops::Not::not`
[INFO] [stdout]    --> src/operators/mod.rs:353:5
[INFO] [stdout]     |
[INFO] [stdout] 353 | /     pub fn not(self) -> EvalResult<Self> {
[INFO] [stdout] 354 | |         convert_and_apply(
[INFO] [stdout] 355 | |             &self,
[INFO] [stdout] 356 | |             &Value::Bool(true),
[INFO] [stdout] ...   |
[INFO] [stdout] 362 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider implementing the trait `std::ops::Not` or choosing a less ambiguous method name
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#should_implement_trait
[INFO] [stdout]     = note: `#[warn(clippy::should_implement_trait)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match expression looks like `matches!` macro
[INFO] [stdout]   --> src/token/tokentype.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 85 | /         match self {
[INFO] [stdout] 86 | |             Plus | Minus | Star | Slash | Equal | Caret | Percentage | LessThan | GreaterThan
[INFO] [stdout] 87 | |             | LessOrEqualTo | GreaterOrEqualTo | DoubleAnd | DoubleOr | DoubleEqual | NotEqual => {
[INFO] [stdout] 88 | |                 true
[INFO] [stdout] 89 | |             }
[INFO] [stdout] 90 | |             _ => false,
[INFO] [stdout] 91 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_like_matches_macro
[INFO] [stdout]    = note: `#[warn(clippy::match_like_matches_macro)]` on by default
[INFO] [stdout] help: use `matches!` directly
[INFO] [stdout]    |
[INFO] [stdout] 85 ~         matches!(self, Plus | Minus | Star | Slash | Equal | Caret | Percentage | LessThan | GreaterThan
[INFO] [stdout] 86 +             | LessOrEqualTo | GreaterOrEqualTo | DoubleAnd | DoubleOr | DoubleEqual | NotEqual)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match expression looks like `matches!` macro
[INFO] [stdout]   --> src/token/tokentype.rs:95:9
[INFO] [stdout]    |
[INFO] [stdout] 95 | /         match self {
[INFO] [stdout] 96 | |             Minus | Exclamation => true,
[INFO] [stdout] 97 | |             _ => false,
[INFO] [stdout] 98 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_like_matches_macro
[INFO] [stdout] help: use `matches!` directly
[INFO] [stdout]    |
[INFO] [stdout] 95 -         match self {
[INFO] [stdout] 96 -             Minus | Exclamation => true,
[INFO] [stdout] 97 -             _ => false,
[INFO] [stdout] 98 -         }
[INFO] [stdout] 95 +         matches!(self, Minus | Exclamation)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match expression looks like `matches!` macro
[INFO] [stdout]    --> src/token/tokentype.rs:102:9
[INFO] [stdout]     |
[INFO] [stdout] 102 | /         match self {
[INFO] [stdout] 103 | |             Comma => true,
[INFO] [stdout] 104 | |             _ => false,
[INFO] [stdout] 105 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_like_matches_macro
[INFO] [stdout] help: use `matches!` directly
[INFO] [stdout]     |
[INFO] [stdout] 102 -         match self {
[INFO] [stdout] 103 -             Comma => true,
[INFO] [stdout] 104 -             _ => false,
[INFO] [stdout] 105 -         }
[INFO] [stdout] 102 +         matches!(self, Comma)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calling `.extend(_.chars())`
[INFO] [stdout]   --> src/token/mod.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |         self.value.extend(token.value.chars());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `self.value.push_str(&token.value)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#string_extend_chars
[INFO] [stdout]    = note: `#[warn(clippy::string_extend_chars)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this loop could be written as a `for` loop
[INFO] [stdout]   --> src/token/mod.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 49 |     while let Some(c) = content_iter.next() {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for c in content_iter`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_on_iterator
[INFO] [stdout]    = note: `#[warn(clippy::while_let_on_iterator)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/token/mod.rs:125:8
[INFO] [stdout]     |
[INFO] [stdout] 125 |     if stream.len() == 0 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `stream.is_empty()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout]     = note: `#[warn(clippy::len_zero)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/token/mod.rs:174:8
[INFO] [stdout]     |
[INFO] [stdout] 174 |     if stream.len() == 0 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `stream.is_empty()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match expression looks like `matches!` macro
[INFO] [stdout]   --> src/token/tokentype.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 85 | /         match self {
[INFO] [stdout] 86 | |             Plus | Minus | Star | Slash | Equal | Caret | Percentage | LessThan | GreaterThan
[INFO] [stdout] 87 | |             | LessOrEqualTo | GreaterOrEqualTo | DoubleAnd | DoubleOr | DoubleEqual | NotEqual => {
[INFO] [stdout] 88 | |                 true
