unison fails to build

[vishketan@…]

sudo port install unison +aqua     
--->  Computing dependencies for unison
--->  Fetching archive for unison
--->  Attempting to fetch unison-2.32.52_1+aqua.darwin_11.x86_64.tbz2 from http://packages.macports.org/unison
--->  Fetching unison
--->  Verifying checksum(s) for unison
--->  Extracting unison
--->  Applying patches to unison
--->  Configuring unison
--->  Building unison
--->  Staging unison into destroot
Error: Target org.macports.destroot returned: error copying "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_net_unison/unison/work/unison-2.32.52/uimacnew/build/Unison.app": no such file or directory
Log for unison is at: /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_net_unison/unison/main.log
Error: Status 1 encountered during processing.
To report a bug, see <http://guide.macports.org/#project.tickets>

[ryandesign (Ryan Carsten Schmidt)]

Duplicate of #25981.