Bug#963324: apertium-apy: FTBFS: AttributeError: module 'tornado.web' has no attribute 'asynchronous'

[Lucas Nussbaum]

Source: apertium-apy
Version: 0.11.5-1
Severity: serious
Justification: FTBFS on amd64
Tags: bullseye sid ftbfs
Usertags: ftbfs-20200620 ftbfs-bullseye

Hi,

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

Relevant part (hopefully):
>  fakeroot debian/rules clean
> dh clean --with python3 --buildsystem=pybuild
>    dh_auto_clean -O--buildsystem=pybuild
> I: pybuild base:217: python3.8 setup.py clean 
> Traceback (most recent call last):
>   File "setup.py", line 6, in <module>
>     from apertium_apy import apy
>   File "/<<PKGBUILDDIR>>/apertium_apy/apy.py", line 38, in <module>
>     from apertium_apy.handlers import (
>   File "/<<PKGBUILDDIR>>/apertium_apy/handlers/__init__.py", line 1, in <module>
>     from apertium_apy.handlers.analyze import AnalyzeHandler  # noqa: F401
>   File "/<<PKGBUILDDIR>>/apertium_apy/handlers/analyze.py", line 5, in <module>
>     from apertium_apy.handlers.base import BaseHandler
>   File "/<<PKGBUILDDIR>>/apertium_apy/handlers/base.py", line 16, in <module>
>     class BaseHandler(tornado.web.RequestHandler):
>   File "/<<PKGBUILDDIR>>/apertium_apy/handlers/base.py", line 177, in BaseHandler
>     @tornado.web.asynchronous
> AttributeError: module 'tornado.web' has no attribute 'asynchronous'
> E: pybuild pybuild:352: clean: plugin distutils failed with: exit code=1: python3.8 setup.py clean 
> dh_auto_clean: error: pybuild --clean -i python{version} -p 3.8 returned exit code 13
> make: *** [debian/rules:8: clean] Error 25

The full build log is available from:
   http://qa-logs.debian.net/2020/06/20/apertium-apy_0.11.5-1_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.