@Dennis has something about TIO changed recently? Last time I checked with this link the test driver was emitting all passes, now I'm getting a lot of FAILURE, usually with an exit code of 127. This is not unique to this version of the test driver for the 'add a language to a polyglot' challenge.
https://tio.run/##zTvLdtrKluNo9R@cSVlwIgnQC4wfCLCdxL7tc5Jjd@wkdwWII0QBivUgkjA4hKyedq8e3Pmd9PD@x532V9wfOb13lQTYYCdndfdaDUYqVe2q2q/ajyq5a8fD33/P4Yech97twAsTktA4Ib3IvaGRRp7dkkPbjavliiAwqCjsjR03GJBkSIkbjMYJ6bsejQXHTkiTjNJRNCyQHImo3eNgQj@MCHYh/rVHXOKMRqTr2UPNIZ4LsCfGHsDHoY8wCY1GEYVrTAJKeyQeUcftuw6bi9BpQ…