This broke the Ubuntu 22.04 AppVeyor build:
extlib/microtar/src/microtar.c: In function ‘mtar_read_header’:
extlib/microtar/src/microtar.c:111:3: error: ‘__builtin_strncpy’ output may be truncated copying 99 bytes from a string of length 99 [-Werror=stringop-truncation]
111 | strncpy(h->name, rh->name, sizeof(h->name));
| ^
extlib/microtar/src/microtar.c:112:3: error: ‘__builtin_strncpy’ output may be truncated copying 99 bytes from a string of length 99 [-Werror=stringop-truncation]
112 | strncpy(h->linkname, rh->linkname, sizeof(h->linkname));
| ^
cc1: all warnings being treated as errors