[INFO] cloning repository https://github.com/wkcs/ncc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wkcs/ncc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwkcs%2Fncc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwkcs%2Fncc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1a6f3e3495186536e6cc69d862092c1d64be5579
[INFO] linting wkcs/ncc against nightly for clippy-nonminimal_bool-denied
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwkcs%2Fncc" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/wkcs/ncc
[INFO] finished tweaking git repo https://github.com/wkcs/ncc
[INFO] tweaked toml for git repo https://github.com/wkcs/ncc written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/wkcs/ncc on toolchain nightly
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/wkcs/ncc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 278266fd0fcbb4e419bf24ded44cd92a26eebaeeb3b9c2ed198728b76cc6ba48
[INFO] running `Command { std: "docker" "start" "-a" "278266fd0fcbb4e419bf24ded44cd92a26eebaeeb3b9c2ed198728b76cc6ba48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "278266fd0fcbb4e419bf24ded44cd92a26eebaeeb3b9c2ed198728b76cc6ba48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "278266fd0fcbb4e419bf24ded44cd92a26eebaeeb3b9c2ed198728b76cc6ba48", kill_on_drop: false }`
[INFO] [stdout] 278266fd0fcbb4e419bf24ded44cd92a26eebaeeb3b9c2ed198728b76cc6ba48
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 2e58197457f18d8f1014e3cecbcd462f31c5e953fad23e3ab7d520d0ffdd8d27
[INFO] running `Command { std: "docker" "start" "-a" "2e58197457f18d8f1014e3cecbcd462f31c5e953fad23e3ab7d520d0ffdd8d27", kill_on_drop: false }`
[INFO] [stderr]     Checking ncc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]   --> src/cmdline.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |             val_type: val_type,
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `val_type`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout]    = note: `#[warn(clippy::redundant_field_names)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]   --> src/lex.rs:84:13
[INFO] [stdout]    |
[INFO] [stdout] 84 |             loc: loc,
[INFO] [stdout]    |             ^^^^^^^^ help: replace it with: `loc`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]   --> src/lex.rs:85:13
[INFO] [stdout]    |
[INFO] [stdout] 85 |             token_type: token_type,
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `token_type`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]    --> src/lex.rs:187:29
[INFO] [stdout]     |
[INFO] [stdout] 187 | ...                   line: line,
[INFO] [stdout]     |                       ^^^^^^^^^^ help: replace it with: `line`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]    --> src/lex.rs:188:29
[INFO] [stdout]     |
[INFO] [stdout] 188 | ...                   column: column,
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^ help: replace it with: `column`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]    --> src/lex.rs:220:29
[INFO] [stdout]     |
[INFO] [stdout] 220 | ...                   column: column,
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^ help: replace it with: `column`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: inconsistent casing in hexadecimal literal
[INFO] [stdout]    --> src/main.rs:118:17
[INFO] [stdout]     |
[INFO] [stdout] 118 |     let test4 = 0xaBcdef;
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using `0xabcdef` or `0xABCDEF`
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#mixed_case_hex_literals
[INFO] [stdout]     = note: `#[warn(clippy::mixed_case_hex_literals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this is a decimal constant
[INFO] [stdout]    --> src/main.rs:119:17
[INFO] [stdout]     |
[INFO] [stdout] 119 |     let test5 = 01234567;
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#zero_prefixed_literal
[INFO] [stdout]     = note: `#[warn(clippy::zero_prefixed_literal)]` on by default
[INFO] [stdout] help: if you mean to use a decimal constant, remove the `0` to avoid confusion
[INFO] [stdout]     |
[INFO] [stdout] 119 -     let test5 = 01234567;
[INFO] [stdout] 119 +     let test5 = 1234567;
[INFO] [stdout]     |
[INFO] [stdout] help: if you mean to use an octal constant, use `0o`
[INFO] [stdout]     |
[INFO] [stdout] 119 |     let test5 = 0o1234567;
[INFO] [stdout]     |                  +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]   --> src/cmdline.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |             val_type: val_type,
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `val_type`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout]    = note: `#[warn(clippy::redundant_field_names)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]   --> src/lex.rs:84:13
[INFO] [stdout]    |
[INFO] [stdout] 84 |             loc: loc,
[INFO] [stdout]    |             ^^^^^^^^ help: replace it with: `loc`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]   --> src/lex.rs:85:13
[INFO] [stdout]    |
[INFO] [stdout] 85 |             token_type: token_type,
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `token_type`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]    --> src/lex.rs:187:29
[INFO] [stdout]     |
[INFO] [stdout] 187 | ...                   line: line,
[INFO] [stdout]     |                       ^^^^^^^^^^ help: replace it with: `line`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]    --> src/lex.rs:188:29
[INFO] [stdout]     |
[INFO] [stdout] 188 | ...                   column: column,
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^ help: replace it with: `column`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]    --> src/lex.rs:220:29
[INFO] [stdout]     |
[INFO] [stdout] 220 | ...                   column: column,
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^ help: replace it with: `column`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: inconsistent casing in hexadecimal literal
[INFO] [stdout]    --> src/main.rs:118:17
[INFO] [stdout]     |
[INFO] [stdout] 118 |     let test4 = 0xaBcdef;
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using `0xabcdef` or `0xABCDEF`
