After an update the building does not work anymore `@ararslan` `@staticfloat` `@StefanKarpinski`

The error message is at the bottom of the log, due to Stderr output is shown after the build log rather than inline :

Could not parse project C:\Users\travis\build\andreasvarga\MatrixPencils.jl\Project.toml: CompositeException(Any[Pkg.TOML.ParserError(434, 435, “expected ], but found P”)])