[INFO] [stdout] 89 | |             }
[INFO] [stdout] 90 | |             _ => false,
[INFO] [stdout] 91 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_like_matches_macro
[INFO] [stdout]    = note: `#[warn(clippy::match_like_matches_macro)]` on by default
[INFO] [stdout] help: use `matches!` directly
[INFO] [stdout]    |
[INFO] [stdout] 85 ~         matches!(self, Plus | Minus | Star | Slash | Equal | Caret | Percentage | LessThan | GreaterThan
[INFO] [stdout] 86 +             | LessOrEqualTo | GreaterOrEqualTo | DoubleAnd | DoubleOr | DoubleEqual | NotEqual)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match expression looks like `matches!` macro
[INFO] [stdout]   --> src/token/tokentype.rs:95:9
[INFO] [stdout]    |
[INFO] [stdout] 95 | /         match self {
[INFO] [stdout] 96 | |             Minus | Exclamation => true,
[INFO] [stdout] 97 | |             _ => false,
[INFO] [stdout] 98 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_like_matches_macro
[INFO] [stdout] help: use `matches!` directly
[INFO] [stdout]    |
[INFO] [stdout] 95 -         match self {
[INFO] [stdout] 96 -             Minus | Exclamation => true,
[INFO] [stdout] 97 -             _ => false,
[INFO] [stdout] 98 -         }
[INFO] [stdout] 95 +         matches!(self, Minus | Exclamation)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match expression looks like `matches!` macro
[INFO] [stdout]    --> src/token/tokentype.rs:102:9
[INFO] [stdout]     |
[INFO] [stdout] 102 | /         match self {
[INFO] [stdout] 103 | |             Comma => true,
[INFO] [stdout] 104 | |             _ => false,
[INFO] [stdout] 105 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_like_matches_macro
[INFO] [stdout] help: use `matches!` directly
[INFO] [stdout]     |
[INFO] [stdout] 102 -         match self {
[INFO] [stdout] 103 -             Comma => true,
[INFO] [stdout] 104 -             _ => false,
[INFO] [stdout] 105 -         }
[INFO] [stdout] 102 +         matches!(self, Comma)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this loop could be written as a `for` loop
[INFO] [stdout]    --> src/token/mod.rs:223:5
[INFO] [stdout]     |
[INFO] [stdout] 223 |     while let Some(token) = stream_as_iter.next() {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for token in stream_as_iter`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_on_iterator
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&String` instead of `&str` involves a new object where a slice will do
[INFO] [stdout]    --> src/token/mod.rs:244:20
[INFO] [stdout]     |
[INFO] [stdout] 244 |         candidate: &String,
[INFO] [stdout]     |                    ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]     |
[INFO] [stdout] 244 -         candidate: &String,
[INFO] [stdout] 244 +         candidate: &str,
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calling `.extend(_.chars())`
[INFO] [stdout]   --> src/token/mod.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |         self.value.extend(token.value.chars());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `self.value.push_str(&token.value)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#string_extend_chars
[INFO] [stdout]    = note: `#[warn(clippy::string_extend_chars)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this loop could be written as a `for` loop
[INFO] [stdout]    --> src/token/mod.rs:247:9
[INFO] [stdout]     |
[INFO] [stdout] 247 |         while let Some((i_type, patterns)) = patterns_as_iter.next() {
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for (i_type, patterns) in patterns_as_iter`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_on_iterator
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this loop could be written as a `for` loop
[INFO] [stdout]   --> src/token/mod.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 49 |     while let Some(c) = content_iter.next() {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for c in content_iter`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_on_iterator
[INFO] [stdout]    = note: `#[warn(clippy::while_let_on_iterator)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/token/mod.rs:297:11
[INFO] [stdout]     |
[INFO] [stdout] 297 |     while to_identify.len() > 0 {
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!to_identify.is_empty()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/token/mod.rs:347:12
[INFO] [stdout]     |
[INFO] [stdout] 347 |           if previous_token_type == Literal               && current_type == OpeningBracket
[INFO] [stdout]     |  ____________^
[INFO] [stdout] 348 | |             || previous_token_type == ClosingBracket        && current_type == Literal
[INFO] [stdout] 349 | |             // literal-literal
[INFO] [stdout] 350 | |             || previous_token_type == Literal               && current_type == Literal
[INFO] [stdout] 351 | |             // bracket-bracket: (2)(4)
[INFO] [stdout] 352 | |             || previous_token_type == ClosingBracket        && current_type == OpeningBracket
