✗ Fi.CI.BUILD: failure for TTM unlockable restartable LRU list iteration (rev3)

[Patchwork]

== Series Details ==

Series: TTM unlockable restartable LRU list iteration (rev3)
URL   : https://patchwork.freedesktop.org/series/130001/
State : failure

== Summary ==

Error: make failed
  CALL    scripts/checksyscalls.sh
  DESCEND objtool
  INSTALL libsubcmd_headers
  CC [M]  drivers/gpu/drm/i915/i915_driver.o
In file included from ./include/drm/ttm/ttm_bo.h:39,
                 from ./drivers/gpu/drm/i915/gem/i915_gem_object_types.h:13,
                 from ./drivers/gpu/drm/i915/gem/i915_gem_object.h:15,
                 from ./drivers/gpu/drm/i915/i915_vma.h:34,
                 from drivers/gpu/drm/i915/display/intel_display_types.h:50,
                 from drivers/gpu/drm/i915/i915_driver.c:52:
./include/drm/ttm/ttm_device.h: In function ‘ttm_set_driver_manager’:
./include/drm/ttm/ttm_device.h:286:31: error: variable ‘old’ set but not used [-Werror=unused-but-set-variable]
  286 |  struct ttm_resource_manager *old;
      |                               ^~~
cc1: all warnings being treated as errors
make[6]: *** [scripts/Makefile.build:243: drivers/gpu/drm/i915/i915_driver.o] Error 1
make[5]: *** [scripts/Makefile.build:481: drivers/gpu/drm/i915] Error 2
make[4]: *** [scripts/Makefile.build:481: drivers/gpu/drm] Error 2
make[3]: *** [scripts/Makefile.build:481: drivers/gpu] Error 2
make[2]: *** [scripts/Makefile.build:481: drivers] Error 2
make[1]: *** [/home/kbuild2/kernel/Makefile:1921: .] Error 2
make: *** [Makefile:240: __sub-make] Error 2
Build failed, no error log produced