Title says it all. The attached crash report was generated after one last attempt.
Environment
OS: Mac OS X (ver 10.10.4, arch x86_64)
Java: 1.8.0_74 (by Oracle Corporation)
Launcher: Minecraft Launcher 1.6.61 (bootstrap 100)
Minecraft: 1.10.1 (updated Wed Jun 22 06:14:48 EDT 2016)
goes in a server but not even a second later it crashes