for non-standard things in the check directory

Found the following files/directories:
  ‘lambda.pdf’ ‘qqplot.pdf’
Found the following files/directories:
  ‘lambda.pdf’ ‘qqplot.pdf’
Found the following files/directories:
  ‘lambda.pdf’ ‘qqplot.pdf’
Found the following files/directories:
  ‘lambda.pdf’ ‘qqplot.pdf’
Found the following files/directories:
  ‘lambda.pdf’ ‘qqplot.pdf’
Found the following files/directories:
  ‘lambda.pdf’ ‘qqplot.pdf’