Feed update fails

I have a workstation set up on RHEL 7.9
After installing the pre-requisite packages and packages listed for Red Hat on

I then successfully cloned the openwrt repo in January 2021 and ran
./scripts/feeds update -a
./scripts/feeds install -a

This successfully set up the build environment and I have been building successfully since.

This week, I copied down a new clone from the same url and when running the feeds update, I am now seeing the following failures:

Create index file './feeds/packages.index'
Checking 'working-make'... failed.
Checking 'case-sensitive-fs'... ok.
Checking 'proper-umask'... ok.
Checking 'gcc'... failed.
Checking 'working-gcc'... ok.
Checking 'g++'... failed.
Checking 'working-g++'... ok.
Checking 'ncurses'... ok.
Checking 'perl-data-dumper'... ok.
Checking 'perl-thread-queue'... ok.
Checking 'tar'... ok.
Checking 'find'... ok.
Checking 'bash'... ok.
Checking 'xargs'... ok.
Checking 'patch'... ok.
Checking 'diff'... ok.
Checking 'cp'... ok.
Checking 'seq'... ok.
Checking 'awk'... ok.
Checking 'grep'... ok.
Checking 'egrep'... ok.
Checking 'getopt'... ok.
Checking 'stat'... ok.
Checking 'unzip'... ok.
Checking 'bzip2'... ok.
Checking 'wget'... ok.
Checking 'install'... ok.
Checking 'perl'... ok.
Checking 'python2-cleanup'... ok.
Checking 'python'... ok.
Checking 'python3'... ok.
Checking 'git'... ok.
Checking 'file'... ok.
Checking 'rsync'... ok.
Checking 'which'... ok.
Checking 'ldconfig-stub'... ok.

Why do these suddenly now fail:
Checking 'working-make'... failed.
Checking 'gcc'... failed.
Checking 'g++'... failed.

If I already have these packages installed and there is a valid command-line execution path to them ?
What update since January to the repo has been changed that would cause this?