Debug builds actually work now

-And it literally took one line in my Gradle setup, that took 30 seconds
to search for. Last time I tried to fix this it took hours of searching
and I never found a solution. I want to die.

app/build.gradle

@@ -33,10 +33,9 @@ android {
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
-            buildConfigField 'Boolean', 'enableCrashlytics', 'true'
         }
         debug {
-            buildConfigField 'Boolean', 'enableCrashlytics', 'false'
+            ext.enableCrashlytics = false
         }
     }
     compileOptions {

app/src/main/java/srct/whatsopen/MyApplication.java

@@ -20,7 +20,6 @@ public class MyApplication extends Application {
     public void onCreate() {
         super.onCreate();
 
-        if (BuildConfig.enableCrashlytics)
         Fabric.with(this, new Crashlytics());
 
         // Set up LeakCanary for memory leak detection

build.gradle

@@ -6,7 +6,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.3.1'
+        classpath 'com.android.tools.build:gradle:3.0.0-alpha3'
         classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'
         classpath "io.realm:realm-gradle-plugin:3.0.0"
         classpath 'me.tatarka:gradle-retrolambda:3.3.1'

gradle/wrapper/gradle-wrapper.properties

-#Sun May 07 19:15:28 EDT 2017
+#Sat Aug 12 23:04:43 EDT 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.0-milestone-1-all.zip