CI: {caching, test, bench}: output freeze or warning

Author: Anton-Latukha

.github/workflows/bench.yml

@@ -88,11 +88,13 @@ jobs:
     - name: Form the package list ('cabal.project.freeze')
       continue-on-error: true
       run: |
-        cabal v2-freeze
-        echo ''
-        echo 'Output:'
-        echo ''
-        cat 'cabal.project.freeze'
+        cabal v2-freeze && \
+        echo '' && \
+        echo 'Output:' && \
+        echo '' && \
+        cat 'cabal.project.freeze' && \
+        echo '' || \
+        echo 'WARNING: Could not produce the `freeze`.
 
     - name: Hackage sources cache
       uses: actions/cache@v2

.github/workflows/caching.yml

@@ -145,11 +145,13 @@ jobs:
       - name: Form the package list ('cabal.project.freeze')
         continue-on-error: true
         run: |
-          cabal v2-freeze
-          echo ''
-          echo 'Output:'
-          echo ''
-          cat 'cabal.project.freeze'
+          cabal v2-freeze && \
+          echo '' && \
+          echo 'Output:' && \
+          echo '' && \
+          cat 'cabal.project.freeze' && \
+          echo '' || \
+          echo 'WARNING: Could not produce the `freeze`.
 
       # 2021-12-02: NOTE: Cabal Hackage source tree storage does not depend on OS or GHC really,
       # but can depend on `base`.

.github/workflows/test.yml

@@ -149,11 +149,13 @@ jobs:
       - name: Form the package list ('cabal.project.freeze')
         continue-on-error: true
         run: |
-          cabal v2-freeze
-          echo ''
-          echo 'Output:'
-          echo ''
-          cat 'cabal.project.freeze'
+          cabal v2-freeze && \
+          echo '' && \
+          echo 'Output:' && \
+          echo '' && \
+          cat 'cabal.project.freeze' && \
+          echo '' || \
+          echo 'WARNING: Could not produce the `freeze`.
 
       - name: Hackage sources cache
         uses: actions/cache@v2