refs TG-3: build Windows Qt

Jenkinsfile

@@ -87,7 +87,7 @@ foreach ($target in $targets) {
             break
         }
     } catch {
-        Write-Host "Taiga lookup warning: $($_.Exception.Message)"
+        Write-Host "Taiga lookup warning"
     }
 }
 
@@ -108,14 +108,17 @@ try {
     Invoke-RestMethod -Uri $url -Headers $headers -Method Patch -Body $body
     Write-Host "Commented Taiga TG-$ref ($($found.label))"
 } catch {
-    Write-Host "Taiga comment warning: $($_.Exception.Message)"
+    Write-Host "Taiga comment warning"
 }
 
 exit 0
 '''
 
                         withEnv(["BUILD_RESULT=${result}"]) {
-                            powershell(returnStatus: true, file: 'taiga-post.ps1')
+                            bat(returnStatus: true, script: '''
+                                powershell -NoProfile -ExecutionPolicy Bypass -File taiga-post.ps1
+                                exit /b 0
+                            ''')
                         }
                     }
                 }