Doesn't seem to work with threads

[seren]

Everything works well normally, however when an exception occurs within a thread, the Thread exits silently rather than dropping into pry.

require 'pry-rescue'
require 'pry'

# Test 1. Pry-rescue works.
0/0

# Test 2. Pry-rescue doesn't drop into pry.
Thread.new do
  puts "1st crash thread starting: #{Thread.current}"
  0/0
  puts "1st crash thread finishing: #{Thread.current}"
end

# Test 3. Binding.pry does drop into pry.
Thread.new do
  puts "2nd crash thread starting: #{Thread.current}"
  begin
    0/0
  rescue => e
    binding.pry
  end
  puts "2nd crash thread finishing: #{Thread.current}"
end

sleep 1 until Thread.list.count < 2
puts "main thread finishing"