#328 feat: add comprehensive no_std matrix testing (#329)

Add matrix testing for all critical feature combinations:
- bare (--no-default-features)
- std (--features std)
- tracing (no_std + tracing)
- metrics (no_std + metrics)
- colored (no_std + colored)
- all (--all-features)

Benefits:
- 🛡️ Prevents regressions like #326
- ✅ Tests all feature combinations in parallel
- 📊 Separate cache for each configuration
- 🚀 100% confidence in no_std support

Bump version: 0.25.0 → 0.25.1

Fixes #328

Author: RAprogramm

.github/workflows/ci.yml

@@ -26,8 +26,24 @@ jobs:
     secrets: inherit
 
   no-std:
-    name: no_std compatibility
+    name: no_std (${{ matrix.name }})
     runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - name: "bare"
+            features: "--no-default-features"
+          - name: "std"
+            features: "--features std"
+          - name: "tracing"
+            features: "--no-default-features --features tracing"
+          - name: "metrics"
+            features: "--no-default-features --features metrics"
+          - name: "colored"
+            features: "--no-default-features --features colored"
+          - name: "all"
+            features: "--all-features"
     steps:
       - uses: actions/checkout@v5
 
@@ -39,11 +55,11 @@ jobs:
       - name: Cache cargo
         uses: Swatinem/rust-cache@v2
         with:
-          shared-key: no-std
+          shared-key: no-std-${{ matrix.name }}
           save-if: ${{ github.ref == 'refs/heads/main' }}
 
-      - name: Check no_std build
-        run: cargo check --no-default-features
+      - name: Check ${{ matrix.name }}
+        run: cargo check ${{ matrix.features }}
 
   update-changelog:
     needs: [ci, no-std]

Cargo.lock

@@ -4,7 +4,7 @@
 
 [package]
 name = "masterror"
-version = "0.25.0"
+version = "0.25.1"
 rust-version = "1.90"
 edition = "2024"
 license = "MIT"

Cargo.toml

@@ -159,9 +159,9 @@ The build script keeps the full feature snippet below in sync with
 
 ~~~toml
 [dependencies]
-masterror = { version = "0.25.0", default-features = false }
+masterror = { version = "0.25.1", default-features = false }
 # or with features:
-# masterror = { version = "0.25.0", features = [
+# masterror = { version = "0.25.1", features = [
 #   "std", "axum", "actix", "openapi",
 #   "serde_json", "tracing", "metrics", "backtrace",
 #   "colored", "sqlx", "sqlx-migrate", "reqwest",
@@ -640,7 +640,7 @@ Enable the `colored` feature for enhanced terminal output in local mode:
 
 ~~~toml
 [dependencies]
-masterror = { version = "0.25.0", features = ["colored"] }
+masterror = { version = "0.25.1", features = ["colored"] }
 ~~~
 
 With `colored` enabled, errors display with syntax highlighting: