$ git log -1 v0.21.0 -- lib/dtas/nonblock.rb found last record of `lib/dtas/nonblock.rb' in the following commit: 773bfa2 get rid of DTAS::Nonblock wrapper for Ruby <= 2.0 (2022-01-23)git clone git://80x24.org/dtas.git git clone https://80x24.org/dtas.git