Comment # 2 on bug 1112817 from Frank Kruger

(In reply to Wolfgang Rosenauer from comment #0)
> Firefox 63.0 as to be released 2018-10-23 requires rust >= 1.28 to build.
> Tumbleweed's current rust version is 1.26.2 only.

Does this, in turn, mean that there won't be any Firefox 63 for Leap 15.0
through the mozilla repo?