Imports of package user

PathSynopsis
errorsPackage errors implements functions to manipulate errors.
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
strconvPackage strconv implements conversions to and from string representations of basic data types.
syscallPackage syscall contains an interface to the low-level operating system primitives.
unsafePackage unsafe contains operations that step around the type safety of Go programs.