EBUSY occurs if xbps tries to remove a directory with unlink(2) that is
a mount point, this happens with `/boot` as example.
https: //github.com/voidlinux/void-packages/issues/7229#issuecomment-319392560
https: //github.com/voidlinux/void-packages/issues/8753
Closes: #259 [via git-merge-pr]
Original message:
```
fetch_cb.c:80:29: error: ‘h’ directive output may be truncated writing 1 byte into a region of size between 0 and 14 [-Werror=format-truncation=]
snprintf(str, sizeof str, "%02ldh%02ldm",
^~~~~~~~~~~~~~
fetch_cb.c:80:29: note: directive argument in the range [0, 59]
fetch_cb.c:80:3: note: ‘snprintf’ output between 7 and 21 bytes into a destination of size 16
snprintf(str, sizeof str, "%02ldh%02ldm",
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
eta / 3600, (eta % 3600) / 60);
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
fetch_cb.c:83:30: error: ‘%02ld’ directive output may be truncated writing between 2 and 19 bytes into a region of size 16 [-Werror=format-truncation=]
snprintf(str, sizeof str, "%02ldm%02lds",
^~~~~
fetch_cb.c:83:29: note: directive argument in the range [-153722867280912930, 60]
snprintf(str, sizeof str, "%02ldm%02lds",
^~~~~~~~~~~~~~
fetch_cb.c:83:29: note: directive argument in the range [-59, 59]
fetch_cb.c:83:3: note: ‘snprintf’ output between 7 and 25 bytes into a destination of size 16
snprintf(str, sizeof str, "%02ldm%02lds",
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
eta / 60, eta % 60);
~~~~~~~~~~~~~~~~~~~
fetch_cb.c:80:29: error: ‘h’ directive output may be truncated writing 1 byte into a region of size between 0 and 14 [-Werror=format-truncation=]
snprintf(str, sizeof str, "%02ldh%02ldm",
^~~~~~~~~~~~~~
fetch_cb.c:80:29: note: directive argument in the range [0, 59]
fetch_cb.c:80:3: note: ‘snprintf’ output between 7 and 21 bytes into a destination of size 16
snprintf(str, sizeof str, "%02ldh%02ldm",
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
eta / 3600, (eta % 3600) / 60);
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
fetch_cb.c:83:30: error: ‘%02ld’ directive output may be truncated writing between 2 and 19 bytes into a region of size 16 [-Werror=format-truncation=]
snprintf(str, sizeof str, "%02ldm%02lds",
^~~~~
fetch_cb.c:83:29: note: directive argument in the range [-153722867280912930, 60]
snprintf(str, sizeof str, "%02ldm%02lds",
^~~~~~~~~~~~~~
fetch_cb.c:83:29: note: directive argument in the range [-59, 59]
fetch_cb.c:83:3: note: ‘snprintf’ output between 7 and 25 bytes into a destination of size 16
snprintf(str, sizeof str, "%02ldm%02lds",
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
eta / 60, eta % 60);
~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
```
