[INFO] fetching crate PrintLib 1.5.2...
[INFO] linting PrintLib-1.5.2 against nightly for clippy-nonminimal_bool-denied
[INFO] extracting crate PrintLib 1.5.2 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate PrintLib 1.5.2
[INFO] finished tweaking crates.io crate PrintLib 1.5.2
[INFO] tweaked toml for crates.io crate PrintLib 1.5.2 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate PrintLib 1.5.2 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 31 packages to latest compatible versions
[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-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] d0789735995573749bdebe795fb86b9289deccc4423c301a99c0a15658742de3
[INFO] running `Command { std: "docker" "start" "-a" "d0789735995573749bdebe795fb86b9289deccc4423c301a99c0a15658742de3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d0789735995573749bdebe795fb86b9289deccc4423c301a99c0a15658742de3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0789735995573749bdebe795fb86b9289deccc4423c301a99c0a15658742de3", kill_on_drop: false }`
[INFO] [stdout] d0789735995573749bdebe795fb86b9289deccc4423c301a99c0a15658742de3
[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] df1fc76bb3a2f2819756828be2b65a6d0311733938b9ea13d04eb4eaec6aac5c
[INFO] running `Command { std: "docker" "start" "-a" "df1fc76bb3a2f2819756828be2b65a6d0311733938b9ea13d04eb4eaec6aac5c", kill_on_drop: false }`
[INFO] [stderr]     Checking PrintLib v1.5.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `clr_b` is never read
[INFO] [stdout]    --> src/colorize.rs:490:17
[INFO] [stdout]     |
[INFO] [stdout] 490 |                 clr_b = false;
[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 `clr_b` is never read
[INFO] [stdout]    --> src/colorize.rs:490:17
[INFO] [stdout]     |
[INFO] [stdout] 490 |                 clr_b = false;
[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: the following explicit lifetimes could be elided: 'a
[INFO] [stdout]   --> src/colorize.rs:44:6
[INFO] [stdout]    |
[INFO] [stdout] 44 | impl<'a> Colorize for &'a str {
[INFO] [stdout]    |      ^^                ^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
[INFO] [stdout]    = note: `#[warn(clippy::needless_lifetimes)]` on by default
[INFO] [stdout] help: elide the lifetimes
[INFO] [stdout]    |
[INFO] [stdout] 44 - impl<'a> Colorize for &'a str {
[INFO] [stdout] 44 + impl Colorize for &str {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the following explicit lifetimes could be elided: 'a
[INFO] [stdout]   --> src/colorize.rs:44:6
[INFO] [stdout]    |
[INFO] [stdout] 44 | impl<'a> Colorize for &'a str {
[INFO] [stdout]    |      ^^                ^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
[INFO] [stdout]    = note: `#[warn(clippy::needless_lifetimes)]` on by default
[INFO] [stdout] help: elide the lifetimes
[INFO] [stdout]    |
[INFO] [stdout] 44 - impl<'a> Colorize for &'a str {
[INFO] [stdout] 44 + impl Colorize for &str {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: direct implementation of `ToString`
[INFO] [stdout]    --> src/colorize.rs:417:1
[INFO] [stdout]     |
[INFO] [stdout] 417 | / impl ToString for ColoredString {
[INFO] [stdout] 418 | |     fn to_string(&self) -> String {
[INFO] [stdout] 419 | |         if self.r != -1 {
[INFO] [stdout] 420 | |             let rgb_str = format!(
[INFO] [stdout] ...   |
[INFO] [stdout] 460 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = help: prefer implementing `Display` instead
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#to_string_trait_impl
[INFO] [stdout]     = note: `#[warn(clippy::to_string_trait_impl)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: direct implementation of `ToString`
[INFO] [stdout]    --> src/colorize.rs:417:1
[INFO] [stdout]     |
[INFO] [stdout] 417 | / impl ToString for ColoredString {
[INFO] [stdout] 418 | |     fn to_string(&self) -> String {
[INFO] [stdout] 419 | |         if self.r != -1 {
[INFO] [stdout] 420 | |             let rgb_str = format!(
[INFO] [stdout] ...   |
[INFO] [stdout] 460 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = help: prefer implementing `Display` instead
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#to_string_trait_impl
[INFO] [stdout]     = note: `#[warn(clippy::to_string_trait_impl)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `to_string` applied to a type that implements `Display` in `format!` args
[INFO] [stdout]    --> src/colorize.rs:422:23
[INFO] [stdout]     |
[INFO] [stdout] 422 |                 self.r.to_string(),
