Fabric warnings when starting a non-fabric child

Issue

I'm seeing the following errors when I start up a child container:

Please wait while Fabric8 is loading...
 79% [========================================================>               ]ERROR: Bundle io.fabric8.fabric-zookeeper [53] Error starting mvn:io.fabric8/fabric-zookeeper/1.0.0.redhat-379 (org.osgi.framework.BundleException: Unresolved constraint in bundle io.fabric8.fabric-zookeeper [53]: Unable to resolve 53.0: missing requirement [53.0] osgi.wiring.package; (&(osgi.wiring.package=com.google.common.base)(version>=15.0.0)(!(version>=16.0.0))))
org.osgi.framework.BundleException: Unresolved constraint in bundle io.fabric8.fabric-zookeeper [53]: Unable to resolve 53.0: missing requirement [53.0] osgi.wiring.package; (&(osgi.wiring.package=com.google.common.base)(version>=15.0.0)(!(version>=16.0.0)))
    at org.apache.felix.framework.Felix.resolveBundleRevision(Felix.java:4225)
    at org.apache.felix.framework.Felix.startBundle(Felix.java:2063)
    at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1317)
    at org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:304)
    at java.lang.Thread.run(Thread.java:744)
 91% [=================================================================>      ]ERROR: Bundle io.fabric8.fabric-boot-commands [63] Error starting mvn:io.fabric8/fabric-boot-commands/1.0.0.redhat-379 (org.osgi.framework.BundleException: Unresolved constraint in bundle io.fabric8.fabric-boot-commands [63]: Unable to resolve 63.0: missing requirement [63.0] osgi.wiring.package; (&(osgi.wiring.package=com.google.common.base)(version>=15.0.0)(!(version>=16.0.0))))
org.osgi.framework.BundleException: Unresolved constraint in bundle io.fabric8.fabric-boot-commands [63]: Unable to resolve 63.0: missing requirement [63.0] osgi.wiring.package; (&(osgi.wiring.package=com.google.common.base)(version>=15.0.0)(!(version>=16.0.0)))
    at org.apache.felix.framework.Felix.resolveBundleRevision(Felix.java:4225)
    at org.apache.felix.framework.Felix.startBundle(Felix.java:2063)
    at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1317)
    at org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:304)
    at java.lang.Thread.run(Thread.java:744)
 92% [==================================================================>     ]ERROR: Bundle io.fabric8.fabric-core [65] Error starting mvn:io.fabric8/fabric-core/1.0.0.redhat-379 (org.osgi.framework.BundleException: Unresolved constraint in bundle io.fabric8.fabric-core [65]: Unable to resolve 65.0: missing requirement [65.0] osgi.wiring.package; (&(osgi.wiring.package=com.google.common.base)(version>=15.0.0)(!(version>=16.0.0))))
org.osgi.framework.BundleException: Unresolved constraint in bundle io.fabric8.fabric-core [65]: Unable to resolve 65.0: missing requirement [65.0] osgi.wiring.package; (&(osgi.wiring.package=com.google.common.base)(version>=15.0.0)(!(version>=16.0.0)))
    at org.apache.felix.framework.Felix.resolveBundleRevision(Felix.java:4225)
    at org.apache.felix.framework.Felix.startBundle(Felix.java:2063)
    at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1317)
    at org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:304)
    at java.lang.Thread.run(Thread.java:744)
ERROR: Bundle io.fabric8.fabric-commands [66] Error starting mvn:io.fabric8/fabric-commands/1.0.0.redhat-379 (org.osgi.framework.BundleException: Unresolved constraint in bundle io.fabric8.fabric-commands [66]: Unable to resolve 66.0: missing requirement [66.0] osgi.wiring.package; (&(osgi.wiring.package=com.google.common.base)(version>=15.0.0)(!(version>=16.0.0))))
org.osgi.framework.BundleException: Unresolved constraint in bundle io.fabric8.fabric-commands [66]: Unable to resolve 66.0: missing requirement [66.0] osgi.wiring.package; (&(osgi.wiring.package=com.google.common.base)(version>=15.0.0)(!(version>=16.0.0)))
    at org.apache.felix.framework.Felix.resolveBundleRevision(Felix.java:4225)
    at org.apache.felix.framework.Felix.startBundle(Felix.java:2063)
    at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1317)
    at org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:304)
    at java.lang.Thread.run(Thread.java:744)

Why?