[INFO] [stdout]     | |_____________________________________________________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]     = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] help: try
[INFO] [stdout]     |
[INFO] [stdout] 347 -         if previous_token_type == Literal               && current_type == OpeningBracket
[INFO] [stdout] 348 -             || previous_token_type == ClosingBracket        && current_type == Literal
[INFO] [stdout] 349 -             // literal-literal
[INFO] [stdout] 350 -             || previous_token_type == Literal               && current_type == Literal
[INFO] [stdout] 351 -             // bracket-bracket: (2)(4)
[INFO] [stdout] 352 -             || previous_token_type == ClosingBracket        && current_type == OpeningBracket
[INFO] [stdout] 347 +         if !(previous_token_type != Literal && previous_token_type != ClosingBracket || current_type != OpeningBracket && current_type != Literal)
[INFO] [stdout]     |
[INFO] [stdout] 347 -         if previous_token_type == Literal               && current_type == OpeningBracket
[INFO] [stdout] 348 -             || previous_token_type == ClosingBracket        && current_type == Literal
[INFO] [stdout] 349 -             // literal-literal
[INFO] [stdout] 350 -             || previous_token_type == Literal               && current_type == Literal
[INFO] [stdout] 351 -             // bracket-bracket: (2)(4)
[INFO] [stdout] 352 -             || previous_token_type == ClosingBracket        && current_type == OpeningBracket
[INFO] [stdout] 347 +         if (current_type == Literal || current_type == OpeningBracket) && (previous_token_type == ClosingBracket || previous_token_type == Literal)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/token/mod.rs:331:8
[INFO] [stdout]     |
[INFO] [stdout] 331 |     if stream.len() == 0 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `stream.is_empty()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/token/mod.rs:125:8
[INFO] [stdout]     |
[INFO] [stdout] 125 |     if stream.len() == 0 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `stream.is_empty()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout]     = note: `#[warn(clippy::len_zero)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&String` instead of `&str` involves a new object where a slice will do
[INFO] [stdout]    --> src/token/mod.rs:375:31
[INFO] [stdout]     |
[INFO] [stdout] 375 | fn remove_whitespaces(string: &String) -> String {
[INFO] [stdout]     |                               ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]     |
[INFO] [stdout] 375 - fn remove_whitespaces(string: &String) -> String {
[INFO] [stdout] 375 + fn remove_whitespaces(string: &str) -> String {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/token/mod.rs:174:8
[INFO] [stdout]     |
[INFO] [stdout] 174 |     if stream.len() == 0 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `stream.is_empty()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this loop could be written as a `for` loop
[INFO] [stdout]    --> src/token/mod.rs:223:5
[INFO] [stdout]     |
[INFO] [stdout] 223 |     while let Some(token) = stream_as_iter.next() {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for token in stream_as_iter`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_on_iterator
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&String` instead of `&str` involves a new object where a slice will do
[INFO] [stdout]    --> src/token/mod.rs:244:20
[INFO] [stdout]     |
[INFO] [stdout] 244 |         candidate: &String,
[INFO] [stdout]     |                    ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]     |
[INFO] [stdout] 244 -         candidate: &String,
[INFO] [stdout] 244 +         candidate: &str,
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this loop could be written as a `for` loop
[INFO] [stdout]    --> src/token/mod.rs:247:9
[INFO] [stdout]     |
[INFO] [stdout] 247 |         while let Some((i_type, patterns)) = patterns_as_iter.next() {
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for (i_type, patterns) in patterns_as_iter`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_on_iterator
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/tree/mod.rs:51:14
[INFO] [stdout]    |
[INFO] [stdout] 51 |         _ => return Err(ErrorType::MissingClosingBracket),
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 51 -         _ => return Err(ErrorType::MissingClosingBracket),
[INFO] [stdout] 51 +         _ => Err(ErrorType::MissingClosingBracket),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/token/mod.rs:297:11
[INFO] [stdout]     |
[INFO] [stdout] 297 |     while to_identify.len() > 0 {
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!to_identify.is_empty()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/token/mod.rs:347:12
[INFO] [stdout]     |
[INFO] [stdout] 347 |           if previous_token_type == Literal               && current_type == OpeningBracket
