starting VDE switch for network 1
pty_allocate(nonfatal): posix_openpt(): No such file or directory at /nix/store/qxx2x0xqsdv3w881qbr4mkxs4b35vhq6-perl-IO-Tty-1.12/lib/perl5/site_perl/5.22.2/i686-linux-thread-multi/IO/Pty.pm line 24.
pty_allocate(nonfatal): getpt(): No such file or directory at /nix/store/qxx2x0xqsdv3w881qbr4mkxs4b35vhq6-perl-IO-Tty-1.12/lib/perl5/site_perl/5.22.2/i686-linux-thread-multi/IO/Pty.pm line 24.
pty_allocate(nonfatal): openpty(): No such file or directory at /nix/store/qxx2x0xqsdv3w881qbr4mkxs4b35vhq6-perl-IO-Tty-1.12/lib/perl5/site_perl/5.22.2/i686-linux-thread-multi/IO/Pty.pm line 24.
pty_allocate(nonfatal): open(/dev/ptmx): No such file or directory at /nix/store/qxx2x0xqsdv3w881qbr4mkxs4b35vhq6-perl-IO-Tty-1.12/lib/perl5/site_perl/5.22.2/i686-linux-thread-multi/IO/Pty.pm line 24.
Cannot open a pty at /nix/store/s2wqrd1k7rn8pj2s348rzhigm0bwxfsd-nixos-test-driver/bin/.nixos-test-driver-wrapped line 32.
cleaning up
builder for ‘/nix/store/3c6fmha0zy3fnkyy8rjcls04ljznyb7f-vm-test-run-installer-btrfsSimple.drv’ failed with exit code 2