Fix Rust version requirement for bootc 1.5.1

- Replace system Rust 1.75.0 with rustup to get latest stable Rust
- Update both build-packages.yml and test-build.yml workflows
- Add source ~/.cargo/env to all Rust build steps
- Add Rust version verification in setup steps

This resolves the "requires rustc 1.82.0 or newer" error that was
preventing bootc from building in the CI/CD environment.

.forgejo/workflows/build-packages.yml

@@ -95,7 +95,15 @@ jobs:
       - name: Setup build environment
         run: |
           apt update -y
-          apt install -y git cargo rustc pkg-config build-essential
+          apt install -y git curl pkg-config build-essential
+          
+          # Install Rust using rustup to get the latest version
+          curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
+          source ~/.cargo/env
+          
+          # Verify Rust version
+          rustc --version
+          cargo --version
 
       - name: Checkout repository manually
         run: |
@@ -114,7 +122,15 @@ jobs:
       - name: Setup build environment for bootc
         run: |
           apt update -y
-          apt install -y git cargo rustc pkg-config build-essential
+          apt install -y git curl pkg-config build-essential
+          
+          # Install Rust using rustup to get the latest version
+          curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
+          source ~/.cargo/env
+          
+          # Verify Rust version
+          rustc --version
+          cargo --version
 
       - name: Clone bootc source
         run: |
@@ -158,6 +174,8 @@ jobs:
         run: |
           cd bootc-${BOOTC_VERSION}
           echo "Building bootc package with libostree compatibility patch..."
+          # Source Rust environment for the build
+          source ~/.cargo/env
           dpkg-buildpackage -us -uc -b
 
       - name: List built packages

.forgejo/workflows/test-build.yml

@@ -20,7 +20,15 @@ jobs:
       - name: Setup build environment
         run: |
           apt update -y
-          apt install -y git cargo rustc pkg-config build-essential
+          apt install -y git curl pkg-config build-essential
+          
+          # Install Rust using rustup to get the latest version
+          curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
+          source ~/.cargo/env
+          
+          # Verify Rust version
+          rustc --version
+          cargo --version
 
       - name: Checkout repository manually
         run: |
@@ -52,11 +60,15 @@ jobs:
       - name: Test cargo build
         run: |
           cd bootc-${BOOTC_VERSION}
+          # Source Rust environment for the build
+          source ~/.cargo/env
           cargo build --release
 
       - name: Test package build (if libostree available)
         run: |
           cd bootc-${BOOTC_VERSION}
+          # Source Rust environment for the build
+          source ~/.cargo/env
           if pkg-config --exists ostree-1; then
             dpkg-buildpackage -us -uc -b
             echo "Package build successful"