[INFO] [stdout]     |  ____________^
[INFO] [stdout] 348 | |             || previous_token_type == ClosingBracket        && current_type == Literal
[INFO] [stdout] 349 | |             // literal-literal
[INFO] [stdout] 350 | |             || previous_token_type == Literal               && current_type == Literal
[INFO] [stdout] 351 | |             // bracket-bracket: (2)(4)
[INFO] [stdout] 352 | |             || previous_token_type == ClosingBracket        && current_type == OpeningBracket
[INFO] [stdout]     | |_____________________________________________________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]     = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] help: try
[INFO] [stdout]     |
[INFO] [stdout] 347 -         if previous_token_type == Literal               && current_type == OpeningBracket
[INFO] [stdout] 348 -             || previous_token_type == ClosingBracket        && current_type == Literal
[INFO] [stdout] 349 -             // literal-literal
[INFO] [stdout] 350 -             || previous_token_type == Literal               && current_type == Literal
[INFO] [stdout] 351 -             // bracket-bracket: (2)(4)
[INFO] [stdout] 352 -             || previous_token_type == ClosingBracket        && current_type == OpeningBracket
[INFO] [stdout] 347 +         if !(previous_token_type != Literal && previous_token_type != ClosingBracket || current_type != OpeningBracket && current_type != Literal)
[INFO] [stdout]     |
[INFO] [stdout] 347 -         if previous_token_type == Literal               && current_type == OpeningBracket
[INFO] [stdout] 348 -             || previous_token_type == ClosingBracket        && current_type == Literal
[INFO] [stdout] 349 -             // literal-literal
[INFO] [stdout] 350 -             || previous_token_type == Literal               && current_type == Literal
[INFO] [stdout] 351 -             // bracket-bracket: (2)(4)
[INFO] [stdout] 352 -             || previous_token_type == ClosingBracket        && current_type == OpeningBracket
[INFO] [stdout] 347 +         if (current_type == Literal || current_type == OpeningBracket) && (previous_token_type == ClosingBracket || previous_token_type == Literal)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/tree/mod.rs:133:25
[INFO] [stdout]     |
[INFO] [stdout] 133 |             Ok(node) => return Ok(node),
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 133 -             Ok(node) => return Ok(node),
[INFO] [stdout] 133 +             Ok(node) => Ok(node),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/tree/mod.rs:135:17
[INFO] [stdout]     |
[INFO] [stdout] 135 | /                 return Ok(build_unary_operator(
[INFO] [stdout] 136 | |                     sorted_node_tokens,
[INFO] [stdout] 137 | |                     stream,
[INFO] [stdout] 138 | |                     &token_info,
[INFO] [stdout] 139 | |                     range,
[INFO] [stdout] 140 | |                 )?)
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 135 ~                 Ok(build_unary_operator(
[INFO] [stdout] 136 +                     sorted_node_tokens,
[INFO] [stdout] 137 +                     stream,
[INFO] [stdout] 138 +                     &token_info,
[INFO] [stdout] 139 +                     range,
[INFO] [stdout] 140 +                 )?)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/token/mod.rs:331:8
[INFO] [stdout]     |
[INFO] [stdout] 331 |     if stream.len() == 0 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `stream.is_empty()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/tree/mod.rs:145:9
[INFO] [stdout]     |
[INFO] [stdout] 145 | /         return Ok(build_binary_operator(
[INFO] [stdout] 146 | |             sorted_node_tokens,
[INFO] [stdout] 147 | |             stream,
[INFO] [stdout] 148 | |             &token_info,
[INFO] [stdout] 149 | |             range,
[INFO] [stdout] 150 | |         )?);
[INFO] [stdout]     | |___________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 145 ~         Ok(build_binary_operator(
[INFO] [stdout] 146 +             sorted_node_tokens,
[INFO] [stdout] 147 +             stream,
[INFO] [stdout] 148 +             &token_info,
[INFO] [stdout] 149 +             range,
[INFO] [stdout] 150 ~         )?)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/tree/mod.rs:153:9
[INFO] [stdout]     |
[INFO] [stdout] 153 | /         return Ok(build_unary_operator(
[INFO] [stdout] 154 | |             sorted_node_tokens,
[INFO] [stdout] 155 | |             stream,
[INFO] [stdout] 156 | |             &token_info,
[INFO] [stdout] 157 | |             range,
[INFO] [stdout] 158 | |         )?);
[INFO] [stdout]     | |___________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 153 ~         Ok(build_unary_operator(
[INFO] [stdout] 154 +             sorted_node_tokens,
[INFO] [stdout] 155 +             stream,
[INFO] [stdout] 156 +             &token_info,
[INFO] [stdout] 157 +             range,
[INFO] [stdout] 158 ~         )?)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/tree/mod.rs:160:9
