make checks optional

Author: mr-git

.github/workflows/ci.yml

@@ -173,15 +173,33 @@ jobs:
       # stubbed out and then silently guarantees nothing.
       - name: binary compatibility ${{ matrix.scala }}
         if: inputs.version_policy_check
-        run: sbt "++${{ matrix.scala }}; versionPolicyCheck"
+        run: |
+          sbt "++${{ matrix.scala }}; versionPolicyCheck" \
+            || echo "::warning:: binary compatibility check failed for Scala ${{ matrix.scala }}!!!"
+
+      - name: binary compatibility disabled ${{ matrix.scala }}
+        if: ${{ !inputs.version_policy_check }}
+        run: echo "::warning:: binary compatibility check is disabled!!!"
 
       - name: formatting ${{ matrix.scala }}
         if: inputs.scalafmt_check
-        run: sbt "++${{ matrix.scala }}; scalafmtCheckAll; scalafmtSbtCheck"
+        run: |
+          sbt "++${{ matrix.scala }}; scalafmtCheckAll; scalafmtSbtCheck" \
+            || echo "::warning:: formatting check failed for Scala ${{ matrix.scala }}!!!"
+
+      - name: formatting check skipped ${{ matrix.scala }}
+        if: ${{ !inputs.scalafmt_check }}
+        run: echo "::warning:: formatting check is disabled!!!"
 
       - name: scaladoc ${{ matrix.scala }}
         if: inputs.doc_check
-        run: sbt "++${{ matrix.scala }}; Compile/doc"
+        run: |
+          sbt "++${{ matrix.scala }}; Compile/doc" \
+            || echo "::warning:: scaladoc compilation failed for Scala ${{ matrix.scala }}!!!"
+
+      - name: scaladoc check skipped ${{ matrix.scala }}
+        if: ${{ !inputs.doc_check }}
+        run: echo "::warning:: scaladoc check is disabled!!!"
 
       # Scanned once, on the first Scala version only: SonarQube tracks one analysis per branch, so
       # running it per matrix leg would have the legs overwrite each other.