Imports of package robustio

PathSynopsis
errorsPackage errors implements functions to manipulate errors.
math/randPackage rand implements pseudo-random number generators suitable for tasks such as simulation, but it should not be used for security-sensitive work.
osPackage os provides a platform-independent interface to operating system functionality.
syscallPackage syscall contains an interface to the low-level operating system primitives.
timePackage time provides functionality for measuring and displaying time.