build: bump MSRV to 1.65.0 (#171)

The latest version of the time crate requires Rust 1.65.0

```
cargo +1.64.0-x86_64-apple-darwin test --no-default-features \
  --features serde,crossterm,all-widgets --lib --tests --examples
error: package `time v0.3.21` cannot be built because it requires rustc
1.65.0 or newer, while the currently active rustc version is 1.64.0
```

Also fixes several clippy warnings added in 1.63/1.65. Although these
have been since moved to nursery / pedantic, it doesn't hurt to fix
these issues as part of this change:

- https://rust-lang.github.io/rust-clippy/master/index.html#derive_partial_eq_without_eq (nursery)
- https://rust-lang.github.io/rust-clippy/master/index.html#bool_to_int_with_if (pedantic)

.github/workflows/ci.yml

@@ -16,7 +16,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        rust: ["1.59.0", "stable"]
+        rust: ["1.65.0", "stable"]
         include:
           - os: ubuntu-latest
             triple: x86_64-unknown-linux-musl

Cargo.toml

@@ -13,7 +13,7 @@ license = "MIT"
 exclude = ["assets/*", ".github", "Makefile.toml", "CONTRIBUTING.md", "*.log", "tags"]
 autoexamples = true
 edition = "2021"
-rust-version = "1.59.0"
+rust-version = "1.65.0"
 
 [badges]
 

README.md

@@ -51,7 +51,7 @@ you may rely on the previously cited libraries to achieve such features.
 
 ## Rust version requirements
 
-Since version 0.17.0, `ratatui` requires **rustc version 1.59.0 or greater**.
+Since version 0.21.0, `ratatui` requires **rustc version 1.65.0 or greater**.
 
 # Documentation
 

src/backend/mod.rs

@@ -16,7 +16,7 @@ pub use self::crossterm::CrosstermBackend;
 mod test;
 pub use self::test::TestBackend;
 
-#[derive(Debug, Clone, Copy, PartialEq)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub enum ClearType {
     All,
     AfterCursor,

src/terminal.rs

@@ -6,14 +6,14 @@ use crate::{
 };
 use std::io;
 
-#[derive(Debug, Clone, PartialEq)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub enum Viewport {
     Fullscreen,
     Inline(u16),
     Fixed(Rect),
 }
 
-#[derive(Debug, Clone, PartialEq)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 /// Options to pass to [`Terminal::with_options`]
 pub struct TerminalOptions {
     /// Viewport used to draw to the terminal

src/widgets/block.rs

@@ -313,17 +313,8 @@ impl<'a> Widget for Block<'a> {
 
         // Title
         if let Some(title) = self.title {
-            let left_border_dx = if self.borders.intersects(Borders::LEFT) {
-                1
-            } else {
-                0
-            };
-
-            let right_border_dx = if self.borders.intersects(Borders::RIGHT) {
-                1
-            } else {
-                0
-            };
+            let left_border_dx = self.borders.intersects(Borders::LEFT) as u16;
+            let right_border_dx = self.borders.intersects(Borders::RIGHT) as u16;
 
             let title_area_width = area
                 .width

src/widgets/chart.rs

@@ -366,7 +366,7 @@ impl<'a> Chart<'a> {
             let width_left_of_y_axis = match self.x_axis.labels_alignment {
                 Alignment::Left => {
                     // The last character of the label should be below the Y-Axis when it exists, not on its left
-                    let y_axis_offset = if has_y_axis { 1 } else { 0 };
+                    let y_axis_offset = has_y_axis as u16;
                     first_label_width.saturating_sub(y_axis_offset)
                 }
                 Alignment::Center => first_label_width / 2,