Due to an influx of spam, we have had to temporarily disable account registrations. Please write an email to accountsupport@archlinux.org, with your desired username, if you want to get access. Sorry for the inconvenience.
Reported-by: https://archriscv.felixc.at/.status/log.htm?url=logs/mermaid-cli/mermaid-cli-11.4.0-2.log