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#mixed_case_hex_literals
[INFO] [stdout]     = note: `#[warn(clippy::mixed_case_hex_literals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this is a decimal constant
[INFO] [stdout]    --> src/main.rs:119:17
[INFO] [stdout]     |
[INFO] [stdout] 119 |     let test5 = 01234567;
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#zero_prefixed_literal
[INFO] [stdout]     = note: `#[warn(clippy::zero_prefixed_literal)]` on by default
[INFO] [stdout] help: if you mean to use a decimal constant, remove the `0` to avoid confusion
[INFO] [stdout]     |
[INFO] [stdout] 119 -     let test5 = 01234567;
[INFO] [stdout] 119 +     let test5 = 1234567;
[INFO] [stdout]     |
[INFO] [stdout] help: if you mean to use an octal constant, use `0o`
[INFO] [stdout]     |
[INFO] [stdout] 119 |     let test5 = 0o1234567;
[INFO] [stdout]     |                  +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `value` is never read
[INFO] [stdout]    --> src/cmdline.rs:272:49
[INFO] [stdout]     |
[INFO] [stdout] 272 | ...                   let mut value = String::new();
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `value` is never read
[INFO] [stdout]    --> src/cmdline.rs:272:49
[INFO] [stdout]     |
[INFO] [stdout] 272 | ...                   let mut value = String::new();
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]    --> src/lex.rs:400:33
[INFO] [stdout]     |
[INFO] [stdout] 400 |     fn parse_keyword(&mut self, bytes: &[u8]) -> bool {
[INFO] [stdout]     |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lex.rs:452:41
[INFO] [stdout]     |
[INFO] [stdout] 434 |                 ' ' | ';' | ',' | '\t' | '\n' | '\x0C' | '\r' | '!'..='/' | ':'..='@' | '['..='`' | '{'..='~' => {
[INFO] [stdout]     |                                                                                         --------- matches all the relevant values
[INFO] [stdout] ...
[INFO] [stdout] 452 |                 'a'..='z' | 'A'..='Z' | '_' | '0'..='9' => (),
[INFO] [stdout]     |                                         ^^^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `test`
[INFO] [stdout]    --> src/main.rs:115:9
[INFO] [stdout]     |
[INFO] [stdout] 115 |     let test = 1.2;
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `test2`
[INFO] [stdout]    --> src/main.rs:116:9
[INFO] [stdout]     |
[INFO] [stdout] 116 |     let test2: f64 = 3.4f64;
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_test2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `test3`
[INFO] [stdout]    --> src/main.rs:117:9
[INFO] [stdout]     |
[INFO] [stdout] 117 |     let test3 = 0b10101;
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_test3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `test4`
[INFO] [stdout]    --> src/main.rs:118:9
[INFO] [stdout]     |
[INFO] [stdout] 118 |     let test4 = 0xaBcdef;
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_test4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `test5`
[INFO] [stdout]    --> src/main.rs:119:9
[INFO] [stdout]     |
[INFO] [stdout] 119 |     let test5 = 01234567;
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_test5`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]    --> src/lex.rs:400:33
[INFO] [stdout]     |
[INFO] [stdout] 400 |     fn parse_keyword(&mut self, bytes: &[u8]) -> bool {
[INFO] [stdout]     |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `OptVal` is never constructed
[INFO] [stdout]  --> src/cmdline.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum CmdValType {
[INFO] [stdout]   |          ---------- variant in this enum
[INFO] [stdout] 6 |     NoVal,
[INFO] [stdout] 7 |     OptVal,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `CmdValType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_value`, `get_value_by_name`, and `get_value_by_index` are never used
[INFO] [stdout]    --> src/cmdline.rs:337:12
[INFO] [stdout]     |
[INFO] [stdout]  42 | impl CmdLine {
[INFO] [stdout]     | ------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 337 |     pub fn get_value(&self, cmd: &CmdInfo) -> Option<&Vec<String>> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 345 |     pub fn get_value_by_name(&self, str: &str) -> Option<&Vec<String>> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 355 |     pub fn get_value_by_index(&self, index: usize) -> Option<&Vec<String>> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `KVoid`, `KChar`, `KInt`, `KFloat`, and `Kdouble` are never constructed
[INFO] [stdout]   --> src/lex.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout]  6 | pub enum KeyWordType {
[INFO] [stdout]    |          ----------- variants in this enum
[INFO] [stdout]  7 |     KVoid,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]  8 |     KChar,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]  9 |     KInt,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 10 |     KFloat,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 11 |     Kdouble,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `KeyWordType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `OpAssign` is never constructed
[INFO] [stdout]   --> src/lex.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub enum OperatorType {
[INFO] [stdout]    |          ------------ variant in this enum
[INFO] [stdout] 16 |     OpEq,
[INFO] [stdout] 17 |     OpAssign,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `OperatorType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/lex.rs:31:14
[INFO] [stdout]    |
[INFO] [stdout] 31 |     Operator(OperatorType),
[INFO] [stdout]    |     -------- ^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 31 -     Operator(OperatorType),
[INFO] [stdout] 31 +     Operator(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lex.rs:452:41
[INFO] [stdout]     |
[INFO] [stdout] 434 |                 ' ' | ';' | ',' | '\t' | '\n' | '\x0C' | '\r' | '!'..='/' | ':'..='@' | '['..='`' | '{'..='~' => {
[INFO] [stdout]     |                                                                                         --------- matches all the relevant values
[INFO] [stdout] ...
