ant-libp2p-ping is used at run time in 2 crates (of which 2 optionally). It's used only as a dev dependency in 3 crates.

Depender (with downloads and own rev deps) ant-libp2p-ping version
ant-libp2p optional ^0.45.1
ant-libp2p-metrics optional ^0.45.1
3 ant-libp2p-relay dev ^0.45.1
1 ant-libp2p-connection-limits dev ^0.45.1
2 ant-libp2p-dcutr dev ^0.45.1