I just did a git pull from github and on my MacBook I got target/test-output/1352452803/failed_rename.log src/test/witness/rolling/tbr-failed_renameFiles [target/test-output/1352452803/failed_rename.log] and [src/test/witness/rolling/tbr-failed_rename] differ on line 1 One reads: [Hello---2]. Other reads:[Hello---0]. -------------------------------- Contents of target/test-output/1352452803/failed_rename.log: 1 : Hello---2 -------------------------------- Contents of src/test/witness/rolling/tbr-failed_rename: 1 : Hello---0 2 : Hello---1 3 : Hello---2 20:05:02,312 |-INFO in c.q.l.core.rolling.TimeBasedRollingPolicy - No compression will be used 20:05:02,312 |-INFO in c.q.l.core.rolling.TimeBasedRollingPolicy - Will use the pattern target/test-output/1352452803/failed_rename-%d{yyyy-MM-dd_HH_mm_ss} for the active file 20:05:02,312 |-INFO in c.q.l.core.rolling.DefaultTimeBasedFileNamingAndTriggeringPolicy - The date pattern is 'yyyy-MM-dd_HH_mm_ss' from file name pattern 'target/test-output/1352452803/failed_rename-%d{yyyy-MM-dd_HH_mm_ss}'. 20:05:02,312 |-INFO in c.q.l.core.rolling.DefaultTimeBasedFileNamingAndTriggeringPolicy - Roll-over every second. 20:05:02,312 |-INFO in c.q.l.core.rolling.DefaultTimeBasedFileNamingAndTriggeringPolicy - Setting initial period to Sat Nov 05 20:05:02 PDT 2011 20:05:02,312 |-INFO in ch.qos.logback.core.rolling.RollingFileAppender[null] - Active log file name: target/test-output/1352452803/failed_rename.log 20:05:02,312 |-INFO in ch.qos.logback.core.rolling.RollingFileAppender[null] - File property is set to [target/test-output/1352452803/failed_rename.log] 20:05:02,312 |-INFO in c.q.l.core.rolling.DefaultTimeBasedFileNamingAndTriggeringPolicy - Elapsed period: Sat Nov 05 20:05:02 PDT 2011 20:05:02,312 |-INFO in c.q.l.co.rolling.helper.RenameUtil - Renaming file [target/test-output/1352452803/failed_rename.log] to [target/test-output/1352452803/failed_rename-2011-11-05_20_05_02] 20:05:02,313 |-INFO in c.q.l.core.rolling.DefaultTimeBasedFileNamingAndTriggeringPolicy - Elapsed period: Sat Nov 05 20:05:03 PDT 2011 20:05:02,313 |-INFO in c.q.l.co.rolling.helper.RenameUtil - Renaming file [target/test-output/1352452803/failed_rename.log] to [target/test-output/1352452803/failed_rename-2011-11-05_20_05_03] Tests run: 9, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: -1,993,739.736 sec <<< FAILURE! Results : Failed tests: montlyRollover(ch.qos.logback.core.rolling.TimeBasedRollingWithArchiveRemoval_STest): expected:<3> but was:<4> failed_rename(ch.qos.logback.core.rolling.TimeBasedRolling_STest) Tests run: 317, Failures: 2, Errors: 0, Skipped: 3