Run of fresh-snapshots for cyrus-sasl2

Try this locally (using silver-platter):

debian-svp new-upstream --snapshot cyrus-sasl2 
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make[1]: Entering directory '/build/tmpew9v7fmc/cyrus-sasl2'
/usr/bin/make  distdir-am
make[2]: Entering directory '/build/tmpew9v7fmc/cyrus-sasl2'
test x"." = x"." || \
        (cd . && tar cf - --mode=gu+w docsrc) | tar xf -
/usr/bin/sphinx-build -d docsrc/.doctrees -n -q -b cyrman ./docsrc ./man

Extension error:
Could not import extension sphinxlocal.builders.manpage (exception: cannot import name 'NoUri' from 'sphinx.environment' (/usr/lib/python3/dist-packages/sphinx/environment/__init__.py))
make[2]: *** [Makefile:1156: man/.sphinx-build.stamp] Error 2
make[2]: Leaving directory '/build/tmpew9v7fmc/cyrus-sasl2'
make[1]: *** [Makefile:780: distdir] Error 2
make[1]: Leaving directory '/build/tmpew9v7fmc/cyrus-sasl2'
make: *** [Makefile:888: dist] Error 2
[2021-04-20 05:26:48] Build failed with unidentified error:
[2021-04-20 05:26:48] Could not import extension sphinxlocal.builders.manpage (exception: cannot import name 'NoUri' from 'sphinx.environment' (/usr/lib/python3/dist-packages/sphinx/environment/__init__.py))

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