[INFO] [stdout] 452 |                 'a'..='z' | 'A'..='Z' | '_' | '0'..='9' => (),
[INFO] [stdout]     |                                         ^^^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `KeyWord` and `FlotNumber` are never constructed
[INFO] [stdout]   --> src/lex.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub enum TokenType {
[INFO] [stdout]    |          --------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 25 |     KeyWord(KeyWordType),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 26 |     Number,
[INFO] [stdout] 27 |     FlotNumber,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `add_token` and `parse_keyword` are never used
[INFO] [stdout]    --> src/lex.rs:82:12
[INFO] [stdout]     |
[INFO] [stdout]  70 | impl Lex {
[INFO] [stdout]     | -------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  82 |     pub fn add_token(&mut self, loc: Location, token_type: TokenType, source: &str) {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 400 |     fn parse_keyword(&mut self, bytes: &[u8]) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/cmdline.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |         return cmdline;
[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] 50 -         return cmdline;
[INFO] [stdout] 50 +         cmdline
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/cmdline.rs:66:25
[INFO] [stdout]    |
[INFO] [stdout] 66 |             val_str: if val_str.len() == 0 {
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `val_str.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/cmdline.rs:74:13
[INFO] [stdout]    |
[INFO] [stdout] 74 |         if (short.len() == 0) && (long.len() == 0) {
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `short.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/cmdline.rs:74:35
[INFO] [stdout]    |
[INFO] [stdout] 74 |         if (short.len() == 0) && (long.len() == 0) {
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `long.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/cmdline.rs:78:12
[INFO] [stdout]    |
[INFO] [stdout] 78 |         if help.len() == 0 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `help.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/cmdline.rs:132:9
[INFO] [stdout]     |
[INFO] [stdout] 132 |         return help;
[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] 132 -         return help;
[INFO] [stdout] 132 +         help
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/cmdline.rs:98:16
[INFO] [stdout]    |
[INFO] [stdout] 98 |             if cmd.short.len() > 0 {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!cmd.short.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/cmdline.rs:100:20
[INFO] [stdout]     |
[INFO] [stdout] 100 |                 if cmd.long.len() > 0 {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!cmd.long.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/cmdline.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |         return None;
[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] 142 -         return None;
[INFO] [stdout] 142 +         None
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/cmdline.rs:152:21
[INFO] [stdout]     |
[INFO] [stdout] 152 |                     return Some(CmdMatchType::Long);
[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] 152 -                     return Some(CmdMatchType::Long);
[INFO] [stdout] 152 +                     Some(CmdMatchType::Long)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/cmdline.rs:154:21
[INFO] [stdout]     |
[INFO] [stdout] 154 |                     return None;
[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] 154 -                     return None;
[INFO] [stdout] 154 +                     None
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/cmdline.rs:180:17
[INFO] [stdout]     |
[INFO] [stdout] 180 |                 return None;
[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] 180 -                 return None;
[INFO] [stdout] 180 +                 None
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/cmdline.rs:158:20
[INFO] [stdout]     |
[INFO] [stdout] 158 |                 if cmd.long.len() > 0 {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!cmd.long.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/cmdline.rs:169:20
[INFO] [stdout]     |
[INFO] [stdout] 169 |                 if cmd.short.len() > 0 {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!cmd.short.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: unused variable: `test`
[INFO] [stdout]    --> src/main.rs:115:9
[INFO] [stdout]     |
[INFO] [stdout] 115 |     let test = 1.2;
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `test2`
[INFO] [stdout]    --> src/main.rs:116:9
[INFO] [stdout]     |
[INFO] [stdout] 116 |     let test2: f64 = 3.4f64;
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_test2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `test3`
[INFO] [stdout]    --> src/main.rs:117:9
[INFO] [stdout]     |
[INFO] [stdout] 117 |     let test3 = 0b10101;
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_test3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `test4`
[INFO] [stdout]    --> src/main.rs:118:9
[INFO] [stdout]     |
[INFO] [stdout] 118 |     let test4 = 0xaBcdef;
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_test4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `test5`
[INFO] [stdout]    --> src/main.rs:119:9
[INFO] [stdout]     |
[INFO] [stdout] 119 |     let test5 = 01234567;
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_test5`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `OptVal` is never constructed
[INFO] [stdout]  --> src/cmdline.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum CmdValType {
[INFO] [stdout]   |          ---------- variant in this enum
[INFO] [stdout] 6 |     NoVal,
[INFO] [stdout] 7 |     OptVal,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `CmdValType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_value`, `get_value_by_name`, and `get_value_by_index` are never used
[INFO] [stdout]    --> src/cmdline.rs:337:12
[INFO] [stdout]     |
[INFO] [stdout]  42 | impl CmdLine {
