| errors | Package errors implements functions to manipulate errors. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| google.golang.org/protobuf/encoding/protowire | Package protowire parses and formats the raw wire encoding. |
| google.golang.org/protobuf/runtime/protoiface | Package protoiface contains types referenced or implemented by messages. |
| io | Package io provides basic interfaces to I/O primitives. |
| sort | Package sort provides primitives for sorting slices and user-defined collections. |
| sync/atomic | Package atomic provides low-level atomic memory primitives useful for implementing synchronization algorithms. |
| unsafe | Package unsafe contains operations that step around the type safety of Go programs. |