[exec] Progress (2): 808 B | 808 B                           Downloaded from apache.snapshots: http://repository.apache.org/snapshots/org/apache/flex/utilities/converter/wrapper-converter/1.0.0-SNAPSHOT/maven-metadata.xml (808 B at 1.6 kB/s)Downloaded from apache-plugins-snapshots: https://repository.apache.org/content/repositories/snapshots/org/apache/flex/utilities/converter/wrapper-converter/1.0.0-SNAPSHOT/maven-metadata.xml (808 B at 838 B/s)
     [exec] [INFO] Scanning for projects...
     [exec] Downloading from apache-plugins-release: https://repository.apache.org/content/repositories/releases/org/apache/royale/compiler/compiler-jburg-types/1.1.0/compiler-jburg-types-1.1.0.pom
     [exec] Downloading from central: https://repo.maven.apache.org/maven2/org/apache/royale/compiler/compiler-jburg-types/1.1.0/compiler-jburg-types-1.1.0.pom
     [exec] [WARNING] The POM for org.apache.royale.compiler:compiler-jburg-types:jar:1.1.0 is missing, no dependency information available
     [exec] Downloading from apache-plugins-release: https://repository.apache.org/content/repositories/releases/org/apache/royale/compiler/compiler-jburg-types/1.1.0/compiler-jburg-types-1.1.0.jar
     [exec] Downloading from central: https://repo.maven.apache.org/maven2/org/apache/royale/compiler/compiler-jburg-types/1.1.0/compiler-jburg-types-1.1.0.jar
     [exec] [ERROR] [ERROR] Some problems were encountered while processing the POMs:
     [exec] [ERROR] Unresolveable build extension: Plugin net.sourceforge.jburg:jburg-maven-plugin:1.10.4 or one of its dependencies could not be resolved: Could not find artifact org.apache.royale.compiler:compiler-jburg-types:jar:1.1.0 in apache-plugins-release (https://repository.apache.org/content/repositories/releases) @
     [exec] [ERROR] Unresolveable build extension: Plugin net.sourceforge.jburg:jburg-maven-plugin:1.10.4 or one of its dependencies could not be resolved: Could not find artifact org.apache.royale.compiler:compiler-jburg-types:jar:1.1.0 in apache-plugins-release (https://repository.apache.org/content/repositories/releases) @
     [exec]  @
     [exec] [ERROR] The build could not read 2 projects -> [Help 1]
     [exec] [ERROR]
     [exec] [ERROR]   The project org.apache.royale.compiler:compiler:0.9.6 (D:\Work\royale-sources\royale-compiler\royale_0.9.6\sources\compiler\pom.xml) has 1 error
     [exec] [ERROR]     Unresolveable build extension: Plugin net.sourceforge.jburg:jburg-maven-plugin:1.10.4 or one of its dependencies could not be resolved: Could not find artifact org.apache.royale.compiler:compiler-jburg-types:jar:1.1.0 in apache-plugins-release (https://repository.apache.org/content/repositories/releases) -> [Help 2]
     [exec] [ERROR]
     [exec] [ERROR]   The project org.apache.royale.compiler:debugger:0.9.6 (D:\Work\royale-sources\royale-compiler\royale_0.9.6\sources\debugger\pom.xml) has 1 error
     [exec] [ERROR]     Unresolveable build extension: Plugin net.sourceforge.jburg:jburg-maven-plugin:1.10.4 or one of its dependencies could not be resolved: Could not find artifact org.apache.royale.compiler:compiler-jburg-types:jar:1.1.0 in apache-plugins-release (https://repository.apache.org/content/repositories/releases) -> [Help 2]
     [exec] [ERROR]
     [exec] [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
     [exec] [ERROR] Re-run Maven using the -X switch to enable full debug logging.
     [exec] [ERROR]
     [exec] [ERROR] For more information about the errors and possible solutions, please read the following articles:
     [exec] [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/ProjectBuildingException
     [exec] [ERROR] [Help 2] http://cwiki.apache.org/confluence/display/MAVEN/PluginManagerException

BUILD FAILED
D:\Work\royale-sources\royale-compiler\releasesteps.xml:157: exec returned: 1