duplicated block id: 1
size: 6 cleaned lines of code
in 2 files:
 - ext/credentials.c (34:40)
 - ext/credentials.c (121:127)

duplicated block id: 2
size: 6 cleaned lines of code
in 2 files:
 - ext/crc.c (9:16)
 - ext/crc.c (22:29)