title: Crashlytics not uploading mapping file
body: <p>I'm able to see crashes for a release build in Crashlytics but they are still obfuscated. I'm using:</p>
  
  <pre><code>implementation "com.google.firebase:firebase-core:16.0.5"
  implementation "com.google.android.gms:play-services-base:16.0.1"
  implementation "com.crashlytics.sdk.android:crashlytics:2.9.6"
  </code></pre>
  
  <p>and (project level)</p>
  
  <pre><code>    classpath 'com.android.tools.build:gradle:3.2.1'
      classpath 'com.google.gms:google-services:4.2.0'
      classpath 'io.fabric.tools:gradle:1.26.1' // Crashlytics plugin
      classpath "net.ltgt.gradle:gradle-apt-plugin:0.15"
  </code></pre>
  
  <p>I've followed the instructions at <a href="https://firebase.google.com/docs/crashlytics/get-deobfuscated-report" rel="nofollow noreferrer">https://firebase.google.com/docs/crashlytics/get-deobfuscated-report</a>, in particular I've deleted the <code>-printmapping &lt;path&gt;/mapping.txt</code> line from <code>config.txt</code></p>
  
  <p>When I look in the Crashlytics log I do not see an upload of the mapping file.</p>
  
  <p>When I run a release build for an earlier version of my project using:</p>
  
  <pre><code>implementation "com.google.firebase:firebase-core:11.8.0"
  implementation "com.google.android.gms:play-services-base:11.8.0"
  implementation('com.crashlytics.sdk.android:crashlytics:2.8.0@aar') {
      transitive = true
  }
  </code></pre>
  
  <p>and (project level)</p>
  
  <pre><code>    classpath 'com.android.tools.build:gradle:3.1.3'
      classpath 'com.google.gms:google-services:3.0.0'
      classpath 'io.fabric.tools:gradle:1.24.4'
  </code></pre>
  
  <p>then I see unobfuscated stack traces and mapping upload messages in crashlytics.log:</p>
  
  <pre><code>2018-11-21 10:52:22.573 [DEBUG] (Daemon worker) com.crashlytics  - Deobfuscation file(s) uploaded.
  </code></pre>
  
  <p>Any ideas what's wrong? I don't see any of the mapping file related logs for the recent (not working) version in the Crashlytics log and I don't see the gradle upload task running in the gradle output whereas for the older (working) version I see the following:</p>
  
  <pre><code>:app:crashlyticsUploadDeobsRelease (Thread[Daemon worker Thread 2,5,main]) completed. Took 1.28 secs.
  </code></pre>