[INFO] [stdout]     |                       ^^^^^^^^^^^^ help: remove this
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#to_string_in_format_args
[INFO] [stdout]     = note: `#[warn(clippy::to_string_in_format_args)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `to_string` applied to a type that implements `Display` in `format!` args
[INFO] [stdout]    --> src/colorize.rs:423:23
[INFO] [stdout]     |
[INFO] [stdout] 423 |                 self.g.to_string(),
[INFO] [stdout]     |                       ^^^^^^^^^^^^ help: remove this
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#to_string_in_format_args
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `to_string` applied to a type that implements `Display` in `format!` args
[INFO] [stdout]    --> src/colorize.rs:424:23
[INFO] [stdout]     |
[INFO] [stdout] 424 |                 self.b.to_string()
[INFO] [stdout]     |                       ^^^^^^^^^^^^ help: remove this
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#to_string_in_format_args
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `to_string` applied to a type that implements `Display` in `format!` args
[INFO] [stdout]    --> src/colorize.rs:422:23
[INFO] [stdout]     |
[INFO] [stdout] 422 |                 self.r.to_string(),
[INFO] [stdout]     |                       ^^^^^^^^^^^^ help: remove this
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#to_string_in_format_args
[INFO] [stdout]     = note: `#[warn(clippy::to_string_in_format_args)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `to_string` applied to a type that implements `Display` in `format!` args
[INFO] [stdout]    --> src/colorize.rs:423:23
[INFO] [stdout]     |
[INFO] [stdout] 423 |                 self.g.to_string(),
[INFO] [stdout]     |                       ^^^^^^^^^^^^ help: remove this
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#to_string_in_format_args
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `to_string` applied to a type that implements `Display` in `format!` args
[INFO] [stdout]    --> src/colorize.rs:424:23
[INFO] [stdout]     |
[INFO] [stdout] 424 |                 self.b.to_string()
[INFO] [stdout]     |                       ^^^^^^^^^^^^ help: remove this
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#to_string_in_format_args
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless use of `format!`
[INFO] [stdout]    --> src/colorize.rs:433:27
[INFO] [stdout]     |
[INFO] [stdout] 433 |             let rgb_str = format!("\x1b[1m");
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^ help: consider using `.to_string()`: `"\x1b[1m".to_string()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stdout]     = note: `#[warn(clippy::useless_format)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless use of `format!`
[INFO] [stdout]    --> src/colorize.rs:437:27
[INFO] [stdout]     |
[INFO] [stdout] 437 |             let rgb_str = format!("\x1b[3m");
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^ help: consider using `.to_string()`: `"\x1b[3m".to_string()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless use of `format!`
[INFO] [stdout]    --> src/colorize.rs:441:27
[INFO] [stdout]     |
[INFO] [stdout] 441 |             let rgb_str = format!("\x1b[4m");
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^ help: consider using `.to_string()`: `"\x1b[4m".to_string()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless use of `format!`
[INFO] [stdout]    --> src/colorize.rs:445:27
[INFO] [stdout]     |
[INFO] [stdout] 445 |             let rgb_str = format!("\x1b[9m");
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^ help: consider using `.to_string()`: `"\x1b[9m".to_string()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless use of `format!`
[INFO] [stdout]    --> src/colorize.rs:433:27
[INFO] [stdout]     |
[INFO] [stdout] 433 |             let rgb_str = format!("\x1b[1m");
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^ help: consider using `.to_string()`: `"\x1b[1m".to_string()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stdout]     = note: `#[warn(clippy::useless_format)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless use of `format!`
[INFO] [stdout]    --> src/colorize.rs:437:27
[INFO] [stdout]     |
[INFO] [stdout] 437 |             let rgb_str = format!("\x1b[3m");
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^ help: consider using `.to_string()`: `"\x1b[3m".to_string()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless use of `format!`