[INFO] [stdout]     | ------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 337 |     pub fn get_value(&self, cmd: &CmdInfo) -> Option<&Vec<String>> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 345 |     pub fn get_value_by_name(&self, str: &str) -> Option<&Vec<String>> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 355 |     pub fn get_value_by_index(&self, index: usize) -> Option<&Vec<String>> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `KVoid`, `KChar`, `KInt`, `KFloat`, and `Kdouble` are never constructed
[INFO] [stdout]   --> src/lex.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout]  6 | pub enum KeyWordType {
[INFO] [stdout]    |          ----------- variants in this enum
[INFO] [stdout]  7 |     KVoid,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]  8 |     KChar,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]  9 |     KInt,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 10 |     KFloat,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 11 |     Kdouble,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `KeyWordType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `OpAssign` is never constructed
[INFO] [stdout]   --> src/lex.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub enum OperatorType {
[INFO] [stdout]    |          ------------ variant in this enum
[INFO] [stdout] 16 |     OpEq,
[INFO] [stdout] 17 |     OpAssign,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `OperatorType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/lex.rs:31:14
[INFO] [stdout]    |
[INFO] [stdout] 31 |     Operator(OperatorType),
[INFO] [stdout]    |     -------- ^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 31 -     Operator(OperatorType),
[INFO] [stdout] 31 +     Operator(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `KeyWord` and `FlotNumber` are never constructed
[INFO] [stdout]   --> src/lex.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub enum TokenType {
[INFO] [stdout]    |          --------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 25 |     KeyWord(KeyWordType),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 26 |     Number,
[INFO] [stdout] 27 |     FlotNumber,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `add_token` and `parse_keyword` are never used
[INFO] [stdout]    --> src/lex.rs:82:12
[INFO] [stdout]     |
[INFO] [stdout]  70 | impl Lex {
[INFO] [stdout]     | -------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  82 |     pub fn add_token(&mut self, loc: Location, token_type: TokenType, source: &str) {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 400 |     fn parse_keyword(&mut self, bytes: &[u8]) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/cmdline.rs:230:40
[INFO] [stdout]     |
[INFO] [stdout] 230 | ...                   if value.len() > 0 {
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!value.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/cmdline.rs:236:40
[INFO] [stdout]     |
[INFO] [stdout] 236 | ...                   if value.len() > 0 {
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!value.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/cmdline.rs:317:20
[INFO] [stdout]     |
[INFO] [stdout] 317 |                 if self.info[index].short.len() > 0 {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!self.info[index].short.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/cmdline.rs:334:9
[INFO] [stdout]     |
[INFO] [stdout] 334 |         return false;
[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] 334 -         return false;
[INFO] [stdout] 334 +         false
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant pattern matching, consider using `is_some()`
[INFO] [stdout]    --> src/cmdline.rs:329:20
[INFO] [stdout]     |
[INFO] [stdout] 329 |             if let Some(_) = self.args.get(&index) {
[INFO] [stdout]     |             -------^^^^^^^------------------------ help: try: `if self.args.get(&index).is_some()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stdout]     = note: `#[warn(clippy::redundant_pattern_matching)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/cmdline.rs:342:9
[INFO] [stdout]     |
[INFO] [stdout] 342 |         return None;
[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] 342 -         return None;
[INFO] [stdout] 342 +         None
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/cmdline.rs:352:9
[INFO] [stdout]     |
[INFO] [stdout] 352 |         return None;
[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] 352 -         return None;
[INFO] [stdout] 352 +         None
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/cmdline.rs:360:9
[INFO] [stdout]     |
[INFO] [stdout] 360 |         return None;
[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] 360 -         return None;
[INFO] [stdout] 360 +         None
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/cmdline.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |         return cmdline;
[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] 50 -         return cmdline;
[INFO] [stdout] 50 +         cmdline
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/cmdline.rs:66:25
[INFO] [stdout]    |
[INFO] [stdout] 66 |             val_str: if val_str.len() == 0 {
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `val_str.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/cmdline.rs:74:13
[INFO] [stdout]    |
[INFO] [stdout] 74 |         if (short.len() == 0) && (long.len() == 0) {
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `short.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/cmdline.rs:74:35
[INFO] [stdout]    |
[INFO] [stdout] 74 |         if (short.len() == 0) && (long.len() == 0) {
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `long.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/cmdline.rs:78:12
[INFO] [stdout]    |
[INFO] [stdout] 78 |         if help.len() == 0 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `help.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/cmdline.rs:132:9
[INFO] [stdout]     |
[INFO] [stdout] 132 |         return help;
[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] 132 -         return help;
[INFO] [stdout] 132 +         help
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/cmdline.rs:98:16
