You could do a pull request for the interval library on the 'develop' branch. If the maintainer of 'interval' does not respond to that, then Boost could look for a co-maintainer who would do so. Also I suggest that you add an interval test as part of your pull request that shows the bug and that also shows that your fix is working.
https://svn.boost.org/trac/boost/wiki/StartModPatchAndPullReq
I succeeded in cloning the interval library and applying my patch
locally. But I was not successful in running the regression tests; bjam
says:
link.jam: No such file or directory
..\..\..\..\Jamroot:154: in modules.load
ERROR: rule "link-directory" unknown in module
"Jamfile