here is a few more
Mar 20 05:25:24 bill-hasts-macpro31 kernel[0]: CODE SIGNING: cs_invalid_page: p=710[Console] clearing CS_VALID
Mar 20 05:25:44 bill-hasts-macpro31 Finder[413]: NSOpenGLAutoscaleBounds=NO
Mar 20 05:30:18 bill-hasts-macpro31 kernel[0]: CODE SIGNING: cs_invalid_page: p=716[mdworker] clearing CS_VALID
Mar 20 05:32:56 bill-hasts-macpro31 kernel[0]: CODE SIGNING: cs_invalid_page: p=722[lssave] clearing CS_VALID
Mar 20 05:33:02 bill-hasts-macpro31 kernel[0]: CODE SIGNING: cs_invalid_page: p=723[Console] clearing CS_VALID
Mar 20 05:34:11 bill-hasts-macpro31 kernel[0]: CODE SIGNING: cs_invalid_page: p=726[lssave] clearing CS_VALID
Mar 20 05:38:56 bill-hasts-macpro31 mDNSResponder[38]: mDNSPlatformRawTime: last_mach_absolute_time A7579E16000003DF
Mar 20 05:38:56 bill-hasts-macpro31 mDNSResponder[38]: mDNSPlatformRawTime: this_mach_absolute_time A7573680000003DF
Mar 20 05:38:58 bill-hasts-macpro31 kernel[0]: CODE SIGNING: cs_invalid_page: p=728[lssave] clearing CS_VALID
Mar 20 05:46:17 bill-hasts-macpro31 kernel[0]: CODE SIGNING: cs_invalid_page: p=733[mdworker] clearing CS_VALID
Mar 20 05:46:18 bill-hasts-macpro31 kernel[0]: CODE SIGNING: cs_invalid_page: p=735[lssave] clearing CS_VALID
Mar 20 06:03:26 bill-hasts-macpro31 mDNSResponder[38]: mDNSPlatformRawTime: last_mach_absolute_time EB3FFD3900000535
Mar 20 06:03:26 bill-hasts-macpro31 mDNSResponder[38]: mDNSPlatformRawTime: this_mach_absolute_time EB3E5EF600000535
Mar 20 06:03:28 bill-hasts-macpro31 kernel[0]: CODE SIGNING: cs_invalid_page: p=742[lssave] clearing CS_VALID
Mar 20 06:03:28 bill-hasts-macpro31 kernel[0]: CODE SIGNING: cs_invalid_page: p=743[mdworker] clearing CS_VALID
Mar 20 06:10:52 bill-hasts-macpro31 kernel[0]: CODE SIGNING: cs_invalid_page: p=746[Console] clearing CS_VALID
Mar 20 06:10:54 bill-hasts-macpro31 kernel[0]: CODE SIGNING: cs_invalid_page: p=748[lssave] clearing CS_VALID

guess these are emergency errors