Maven-compiler-plugin 3.1 useIncrementalCompilation=false test

useIncrementalCompilation=false

Repeated executions of "mvn install -DskipTests -Dcheckstyle.skip=true" of
https://github.com/apache/incubator-calcite
with <useIncrementalCompilation>false</useIncrementalCompilation> are _faster_ than in default mode.
It looks like the setting is inversed somehow.

The issue is described here:
  http://stackoverflow.com/questions/17944108/maven-compiler-plugin-always-detecting-a-set-of-sources-as-stale
  https://jira.codehaus.org/browse/MCOMPILER-209

No "Compiling ... source files to..." messages during the build.

Total time: 17.509 s

Calcite ............. SUCCESS [  1.404 s]
Calcite Avatica ..... SUCCESS [  1.419 s]
Calcite Linq4j ...... SUCCESS [  1.091 s]
Calcite Core ........ SUCCESS [  6.042 s]
Calcite Examples .... SUCCESS [  0.051 s]
Calcite Example CSV . SUCCESS [  0.832 s]
Calcite MongoDB ..... SUCCESS [  0.882 s]
Calcite Plus ........ SUCCESS [  1.425 s]
Calcite Spark ....... SUCCESS [  1.350 s]
Calcite Splunk ...... SUCCESS [  0.777 s]
Calcite Ubenchmark .. SUCCESS [  2.074 s]

useIncrementalCompilation=true

The same "mvn install -DskipTests -Dcheckstyle.skip=true" with
default <useIncrementalCompilation>false</useIncrementalCompilation>

In default mode, all the modules are recompiled:
  "Compiling 884 source files to .." and friends are in logs.

Total time: 26.798 s

Calcite ............. SUCCESS [ 1.406 s]
Calcite Avatica ..... SUCCESS [ 2.039 s]
Calcite Linq4j ...... SUCCESS [ 5.717 s]
Calcite Core ........ SUCCESS [10.067 s]
Calcite Examples .... SUCCESS [ 0.054 s]
Calcite Example CSV . SUCCESS [ 0.919 s]
Calcite MongoDB ..... SUCCESS [ 0.929 s]
Calcite Plus ........ SUCCESS [ 1.506 s]
Calcite Spark ....... SUCCESS [ 1.273 s]
Calcite Splunk ...... SUCCESS [ 0.879 s]
Calcite Ubenchmark .. SUCCESS [ 1.828 s]