Index out of range in freshAlgebraicType in iTask compiler
On the nightly of 2020-02-17, the iTask compiler doesn't manage to compile iTasks.UI.Tune:
$ cpm project BasicAPIExamples.prj compile iTasks.UI.Tune
Compiling 'iTasks.UI.Tune'.
Run Time Error: index out of range
Stack trace:
freshAlgebraicType [module: type]
requirements_of_guarded_expressions;257 [module: type]
requirements;310 [module: type]
requirements;311 [module: type]
requirements_of_args;255 [module: type]
requirements;309 [module: type]
requirements_of_let_expr;562 [module: type]
requirements;311 [module: type]
requirements_of_algebraic_pattern;256 [module: type]
possibly_accumulate_reqs;558 [module: type]
requirements_of_algebraic_patterns;258 [module: type]
requirements_of_guarded_expressions;257 [module: type]
Error: Compiler crashed: /opt/clean/lib/exe/cocl-itasks