racket isntall error

racket_install_error.log

Error [GCING] 212 in ../../../racket/gc2/../src/bool.c: Function mz_long_double_eqv declared __xform_nongcing__, but includes a function call.
Error [GCING] 248 in ../../../racket/gc2/../src/bool.c: Function double_eqv declared __xform_nongcing__, but includes a function call.
xform: Errors converting
  context...:
   /tmp/SBo/racket-6.3/src/build/racket/gc2/xform-collects/compiler/private/xform.rkt:8:2: xform
   /tmp/SBo/racket-6.3/src/build/racket/gc2/xform-collects/xform/xform-mod.rkt: [running body]
make[4]: *** [xsrc/bool.c] Error 1
Makefile:208: recipe for target 'xsrc/bool.c' failed
make[4]: Leaving directory '/tmp/SBo/racket-6.3/src/build/racket/gc2'
make[3]: *** [all] Error 2
Makefile:172: recipe for target 'all' failed
make[3]: Leaving directory '/tmp/SBo/racket-6.3/src/build/racket/gc2'
make[2]: *** [3m] Error 2
Makefile:101: recipe for target '3m' failed
make[2]: Leaving directory '/tmp/SBo/racket-6.3/src/build/racket'
Makefile:57: recipe for target '3m' failed
make[1]: *** [3m] Error 2
make[1]: Leaving directory '/tmp/SBo/racket-6.3/src/build'
Makefile:51: recipe for target 'all' failed
make: *** [all] Error 2
Failures:
  racket: racket.SlackBuild return non-zero