[INFO] [stdout]    |
[INFO] [stdout] 98 |             if cmd.short.len() > 0 {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!cmd.short.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/cmdline.rs:100:20
[INFO] [stdout]     |
[INFO] [stdout] 100 |                 if cmd.long.len() > 0 {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!cmd.long.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: returning the result of a `let` binding from a block
[INFO] [stdout]   --> src/lex.rs:79:9
[INFO] [stdout]    |
[INFO] [stdout] 72 | /         let lex = Lex {
[INFO] [stdout] 73 | |             file: String::from(file),
[INFO] [stdout] 74 | |             tokens: Vec::<Token>::new(),
[INFO] [stdout] 75 | |             index: 0,
[INFO] [stdout] 76 | |             line: 1,
[INFO] [stdout] 77 | |             column: 1,
[INFO] [stdout] 78 | |         };
[INFO] [stdout]    | |__________- unnecessary `let` binding
[INFO] [stdout] 79 |           lex
[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] 72 ~         
[INFO] [stdout] 73 ~         Lex {
[INFO] [stdout] 74 +             file: String::from(file),
[INFO] [stdout] 75 +             tokens: Vec::<Token>::new(),
[INFO] [stdout] 76 +             index: 0,
[INFO] [stdout] 77 +             line: 1,
[INFO] [stdout] 78 +             column: 1,
[INFO] [stdout] 79 +         }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> src/lex.rs:98:29
[INFO] [stdout]    |
[INFO] [stdout] 98 |                 _ => str += &format!("{}\n", token.show()).as_str(),
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: change this to: `format!("{}\n", token.show()).as_str()`
[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: unneeded `return` statement
[INFO] [stdout]    --> src/cmdline.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |         return None;
[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] 142 -         return None;
[INFO] [stdout] 142 +         None
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/cmdline.rs:152:21
[INFO] [stdout]     |
[INFO] [stdout] 152 |                     return Some(CmdMatchType::Long);
[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] 152 -                     return Some(CmdMatchType::Long);
[INFO] [stdout] 152 +                     Some(CmdMatchType::Long)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/cmdline.rs:154:21
[INFO] [stdout]     |
[INFO] [stdout] 154 |                     return None;
[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] 154 -                     return None;
[INFO] [stdout] 154 +                     None
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/cmdline.rs:180:17
[INFO] [stdout]     |
[INFO] [stdout] 180 |                 return None;
[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] 180 -                 return None;
[INFO] [stdout] 180 +                 None
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/cmdline.rs:158:20
[INFO] [stdout]     |
[INFO] [stdout] 158 |                 if cmd.long.len() > 0 {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!cmd.long.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/cmdline.rs:169:20
[INFO] [stdout]     |
[INFO] [stdout] 169 |                 if cmd.short.len() > 0 {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!cmd.short.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: the borrowed expression implements the required traits
[INFO] [stdout]    --> src/lex.rs:108:41
[INFO] [stdout]     |
[INFO] [stdout] 108 |         let mut file = match File::open(&path) {
[INFO] [stdout]     |                                         ^^^^^ help: change this to: `path`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrows_for_generic_args
[INFO] [stdout]     = note: `#[warn(clippy::needless_borrows_for_generic_args)]` on by default
[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/lex.rs:117:9
[INFO] [stdout]     |
[INFO] [stdout] 117 | /         match file.read_to_string(&mut src) {
[INFO] [stdout] 118 | |             Err(why) => {
[INFO] [stdout] 119 | |                 eprintln!("couldn't read {}: {:?}", &self.file, why);
[INFO] [stdout] 120 | |                 std::process::exit(-1);
[INFO] [stdout] 121 | |             },
[INFO] [stdout] 122 | |             Ok(_) => (),
[INFO] [stdout] 123 | |         };
[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] 117 ~         if let Err(why) = file.read_to_string(&mut src) {
[INFO] [stdout] 118 +             eprintln!("couldn't read {}: {:?}", &self.file, why);
[INFO] [stdout] 119 +             std::process::exit(-1);
[INFO] [stdout] 120 ~         };
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `to_vec`
[INFO] [stdout]    --> src/lex.rs:191:57
[INFO] [stdout]     |
[INFO] [stdout] 191 |                         source: String::from_utf8_lossy(&bytes[start..self.index].to_vec()).to_string(),
[INFO] [stdout]     |                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `&bytes[start..self.index]`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_to_owned
[INFO] [stdout]     = note: `#[warn(clippy::unnecessary_to_owned)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `to_vec`
[INFO] [stdout]    --> src/lex.rs:223:57
[INFO] [stdout]     |
[INFO] [stdout] 223 |                         source: String::from_utf8_lossy(&bytes[start..self.index].to_vec()).to_string(),
[INFO] [stdout]     |                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `&bytes[start..self.index]`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_to_owned
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/lex.rs:241:12
[INFO] [stdout]     |
[INFO] [stdout] 241 |         if !(bytes[self.index] as char == '\n') {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(bytes[self.index] as char != '\n')`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]     = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/lex.rs:262:12
[INFO] [stdout]     |
[INFO] [stdout] 262 |         if !(bytes[self.index] as char == ' ') {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(bytes[self.index] as char != ' ')`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/cmdline.rs:230:40
[INFO] [stdout]     |
[INFO] [stdout] 230 | ...                   if value.len() > 0 {
