buildworld: lib/libc: install: short write to libc.so.7.debug: [_libinstall] Error code 71

[Graham Perrin]

Attempting to build r367615 on Friday 13th:

…

===> lib/libprocstat/zfs (install)
install -U  -C -o root -g wheel -m 444 
/usr/src/lib/libprocstat/libprocstat.h 
/usr/obj/usr/src/amd64.amd64/tmp/usr/include/
===> lib/libc (obj,all,install)
install -U  -C -o root -g wheel -m 444   libc.a 
/usr/obj/usr/src/amd64.amd64/tmp/usr/lib/
install -U  -s -o root -g wheel -m 444   -S  libc.so.7 
/usr/obj/usr/src/amd64.amd64/tmp/lib/
install -U  -o root -g wheel -m 444    libc.so.7.debug 
/usr/obj/usr/src/amd64.amd64/tmp/usr/lib/debug/lib/
install: short write to 
/usr/obj/usr/src/amd64.amd64/tmp/usr/lib/debug/lib/libc.so.7.debug: 
393216 bytes written, 7462472 bytes asked to write
*** [_libinstall] Error code 71

make[4]: stopped in /usr/src/lib/libc
1 error

make[4]: stopped in /usr/src/lib/libc
root at mowa219-gjp4-8570p:/usr/src #