Django migrate command fails with change in foreign key related name - django

Question

I have a model with a foreign key field. I want to give the foreign key a related name. However, migration fails because of the following error:
IndexError: list index out of range
I'm using Django==1.10.5
Database backend is PostgreSQL
models.py Before/After migrations
Before:
class Contest_participants(models.Model):
contest = models.ForeignKey(Contest)
After:
class Contest_participants(models.Model):
contest = models.ForeignKey(Contest, related_name='contests')
The makemigrations command works fine, but the migrate command fails with the above noted error.
Complete Traceback Error:
Running migrations:
Applying teams.0013_auto_20171031_1225...Traceback (most recent call last):
File "manage.py", line 19, in <module>
execute_from_command_line(sys.argv)
File "/home/aps/Documents/neuron/venv/lib/python3.5/site-packages/django/core/management/__init__.py", line 367, in execute_from_command_line
utility.execute()
File "/home/aps/Documents/neuron/venv/lib/python3.5/site-packages/django/core/management/__init__.py", line 359, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/home/aps/Documents/neuron/venv/lib/python3.5/site-packages/django/core/management/base.py", line 294, in run_from_argv
self.execute(*args, **cmd_options)
File "/home/aps/Documents/neuron/venv/lib/python3.5/site-packages/django/core/management/base.py", line 345, in execute
output = self.handle(*args, **options)
File "/home/aps/Documents/neuron/venv/lib/python3.5/site-packages/django/core/management/commands/migrate.py", line 204, in handle
fake_initial=fake_initial,
File "/home/aps/Documents/neuron/venv/lib/python3.5/site-packages/django/db/migrations/executor.py", line 115, in migrate
state = self._migrate_all_forwards(state, plan, full_plan, fake=fake, fake_initial=fake_initial)
File "/home/aps/Documents/neuron/venv/lib/python3.5/site-packages/django/db/migrations/executor.py", line 145, in _migrate_all_forwards
state = self.apply_migration(state, migration, fake=fake, fake_initial=fake_initial)
File "/home/aps/Documents/neuron/venv/lib/python3.5/site-packages/django/db/migrations/executor.py", line 244, in apply_migration
state = migration.apply(state, schema_editor)
File "/home/aps/Documents/neuron/venv/lib/python3.5/site-packages/django/db/migrations/migration.py", line 129, in apply
operation.database_forwards(self.app_label, schema_editor, old_state, project_state)
File "/home/aps/Documents/neuron/venv/lib/python3.5/site-packages/django/db/migrations/operations/fields.py", line 204, in database_forwards
schema_editor.alter_field(from_model, from_field, to_field)
File "/home/aps/Documents/neuron/venv/lib/python3.5/site-packages/django/db/backends/base/schema.py", line 495, in alter_field
old_db_params, new_db_params, strict)
File "/home/aps/Documents/neuron/venv/lib/python3.5/site-packages/django/db/backends/postgresql/schema.py", line 117, in _alter_field
new_db_params, strict,
File "/home/aps/Documents/neuron/venv/lib/python3.5/site-packages/django/db/backends/base/schema.py", line 504, in _alter_field
fk_names = self._constraint_names(model, [old_field.column], foreign_key=True)
File "/home/aps/Documents/neuron/venv/lib/python3.5/site-packages/django/db/backends/base/schema.py", line 931, in _constraint_names
constraints = self.connection.introspection.get_constraints(cursor, model._meta.db_table)
File "/home/aps/Documents/neuron/venv/lib/python3.5/site-packages/django/db/backends/postgresql/introspection.py", line 178, in get_constraints
"foreign_key": tuple(used_cols[0].split(".", 1)) if kind.lower() == "foreign key" else None,
IndexError: list index out of range
EDIT: Migrations
class Migration(migrations.Migration):
dependencies = [
('teams', '0012_auto_20170904_1524'),
]
operations = [
migrations.AlterField(
model_name='contest_participants',
name='contest',
field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='contests', to='contest.Contest'),
),
]