sal-broker-impl build (mvn) fails to download 2 files

The sal-broker-impl build step tries and fails to fetch two files from oss.sonatype.org, delaying the build process:

[INFO] Building sal-broker-impl 1.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] — maven-clean-plugin:2.5:clean (default-clean) @ sal-broker-impl —
[INFO] Deleting /home/virl/odl/controller/opendaylight/md-sal/sal-dom-broker/target
[INFO] Deleting /home/virl/odl/controller/opendaylight/md-sal/sal-dom-broker/src/main/xtend-gen (includes = [**], excludes = [])
[INFO]
[INFO] — xtend-maven-plugin:2.4.3:compile (default) @ sal-broker-impl —
Downloading: https://oss.sonatype.org/content/repositories/snapshots/com/google/guava/guava/maven-metadata.xml
Nov 04, 2013 2:10:04 PM org.apache.commons.httpclient.HttpMethodDirector executeWithRetry
INFO: I/O exception (java.net.ConnectException) caught when processing request: Connection timed out
Nov 04, 2013 2:10:04 PM org.apache.commons.httpclient.HttpMethodDirector executeWithRetry
INFO: Retrying request
Nov 04, 2013 2:11:08 PM org.apache.commons.httpclient.HttpMethodDirector executeWithRetry
INFO: I/O exception (java.net.ConnectException) caught when processing request: Connection timed out
Nov 04, 2013 2:11:08 PM org.apache.commons.httpclient.HttpMethodDirector executeWithRetry
INFO: Retrying request
Nov 04, 2013 2:12:12 PM org.apache.commons.httpclient.HttpMethodDirector executeWithRetry
INFO: I/O exception (java.net.ConnectException) caught when processing request: Connection timed out
Nov 04, 2013 2:12:12 PM org.apache.commons.httpclient.HttpMethodDirector executeWithRetry
INFO: Retrying request
[WARNING] Could not transfer metadata com.google.guava:guava/maven-metadata.xml from/to sonatype-nexus-snapshots (https://oss.sonatype.org/content/repositories/snapshots): Connection timed out
Downloading: https://oss.sonatype.org/content/repositories/snapshots/org/antlr/antlr-runtime/maven-metadata.xml
Nov 04, 2013 2:14:21 PM org.apache.commons.httpclient.HttpMethodDirector executeWithRetry
INFO: I/O exception (java.net.ConnectException) caught when processing request: Connection timed out
Nov 04, 2013 2:14:21 PM org.apache.commons.httpclient.HttpMethodDirector executeWithRetry
INFO: Retrying request
Nov 04, 2013 2:15:25 PM org.apache.commons.httpclient.HttpMethodDirector executeWithRetry
INFO: I/O exception (java.net.ConnectException) caught when processing request: Connection timed out
Nov 04, 2013 2:15:25 PM org.apache.commons.httpclient.HttpMethodDirector executeWithRetry
INFO: Retrying request