When I run geckoview-junit on try with my patches in bug 1445716, I hit a crash: https://treeherder.mozilla.org/logviewer.html#?job_id=174163396&repo=try&lineNumber=1745 PROCESS-CRASH | forCallbacksDuringWait_multipleOrder | application crashed [@ mozilla::net::nsSocketTransport::InitiateSocket] [task 2018-04-17T18:26:34.029Z] 18:26:34 INFO - Thread 15 (crashed) [task 2018-04-17T18:26:34.029Z] 18:26:34 INFO - 0 libxul.so!mozilla::net::nsSocketTransport::InitiateSocket [nsSocketTransport2.cpp:f94b64e0020225c71701930f193bd96c3ad1d150 : 1310 + 0x4] [task 2018-04-17T18:26:34.029Z] 18:26:34 INFO - r0 = 0x00000000 r1 = 0x0000051e r2 = 0x655ee4b0 r3 = 0x53838fd8 [task 2018-04-17T18:26:34.030Z] 18:26:34 INFO - r4 = 0x655ee400 r5 = 0x655ee4b0 r6 = 0x6595ba00 r7 = 0x538392e0 [task 2018-04-17T18:26:34.030Z] 18:26:34 INFO - r8 = 0x538391d0 r9 = 0x00000000 r10 = 0x656b6020 r12 = 0x00000003 [task 2018-04-17T18:26:34.030Z] 18:26:34 INFO - fp = 0x5383984f sp = 0x53838fe0 lr = 0x55e26e03 pc = 0x55e26e12 [task 2018-04-17T18:26:34.031Z] 18:26:34 INFO - Found by: given as instruction pointer in context [task 2018-04-17T18:26:34.031Z] 18:26:34 INFO - 1 libxul.so!mozilla::net::nsSocketTransport::OnSocketEvent [nsSocketTransport2.cpp:f94b64e0020225c71701930f193bd96c3ad1d150 : 0 + 0x5] [task 2018-04-17T18:26:34.031Z] 18:26:34 INFO - r4 = 0x655ee400 r5 = 0x804b000b r6 = 0x656a8fa0 r7 = 0x53839308 [task 2018-04-17T18:26:34.032Z] 18:26:34 INFO - r8 = 0x00000000 r9 = 0x00000000 r10 = 0x656b6020 fp = 0x5383984f [task 2018-04-17T18:26:34.032Z] 18:26:34 INFO - sp = 0x538392e8 lr = 0x55e27b71 pc = 0x55e27b71 [task 2018-04-17T18:26:34.032Z] 18:26:34 INFO - Found by: call frame info [task 2018-04-17T18:26:34.033Z] 18:26:34 INFO - 2 libxul.so!mozilla::net::nsSocketEvent::Run [nsSocketTransport2.cpp:f94b64e0020225c71701930f193bd96c3ad1d150 : 90 + 0x5] [task 2018-04-17T18:26:34.033Z] 18:26:34 INFO - r4 = 0x533fe040 r5 = 0x00000000 r6 = 0x00000001 r7 = 0x53839310 [task 2018-04-17T18:26:34.033Z] 18:26:34 INFO - r8 = 0x5336a2ac r9 = 0x00000000 r10 = 0x656b6020 fp = 0x5383984f [task 2018-04-17T18:26:34.033Z] 18:26:34 INFO - sp = 0x53839310 lr = 0x55e32e43 pc = 0x55e32e43 [task 2018-04-17T18:26:34.034Z] 18:26:34 INFO - Found by: call frame info Logcat shows: 04-17 11:26:16.741 734 747 I TestRunner: started: forCallbacksDuringWait_multipleOrder(org.mozilla.geckoview.test.GeckoSessionTestRuleTest) 04-17 11:26:16.781 734 734 I MonitoringInstrumentation: Activities that are still in CREATED to STOPPED: 0 04-17 11:26:16.860 734 748 D GeckoViewModule: unregisterListener 04-17 11:26:16.870 734 748 D GeckoViewNavigation: onDisable 04-17 11:26:16.880 734 748 D GeckoViewProgress: onDisable 04-17 11:26:16.890 779 792 D GeckoViewContent[C]: onDisable 04-17 11:26:16.910 779 792 D GeckoViewNavigation[C]: onDisable 04-17 11:26:16.951 734 748 I nsScreenManagerAndroid: nsWindow[0x655c7040]::Create 0x0 [0 0 1 1] 04-17 11:26:16.961 779 792 D GeckoViewScroll[C]: onDisable 04-17 11:26:17.001 779 792 D GeckoViewSelectionAction[C]: onDisable 04-17 11:26:17.071 734 748 I nsScreenManagerAndroid: nsWindow[0x533e2eb0]::Show 0 04-17 11:26:17.701 734 758 I Gecko : FATAL ERROR: Non-local network connections are disabled and a connection attempt to shavar.services.mozilla.com (54.191.46.28) was made. 04-17 11:26:17.701 734 758 I Gecko : You should only access hostnames available via the test networking proxy (if running mochitests) or from a test-specific httpd.js server (if running xpcshell tests). Browser services should be disabled or redirected to a local server. 04-17 11:26:17.771 823 823 W google-breakpad: ExceptionHandler::WaitForContinueSignal waiting for continue signal... 04-17 11:26:17.781 734 758 W google-breakpad: ExceptionHandler::GenerateDump cloned child

Oops - I was not setting up the profile correctly.