[INFO] [stdout]     |
[INFO] [stdout] 160 | /         return Ok(build_union_operator(
[INFO] [stdout] 161 | |             sorted_node_tokens,
[INFO] [stdout] 162 | |             stream,
[INFO] [stdout] 163 | |             &token_info,
[INFO] [stdout] 164 | |             range,
[INFO] [stdout] 165 | |         )?);
[INFO] [stdout]     | |___________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 160 ~         Ok(build_union_operator(
[INFO] [stdout] 161 +             sorted_node_tokens,
[INFO] [stdout] 162 +             stream,
[INFO] [stdout] 163 +             &token_info,
[INFO] [stdout] 164 +             range,
[INFO] [stdout] 165 ~         )?)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&String` instead of `&str` involves a new object where a slice will do
[INFO] [stdout]    --> src/token/mod.rs:375:31
[INFO] [stdout]     |
[INFO] [stdout] 375 | fn remove_whitespaces(string: &String) -> String {
[INFO] [stdout]     |                               ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]     |
[INFO] [stdout] 375 - fn remove_whitespaces(string: &String) -> String {
[INFO] [stdout] 375 + fn remove_whitespaces(string: &str) -> String {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/tree/mod.rs:170:17
[INFO] [stdout]     |
[INFO] [stdout] 170 |                 return Ok(Node::Literal(Value::from_string(token_info.token.value)?))
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 170 -                 return Ok(Node::Literal(Value::from_string(token_info.token.value)?))
[INFO] [stdout] 170 +                 Ok(Node::Literal(Value::from_string(token_info.token.value)?))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/tree/mod.rs:115:8
[INFO] [stdout]     |
[INFO] [stdout] 115 |     if sorted_node_tokens.len() == 0 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `sorted_node_tokens.is_empty()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: binary comparison to literal `Option::None`
[INFO] [stdout]    --> src/tree/mod.rs:116:12
[INFO] [stdout]     |
[INFO] [stdout] 116 |         if position == None {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^ help: use `Option::is_none()` instead: `position.is_none()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#partialeq_to_none
[INFO] [stdout]     = note: `#[warn(clippy::partialeq_to_none)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enclosing `Ok` and `?` operator are unneeded
[INFO] [stdout]    --> src/tree/mod.rs:135:24
[INFO] [stdout]     |
[INFO] [stdout] 135 |                   return Ok(build_unary_operator(
[INFO] [stdout]     |  ________________________^
[INFO] [stdout] 136 | |                     sorted_node_tokens,
[INFO] [stdout] 137 | |                     stream,
[INFO] [stdout] 138 | |                     &token_info,
[INFO] [stdout] 139 | |                     range,
[INFO] [stdout] 140 | |                 )?)
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_question_mark
[INFO] [stdout] help: remove the enclosing `Ok` and `?` operator
[INFO] [stdout]     |
[INFO] [stdout] 135 ~                 return build_unary_operator(
[INFO] [stdout] 136 |                     sorted_node_tokens,
[INFO] [stdout] ...
[INFO] [stdout] 139 |                     range,
[INFO] [stdout] 140 ~                 )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enclosing `Ok` and `?` operator are unneeded
[INFO] [stdout]    --> src/tree/mod.rs:145:16
[INFO] [stdout]     |
[INFO] [stdout] 145 |           return Ok(build_binary_operator(
[INFO] [stdout]     |  ________________^
[INFO] [stdout] 146 | |             sorted_node_tokens,
[INFO] [stdout] 147 | |             stream,
[INFO] [stdout] 148 | |             &token_info,
[INFO] [stdout] 149 | |             range,
[INFO] [stdout] 150 | |         )?);
[INFO] [stdout]     | |___________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_question_mark
[INFO] [stdout] help: remove the enclosing `Ok` and `?` operator
[INFO] [stdout]     |
[INFO] [stdout] 145 ~         return build_binary_operator(
[INFO] [stdout] 146 |             sorted_node_tokens,
[INFO] [stdout] ...
[INFO] [stdout] 149 |             range,
[INFO] [stdout] 150 ~         );
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enclosing `Ok` and `?` operator are unneeded
[INFO] [stdout]    --> src/tree/mod.rs:153:16
[INFO] [stdout]     |
[INFO] [stdout] 153 |           return Ok(build_unary_operator(
[INFO] [stdout]     |  ________________^
[INFO] [stdout] 154 | |             sorted_node_tokens,
[INFO] [stdout] 155 | |             stream,
[INFO] [stdout] 156 | |             &token_info,
[INFO] [stdout] 157 | |             range,
[INFO] [stdout] 158 | |         )?);
[INFO] [stdout]     | |___________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_question_mark
[INFO] [stdout] help: remove the enclosing `Ok` and `?` operator
[INFO] [stdout]     |
[INFO] [stdout] 153 ~         return build_unary_operator(
[INFO] [stdout] 154 |             sorted_node_tokens,
[INFO] [stdout] ...