[INFO] [stdout]    --> src/colorize.rs:441:27
[INFO] [stdout]     |
[INFO] [stdout] 441 |             let rgb_str = format!("\x1b[4m");
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^ help: consider using `.to_string()`: `"\x1b[4m".to_string()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless use of `format!`
[INFO] [stdout]    --> src/colorize.rs:445:27
[INFO] [stdout]     |
[INFO] [stdout] 445 |             let rgb_str = format!("\x1b[9m");
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^ help: consider using `.to_string()`: `"\x1b[9m".to_string()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `to_string` applied to a type that implements `Display` in `format!` args
[INFO] [stdout]    --> src/colorize.rs:451:31
[INFO] [stdout]     |
[INFO] [stdout] 451 |                 self.attr.bg_r.to_string(),
[INFO] [stdout]     |                               ^^^^^^^^^^^^ help: remove this
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#to_string_in_format_args
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `to_string` applied to a type that implements `Display` in `format!` args
[INFO] [stdout]    --> src/colorize.rs:451:31
[INFO] [stdout]     |
[INFO] [stdout] 451 |                 self.attr.bg_r.to_string(),
[INFO] [stdout]     |                               ^^^^^^^^^^^^ help: remove this
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#to_string_in_format_args
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `to_string` applied to a type that implements `Display` in `format!` args
[INFO] [stdout]    --> src/colorize.rs:452:31
[INFO] [stdout]     |
[INFO] [stdout] 452 |                 self.attr.bg_g.to_string(),
[INFO] [stdout]     |                               ^^^^^^^^^^^^ help: remove this
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#to_string_in_format_args
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `to_string` applied to a type that implements `Display` in `format!` args
[INFO] [stdout]    --> src/colorize.rs:453:31
[INFO] [stdout]     |
[INFO] [stdout] 453 |                 self.attr.bg_b.to_string(),);
[INFO] [stdout]     |                               ^^^^^^^^^^^^ help: remove this
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#to_string_in_format_args
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `to_string` applied to a type that implements `Display` in `format!` args
[INFO] [stdout]    --> src/colorize.rs:452:31
[INFO] [stdout]     |
[INFO] [stdout] 452 |                 self.attr.bg_g.to_string(),
[INFO] [stdout]     |                               ^^^^^^^^^^^^ help: remove this
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#to_string_in_format_args
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `to_string` applied to a type that implements `Display` in `format!` args
[INFO] [stdout]    --> src/colorize.rs:453:31
[INFO] [stdout]     |
[INFO] [stdout] 453 |                 self.attr.bg_b.to_string(),);
[INFO] [stdout]     |                               ^^^^^^^^^^^^ help: remove this
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#to_string_in_format_args
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/colorize.rs:513:16
[INFO] [stdout]     |
[INFO] [stdout] 513 |             if !r.is_none() { _r = r.unwrap(); } else {
[INFO] [stdout]     |                ^^^^^^^^^^^^ help: try: `r.is_some()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]     = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/colorize.rs:515:16
[INFO] [stdout]     |
[INFO] [stdout] 515 |             if !r.is_none() { _g = g.unwrap(); } else {
[INFO] [stdout]     |                ^^^^^^^^^^^^ help: try: `r.is_some()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/colorize.rs:517:16
[INFO] [stdout]     |
[INFO] [stdout] 517 |             if !r.is_none() { _b = b.unwrap(); } else {
[INFO] [stdout]     |                ^^^^^^^^^^^^ help: try: `r.is_some()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: called `unwrap` on `r` after checking its variant with `is_none`
[INFO] [stdout]    --> src/colorize.rs:513:36
[INFO] [stdout]     |
[INFO] [stdout] 513 |             if !r.is_none() { _r = r.unwrap(); } else {
[INFO] [stdout]     |                 -----------        ^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 the check is happening here
[INFO] [stdout]     |
[INFO] [stdout]     = help: try using `match`
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_unwrap
[INFO] [stdout]     = note: `#[warn(clippy::unnecessary_unwrap)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/colorize.rs:513:16
