set lower memory usage in travis to hopefully fix the build

Author: dcendents

.travis.yml

@@ -14,6 +14,10 @@ script: ./gradlew clean build --info --stacktrace
 
 sudo: false
 
+env:
+  global:
+    - GRADLE_OPTS="-Xms128m"
+
 cache:
   directories:
   - $HOME/.gradle

build.gradle

@@ -226,3 +226,15 @@ task wrapper(type: Wrapper) {
     gradleVersion = '3.2'
     distributionUrl = "https://services.gradle.org/distributions/gradle-${gradleVersion}-all.zip"
 }
+
+if (System.env.TRAVIS == 'true') {
+	allprojects {
+		tasks.withType(GroovyCompile) {
+			groovyOptions.fork = false
+		}
+		tasks.withType(Test) {
+			minHeapSize = '128m'
+			maxHeapSize = '256m'
+		}
+	}
+}