metrics-observer-prometheus is used at run time in 10 crates (of which 2 optionally). It is a direct run-time dependency in 2 crates. It's used only as a dev dependency in 1 crate.

Depender (with downloads and own rev deps) metrics-observer-prometheus version
1.5K 8 metrics-runtime optional ^0.1
ckb-metrics-runtime optional ^0.1