[INFO] [stdout]     |
[INFO] [stdout] 513 |             if !r.is_none() { _r = r.unwrap(); } else {
[INFO] [stdout]     |                ^^^^^^^^^^^^ help: try: `r.is_some()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]     = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/colorize.rs:515:16
[INFO] [stdout]     |
[INFO] [stdout] 515 |             if !r.is_none() { _g = g.unwrap(); } else {
[INFO] [stdout]     |                ^^^^^^^^^^^^ help: try: `r.is_some()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/colorize.rs:517:16
[INFO] [stdout]     |
[INFO] [stdout] 517 |             if !r.is_none() { _b = b.unwrap(); } else {
[INFO] [stdout]     |                ^^^^^^^^^^^^ help: try: `r.is_some()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: called `unwrap` on `r` after checking its variant with `is_none`
[INFO] [stdout]    --> src/colorize.rs:513:36
[INFO] [stdout]     |
[INFO] [stdout] 513 |             if !r.is_none() { _r = r.unwrap(); } else {
[INFO] [stdout]     |                 -----------        ^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 the check is happening here
[INFO] [stdout]     |
[INFO] [stdout]     = help: try using `match`
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_unwrap
[INFO] [stdout]     = note: `#[warn(clippy::unnecessary_unwrap)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: literal with an empty format string
[INFO] [stdout]    --> src/colorize.rs:514:52
[INFO] [stdout]     |
[INFO] [stdout] 514 |                 println!("{} {}", "Error: ".red(), "red color channel in encoded color string is null"); }
[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] 514 -                 println!("{} {}", "Error: ".red(), "red color channel in encoded color string is null"); }
[INFO] [stdout] 514 +                 println!("{} red color channel in encoded color string is null", "Error: ".red()); }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: literal with an empty format string
[INFO] [stdout]    --> src/colorize.rs:514:52
[INFO] [stdout]     |
[INFO] [stdout] 514 |                 println!("{} {}", "Error: ".red(), "red color channel in encoded color string is null"); }
[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] 514 -                 println!("{} {}", "Error: ".red(), "red color channel in encoded color string is null"); }
[INFO] [stdout] 514 +                 println!("{} red color channel in encoded color string is null", "Error: ".red()); }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: literal with an empty format string
[INFO] [stdout]    --> src/colorize.rs:516:52
[INFO] [stdout]     |
[INFO] [stdout] 516 |                 println!("{} {}", "Error: ".red(), "green color channel in encoded color string is null"); }
[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] 516 -                 println!("{} {}", "Error: ".red(), "green color channel in encoded color string is null"); }
[INFO] [stdout] 516 +                 println!("{} green color channel in encoded color string is null", "Error: ".red()); }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: literal with an empty format string
[INFO] [stdout]    --> src/colorize.rs:516:52
[INFO] [stdout]     |
[INFO] [stdout] 516 |                 println!("{} {}", "Error: ".red(), "green color channel in encoded color string is null"); }
[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] 516 -                 println!("{} {}", "Error: ".red(), "green color channel in encoded color string is null"); }
[INFO] [stdout] 516 +                 println!("{} green color channel in encoded color string is null", "Error: ".red()); }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: literal with an empty format string
[INFO] [stdout]    --> src/colorize.rs:518:52
[INFO] [stdout]     |
[INFO] [stdout] 518 |                 println!("{} {}", "Error: ".red(), "blue color channel in encoded color string is null"); }
[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] 518 -                 println!("{} {}", "Error: ".red(), "blue color channel in encoded color string is null"); }
[INFO] [stdout] 518 +                 println!("{} blue color channel in encoded color string is null", "Error: ".red()); }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: literal with an empty format string
[INFO] [stdout]    --> src/colorize.rs:518:52
[INFO] [stdout]     |
[INFO] [stdout] 518 |                 println!("{} {}", "Error: ".red(), "blue color channel in encoded color string is null"); }
