Failure when trying to install LuaJIT

[hovsater]

Trying to install LuaJIT causes an error for me.

$ asdf install lua LuaJIT-2.0.5
/Users/kevinsjoberg/.asdf/plugins/lua/bin/../lib/utils.sh: line 38: version_info[2]: unbound variable
/Users/kevinsjoberg/.asdf/plugins/lua/bin/../lib/utils.sh: line 61: pkg_name: unbound variable
/Users/kevinsjoberg/.asdf/plugins/lua/bin/../lib/utils.sh: line 38: version_info[2]: unbound variable
/Users/kevinsjoberg/.asdf/plugins/lua/bin/../lib/utils.sh: line 61: pkg_name: unbound variable

os: macOS 11.2.1
bash: GNU bash, version 5.1.4(1)-release (x86_64-apple-darwin20.2.0)
asdf: v0.8.0-c6145d0