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!value.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/cmdline.rs:236:40
[INFO] [stdout]     |
[INFO] [stdout] 236 | ...                   if value.len() > 0 {
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!value.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/lex.rs:282:12
[INFO] [stdout]     |
[INFO] [stdout] 282 |         if !(bytes[self.index] as char == '\"') {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(bytes[self.index] as char != '\"')`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `to_vec`
[INFO] [stdout]    --> src/lex.rs:311:61
[INFO] [stdout]     |
[INFO] [stdout] 311 | ...                   source: String::from_utf8_lossy(&bytes[start..self.index].to_vec()).to_string(),
[INFO] [stdout]     |                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `&bytes[start..self.index]`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_to_owned
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/cmdline.rs:317:20
[INFO] [stdout]     |
[INFO] [stdout] 317 |                 if self.info[index].short.len() > 0 {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!self.info[index].short.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/lex.rs:338:12
[INFO] [stdout]     |
[INFO] [stdout] 338 |         if !(bytes[self.index] as char == '\'') {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(bytes[self.index] as char != '\'')`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/cmdline.rs:334:9
[INFO] [stdout]     |
[INFO] [stdout] 334 |         return false;
[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] 334 -         return false;
[INFO] [stdout] 334 +         false
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant pattern matching, consider using `is_some()`
[INFO] [stdout]    --> src/cmdline.rs:329:20
[INFO] [stdout]     |
[INFO] [stdout] 329 |             if let Some(_) = self.args.get(&index) {
[INFO] [stdout]     |             -------^^^^^^^------------------------ help: try: `if self.args.get(&index).is_some()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stdout]     = note: `#[warn(clippy::redundant_pattern_matching)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/cmdline.rs:342:9
[INFO] [stdout]     |
[INFO] [stdout] 342 |         return None;
[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] 342 -         return None;
[INFO] [stdout] 342 +         None
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/cmdline.rs:352:9
[INFO] [stdout]     |
[INFO] [stdout] 352 |         return None;
[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] 352 -         return None;
[INFO] [stdout] 352 +         None
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/cmdline.rs:360:9
[INFO] [stdout]     |
[INFO] [stdout] 360 |         return None;
[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] 360 -         return None;
[INFO] [stdout] 360 +         None
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `to_vec`
[INFO] [stdout]    --> src/lex.rs:372:61
[INFO] [stdout]     |
[INFO] [stdout] 372 | ...                   source: String::from_utf8_lossy(&bytes[start..self.index].to_vec()).to_string(),
[INFO] [stdout]     |                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `&bytes[start..self.index]`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_to_owned
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `to_vec`
[INFO] [stdout]    --> src/lex.rs:423:53
[INFO] [stdout]     |
[INFO] [stdout] 423 |                     source: String::from_utf8_lossy(&bytes[start..index].to_vec()).to_string(),
[INFO] [stdout]     |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `&bytes[start..index]`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_to_owned
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `to_vec`
[INFO] [stdout]    --> src/lex.rs:443:61
[INFO] [stdout]     |
[INFO] [stdout] 443 | ...                   source: String::from_utf8_lossy(&bytes[start..index].to_vec()).to_string(),
[INFO] [stdout]     |                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `&bytes[start..index]`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_to_owned
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/lex.rs:482:9
[INFO] [stdout]     |
[INFO] [stdout] 482 |         return true;
[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] 482 -         return true;
[INFO] [stdout] 482 +         true
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `to_vec`
[INFO] [stdout]    --> src/lex.rs:476:45
[INFO] [stdout]     |
[INFO] [stdout] 476 |             source: String::from_utf8_lossy(&bytes[self.index..(self.index + 1)].to_vec()).to_string(),
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `&bytes[self.index..(self.index + 1)]`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_to_owned
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: returning the result of a `let` binding from a block
[INFO] [stdout]   --> src/lex.rs:79:9
[INFO] [stdout]    |
[INFO] [stdout] 72 | /         let lex = Lex {
[INFO] [stdout] 73 | |             file: String::from(file),
[INFO] [stdout] 74 | |             tokens: Vec::<Token>::new(),
[INFO] [stdout] 75 | |             index: 0,
[INFO] [stdout] 76 | |             line: 1,
[INFO] [stdout] 77 | |             column: 1,
[INFO] [stdout] 78 | |         };
[INFO] [stdout]    | |__________- unnecessary `let` binding
[INFO] [stdout] 79 |           lex
[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] 72 ~         
[INFO] [stdout] 73 ~         Lex {
[INFO] [stdout] 74 +             file: String::from(file),
[INFO] [stdout] 75 +             tokens: Vec::<Token>::new(),
[INFO] [stdout] 76 +             index: 0,
[INFO] [stdout] 77 +             line: 1,
[INFO] [stdout] 78 +             column: 1,
[INFO] [stdout] 79 +         }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `to_vec`
[INFO] [stdout]    --> src/lex.rs:516:57
[INFO] [stdout]     |
[INFO] [stdout] 516 |                         source: String::from_utf8_lossy(&bytes[start..index].to_vec()).to_string(),
[INFO] [stdout]     |                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `&bytes[start..index]`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_to_owned
