fix: JSON serialization of metrics::Examplar and `trace::span::Link…
#6268
| Job | Run time |
|---|---|
| 23s | |
| 1m 5s | |
| 2m 49s | |
| 55s | |
| 3m 28s | |
| 3m 46s | |
| 1m 8s | |
| 2m 1s | |
| 1m 13s | |
| 43s | |
| 1m 9s | |
| 3m 17s | |
| 3m 57s | |
| 2m 13s | |
| 6m 14s | |
| 2m 50s | |
| 2m 18s | |
| 1m 2s | |
| 4m 24s | |
| 44m 55s |