rust: Attempt to fix build issues on buildbots.
--- trunk/dports/lang/rust/Portfile 2013-04-24 18:49:28 UTC (rev 105551)
+++ trunk/dports/lang/rust/Portfile 2013-04-24 18:50:41 UTC (rev 105552)
@@ -142,6 +142,7 @@
CC=${configure.cc} \
CXX=${configure.cxx} \
CPP=${configure.cc}
+use_parallel_build no
# TODO: Add path-style dependency on python, whenever test dependencies
# are implemented (#38208). Not critical, since all supported versions