Store unrecoverable

app/src/main/java/eu/faircode/email/Core.java

@@ -4168,6 +4168,7 @@ class Core {
         private Semaphore semaphore = new Semaphore(0);
         private boolean running = true;
         private boolean recoverable = true;
+        private Throwable unrecoverable = null;
         private Long lastActivity = null;
 
         private boolean process = false;
@@ -4244,6 +4245,9 @@ class Core {
             if (ex instanceof OperationCanceledException)
                 recoverable = false;
 
+            if (!recoverable)
+                unrecoverable = ex;
+
             if (!backingoff) {
                 thread.interrupt();
                 yield();
@@ -4297,6 +4301,10 @@ class Core {
             return recoverable;
         }
 
+        Throwable getUnrecoverable() {
+            return unrecoverable;
+        }
+
         void join(Thread thread) {
             boolean joined = false;
             boolean interrupted = false;

app/src/main/java/eu/faircode/email/ServiceSynchronize.java

@@ -1469,8 +1469,13 @@ public class ServiceSynchronize extends ServiceBase implements SharedPreferences
                                     " Tune interval=" + account.poll_interval +
                                     " idle=" + idleTime + "/" + tune);
                         try {
-                            if (!state.isRecoverable())
-                                throw new StoreClosedException(iservice.getStore(), "Unrecoverable");
+                            if (!state.isRecoverable()) {
+                                Throwable ex = state.getUnrecoverable();
+                                if (ex instanceof Exception)
+                                    throw new StoreClosedException(iservice.getStore(), "Unrecoverable", (Exception) ex);
+                                else
+                                    throw new StoreClosedException(iservice.getStore(), "Unrecoverable");
+                            }
 
                             // Sends store NOOP
                             EntityLog.log(ServiceSynchronize.this, account.name + " checking store");