I am uploading a NMU to fix this.
diff -Nru python-iowait-0.1/debian/changelog python-iowait-0.1/debian/changelog
--- python-iowait-0.1/debian/changelog 2019-12-22 21:15:00.000000000 +0100
+++ python-iowait-0.1/debian/changelog 2023-08-28 20:40:57.000000000 +0200
@@ -1,3 +1,11 @@
+python-iowait (0.1-1.3) unstable; urgency=medium
+
+ * Non-maintainer upload.
+ * Drop non-existing Vcs repo; Closes: #1031989
+ * Drop obsolete XB-Python3-Version.
+
+ -- Bastian Germann <b...@debian.org> Mon, 28 Aug 2023 20:40:57 +0200
+
python-iowait (0.1-1.2) unstable; urgency=medium
* Non-maintainer upload.
diff -Nru python-iowait-0.1/debian/control python-iowait-0.1/debian/control
--- python-iowait-0.1/debian/control 2019-12-22 21:15:00.000000000 +0100
+++ python-iowait-0.1/debian/control 2023-08-28 20:40:57.000000000 +0200
@@ -6,14 +6,11 @@
Build-Depends-Indep: python3-all (>= 3.1.2-1~)
Standards-Version: 3.9.1
Homepage: https://launchpad.net/python-iowait
-Vcs-Bzr: http://bazaar.launchpad.net/+branch/python-iowait/0.1
-Vcs-Browser: http://bazaar.launchpad.net/+branch/python-iowait/0.1/files
Package: python3-iowait
Architecture: all
Depends: ${misc:Depends}, ${python3:Depends}
Breaks: ${python3:Breaks}
-XB-Python3-Version: ${python3:Versions}
Description: Platform-independent module for I/O completion events
Different operating systems provide different ways to wait for I/O completion
events: there's select(), poll(), epoll() and kqueue(). For cross-platform
