cron #next_time loop breaker issue about fugit HOT 6 CLOSED

234143 _ yawara o ~/w/fugit (master|*) > chruby 2.7
ruby set to /home/jmettraux/.rubies/ruby-2.7.1/
234146 _ yawara o ~/w/fugit (master|*) > bxr t.rb
#<EtOrbi::EoTime:0x0000064ddd4d4578 @seconds=1631660400.0, @zone=#<TZInfo::DataTimezone: Asia/Tokyo>, @time=nil>
"2021-09-15 08:00:00 +0900"
234157 _ yawara o ~/w/fugit (master|*) >
234159 _ yawara o ~/w/fugit (master|*) >
234159 _ yawara o ~/w/fugit (master|*) > export TZ="America/Santiago"
104204 _ yawara o ~/w/fugit (master|*) > bxr t.rb
Traceback (most recent call last):
        3: from t.rb:5:in `<main>'
        2: from /home/jmettraux/w/fugit/lib/fugit/cron.rb:236:in `next_time'
        1: from /home/jmettraux/w/fugit/lib/fugit/cron.rb:236:in `loop'
/home/jmettraux/w/fugit/lib/fugit/cron.rb:238:in `block in next_time': too many loops for "0 8 15 * *" #next_time, breaking, cron expression most likely invalid (Feb 30th like?), please fill an issue at https://git.io/fjJC9 (RuntimeError)
104207 _ yawara o ~/w/fugit (master|*) [1] > rv
ruby 2.7.1p83 (2020-03-31 revision a0c7c23c9c) [x86_64-openbsd6.7]
104211 _ yawara o ~/w/fugit (master|*) > uname -a
OpenBSD yawara 6.9 GENERIC.MP#4 amd64
104307 _ yawara o ~/w/fugit (master|*) > bundle list
Gems included by the bundle:
  * chronic (0.10.2)
  * concurrent-ruby (1.1.9)
  * diff-lcs (1.4.4)
  * et-orbi (1.2.4)
  * fugit (1.5.0)
  * raabro (1.4.0)
  * rspec (3.10.0)
  * rspec-core (3.10.1)
  * rspec-expectations (3.10.1)
  * rspec-mocks (3.10.2)
  * rspec-support (3.10.2)
  * tzinfo (2.0.4)
Use `bundle info` to print more detailed information about a gem