bump MSRV to 1.63 (#2129)

.github/workflows/pipeline.yml

@@ -11,7 +11,7 @@ jobs:
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: "1.56.0"
+          toolchain: "1.63.0"
           override: true
       - uses: taiki-e/install-action@cargo-hack
       - uses: taiki-e/install-action@cargo-minimal-versions

Cargo.toml

@@ -10,7 +10,7 @@ keywords = ["shader", "SPIR-V", "GLSL", "MSL"]
 license = "MIT OR Apache-2.0"
 exclude = ["bin/**/*", "tests/**/*", "Cargo.lock", "target/**/*"]
 resolver = "2"
-rust-version = "1.56"
+rust-version = "1.63"
 
 [package.metadata.docs.rs]
 all-features = true

README.md

@@ -4,7 +4,7 @@
 [![Crates.io](https://img.shields.io/crates/v/naga.svg?label=naga)](https://crates.io/crates/naga)
 [![Docs.rs](https://docs.rs/naga/badge.svg)](https://docs.rs/naga)
 [![Build Status](https://github.com/gfx-rs/naga/workflows/pipeline/badge.svg)](https://github.com/gfx-rs/naga/actions)
-![MSRV](https://img.shields.io/badge/rustc-1.56+-blue.svg)
+![MSRV](https://img.shields.io/badge/rustc-1.63+-blue.svg)
 [![codecov.io](https://codecov.io/gh/gfx-rs/naga/branch/master/graph/badge.svg?token=9VOKYO8BM2)](https://codecov.io/gh/gfx-rs/naga)
 
 The shader translation library for the needs of [wgpu](https://github.com/gfx-rs/wgpu).

src/front/wgsl/number.rs

@@ -397,13 +397,13 @@ fn parse_dec_float(input: &str, kind: Option<FloatKind>) -> Result<Number, Numbe
         None => {
             let num = input.parse::<f64>().unwrap(); // will never fail
             num.is_finite()
-                .then(|| Number::AbstractFloat(num))
+                .then_some(Number::AbstractFloat(num))
                 .ok_or(NumberError::NotRepresentable)
         }
         Some(FloatKind::F32) => {
             let num = input.parse::<f32>().unwrap(); // will never fail
             num.is_finite()
-                .then(|| Number::F32(num))
+                .then_some(Number::F32(num))
                 .ok_or(NumberError::NotRepresentable)
         }
         Some(FloatKind::F16) => Err(NumberError::UnimplementedF16),