Started here:
https://build.chromium.org/p/chromium.android/builders/Android%20Cronet%20Builder/builds/1947

Error message:
C  128.384s Main  [FAIL] org.chromium.net.CronetUrlRequestContextTest#testSkipLibraryLoading:
C  128.384s Main  java.lang.Throwable: CronetTestBase#runTest failed.
C  128.384s Main  	at org.chromium.net.CronetTestBase.runTest(CronetTestBase.java:147)
C  128.384s Main  	at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:191)
C  128.384s Main  	at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:176)
C  128.384s Main  	at android.test.InstrumentationTestRunner.onStart(InstrumentationTestRunner.java:554)
C  128.384s Main  	at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1701)
C  128.384s Main  Caused by: junit.framework.AssertionFailedError: Native library should not be loaded
C  128.384s Main  	at org.chromium.net.CronetUrlRequestContextTest.testSkipLibraryLoading(CronetUrlRequestContextTest.java:1123)
C  128.384s Main  	at java.lang.reflect.Method.invokeNative(Native Method)
C  128.384s Main  	at org.chromium.net.CronetTestBase.runTest(CronetTestBase.java:144)