Bug report

Bug description:

I unfortunately don't have a minimal reproducible example, as it happens in a complex system under high concurrent load, but I get the following error after calling: await asyncio.open_connection(host, port)

File "/usr/local/lib/python3.13/asyncio/base_events.py", line 1169, in create_connection
  model = str(exceptions[0])
                 ~~~~~~~^^^
IndexError: list index out of range

Whatever the issue is, this is not proper error handling on python's part.

CPython versions tested on:

3.13

Operating systems tested on:

Linux

Linked PRs

• gh-135836: Fix IndexError in asyncio.create_connection with empty exceptions list #135845
• gh-135836: take into account staggered exceptions #135874
• gh-135836: Fix IndexError in asyncio.create_connection() #135875
• [3.14] gh-135836: Fix IndexError in asyncio.create_connection with empty exceptions list (GH-135845) #136167
• [3.13] gh-135836: Fix IndexError in asyncio.create_connection with empty exceptions list (GH-135845) #136168
• [3.14] gh-135836: Fix IndexError in asyncio.create_connection() (GH-135875) #136221
• [3.13] gh-135836: Fix IndexError in asyncio.create_connection() (GH-135875) #136222