[INFO] [stdout] 157 |             range,
[INFO] [stdout] 158 ~         );
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enclosing `Ok` and `?` operator are unneeded
[INFO] [stdout]    --> src/tree/mod.rs:160:16
[INFO] [stdout]     |
[INFO] [stdout] 160 |           return Ok(build_union_operator(
[INFO] [stdout]     |  ________________^
[INFO] [stdout] 161 | |             sorted_node_tokens,
[INFO] [stdout] 162 | |             stream,
[INFO] [stdout] 163 | |             &token_info,
[INFO] [stdout] 164 | |             range,
[INFO] [stdout] 165 | |         )?);
[INFO] [stdout]     | |___________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_question_mark
[INFO] [stdout] help: remove the enclosing `Ok` and `?` operator
[INFO] [stdout]     |
[INFO] [stdout] 160 ~         return build_union_operator(
[INFO] [stdout] 161 |             sorted_node_tokens,
[INFO] [stdout] ...
[INFO] [stdout] 164 |             range,
[INFO] [stdout] 165 ~         );
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/tree/mod.rs:51:14
[INFO] [stdout]    |
[INFO] [stdout] 51 |         _ => return Err(ErrorType::MissingClosingBracket),
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 51 -         _ => return Err(ErrorType::MissingClosingBracket),
[INFO] [stdout] 51 +         _ => Err(ErrorType::MissingClosingBracket),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/tree/mod.rs:270:8
[INFO] [stdout]     |
[INFO] [stdout] 270 |     if candidates.len() == 0 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `candidates.is_empty()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `Vec<T>` is already on the heap, the boxing is unnecessary
[INFO] [stdout]    --> src/tree/mod.rs:298:17
[INFO] [stdout]     |
[INFO] [stdout] 298 | ) -> EvalResult<Vec<Box<Node>>> {
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^ help: try: `Vec<Node>`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#vec_box
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless conversion to the same type: `usize`
[INFO] [stdout]    --> src/tree/mod.rs:352:27
[INFO] [stdout]     |
[INFO] [stdout] 352 |                 return Ok(index.try_into().unwrap());
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing `.try_into()`
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout]     = note: `#[warn(clippy::useless_conversion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/tree/mod.rs:133:25
[INFO] [stdout]     |
[INFO] [stdout] 133 |             Ok(node) => return Ok(node),
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 133 -             Ok(node) => return Ok(node),
[INFO] [stdout] 133 +             Ok(node) => Ok(node),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/tree/mod.rs:135:17
[INFO] [stdout]     |
[INFO] [stdout] 135 | /                 return Ok(build_unary_operator(
[INFO] [stdout] 136 | |                     sorted_node_tokens,
[INFO] [stdout] 137 | |                     stream,
[INFO] [stdout] 138 | |                     &token_info,
[INFO] [stdout] 139 | |                     range,
[INFO] [stdout] 140 | |                 )?)
