>>> qemu 3.1.1 Extracting
xzcat /home/buildroot/autobuild/instance-3/buildroot/instance-3/dl/qemu/qemu-3.1.1.tar.xz | tar --strip-components=1 -C /home/buildroot/autobuild/instance-3/output-1/build/qemu-3.1.1   -xf -
>>> qemu 3.1.1 Patching

Applying 0001-user-exec-fix-usage-of-mcontext-structure-on-ARM-uCl.patch using patch: 
patching file accel/tcg/user-exec.c
Hunk #1 succeeded at 464 (offset 1 line).

Applying 0002-configure-improve-usbfs-check.patch using patch: 
patching file configure
Reversed (or previously applied) patch detected!  Skipping patch.
1 out of 1 hunk ignored -- saving rejects to file configure.rej
package/pkg-generic.mk:202: recipe for target '/home/buildroot/autobuild/instance-3/output-1/build/qemu-3.1.1/.stamp_patched' failed
make: *** [/home/buildroot/autobuild/instance-3/output-1/build/qemu-3.1.1/.stamp_patched] Error 1
make: Leaving directory '/home/buildroot/autobuild/instance-3/buildroot'