[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] 518 -                 println!("{} {}", "Error: ".red(), "blue color channel in encoded color string is null"); }
[INFO] [stdout] 518 +                 println!("{} blue color channel in encoded color string is null", "Error: ".red()); }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you should consider adding a `Default` implementation for `EmojiMaker`
[INFO] [stdout]   --> src/emoji.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout]  8 | /     pub fn new() -> Self {
[INFO] [stdout]  9 | |         Self {
[INFO] [stdout] 10 | |             emojis: HashMap::new()
[INFO] [stdout] 11 | |         }
[INFO] [stdout] 12 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default
[INFO] [stdout]    = note: `#[warn(clippy::new_without_default)]` on by default
[INFO] [stdout] help: try adding this
[INFO] [stdout]    |
[INFO] [stdout]  7 + impl Default for EmojiMaker {
[INFO] [stdout]  8 +     fn default() -> Self {
[INFO] [stdout]  9 +         Self::new()
[INFO] [stdout] 10 +     }
[INFO] [stdout] 11 + }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you should consider adding a `Default` implementation for `EmojiMaker`
[INFO] [stdout]   --> src/emoji.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout]  8 | /     pub fn new() -> Self {
[INFO] [stdout]  9 | |         Self {
[INFO] [stdout] 10 | |             emojis: HashMap::new()
[INFO] [stdout] 11 | |         }
[INFO] [stdout] 12 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default
[INFO] [stdout]    = note: `#[warn(clippy::new_without_default)]` on by default
[INFO] [stdout] help: try adding this
[INFO] [stdout]    |
[INFO] [stdout]  7 + impl Default for EmojiMaker {
[INFO] [stdout]  8 +     fn default() -> Self {
[INFO] [stdout]  9 +         Self::new()
[INFO] [stdout] 10 +     }
[INFO] [stdout] 11 + }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless conversion to the same type: `std::option::Option<std::string::String>`
[INFO] [stdout]   --> src/emoji.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |             Option::from(None)
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^ help: consider removing `Option::from()`: `None`
[INFO] [stdout]    |
[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: useless conversion to the same type: `std::option::Option<std::string::String>`
[INFO] [stdout]   --> src/emoji.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |             Option::from(None)
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^ help: consider removing `Option::from()`: `None`
[INFO] [stdout]    |
[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: literal with an empty format string
[INFO] [stdout]   --> src/arg.rs:41:24
[INFO] [stdout]    |
[INFO] [stdout] 41 |         println!("{}", "Options:");
[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] 41 -         println!("{}", "Options:");
[INFO] [stdout] 41 +         println!("Options:");
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: literal with an empty format string
[INFO] [stdout]   --> src/arg.rs:46:24
[INFO] [stdout]    |
[INFO] [stdout] 46 |         println!("{}", "Common commands:");
[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] 46 -         println!("{}", "Common commands:");
[INFO] [stdout] 46 +         println!("Common commands:");
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: literal with an empty format string
[INFO] [stdout]   --> src/arg.rs:41:24
[INFO] [stdout]    |
[INFO] [stdout] 41 |         println!("{}", "Options:");
[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] 41 -         println!("{}", "Options:");
[INFO] [stdout] 41 +         println!("Options:");
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: literal with an empty format string
[INFO] [stdout]   --> src/arg.rs:46:24
[INFO] [stdout]    |
[INFO] [stdout] 46 |         println!("{}", "Common commands:");
[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] 46 -         println!("{}", "Common commands:");
[INFO] [stdout] 46 +         println!("Common commands:");
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `PrintLib` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `print_lib`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "df1fc76bb3a2f2819756828be2b65a6d0311733938b9ea13d04eb4eaec6aac5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df1fc76bb3a2f2819756828be2b65a6d0311733938b9ea13d04eb4eaec6aac5c", kill_on_drop: false }`
[INFO] [stdout] df1fc76bb3a2f2819756828be2b65a6d0311733938b9ea13d04eb4eaec6aac5c