2.20.1

• Fixed problem when tests couldn't be started with root user and glibc 2.28.
• Fixed problem with too verbose test for debootstrap(8) command.
• Fixed problem with tests for fts_* functions when started on btrfs
  filesystem.
• The debootstrap(8) command honors FAKECHROOT_EXTRA_LIBRARY_PATH
  environment variable too.
• Workaround has been added for systemd package installed by
  debootstrap(8) command.
• Better support for link-time optimizer. Run
  ./configure EXTRA_CFLAGS='-Wall -flto' EXTRA_LDFLAGS='-flto' AR=gcc-ar NM=gcc-nm RANLIB=gcc-ranlib
  to use it.