| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/Sirupsen/logrus | |
| github.com/docker/docker/pkg/archive | Package archive provides helper functions for dealing with archive files. |
| github.com/docker/docker/pkg/stringid | Package stringid provides helper functions for dealing with string identifiers |
| io/ioutil | Package ioutil implements some I/O utility functions. |
| os | Package os provides a platform-independent interface to operating system functionality. |
| regexp | Package regexp implements regular expression search. |
| runtime | Package runtime contains operations that interact with Go's runtime system, such as functions to control goroutines. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |