Should come right after the erroring call so nothing else has a chance to overwrite errno
5RRMWZDMA7MKGTMAMXZXAVP5OQF6RDT7DVLUQ5QLWVZURHD7WFBAC
MIFGZCATY7VCUPEFQCXQDW5S6WDS2WEPVJOVREK4W7XQUAKTJKLAC
6XZIQSMIVP2GZ5S3UCKEVNDSLTHSQEVSXLV4UIFF3G3SRCGJPXYAC
7B74AT3BXYB7PVW4F6SGQNPMHOU5TEV5TZ54CG6VSQI46XSEKWXQC
2QL2H4REDZT46FI3LQ4RYEMQYZBNBK3IC3KH3XERAJU3NCZWMNYQC
perror("startup: display_add_socket_auto");
perror("startup: socket");
perror("startup: backend_start");