null needed by property jack.transformations.boost-locked-region-priority.reset

[Ion Tarafdar]

This is what I get while building

Ensure Jack server is installed and started

Jack server already installed in "/home/iont/.jack-server"

Launching Jack server java -XX:MaxJavaStackTraceDepth=-1 -Djava.io.tmpdir=/tmp -Dfile.encoding=UTF-8 -XX:+TieredCompilation -Xmx4g -cp /home/iont/.jack-server/launcher.jar com.android.jack.launcher.ServerLauncher

Building with Jack: out_x64/debug/target/common/obj/JAVA_LIBRARIES/services.net_intermediates/classes.jack

ERROR: Lcom/android/server/am/ActivityManagerService; not found needed by property jack.transformations.boost-locked-region-priority.classname

ERROR: Lcom/android/server/am/ActivityManagerService; not found needed by property jack.transformations.boost-locked-region-priority.request

ERROR: Lcom/android/server/am/ActivityManagerService; not found needed by property jack.transformations.boost-locked-region-priority.reset

ERROR: null needed by property jack.transformations.boost-locked-region-priority.request

ERROR: null needed by property jack.transformations.boost-locked-region-priority.reset

build/core/java.mk:707: recipe for target 'out_x64/debug/target/common/obj/JAVA_LIBRARIES/services.net_intermediates/classes.jack' failed

make: *** [out_x64/debug/target/common/obj/JAVA_LIBRARIES/services.net_intermediates/classes.jack] Error 41

Never seen this one before. What's going on?