attached to the build already running on this worker
build01: building 7ckkj8xnjblln0k65472pv0frg8rp6k0-fonts.conf.drv
/nix/store/5927rrbd5zcapzk681b9m19hdahjmh31-fontconfig-2.18.2/etc/fonts/fonts.conf:2: warning: failed to load external entity "urn:fontconfig:fonts.dtd"
<!DOCTYPE fontconfig SYSTEM "urn:fontconfig:fonts.dtd">
                                                       ^