| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/golang-migrate/migrate/v4/internal/url | |
| go.uber.org/atomic | Package atomic provides simple wrappers around numerics to enforce atomic access. |
| hash/crc32 | Package crc32 implements the 32-bit cyclic redundancy check, or CRC-32, checksum. |
| io | Package io provides basic interfaces to I/O primitives. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |
| sync | Package sync provides basic synchronization primitives such as mutual exclusion locks. |