| encoding/base64 | Package base64 implements base64 encoding as specified by RFC 4648. |
| github.com/gogo/protobuf/proto | Package proto converts data structures to and from the wire format of protocol buffers. |
| github.com/lightstep/lightstep-tracer-go/lightsteppb | |
| github.com/opentracing/opentracing-go | |
| github.com/opentracing/opentracing-go/log | |
| math/rand | Package rand implements pseudo-random number generators suitable for tasks such as simulation, but it should not be used for security-sensitive work. |
| strconv | Package strconv implements conversions to and from string representations of basic data types. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |
| sync | Package sync provides basic synchronization primitives such as mutual exclusion locks. |
| time | Package time provides functionality for measuring and displaying time. |