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> src/lex.rs:98:29
[INFO] [stdout]    |
[INFO] [stdout] 98 |                 _ => str += &format!("{}\n", token.show()).as_str(),
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: change this to: `format!("{}\n", token.show()).as_str()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout]    = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the borrowed expression implements the required traits
[INFO] [stdout]    --> src/lex.rs:108:41
[INFO] [stdout]     |
[INFO] [stdout] 108 |         let mut file = match File::open(&path) {
[INFO] [stdout]     |                                         ^^^^^ help: change this to: `path`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrows_for_generic_args
[INFO] [stdout]     = note: `#[warn(clippy::needless_borrows_for_generic_args)]` on by default
[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/lex.rs:117:9
[INFO] [stdout]     |
[INFO] [stdout] 117 | /         match file.read_to_string(&mut src) {
[INFO] [stdout] 118 | |             Err(why) => {
[INFO] [stdout] 119 | |                 eprintln!("couldn't read {}: {:?}", &self.file, why);
[INFO] [stdout] 120 | |                 std::process::exit(-1);
[INFO] [stdout] 121 | |             },
[INFO] [stdout] 122 | |             Ok(_) => (),
[INFO] [stdout] 123 | |         };
[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] 117 ~         if let Err(why) = file.read_to_string(&mut src) {
[INFO] [stdout] 118 +             eprintln!("couldn't read {}: {:?}", &self.file, why);
[INFO] [stdout] 119 +             std::process::exit(-1);
[INFO] [stdout] 120 ~         };
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `to_vec`
[INFO] [stdout]    --> src/lex.rs:191:57
[INFO] [stdout]     |
[INFO] [stdout] 191 |                         source: String::from_utf8_lossy(&bytes[start..self.index].to_vec()).to_string(),
[INFO] [stdout]     |                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `&bytes[start..self.index]`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_to_owned
[INFO] [stdout]     = note: `#[warn(clippy::unnecessary_to_owned)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `to_vec`
[INFO] [stdout]    --> src/lex.rs:223:57
[INFO] [stdout]     |
[INFO] [stdout] 223 |                         source: String::from_utf8_lossy(&bytes[start..self.index].to_vec()).to_string(),
[INFO] [stdout]     |                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `&bytes[start..self.index]`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_to_owned
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/lex.rs:241:12
[INFO] [stdout]     |
[INFO] [stdout] 241 |         if !(bytes[self.index] as char == '\n') {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(bytes[self.index] as char != '\n')`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]     = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `to_vec`
[INFO] [stdout]    --> src/lex.rs:652:61
[INFO] [stdout]     |
[INFO] [stdout] 652 | ...                   source: String::from_utf8_lossy(&bytes[start..index].to_vec()).to_string(),
[INFO] [stdout]     |                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `&bytes[start..index]`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_to_owned
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `if` statement can be collapsed
[INFO] [stdout]    --> src/lex.rs:662:21
[INFO] [stdout]     |
[INFO] [stdout] 662 | /                     if !err_token {
[INFO] [stdout] 663 | |                         if !hex_num {
[INFO] [stdout] 664 | |                             if index != start && (bytes[index - 1] as char).is_ascii_digit() {
[INFO] [stdout] 665 | |                                 if f_flag {
[INFO] [stdout] ...   |
[INFO] [stdout] 686 | |                     }
[INFO] [stdout]     | |_____________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stdout]     = note: `#[warn(clippy::collapsible_if)]` on by default
[INFO] [stdout] help: collapse nested if block
[INFO] [stdout]     |
[INFO] [stdout] 662 ~                     if !err_token
[INFO] [stdout] 663 ~                         && !hex_num {
[INFO] [stdout] 664 |                             if index != start && (bytes[index - 1] as char).is_ascii_digit() {
[INFO] [stdout] ...
[INFO] [stdout] 684 |                             }
[INFO] [stdout] 685 ~                         }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/lex.rs:262:12
[INFO] [stdout]     |
[INFO] [stdout] 262 |         if !(bytes[self.index] as char == ' ') {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(bytes[self.index] as char != ' ')`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/lex.rs:282:12
[INFO] [stdout]     |
[INFO] [stdout] 282 |         if !(bytes[self.index] as char == '\"') {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(bytes[self.index] as char != '\"')`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `to_vec`
[INFO] [stdout]    --> src/lex.rs:311:61
[INFO] [stdout]     |
[INFO] [stdout] 311 | ...                   source: String::from_utf8_lossy(&bytes[start..self.index].to_vec()).to_string(),
[INFO] [stdout]     |                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `&bytes[start..self.index]`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_to_owned
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/lex.rs:338:12
[INFO] [stdout]     |
[INFO] [stdout] 338 |         if !(bytes[self.index] as char == '\'') {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(bytes[self.index] as char != '\'')`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: literal with an empty format string
[INFO] [stdout]    --> src/main.rs:128:13
[INFO] [stdout]     |
[INFO] [stdout] 128 |             "V0.1.0"
[INFO] [stdout]     |             ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stdout]     = note: `#[warn(clippy::print_literal)]` on by default
[INFO] [stdout] help: try
[INFO] [stdout]     |
[INFO] [stdout] 126 ~             "{}\n\nNcc compiler by Nick.Hu -- V0.1.0",
[INFO] [stdout] 127 ~             cmdline.help()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `to_vec`
[INFO] [stdout]    --> src/lex.rs:372:61
