Another ConcurrentModificationException

[djdance]

Hello, I am getting this one from different users and different phones, but in the same place. According to breakpoints, it occurs in 100ms after Ion.with(this).load(s), and onCompleted(Exception e, JsonObject result) doesn't executed. Could you assume, what's wrong?

java.util.ConcurrentModificationException
    at com.google.gson.internal.LinkedTreeMap$LinkedTreeMapIterator.nextNode(LinkedTreeMap.java:544)
    at com.google.gson.internal.LinkedTreeMap$EntrySet$1.next(LinkedTreeMap.java:568)
    at com.google.gson.internal.LinkedTreeMap$EntrySet$1.next(LinkedTreeMap.java:566)
    at com.google.gson.internal.bind.TypeAdapters$29.write(TypeAdapters.java:758)
    at com.google.gson.internal.bind.TypeAdapters$29.write(TypeAdapters.java:698)
    at com.google.gson.internal.Streams.write(Streams.java:72)
    at com.google.gson.JsonElement.toString(JsonElement.java:316)
    at com.koushikdutta.ion.gson.GsonBody.length(GsonBody.java:55)
    at com.koushikdutta.async.http.HttpTransportMiddleware.exchangeHeaders(HttpTransportMiddleware.java:31)
    at com.koushikdutta.async.http.AsyncHttpClient.executeSocket(AsyncHttpClient.java:491)
    at com.koushikdutta.async.http.AsyncHttpClient.access$300(AsyncHttpClient.java:50)
    at com.koushikdutta.async.http.AsyncHttpClient$3.onConnectCompleted(AsyncHttpClient.java:285)
    at com.koushikdutta.async.http.AsyncSocketMiddleware.getSocket(AsyncSocketMiddleware.java:156)
    at com.koushikdutta.async.http.spdy.SpdyMiddleware.getSocket(SpdyMiddleware.java:334)
    at com.koushikdutta.async.http.AsyncHttpClient.executeAffinity(AsyncHttpClient.java:300)
    at com.koushikdutta.async.http.AsyncHttpClient.access$100(AsyncHttpClient.java:50)
    at com.koushikdutta.async.http.AsyncHttpClient$1.run(AsyncHttpClient.java:189)
    at com.koushikdutta.async.AsyncServer$Scheduled.run(AsyncServer.java:236)
    at com.koushikdutta.async.AsyncServer.lockAndRunQueue(AsyncServer.java:788)
    at com.koushikdutta.async.AsyncServer.runLoop(AsyncServer.java:806)
    at com.koushikdutta.async.AsyncServer.run(AsyncServer.java:717)
    at com.koushikdutta.async.AsyncServer.access$800(AsyncServer.java:46

I saw same previous reports (concerning bitmap & UI thread). I use to run few UI things right from FutureCallback() { onCompleted() } - is it okay? I thought yes.

Thanks anyway.

[djdance]

version 3.0.8.
before I was on 2.2.1 and it was always fine.

[djdance]

I can report after two months of downgrading back to 2.2.1, that no any ConcurrentModificationException crash occured among thousands of my users. So it could be better to fix it in versions 3.x