What does the "WARN: Crawling Stopped" warning mean?

Question

Why do my logs fill up with warnings about Crawling Stopped?

Is this indicating some sort of problem that I need to address?

5088 00:00:01 WARN  [Index=sitecore_core_index] Crawling Stopped
5088 00:00:01 WARN  [Index=sitecore_master_index] Crawling Stopped
5088 00:00:01 WARN  [Index=sitecore_web_index] Crawling Stopped
5088 00:00:01 WARN  [Index=sitecore_solr_analytics_index] Crawling Stopped
5088 00:00:01 WARN  [Index=sitecore_core_index_solr] Crawling Stopped
5088 00:00:01 WARN  [Index=sitecore_master_index_solr] Crawling Stopped
5088 00:00:01 WARN  [Index=sitecore_web_index_solr] Crawling Stopped
5088 00:00:01 WARN  [Index=sitecore_marketing_asset_index_master] Crawling Stopped
5088 00:00:01 WARN  [Index=sitecore_marketing_asset_index_web] Crawling Stopped
5088 00:00:01 WARN  [Index=sitecore_marketingdefinitions_master] Crawling Stopped
5088 00:00:01 WARN  [Index=sitecore_marketingdefinitions_web] Crawling Stopped
5088 00:00:01 WARN  [Index=ac_products_master_index] Crawling Stopped
5088 00:00:01 WARN  [Index=ac_products_web_index] Crawling Stopped
5088 00:00:01 WARN  [Index=sitecore_testing_index] Crawling Stopped
5088 00:00:01 WARN  [Index=sitecore_suggested_test_index] Crawling Stopped
5088 00:00:01 WARN  [Index=sitecore_fxm_master_index] Crawling Stopped
5088 00:00:01 WARN  [Index=sitecore_fxm_web_index] Crawling Stopped
5088 00:00:01 WARN  [Index=sitecore_fxm_domains_master] Crawling Stopped
5088 00:00:01 WARN  [Index=sitecore_fxm_domains_web] Crawling Stopped
5088 00:00:01 WARN  [Index=sitecore_list_index] Crawling Stopped
5088 00:00:01 WARN  [Index=social_messages_master] Crawling Stopped
5088 00:00:01 WARN  [Index=social_messages_web] Crawling Stopped
5088 00:00:01 WARN  [Index=sitecore_core_index] Crawling Stopped
5088 00:00:01 WARN  [Index=sitecore_master_index] Crawling Stopped
5088 00:00:01 WARN  [Index=sitecore_web_index] Crawling Stopped
5088 00:00:01 WARN  [Index=sitecore_solr_analytics_index] Crawling Stopped

Answer 1

Your Indexing has stopped & log entries are triggered from 'StopIndexing' method as shown.

Some Info:

Check your Sitecore context log file has entries like 'WARN Sitecore shutting down'.This might interrupt the indexing process. For More info please follow this link