Version-Release number of selected component:
dnf-1.1.9-2.fc24

Additional info:
reporter:       libreport-2.7.1
cmdline:        /usr/bin/python3 /usr/bin/dnf update
executable:     /usr/bin/dnf
kernel:         4.6.3-300.fc24.i686
pkg_fingerprint: 73BD E983 81B4 6521
pkg_vendor:     Fedora Project
reproducible:   Not sure how to reproduce the problem
runlevel:       N 5
type:           Python3
uid:            0

Truncated backtrace:
__init__.py:1339:log:SystemError: <built-in function isinstance> returned a result with an error set

OSError: [Errno 5] Input/output error

During handling of the above exception, another exception occurred:

SystemError: <built-in function time> returned a result with an error set

During handling of the above exception, another exception occurred:

SystemError: <built-in function time> returned a result with an error set

During handling of the above exception, another exception occurred:

SystemError: <built-in function isinstance> returned a result with an error set

During handling of the above exception, another exception occurred:

SystemError: <built-in function isinstance> returned a result with an error set

During handling of the above exception, another exception occurred:

SystemError: <built-in function isinstance> returned a result with an error set

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/bin/dnf", line 58, in <module>
    main.user_main(sys.argv[1:], exit_code=True)
  File "/usr/lib/python3.5/site-packages/dnf/cli/main.py", line 174, in user_main
    errcode = main(args)
  File "/usr/lib/python3.5/site-packages/dnf/cli/main.py", line 60, in main
    return _main(base, args)
  File "/usr/lib/python3.5/site-packages/dnf/cli/main.py", line 120, in _main
    ret = resolving(cli, base)
  File "/usr/lib/python3.5/site-packages/dnf/cli/main.py", line 149, in resolving
    base.do_transaction(display=displays)
  File "/usr/lib/python3.5/site-packages/dnf/cli/cli.py", line 212, in do_transaction
    total_cb)
  File "/usr/lib/python3.5/site-packages/dnf/base.py", line 878, in download_packages
    errors = dnf.repo.download_payloads(payloads, drpm)
  File "/usr/lib/python3.5/site-packages/dnf/repo.py", line 146, in download_payloads
    librepo.download_packages(targets, failfast=True)
  File "/usr/lib/python3.5/site-packages/librepo/__init__.py", line 1586, in download_packages
    return _librepo.download_packages(list, failfast)
  File "/usr/lib/python3.5/site-packages/dnf/util.py", line 171, in new_func
    log_call('Call: %s: %s, %s', name, args[1:], kwargs)
  File "/usr/lib/python3.5/logging/__init__.py", line 1339, in log
    if not isinstance(level, int):
SystemError: <built-in function isinstance> returned a result with an error set

Local variables in innermost frame:
level: 6
self: <logging.Logger object at 0xb677038c>
args: ('RPMPayload._end_cb', (<dnf.repo.RPMPayload object at 0xb54fb34c>, 2, 'Not finished - interrupted by error: Downloading was aborted by LR_CB_ERROR from mirror failure callback. Original error was: Curl error (42): Operation was aborted by an application callback for http://fedora.gtdinternet.com/updates/24/i386/b/binutils-2.26.1-1.fc24.i686.rpm [Callback aborted]'), {})
kwargs: {}
msg: 'Call: %s: %s, %s'