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 135 ~                 Ok(build_unary_operator(
[INFO] [stdout] 136 +                     sorted_node_tokens,
[INFO] [stdout] 137 +                     stream,
[INFO] [stdout] 138 +                     &token_info,
[INFO] [stdout] 139 +                     range,
[INFO] [stdout] 140 +                 )?)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/tree/mod.rs:145:9
[INFO] [stdout]     |
[INFO] [stdout] 145 | /         return Ok(build_binary_operator(
[INFO] [stdout] 146 | |             sorted_node_tokens,
[INFO] [stdout] 147 | |             stream,
[INFO] [stdout] 148 | |             &token_info,
[INFO] [stdout] 149 | |             range,
[INFO] [stdout] 150 | |         )?);
[INFO] [stdout]     | |___________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 145 ~         Ok(build_binary_operator(
[INFO] [stdout] 146 +             sorted_node_tokens,
[INFO] [stdout] 147 +             stream,
[INFO] [stdout] 148 +             &token_info,
[INFO] [stdout] 149 +             range,
[INFO] [stdout] 150 ~         )?)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/tree/mod.rs:153:9
[INFO] [stdout]     |
[INFO] [stdout] 153 | /         return Ok(build_unary_operator(
[INFO] [stdout] 154 | |             sorted_node_tokens,
[INFO] [stdout] 155 | |             stream,
[INFO] [stdout] 156 | |             &token_info,
[INFO] [stdout] 157 | |             range,
[INFO] [stdout] 158 | |         )?);
[INFO] [stdout]     | |___________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 153 ~         Ok(build_unary_operator(
[INFO] [stdout] 154 +             sorted_node_tokens,
[INFO] [stdout] 155 +             stream,
[INFO] [stdout] 156 +             &token_info,
[INFO] [stdout] 157 +             range,
[INFO] [stdout] 158 ~         )?)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/tree/mod.rs:160:9
[INFO] [stdout]     |
[INFO] [stdout] 160 | /         return Ok(build_union_operator(
[INFO] [stdout] 161 | |             sorted_node_tokens,
[INFO] [stdout] 162 | |             stream,
[INFO] [stdout] 163 | |             &token_info,
[INFO] [stdout] 164 | |             range,
[INFO] [stdout] 165 | |         )?);
[INFO] [stdout]     | |___________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 160 ~         Ok(build_union_operator(
[INFO] [stdout] 161 +             sorted_node_tokens,
[INFO] [stdout] 162 +             stream,
[INFO] [stdout] 163 +             &token_info,
[INFO] [stdout] 164 +             range,
[INFO] [stdout] 165 ~         )?)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/tree/mod.rs:170:17
[INFO] [stdout]     |
[INFO] [stdout] 170 |                 return Ok(Node::Literal(Value::from_string(token_info.token.value)?))
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 170 -                 return Ok(Node::Literal(Value::from_string(token_info.token.value)?))
[INFO] [stdout] 170 +                 Ok(Node::Literal(Value::from_string(token_info.token.value)?))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/tree/mod.rs:115:8
[INFO] [stdout]     |
[INFO] [stdout] 115 |     if sorted_node_tokens.len() == 0 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `sorted_node_tokens.is_empty()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: binary comparison to literal `Option::None`
[INFO] [stdout]    --> src/tree/mod.rs:116:12
[INFO] [stdout]     |
[INFO] [stdout] 116 |         if position == None {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^ help: use `Option::is_none()` instead: `position.is_none()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#partialeq_to_none
[INFO] [stdout]     = note: `#[warn(clippy::partialeq_to_none)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enclosing `Ok` and `?` operator are unneeded
[INFO] [stdout]    --> src/tree/mod.rs:135:24
[INFO] [stdout]     |
[INFO] [stdout] 135 |                   return Ok(build_unary_operator(
[INFO] [stdout]     |  ________________________^
[INFO] [stdout] 136 | |                     sorted_node_tokens,
[INFO] [stdout] 137 | |                     stream,
[INFO] [stdout] 138 | |                     &token_info,
[INFO] [stdout] 139 | |                     range,
[INFO] [stdout] 140 | |                 )?)
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_question_mark
[INFO] [stdout] help: remove the enclosing `Ok` and `?` operator
[INFO] [stdout]     |
[INFO] [stdout] 135 ~                 return build_unary_operator(
[INFO] [stdout] 136 |                     sorted_node_tokens,
[INFO] [stdout] ...
[INFO] [stdout] 139 |                     range,
[INFO] [stdout] 140 ~                 )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enclosing `Ok` and `?` operator are unneeded
[INFO] [stdout]    --> src/tree/mod.rs:145:16
[INFO] [stdout]     |
[INFO] [stdout] 145 |           return Ok(build_binary_operator(
[INFO] [stdout]     |  ________________^
[INFO] [stdout] 146 | |             sorted_node_tokens,
[INFO] [stdout] 147 | |             stream,
[INFO] [stdout] 148 | |             &token_info,
[INFO] [stdout] 149 | |             range,
[INFO] [stdout] 150 | |         )?);
[INFO] [stdout]     | |___________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_question_mark
[INFO] [stdout] help: remove the enclosing `Ok` and `?` operator
[INFO] [stdout]     |
[INFO] [stdout] 145 ~         return build_binary_operator(
[INFO] [stdout] 146 |             sorted_node_tokens,
[INFO] [stdout] ...
