Stability attributes on moved items can be confusing

[ExpHP]

https://doc.rust-lang.org/beta/std/ops/enum.Bound.html

says it has been around since 1.17.0, but

https://doc.rust-lang.org/std/ops/enum.Bound.html

does not exist. (and I can't use it on stable in the playground)

Digging more into it, it looks the type itself was indeed stabilized in 1.17.0, but in a different location (collections). I think this sort of thing can be confusing, and it raises the question; what version should it say here?

Is there precedent here? And if so (and if the current choice to use 1.17.0 is indeed following that precedent), should there perhaps be some prominent notice in the docs indicating the version at which Bound was moved to this location?

[RodBurman]

Bound seems to have disappeared from the collections::* doc after 1.22.0 and not appeared in std::* doc until 1.26.0, I am not sure why there is a gap. Also it appears that the c_void problem has been corrected.