$ sudo port install rabbitmq-server
--->  Computing dependencies for rabbitmq-server
--->  Dependencies to be installed: erlang
--->  Fetching archive for erlang
--->  Attempting to fetch erlang-18.0_1+hipe+ssl.darwin_14.x86_64.tbz2 from http://packages.macports.org/erlang
--->  Attempting to fetch erlang-18.0_1+hipe+ssl.darwin_14.x86_64.tbz2.rmd160 from http://packages.macports.org/erlang
--->  Installing erlang @18.0_1+hipe+ssl
--->  Activating erlang @18.0_1+hipe+ssl
--->  Cleaning erlang
--->  Fetching archive for rabbitmq-server
--->  Attempting to fetch rabbitmq-server-3.1.5_2.darwin_14.noarch.tbz2 from http://packages.macports.org/rabbitmq-server
--->  Attempting to fetch rabbitmq-server-3.1.5_2.darwin_14.noarch.tbz2 from http://lil.fr.packages.macports.org/rabbitmq-server
--->  Attempting to fetch rabbitmq-server-3.1.5_2.darwin_14.noarch.tbz2 from http://nue.de.packages.macports.org/macports/packages/rabbitmq-server
--->  Fetching distfiles for rabbitmq-server
--->  Attempting to fetch rabbitmq-server-3.1.5.tar.gz from http://distfiles.macports.org/rabbitmq-server
--->  Attempting to fetch rabbitmq-server-generic-unix-3.1.5.tar.gz from http://distfiles.macports.org/rabbitmq-server
--->  Verifying checksums for rabbitmq-server
--->  Extracting rabbitmq-server
--->  Configuring rabbitmq-server
--->  Building rabbitmq-server
Error: org.macports.build for port rabbitmq-server returned: command execution failed
Please see the log file for port rabbitmq-server for details:
    /opt/local/var/macports/logs/_opt_local_var_macports_sources_distfiles.macports.org_ports_net_rabbitmq-server/rabbitmq-server/main.log
To report a bug, follow the instructions in the guide:
    http://guide.macports.org/#project.tickets
Error: Processing of port rabbitmq-server failed