The old version was:
rebar 3.15.2
and it couldn't work with Erlang/OTP 25
This new version is
rebar 3.18.0
compiled from tag 3.18.0 from
https://github.com/erlang/rebar3
using erlang:22-slim docker image
To compile ejabberd using rebar3 and ancient Erlang 19.3-21.3,
you need a rebar3 binary compiled with an old Erlang.
If your operating system doesn't provide one, you can download
the old one included in ejabberd 21.12, available at:
https://github.com/processone/ejabberd/raw/21.12/rebar3