[INFO] [stdout] 149 |             range,
[INFO] [stdout] 150 ~         );
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enclosing `Ok` and `?` operator are unneeded
[INFO] [stdout]    --> src/tree/mod.rs:153:16
[INFO] [stdout]     |
[INFO] [stdout] 153 |           return Ok(build_unary_operator(
[INFO] [stdout]     |  ________________^
[INFO] [stdout] 154 | |             sorted_node_tokens,
[INFO] [stdout] 155 | |             stream,
[INFO] [stdout] 156 | |             &token_info,
[INFO] [stdout] 157 | |             range,
[INFO] [stdout] 158 | |         )?);
[INFO] [stdout]     | |___________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_question_mark
[INFO] [stdout] help: remove the enclosing `Ok` and `?` operator
[INFO] [stdout]     |
[INFO] [stdout] 153 ~         return build_unary_operator(
[INFO] [stdout] 154 |             sorted_node_tokens,
[INFO] [stdout] ...
[INFO] [stdout] 157 |             range,
[INFO] [stdout] 158 ~         );
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enclosing `Ok` and `?` operator are unneeded
[INFO] [stdout]    --> src/tree/mod.rs:160:16
[INFO] [stdout]     |
[INFO] [stdout] 160 |           return Ok(build_union_operator(
[INFO] [stdout]     |  ________________^
[INFO] [stdout] 161 | |             sorted_node_tokens,
[INFO] [stdout] 162 | |             stream,
[INFO] [stdout] 163 | |             &token_info,
[INFO] [stdout] 164 | |             range,
[INFO] [stdout] 165 | |         )?);
[INFO] [stdout]     | |___________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_question_mark
[INFO] [stdout] help: remove the enclosing `Ok` and `?` operator
[INFO] [stdout]     |
[INFO] [stdout] 160 ~         return build_union_operator(
[INFO] [stdout] 161 |             sorted_node_tokens,
[INFO] [stdout] ...
[INFO] [stdout] 164 |             range,
[INFO] [stdout] 165 ~         );
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: consider using `sort_by_key`
[INFO] [stdout]    --> src/tree/mod.rs:395:5
[INFO] [stdout]     |
[INFO] [stdout] 395 |     union_operators.sort_by(|a, b| a.position.cmp(&b.position));
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_sort_by
[INFO] [stdout]     = note: `#[warn(clippy::unnecessary_sort_by)]` on by default
[INFO] [stdout] help: try
[INFO] [stdout]     |
[INFO] [stdout] 395 -     union_operators.sort_by(|a, b| a.position.cmp(&b.position));
[INFO] [stdout] 395 +     union_operators.sort_by_key(|a| a.position);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/tree/mod.rs:270:8
[INFO] [stdout]     |
[INFO] [stdout] 270 |     if candidates.len() == 0 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `candidates.is_empty()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `Vec<T>` is already on the heap, the boxing is unnecessary
[INFO] [stdout]    --> src/tree/mod.rs:298:17
[INFO] [stdout]     |
[INFO] [stdout] 298 | ) -> EvalResult<Vec<Box<Node>>> {
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^ help: try: `Vec<Node>`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#vec_box
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless conversion to the same type: `usize`
[INFO] [stdout]    --> src/tree/mod.rs:352:27
[INFO] [stdout]     |
[INFO] [stdout] 352 |                 return Ok(index.try_into().unwrap());
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing `.try_into()`
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout]     = note: `#[warn(clippy::useless_conversion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: consider using `sort_by_key`
[INFO] [stdout]    --> src/tree/mod.rs:395:5
[INFO] [stdout]     |
[INFO] [stdout] 395 |     union_operators.sort_by(|a, b| a.position.cmp(&b.position));
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_sort_by
[INFO] [stdout]     = note: `#[warn(clippy::unnecessary_sort_by)]` on by default
[INFO] [stdout] help: try
[INFO] [stdout]     |
[INFO] [stdout] 395 -     union_operators.sort_by(|a, b| a.position.cmp(&b.position));
[INFO] [stdout] 395 +     union_operators.sort_by_key(|a| a.position);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> src/function/builtin.rs:111:22
[INFO] [stdout]     |
[INFO] [stdout] 111 |         .map(|x| (x.0.clone(), x.1.clone()))
[INFO] [stdout]     |                      ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> src/function/builtin.rs:111:22
[INFO] [stdout]     |
[INFO] [stdout] 111 |         .map(|x| (x.0.clone(), x.1.clone()))
[INFO] [stdout]     |                      ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.67s
[INFO] running `Command { std: "docker" "inspect" "670bf731af568a437dddb49ad9be21ada7defcddbac0d2e05633add1078a63b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "670bf731af568a437dddb49ad9be21ada7defcddbac0d2e05633add1078a63b1", kill_on_drop: false }`
[INFO] [stdout] 670bf731af568a437dddb49ad9be21ada7defcddbac0d2e05633add1078a63b1