Free disk space continues to be an issue, I’ve deleted 50Gb of backups but df -h has yet to recognise the new free space. This would not be an issue apart from Rust and Cargo-c appear to want to use up all available free disk space.
I also noted a discrepancy between the Pkg Info command to re-port out of date packages/ports and those that postmaster -da then tried to build as being out of date.
If I manage to resolve these issues I will update this post.