Brew tap for cromshell@0.5.3 appears to be broken

[jamesemery]

I have noticed some connectivity issues for the python cromshell environment with some cromsehll servers that otherwise work on the older cromshell... however i have noticed that I can no longer install the legacy cromshell threw brew:

brew install cromshell@0.5.3
==> Downloading https://formulae.brew.sh/api/formula.jws.json

Error: cromshell@0.5.3: /usr/local/Homebrew/Library/Taps/broadinstitute/homebrew-dsp/Formula/cromshell@0.5.3.rb:1: `@0' is not allowed as an instance variable name
/usr/local/Homebrew/Library/Taps/broadinstitute/homebrew-dsp/Formula/cromshell@0.5.3.rb:1: syntax error, unexpected end-of-input
class Cromshell@053 < Formula
               ^