steam log disabling steam runtime

gistfile1.txt

STEAM_RUNTIME=0 steam
/home/tomtomme/.local/share/Steam/steam.sh: Zeile 145: DISTRIB_ID ist nicht gesetzt.
/home/tomtomme/.local/share/Steam/steam.sh: Zeile 159: DISTRIB_RELEASE ist nicht gesetzt.
/home/tomtomme/.local/share/Steam/steam.sh: Zeile 145: DISTRIB_ID ist nicht gesetzt.
/home/tomtomme/.local/share/Steam/steam.sh: Zeile 159: DISTRIB_RELEASE ist nicht gesetzt.
Running Steam on   64-bit
STEAM_RUNTIME is disabled by the user
Installing breakpad exception handler for appid(steam)/version(1433441724)
ATTENTION: default value of option force_s3tc_enable overridden by environment.
Installing breakpad exception handler for appid(steam)/version(1433441724)

(steam:2903): Gtk-WARNING **: Im Modulpfad »adwaita« konnte keine Themen-Engine gefunden werden,

(steam:2903): Gtk-WARNING **: Im Modulpfad »adwaita« konnte keine Themen-Engine gefunden werden,

(steam:2903): Gtk-WARNING **: Im Modulpfad »adwaita« konnte keine Themen-Engine gefunden werden,

(steam:2903): Gtk-WARNING **: Im Modulpfad »adwaita« konnte keine Themen-Engine gefunden werden,
Installing breakpad exception handler for appid(steam)/version(1433441724)
[0625/145626:ERROR:browser_main_loop.cc(170)] Running without the SUID sandbox! See https://code.google.com/p/chromium/wiki/LinuxSUIDSandboxDevelopment for more information on developing with the sandbox on.
Installing breakpad exception handler for appid(steamwebhelper)/version(20150604103540)
Installing breakpad exception handler for appid(steamwebhelper)/version(1433414140)
Installing breakpad exception handler for appid(steamwebhelper)/version(20150604103540)
Installing breakpad exception handler for appid(steamwebhelper)/version(1433441724)
Installing breakpad exception handler for appid(steamwebhelper)/version(1433441724)
ATTENTION: default value of option force_s3tc_enable overridden by environment.
/home/buildbot/buildslave_steam/steam_rel_client_ubuntu12_linux/build/src/steamUI/../common/steam/client_api.cpp (320) : Assertion Failed: ClientAPI_InitGlobalInstance: InternalAPI_Init_Internal failed, most likely because you are missing a 32-bit dependency of steamclient.so (the Steam client is a 32-bit app).

Assert( Assertion Failed: ClientAPI_InitGlobalInstance: InternalAPI_Init_Internal failed, most likely because you are missing a 32-bit dependency of steamclient.so (the Steam client is a 32-bit app).
 ):/home/buildbot/buildslave_steam/steam_rel_client_ubuntu12_linux/build/src/steamUI/../common/steam/client_api.cpp:320

Installing breakpad exception handler for appid(steam)/version(1433441724)
assert_20150625145626_5.dmp[2931]: Uploading dump (out-of-process)
/tmp/dumps/assert_20150625145626_5.dmp
/home/buildbot/buildslave_steam/steam_rel_client_ubuntu12_linux/build/src/steamUI/SteamStartup.cpp (751) : Assertion Failed: ! "There was a problem with your Steam installation.\n" "Please reinstall steam.\n"
[2015-06-25 14:56:25] Startup - updater built Jun  4 2015 10:35:42                                                               
[2015-06-25 14:56:25] Verifying installation...                                                                                  
[2015-06-25 14:56:25] Verification complete                                                                                      
[2015-06-25 14:56:28] Shutdown                                                                                                   
assert_20150625145626_5.dmp[2931]: Finished uploading minidump (out-of-process): success = no                                    
assert_20150625145626_5.dmp[2931]: error: HTTP response code said error                                                          
assert_20150625145626_5.dmp[2931]: file ''/tmp/dumps/assert_20150625145626_5.dmp'', upload no: ''HTTP response code said error''