On my local environment using m2e 1.6, I see some failure starting eclipse :

 Unresolved requirement: Require-Bundle: org.jboss.tools.jst.web.kb; visibility:="reexport"
                  -> Bundle-SymbolicName: org.jboss.tools.jst.web.kb; bundle-version="3.6.0.CR1-v20140711-0354-B645"; singleton:="true"
                     org.jboss.tools.jst.web.kb [989]
                       Unresolved requirement: Import-Package: org.codehaus.plexus.util

plexus is provided by the m2e runtime, so should not be a dependency of jst (which was added by this commit).

Apache commons-io should be used in RemoteFileManager instead, as it is available in eclipse orbit. It provides the same capabilities :

• copy(InputStream, OutputStream)
• closeQuietly(...)

I'm not entirely sure why I see the error in my workspace, plexus should be available, but the real point here, is that this dependency should never be there in the first place.