OAS3 is used at run time in 6 crates.

Depender (with downloads and own rev deps) OAS3 version
290 rustyproxy ^0.4.0
s2o ^0.4
openapi-mocker ^0.4.0
openapi-to-jsdoc ^0.4.0
jikken ^0.4.0
openapi-to-hurl ^0.4.0