Steam errors while running Ubuntu on VirtualBox

Every time i try to launch steam i get those errors, i searched but found no answers to my problem, pls halp :mad:

LD_PRELOAD='/usr/$LIB/libstdc++.so.6' DISPLAY=:0 steam
Running Steam on ubuntu 16.10 64-bit
STEAM_RUNTIME is enabled automatically
grep: symbol lookup error: grep: undefined symbol: pcre_jit_stack_alloc
grep: symbol lookup error: grep: undefined symbol: pcre_jit_stack_alloc
/bin/bash: /home/alessio/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/lib/x86_64-linux-gnu/libtinfo.so.5: no version information available (required by /bin/bash)
grep: symbol lookup error: grep: undefined symbol: pcre_jit_stack_alloc
Installing breakpad exception handler for appid(steam)/version(1476379980)
libGL error: unable to load driver: swrast_dri.so
libGL error: failed to load driver: swrast