java.lang.IllegalStateException: Fatal Exception thrown on Scheduler.Worker thread.

at rx.internal.schedulers.ScheduledAction.run(:4)

at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:487)

at java.util.concurrent.FutureTask.run(FutureTask.java:264)

at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:307)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:644)

at java.lang.Thread.run(Thread.java:1012)

Caused by: java.lang.OutOfMemoryError: Failed to allocate a 32 byte allocation with 4334616 free bytes and 4233KB until OOM, target footprint 536870912, growth limit 536870912; giving up on allocation because <1% of heap free after GC.