Ruby Thread#raise raises at wherever the thread happens to be

1. thread_raise.rb

require 'thread'

t = Thread.new{
  sleep 0.1
  sleep 0.1
  sleep 0.1
  sleep 0.1
  sleep 0.1
}

sleep rand(4) * 0.1

t.raise
t.join

2. output.txt

➔ ruby thread_raise.rb 
thread_raise.rb:6:in `sleep': unhandled exception
	from thread_raise.rb:6:in `block in <main>'
➔ ruby thread_raise.rb
thread_raise.rb:7:in `sleep': unhandled exception
	from thread_raise.rb:7:in `block in <main>'
➔ ruby thread_raise.rb
thread_raise.rb:5:in `sleep': unhandled exception
	from thread_raise.rb:5:in `block in <main>'
➔ ruby thread_raise.rb
thread_raise.rb:5:in `sleep': unhandled exception
	from thread_raise.rb:5:in `block in <main>'