A 14w07a (or 6a/b) server will crash when you do this:
1: Click 'Join Server' button
2: Before you join, (when you get the Connecting to the server-text) click Cancel
3: The server crashes.
Crash report:
http://pastebin.com/gEgeQgTt
MC-48829
Server crashes when joining a server but clicking on Cancel
Resolved
Incomplete
0
(Unassigned)
Unconfirmed
ban, clear, crash, disconnect, log-in, server
Minecraft 14w06b, Minecraft 14w07a
Retrieved
Is this still a concern in the current Minecraft version? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases. If this has been done, we can reopen the issue.
Keep in mind that the "Resolved"-Status on this ticket just means "Answered", and that we are waiting for further information on whether this issue still exists or not. We will reopen it as soon as the requested information has been delivered.