I did a fresh git clone on my Mac at home. I then ran mvn install. It failed with: [INFO] ------------------------------------------------------------------------ [INFO] Building Logback Examples Module [INFO] task-segment: [clean, install] [INFO] ------------------------------------------------------------------------ [INFO] [clean:clean] [INFO] [resources:resources] [INFO] Using default encoding to copy filtered resources. [INFO] [compiler:compile] [INFO] Compiling 58 source files to /Users/rgoers/projects/logback/ logback/logback-examples/target/classes [INFO] [resources:testResources] [INFO] Using default encoding to copy filtered resources. [INFO] [compiler:testCompile] [INFO] No sources to compile [INFO] [surefire:test] [INFO] No tests to run. [INFO] [jar:jar] [INFO] Building jar: /Users/rgoers/projects/logback/logback/logback- examples/target/logback-examples-0.9.18-SNAPSHOT.jar [INFO] Preparing source:jar [WARNING] Removing: jar from forked lifecycle, to prevent recursive invocation. [INFO] No goals needed for project - skipping [INFO] [source:jar {execution: default}] [INFO] Building jar: /Users/rgoers/projects/logback/logback/logback- examples/target/logback-examples-0.9.18-SNAPSHOT-sources.jar [INFO] [antrun:run {execution: default}] [INFO] Executing tasks [echo] Copying /Users/rgoers/.m2/repository/org/slf4j/slf4j-api/ 1.5.8/slf4j-api-1.5.8.jar to lib/ [INFO] ------------------------------------------------------------------------ [ERROR] BUILD ERROR [INFO] ------------------------------------------------------------------------ [INFO] Error executing ant tasks Embedded error: /Users/rgoers/projects/logback/logback/logback- examples/lib not found. [INFO] ------------------------------------------------------------------------