I have installed the update from focal-proposed. The update fixes most warnings, but I found at least two warnings that are still present in the output:
$ vagrant up Bringing machine 'default' up with 'virtualbox' provider... ==> default: Importing base box 'ubuntu/focal64'... ==> default: Matching MAC address for NAT networking... ==> default: Checking if box 'ubuntu/focal64' version '20200505.0.0' is up to date... ==> default: Setting the name of the VM: vagrant_sys ==> default: Clearing any previously set network interfaces... ==> default: Preparing network interfaces based on configuration... default: Adapter 1: nat ==> default: Forwarding ports... /usr/share/rubygems-integration/all/gems/vagrant-2.2.6/plugins/providers/virtualbox/action/forward_ports.rb:50: warning: Using the last argument as keyword parameters is deprecated; maybe ** should be added to the call /usr/share/rubygems-integration/all/gems/i18n-1.8.2/lib/i18n.rb:195: warning: The called method `t' is defined here default: 22 (guest) => 2222 (host) (adapter 1) ==> default: Running 'pre-boot' VM customizations... ==> default: Booting VM... ==> default: Waiting for machine to boot. This may take a few minutes... ... ==> default: Mounting shared folders... default: /vagrant => /data/vagrant /usr/share/rubygems-integration/all/gems/vagrant-2.2.6/bin/vagrant:200: warning: Using the last argument as keyword parameters is deprecated; maybe ** should be added to the call (eval):1: warning: The called method `error' is defined here -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1871685 Title: [SRU] vagrant spits out ruby deprecation warnings on every call To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/vagrant/+bug/1871685/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs