refactor: Bump MSRV to 1.75 for async in trait

Signed-off-by: Xuanwo <[email protected]>

Author: Xuanwo

.github/workflows/ci.yml

@@ -1,5 +1,5 @@
 name: ci
-on: [push, pull_request]
+on: [ push, pull_request ]
 
 jobs:
   lint:
@@ -9,8 +9,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, macOS-latest, windows-latest]
-        component: [clippy]
+        os: [ ubuntu-latest, macOS-latest, windows-latest ]
+        component: [ clippy ]
         include:
           - component: rustfmt
             cargo_cmd: fmt -- --check
@@ -26,7 +26,7 @@ jobs:
         with:
           components: ${{ matrix.component }}
           # Oldest supported version, keep in sync with README.md
-          toolchain: "1.70.0"
+          toolchain: "1.75.0"
 
       - name: clippy version
         run: cargo clippy --version
@@ -39,7 +39,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        feature: [azure, gcs, gha, memcached, redis, s3, webdav]
+        feature: [ azure, gcs, gha, memcached, redis, s3, webdav ]
     steps:
       - name: Clone repository
         uses: actions/checkout@v4
@@ -67,10 +67,10 @@ jobs:
         include:
           - os: ubuntu-20.04
             # Oldest supported version, keep in sync with README.md
-            rustc: "1.70.0"
+            rustc: "1.75.0"
           - os: ubuntu-22.04
             # Oldest supported version, keep in sync with README.md
-            rustc: "1.70.0"
+            rustc: "1.75.0"
             extra_desc: dist-server
             extra_args: --no-default-features --features=dist-tests test_dist_ -- --test-threads 1
           - os: ubuntu-20.04
@@ -91,7 +91,7 @@ jobs:
           - os: macos-14
           - os: windows-2019
             # Oldest supported version, keep in sync with README.md
-            rustc: "1.70.0"
+            rustc: "1.75.0"
           - os: windows-2019
             rustc: nightly
             allow_failure: true
@@ -330,7 +330,7 @@ jobs:
   release:
     name: release
     runs-on: ubuntu-latest
-    needs: [build, lint, test]
+    needs: [ build, lint, test ]
     if: ${{ startsWith(github.ref, 'refs/tags/') }}
     steps:
       - name: Clone repository

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 edition = "2021"
 name = "sccache"
-rust-version = "1.70.0"
+rust-version = "1.75.0"
 version = "0.8.1"
 
 categories = ["command-line-utilities", "development-tools::build-utils"]

README.md

@@ -176,7 +176,7 @@ And you can build code as usual without any additional flags in the command line
 Build Requirements
 ------------------
 
-sccache is a [Rust](https://www.rust-lang.org/) program. Building it requires `cargo` (and thus`rustc`). sccache currently requires **Rust 1.70.0**. We recommend you install Rust via [Rustup](https://rustup.rs/).
+sccache is a [Rust](https://www.rust-lang.org/) program. Building it requires `cargo` (and thus`rustc`). sccache currently requires **Rust 1.75.0**. We recommend you install Rust via [Rustup](https://rustup.rs/).
 
 Build
 -----

snap/snapcraft.yaml

@@ -4,49 +4,49 @@ adopt-info: sccache
 
 summary: sccache is ccache with cloud storage
 description: |
-    sccache is a ccache-like compiler caching tool. It is used as a compiler
-    wrapper and avoids compilation when possible, storing cached results either
-    on local disk or in one of several cloud storage backends.
-
-    sccache includes support for caching the compilation of C/C++ code, Rust, as
-    well as NVIDIA's CUDA using nvcc.
-
-    sccache also provides icecream-style distributed compilation (automatic
-    packaging of local toolchains) for all supported compilers (including Rust).
-    The distributed compilation system includes several security features that
-    icecream lacks such as authentication, transport layer encryption, and
-    sandboxed compiler execution on build servers. See the distributed quickstart
-    guide for more information.
-
-    sccache is also available as a GitHub Actions to facilitate the deployment
-    using GitHub Actions cache.
+  sccache is a ccache-like compiler caching tool. It is used as a compiler
+  wrapper and avoids compilation when possible, storing cached results either
+  on local disk or in one of several cloud storage backends.
+  
+  sccache includes support for caching the compilation of C/C++ code, Rust, as
+  well as NVIDIA's CUDA using nvcc.
+  
+  sccache also provides icecream-style distributed compilation (automatic
+  packaging of local toolchains) for all supported compilers (including Rust).
+  The distributed compilation system includes several security features that
+  icecream lacks such as authentication, transport layer encryption, and
+  sandboxed compiler execution on build servers. See the distributed quickstart
+  guide for more information.
+  
+  sccache is also available as a GitHub Actions to facilitate the deployment
+  using GitHub Actions cache.
 website: https://github.com/mozilla/sccache
 contact: https://github.com/mozilla/sccache/issues
 license: "Apache-2.0"
 grade: stable
 confinement: classic
 
 apps:
-    sccache:
-        command: bin/sccache
-    sccache-dist:
-        command: bin/sccache-dist
+  sccache:
+    command: bin/sccache
+  sccache-dist:
+    command: bin/sccache-dist
 
 parts:
-    sccache:
-        plugin: rust
-        rust-channel: 1.70.0
-        rust-use-global-lto: true
-        source: .
-        override-pull: |
-          craftctl default
-          craftctl set version="$( git -C "${CRAFT_PART_SRC}" describe --tags )"
-        build-packages:
-        - libssl-dev
-        - make
-        - pkg-config
-        rust-features:
-        - all
-        - dist-server
-        build-attributes:
-        - enable-patchelf
+  sccache:
+    plugin: rust
+    rust-channel: 1.75.0
+    rust-use-global-lto: true
+    source: .
+    override-pull: |
+      craftctl default
+      craftctl set version="$( git -C "${CRAFT_PART_SRC}" describe --tags )"
+    build-packages:
+      - libssl-dev
+      - make
+      - pkg-config
+    rust-features:
+      - all
+      - dist-server
+    build-attributes:
+      - enable-patchelf