Code review comment for lp://staging/~canonical-platform-qa/autopilot/pdf-build

The packaging in debian/rules looks fine to me. However, it fails to build:

   debian/rules override_dh_auto_build
make[1]: Entering directory '/«BUILDDIR»/autopilot-1.5.0+14.10.20140806'
convert /«BUILDDIR»/autopilot-1.5.0+14.10.20140806/docs/images/test_pyramid.svg /«BUILDDIR»/autopilot-1.5.0+14.10.20140806/docs/images/test_pyramid.pdf
convert: delegate failed `"rsvg-convert" -o "%o" "%i"' @ error/delegate.c/InvokeDelegate/1310.
convert: unable to open image `/tmp/magick-28976RCFje6T2VDtX': No such file or directory @ error/blob.c/OpenBlob/2709.
convert: unable to open file `/tmp/magick-28976RCFje6T2VDtX': No such file or directory @ error/constitute.c/ReadImage/540.
convert: no images defined `/«BUILDDIR»/autopilot-1.5.0+14.10.20140806/docs/images/test_pyramid.pdf' @ error/convert.c/ConvertImageCommand/3210.
make[1]: *** [/«BUILDDIR»/autopilot-1.5.0+14.10.20140806/docs/images/test_pyramid.pdf] Error 1
debian/rules:8: recipe for target '/«BUILDDIR»/autopilot-1.5.0+14.10.20140806/docs/images/test_pyramid.pdf' failed
make[1]: Leaving directory '/«BUILDDIR»/autopilot-1.5.0+14.10.20140806'
make: *** [build] Error 2
debian/rules:14: recipe for target 'build' failed

Maybe that's still missing some build dep?

I can't quite see what changed in docs/man.rst, that seems to be some whitespace noise?