[INFO] [stdout]     |
[INFO] [stdout] 372 | ...                   source: String::from_utf8_lossy(&bytes[start..self.index].to_vec()).to_string(),
[INFO] [stdout]     |                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `&bytes[start..self.index]`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_to_owned
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: literal with an empty format string
[INFO] [stdout]    --> src/main.rs:134:51
[INFO] [stdout]     |
[INFO] [stdout] 134 |         println!("Ncc compiler by Nick.Hu -- {}", "V0.1.0");
[INFO] [stdout]     |                                                   ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stdout] help: try
[INFO] [stdout]     |
[INFO] [stdout] 134 -         println!("Ncc compiler by Nick.Hu -- {}", "V0.1.0");
[INFO] [stdout] 134 +         println!("Ncc compiler by Nick.Hu -- V0.1.0");
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/main.rs:138:8
[INFO] [stdout]     |
[INFO] [stdout] 138 |     if cmdline.others.len() == 0 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `cmdline.others.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: unnecessary use of `to_vec`
[INFO] [stdout]    --> src/lex.rs:423:53
[INFO] [stdout]     |
[INFO] [stdout] 423 |                     source: String::from_utf8_lossy(&bytes[start..index].to_vec()).to_string(),
[INFO] [stdout]     |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `&bytes[start..index]`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_to_owned
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `to_vec`
[INFO] [stdout]    --> src/lex.rs:443:61
[INFO] [stdout]     |
[INFO] [stdout] 443 | ...                   source: String::from_utf8_lossy(&bytes[start..index].to_vec()).to_string(),
[INFO] [stdout]     |                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `&bytes[start..index]`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_to_owned
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/lex.rs:482:9
[INFO] [stdout]     |
[INFO] [stdout] 482 |         return true;
[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] 482 -         return true;
[INFO] [stdout] 482 +         true
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `to_vec`
[INFO] [stdout]    --> src/lex.rs:476:45
[INFO] [stdout]     |
[INFO] [stdout] 476 |             source: String::from_utf8_lossy(&bytes[self.index..(self.index + 1)].to_vec()).to_string(),
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `&bytes[self.index..(self.index + 1)]`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_to_owned
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `to_vec`
[INFO] [stdout]    --> src/lex.rs:516:57
[INFO] [stdout]     |
[INFO] [stdout] 516 |                         source: String::from_utf8_lossy(&bytes[start..index].to_vec()).to_string(),
[INFO] [stdout]     |                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `&bytes[start..index]`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_to_owned
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `to_vec`
[INFO] [stdout]    --> src/lex.rs:652:61
[INFO] [stdout]     |
[INFO] [stdout] 652 | ...                   source: String::from_utf8_lossy(&bytes[start..index].to_vec()).to_string(),
[INFO] [stdout]     |                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `&bytes[start..index]`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_to_owned
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `if` statement can be collapsed
[INFO] [stdout]    --> src/lex.rs:662:21
[INFO] [stdout]     |
[INFO] [stdout] 662 | /                     if !err_token {
[INFO] [stdout] 663 | |                         if !hex_num {
[INFO] [stdout] 664 | |                             if index != start && (bytes[index - 1] as char).is_ascii_digit() {
[INFO] [stdout] 665 | |                                 if f_flag {
[INFO] [stdout] ...   |
[INFO] [stdout] 686 | |                     }
[INFO] [stdout]     | |_____________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stdout]     = note: `#[warn(clippy::collapsible_if)]` on by default
[INFO] [stdout] help: collapse nested if block
[INFO] [stdout]     |
[INFO] [stdout] 662 ~                     if !err_token
[INFO] [stdout] 663 ~                         && !hex_num {
[INFO] [stdout] 664 |                             if index != start && (bytes[index - 1] as char).is_ascii_digit() {
[INFO] [stdout] ...
[INFO] [stdout] 684 |                             }
[INFO] [stdout] 685 ~                         }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: literal with an empty format string
[INFO] [stdout]    --> src/main.rs:128:13
[INFO] [stdout]     |
[INFO] [stdout] 128 |             "V0.1.0"
[INFO] [stdout]     |             ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stdout]     = note: `#[warn(clippy::print_literal)]` on by default
[INFO] [stdout] help: try
[INFO] [stdout]     |
[INFO] [stdout] 126 ~             "{}\n\nNcc compiler by Nick.Hu -- V0.1.0",
[INFO] [stdout] 127 ~             cmdline.help()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: literal with an empty format string
[INFO] [stdout]    --> src/main.rs:134:51
[INFO] [stdout]     |
[INFO] [stdout] 134 |         println!("Ncc compiler by Nick.Hu -- {}", "V0.1.0");
[INFO] [stdout]     |                                                   ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stdout] help: try
[INFO] [stdout]     |
[INFO] [stdout] 134 -         println!("Ncc compiler by Nick.Hu -- {}", "V0.1.0");
[INFO] [stdout] 134 +         println!("Ncc compiler by Nick.Hu -- V0.1.0");
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/main.rs:138:8
[INFO] [stdout]     |
[INFO] [stdout] 138 |     if cmdline.others.len() == 0 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `cmdline.others.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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "2e58197457f18d8f1014e3cecbcd462f31c5e953fad23e3ab7d520d0ffdd8d27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e58197457f18d8f1014e3cecbcd462f31c5e953fad23e3ab7d520d0ffdd8d27", kill_on_drop: false }`
[INFO] [stdout] 2e58197457f18d8f1014e3cecbcd462f31c5e953fad23e3ab7d520d0ffdd8d27