[MC-10143] Crash report of vanilla 13w07a shows "Suspicious classes: $Proxy3, $Proxy4]"

Steps to reproduce:

Force a crash manually by pressing F3 + C for 10 seconds
Read the crash report
```
Suspicious classes: $Proxy3, $Proxy4]
```

Attached crash reports of CSP and SMP

Environment

Win 7-64
Java 7U15

Win 8-64
Java 1.7.0_09

Attachments

crash-2013-02-22_07.26.15-client.txt

crash-2013-02-22_07.33.22-client.txt

Comments 2

fuj1n 2013-02-22T06:47:22Z

Confirmed.

kumasasa 2013-02-25T06:41:28Z

The follow up of that issue is

[Bot] Spam Golem added a comment - 25/Feb/13 3:55 AM
I could not find any existing issue that contains any of the crashes mentioned here. However, all of the crash reports that you have provided are from a modded version of Minecraft. Please try to reproduce the crash in a vanilla (non-modded) version of Minecraft and attach that report or this may be dismissed as being caused by a mod.

and

[Mod] Tails added a comment - 25/Feb/13 4:36 AM
Please ignore the bot 🙂