FIX: doctest heisenfailure on execution time
FIX: doctest heisenfailure on execution time

karandesai-96/joblib,aabadie/joblib,tomMoral/joblib,lesteve/joblib,aabadie/joblib,karandesai-96/joblib,tomMoral/joblib,joblib/joblib,lesteve/joblib,joblib/joblib