"bad array subscript" error

[sanjioh]

Steps to reproduce the behavior

rbenv install 2.7.8

Expected vs. actual behavior

I get the error /usr/local/bin/ruby-build: line 1158: versions: bad array subscript, right after issuing the command, which I suppose should not happen. The error is not blocking (build completes successfully).

Logs

$ ruby-build --version
ruby-build 20241017

This happens on an Intel Mac with macOS 14.7, ruby-build installed from Homebrew.