11 files declare their use of RequirementsException in Zircon Profile 8

CckMigration.php in core/modules/migrate_drupal/src/Plugin/migrate/builder/d6/CckMigration.php

Contains \Drupal\migrate_drupal\Plugin\migrate\builder\d6\CckMigration.

DestinationBase.php in core/modules/migrate/src/Plugin/migrate/destination/DestinationBase.php

Contains \Drupal\migrate\Plugin\migrate\destination\DestinationBase.

DrupalSqlBase.php in core/modules/migrate_drupal/src/Plugin/migrate/source/DrupalSqlBase.php

Contains \Drupal\migrate_drupal\Plugin\migrate\source\DrupalSqlBase.

MigrateExecutable.php in core/modules/migrate/src/MigrateExecutable.php

Contains \Drupal\migrate\MigrateExecutable.

MigrateImageCacheTest.php in core/modules/image/src/Tests/Migrate/d6/MigrateImageCacheTest.php

Contains \Drupal\image\Tests\Migrate\d6\MigrateImageCacheTest.

Migration.php in core/modules/migrate/src/Entity/Migration.php

Contains \Drupal\migrate\Entity\Migration.

MigrationTest.php in core/modules/migrate/tests/src/Unit/MigrationTest.php

Contains \Drupal\Tests\migrate\Unit\MigrationTest.

Node.php in core/modules/node/src/Plugin/migrate/builder/d6/Node.php

Contains \Drupal\node\Plugin\migrate\builder\d6\Node.

ProfileValues.php in core/modules/user/src/Plugin/migrate/builder/d6/ProfileValues.php

Contains \Drupal\user\Plugin\migrate\builder\d6\ProfileValues.

RequirementsExceptionTest.php in core/modules/migrate/tests/src/Unit/Exception/RequirementsExceptionTest.php

Contains \Drupal\Tests\migrate\Unit\Exception\RequirementsExceptionTest.

User.php in core/modules/user/src/Plugin/migrate/builder/d7/User.php

Contains \Drupal\user\Plugin\migrate\builder\d7\User.