[racket-dev] seeing an error when compiling racket 5.1.1.3 (e9dd758)

I'm seeing the following error message at the end of my 'make install':

########################################################
...
raco setup: running: sgl/scribblings/sgl.scrbl
raco setup: running: string-constants/string-constants.scrbl
raco setup: running: scribblings/slideshow/slideshow.scrbl
raco setup: running: swindle/swindle.scrbl
raco setup: running: syntax-color/syntax-color.scrbl
raco setup: running: test-box-recovery/test-box-recovery.scrbl
raco setup: running: test-engine/test-engine.scrbl
SIGSEGV MAPERR si_code 1 fault on addr (nil)
make[1]: *** [install-3m] Aborted
make[1]: Leaving directory `/home/dyoo/local/plt/src'
make: *** [install] Error 2
########################################################



I then re-ran make-install:

########################################################
...
raco setup: rendering: xml/xml.scrbl
raco setup: rendering: unstable/scribblings/unstable.scrbl
raco setup: rendering: web-server/scribblings/tutorial/continue.scrbl
raco setup: rendering: scribblings/reference/reference.scrbl
raco setup: re-rendering: algol60/algol60.scrbl
raco setup: re-rendering: compiler/cffi.scrbl
raco setup: re-rendering: datalog/scribblings/datalog.scrbl
raco setup: re-rendering: scribblings/drracket/drracket.scrbl
SIGSEGV MAPERR si_code 1 fault on addr (nil)
make[1]: *** [install-3m] Aborted
make[1]: Leaving directory `/home/dyoo/local/plt/src'
make: *** [install] Error 2
########################################################

So it's not dying exactly at the same place as before: it is
terminating at a different point during Scribble code generation.

What else can I do to get some good debugging information on this?