Project Contains Errors. Automated Testing Not Possible!!

Tue Dec 11 23:12:05 CET 2018
Buildfile: /Volumes/data/fontys/modules/alda/2018/practical_students/doc/aldabuild.xml

compile:
    [javac] Compiling 6 source files to /Volumes/data/fontys/modules/alda/2018/practical_students/g08/trunk/02_sorting/Sorting/build/classes
    [javac] /Volumes/data/fontys/modules/alda/2018/practical_students/g08/trunk/02_sorting/Sorting/src/basicscorts/InsertionSorter.java:14: error: InsertionSorter is not abstract and does not override abstract method sort(Comparator) in Sort
    [javac] public class InsertionSorter  implements Sort{
    [javac]        ^
    [javac]   where T is a type-variable:
    [javac]     T extends Object declared in class InsertionSorter
    [javac] Note: Some input files use unchecked or unsafe operations.
    [javac] Note: Recompile with -Xlint:unchecked for details.
    [javac] 1 error