The method Time#succ was marked as obsolete in Ruby 1.9.3 and whilst it remains Rails has to patch Range#each and Range#step to prevent logs from being filled with the deprecation messages (see https://github.com/rails/rails/pull/11474). It's been over 8 years now which seems like a more than adequate period to wait before removal.
Updated by shevegen (Robert A. Heiler) about 4 years ago
If this is true, perhaps ruby core forgot about it.
I had a look at the current docu for Time:
The documentation reads:
"Returns a new Time object, one second later than time. #succ is obsolete
since 1.9.2 for time is not a discrete value."
So I am inclined to agree with Andrew - either it is indeed obsolete, in
which case it may be time to remove it; and if it is not obsolete, then
the documentation should change, IMO.
(On a side note, perhaps there could be a simple way to ask Ruby which
methods may be deprecated or so... Kernel#deprecated_methods? or something,
but anyway, I should file an own issue request for that; I just don't
know if other people may find that useful. Sorry for side-tracking from
the main issue thread here for a moment!)