Cannot remove linked toolchain

[RalfJung]

I added a toolchain via rustup toolchain link myrust <path> that I now want to remove. However, rustup toolchain uninstall myrust says info: no toolchain installed for 'myrust'. It seems that either it is impossible to uninstall ("unlink") a linked toolchain, or at least that feature it so well hidden that it is very hard to find.

[brson]

Hm, that's not expected behavior. If there's a symlink under ~/.cargo/toolchains/myrust, rustup should remove it in this case.

[RalfJung]

I suppose you mean ~/.rustup/...? Yes, there is such a symlink.

[RalfJung]

I tested this again and now it works.

I think what may have happened is that the toolchain symlink became stale when I did a ./x.py clean, and now that I have a compiler built again the symlink works again. Not sure what the intended behavior is in this case, but I'd argue that uninstalling a toolchain should work even if the symlink no longer points to a valid toolchain.

EDIT: Indeed I can reproduce the issue by putting a dead symlink (not pointing to anything) into the toolchain directory and trying to uninstall it.