This is an issue in ruby-curses, not irqtop. See https://bugs.debian.org /cgi-bin/bugreport.cgi?bug=958973
Interestingly this no more happens on Debian Unstable/Testing. This seems to have fixed upstream a few months ago: commit df3f52a6331f1a47af9933b77311a8650727d8d1 Author: nagachika <nagach...@ruby-lang.org> Date: 2020-09-29 22:43:25 +0900 merge revision(s) 996af2ce086249e904b2ce95ab2fcd1de7d757be: [Backport #16345] [Backport #17000] Disable deprecation warning by the default [Feature #16345] And `-w` option turns it on. That commit likely made it into ruby 2.7.2, which hit Debian Unstable in mid-October 2020. Nevertheless this obviously needs to be fixed in ruby-curses. ** Bug watch added: Debian Bug tracker #958973 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=958973 ** Also affects: ruby-curses (Ubuntu) Importance: Undecided Status: New ** Also affects: ruby-curses (Debian) via https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=958973 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1907932 Title: ruby-curses: Emits warning: "rb_safe_level will be removed in Ruby 3.0", affects at least irqtop To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/iptables-netflow/+bug/1907932/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs