Memcache and Datastore call explicitly cancelled

[Tomas]

I'm getting a lot of these in my logs for last 10 hours - I'm still on M/S datastore (Yeah I know!), no deploays in last 5 months. The app engine status shows no disruptions at all - app id ms-librari-st.

om.google.apphosting.api.ApiProxy$CancelledException: The API call memcache.Set() was explicitly cancelled.
	at com.google.apphosting.runtime.ApiProxyImpl$5.get(ApiProxyImpl.java:367)
	at com.google.apphosting.runtime.ApiProxyImpl$5.get(ApiProxyImpl.java:364)
	at com.google.appengine.tools.appstats.RecordingFuture.get(RecordingFuture.java:99)
	at com.google.appengine.tools.appstats.Recorder.processRecordingFuture(Recorder.java:418)
	at com.google.appengine.tools.appstats.Recorder.processAsyncRpc(Recorder.java:391)
	at com.google.appengine.tools.appstats.RecordingFuture.maybeRecordStats(RecordingFuture.jav

Uncaught exception from servlet
com.google.apphosting.api.ApiProxy$CancelledException: The API call datastore_v3.Put() was explicitly cancelled.
	at com.google.apphosting.runtime.ApiProxyImpl$5.get(ApiProxyImpl.java:367)
	at com.google.apphosting.runtime.ApiProxyImpl$5.get(ApiProxyImpl.java:364)
	at com.google.appengine.tools.appstats.RecordingFuture.get(RecordingFuture.java:99)
	at com.google.appengine.tools.appstats.Recorder.processRecordingFuture(Recorder.java:418)
	at com.google.appengine.tools.appstats.Recorder.processAsyncRpc(Recorder.java:391)