Bug#871123: ros-bond-core: FTBFS: ImportError: No module named yaml

[Lucas Nussbaum]

Source: ros-bond-core
Version: 1.7.18-2
Severity: serious
Tags: buster sid
User: debian-qa at lists.debian.org
Usertags: qa-ftbfs-20170805 qa-ftbfs
Justification: FTBFS on amd64

Hi,

During a rebuild of all packages in sid, your package failed to build on
amd64.

Relevant part (hopefully):
> make[3]: Entering directory '/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu'
> [  9%] Generating Lisp code from bond/Status.msg
> [ 18%] Generating C++ code from bond/Status.msg
> [ 27%] Generating Python from MSG bond/Constants
> cd /<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/bond && ../catkin_generated/env_cached.sh /usr/bin/python /usr/lib/genlisp/gen_lisp.py /<<PKGBUILDDIR>>/bond/msg/Status.msg -Ibond:/<<PKGBUILDDIR>>/bond/msg -Istd_msgs:/usr/share/std_msgs/cmake/../msg -p bond -o /<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/devel/share/common-lisp/ros/bond/msg
> [ 36%] Generating Lisp code from bond/Constants.msg
> [ 45%] Generating Python from MSG bond/Status
> cd /<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/bond && ../catkin_generated/env_cached.sh /usr/bin/python /usr/lib/gencpp/gen_cpp.py /<<PKGBUILDDIR>>/bond/msg/Status.msg -Ibond:/<<PKGBUILDDIR>>/bond/msg -Istd_msgs:/usr/share/std_msgs/cmake/../msg -p bond -o /<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/devel/include/bond -e /usr/share/gencpp/cmake/..
> [ 54%] Generating C++ code from bond/Constants.msg
> cd /<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/bond && ../catkin_generated/env_cached.sh /usr/bin/python /usr/lib/genpy/genmsg_py.py /<<PKGBUILDDIR>>/bond/msg/Constants.msg -Ibond:/<<PKGBUILDDIR>>/bond/msg -Istd_msgs:/usr/share/std_msgs/cmake/../msg -p bond -o /<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/devel/lib/python2.7/dist-packages/bond/msg
> cd /<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/bond && ../catkin_generated/env_cached.sh /usr/bin/python /usr/lib/genlisp/gen_lisp.py /<<PKGBUILDDIR>>/bond/msg/Constants.msg -Ibond:/<<PKGBUILDDIR>>/bond/msg -Istd_msgs:/usr/share/std_msgs/cmake/../msg -p bond -o /<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/devel/share/common-lisp/ros/bond/msg
> cd /<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/bond && ../catkin_generated/env_cached.sh /usr/bin/python /usr/lib/genpy/genmsg_py.py /<<PKGBUILDDIR>>/bond/msg/Status.msg -Ibond:/<<PKGBUILDDIR>>/bond/msg -Istd_msgs:/usr/share/std_msgs/cmake/../msg -p bond -o /<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/devel/lib/python2.7/dist-packages/bond/msg
> cd /<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/bond && ../catkin_generated/env_cached.sh /usr/bin/python /usr/lib/gencpp/gen_cpp.py /<<PKGBUILDDIR>>/bond/msg/Constants.msg -Ibond:/<<PKGBUILDDIR>>/bond/msg -Istd_msgs:/usr/share/std_msgs/cmake/../msg -p bond -o /<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/devel/include/bond -e /usr/share/gencpp/cmake/..
> Traceback (most recent call last):
>   File "/usr/lib/genpy/genmsg_py.py", line 44, in <module>
>     import genpy.generator
>   File "/usr/lib/python2.7/dist-packages/genpy/__init__.py", line 34, in <module>
>     from . message import Message, SerializationError, DeserializationError, MessageException, struct_I
>   File "/usr/lib/python2.7/dist-packages/genpy/message.py", line 44, in <module>
>     import yaml
> ImportError: No module named yaml
> Traceback (most recent call last):
>   File "/usr/lib/genpy/genmsg_py.py", line 44, in <module>
>     import genpy.generator
>   File "/usr/lib/python2.7/dist-packages/genpy/__init__.py", line 34, in <module>
>     from . message import Message, SerializationError, DeserializationError, MessageException, struct_I
>   File "/usr/lib/python2.7/dist-packages/genpy/message.py", line 44, in <module>
>     import yaml
> ImportError: No module named yaml
> bond/CMakeFiles/bond_generate_messages_py.dir/build.make:66: recipe for target 'devel/lib/python2.7/dist-packages/bond/msg/_Constants.py' failed
> make[3]: *** [devel/lib/python2.7/dist-packages/bond/msg/_Constants.py] Error 1

The full build log is available from:
   http://aws-logs.debian.net/2017/08/05/ros-bond-core_1.7.18-2_unstable.log

A list of current common problems and possible solutions is available at
http://wiki.debian.org/qa.debian.org/FTBFS . You're welcome to contribute!

About the archive rebuild: The rebuild was done on EC2 VM instances from
Amazon Web Services, using a clean, minimal and up-to-date chroot. Every
failed build was retried once to eliminate random failures.