`use-rustls` and `use-rustls-ring` conflict

[TheBlueMatt]

If both features are enabled build fails.

[tnull]

They are mutually exclusive by design, there is no way around it.

[TheBlueMatt]

Can we just use ring if both are set? use-rustls to me implies "use rustls and defaults" use-rustls-ring implies to me "use rustls and override defaults to use ring". If one depenency sets the first and another dependency sets the second, that would imply to me we should use ring.

[tnull]

Can we just use ring if both are set? use-rustls to me implies "use rustls and defaults" use-rustls-ring implies to me "use rustls and override defaults to use ring". If one depenency sets the first and another dependency sets the second, that would imply to me we should use ring.

Yeah, I guess. All very painful and introducing such hidden defaults somewhere in the stack might not always result in the expected behavior for the user. But I guess it's the one option we have to fix this, now opened #183