Ansible 2.1.1.0.1 build error

[DanHam (Dan)]

When installing Ansible I get the following error:

--->  Fetching archive for ansible
--->  Attempting to fetch ansible-2.1.1.0.1_0.darwin_15.noarch.tbz2 from http://mse.uk.packages.macports.org/sites/packages.macports.org/ansible
--->  Attempting to fetch ansible-2.1.1.0.1_0.darwin_15.noarch.tbz2 from http://lil.fr.packages.macports.org/ansible
--->  Attempting to fetch ansible-2.1.1.0.1_0.darwin_15.noarch.tbz2 from https://packages.macports.org/ansible
--->  Fetching distfiles for ansible
--->  Verifying checksums for ansible
--->  Extracting ansible
--->  Configuring ansible
--->  Building ansible
Error: org.macports.build for port ansible returned: command execution failed
Please see the log file for port ansible for details:
    /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_sysutils_ansible/ansible/main.log
To report a bug, follow the instructions in the guide:
    http://guide.macports.org/#project.tickets
Error: Processing of port ansible failed

Taking a look at the last part of the log:

...
:info:build changing mode of build/scripts-2.7/ansible-galaxy from 644 to 755
:info:build changing mode of build/scripts-2.7/ansible-console from 644 to 755
:info:build changing mode of build/scripts-2.7/ansible-vault from 644 to 755
:debug:build Executing proc-post-org.macports.build-build-0
:info:build sed "s/%VERSION%/2.1.1.0/" docs/man/man1/ansible.1.asciidoc.in > docs/man/man1/ansible.1.asciidoc
:info:build a2x -D docs/man/man1/ -d manpage -f manpage docs/man/man1/ansible.1.asciidoc
:info:build a2x: WARNING: --destination-dir option is only applicable to HTML based outputs
:info:build a2x: ERROR: "xsltproc"  --stringparam callout.graphics 0 --stringparam navig.graphics 0 --stringparam admon.textlabel 1 --stringparam admon.graphics 0  "/opt/local/etc/asciidoc/docbook-xsl/manpage.xsl" "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_sysutils_ansible/ansible/work/ansible-2.1.1.0-1/docs/man/man1/ansible.1.xml" returned non-zero exit status 5
:info:build make: *** [docs/man/man1/ansible.1] Error 1
:info:build rm docs/man/man1/ansible.1.asciidoc
:info:build Command failed: make docs
:info:build Exit code: 2
:error:build org.macports.build for port ansible returned: command execution failed
:debug:build Error code: NONE
:debug:build Backtrace: command execution failed
    while executing
"proc-post-org.macports.build-build-0 org.macports.build"
    ("eval" body line 1)
    invoked from within
"eval $post $targetname"
:info:build Warning: targets not executed for ansible: org.macports.activate org.macports.build org.macports.destroot org.macports.install
:notice:build Please see the log file for port ansible for details:
    /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_sysutils_ansible/ansible/main.log

This appears to be the same issue as reported for Ansible 2.1.0.0.1: ​https://trac.macports.org/ticket/51839 although this is for a completely fresh installation of Ansible rather than an upgrade.