adding an if statement for _coverage dir (#16729)

Author: seankane-msft

eng/pipelines/templates/steps/build-test.yml

@@ -64,9 +64,11 @@ steps:
   - ${{ parameters.AfterTestSteps }}
 
   - pwsh: |
-      Get-ChildItem .\_coverage\ |
-      Foreach-Object {
-        Get-Content $_
+      if (Test-Path -Path '.\_coverage\') {
+        Get-ChildItem .\_coverage\ |
+        Foreach-Object {
+          Get-Content $_
+        }
       }
     displayName: 'Show .coverage files'
     condition: and(succeeded(), ${{ parameters.RunCoverage }})

scripts/devops_tasks/tox_harness.py

@@ -329,7 +329,7 @@ def collect_log_files(working_dir):
 
             for filename in os.listdir(log_files):
                 if filename.endswith(".log"):
-                    logging.info("LOG FILE: ", filename)
+                    logging.info("LOG FILE: {}".format(filename))
 
                     file_location = os.path.join(log_files, filename)
                     shutil.move(