Just updated the golang compiler to 1.12.5 version. Everything works just fine, apart from go vet command. It responds with the following error:
# runtime/cgo
_cgo_export.c:3:10: fatal error: stdlib.h: No such file or directory
#include <stdlib.h>
^~~~~~~~~~
compilation terminated.
I'm not sure where have I mistaken, but if You have some ideas, I'll be really grateful.