ccache fails on %check due to a bus error, but failure is ignored.
See:
https://build.opensuse.org/package/live_build_log/openSUSE:Factory:ARM/ccache/standard/armv6l


It also fails when used to build other packages, such as glib2:

[  124s] FAILED: glib/libglib-2.0.so.0.7000.1.p/deprecated_gallocator.c.o 
[  124s] ccache cc -Iglib/libglib-2.0.so.0.7000.1.p -Iglib -I../glib -I. -I..
-fdiagnostics-color=always -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch
-std=gnu99 -D_GNU_SOURCE -fno-strict-aliasing -DG_ENABLE_DEBUG
-Wduplicated-branches -Wimplicit-fallthrough -Wmisleading-indentation
-Wstrict-prototypes -Wunused -Wno-unused-parameter -Wno-bad-function-cast
-Wno-cast-function-type -Wno-pedantic -Wno-format-zero-length
-Werror=declaration-after-statement -Werror=format=2
-Werror=implicit-function-declaration -Werror=init-self
-Werror=missing-include-dirs -Werror=missing-prototypes -Werror=pointer-arith
-O2 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector-strong -funwind-tables
-fasynchronous-unwind-tables -fstack-clash-protection -Werror=return-type -g
-fPIC -pthread '-DG_LOG_DOMAIN="GLib"' -DGLIB_COMPILATION -fvisibility=hidden
-MD -MQ glib/libglib-2.0.so.0.7000.1.p/deprecated_gallocator.c.o -MF
glib/libglib-2.0.so.0.7000.1.p/deprecated_gallocator.c.o.d -o
glib/libglib-2.0.so.0.7000.1.p/deprecated_gallocator.c.o -c
../glib/deprecated/gallocator.c
[  124s] /var/lib/build/ccache/bin/cc: line 4:  2735 Bus error              
ccache cc "$@"
[  124s] ninja: build stopped: subcommand failed.