macosx jdk builds failing randomly

[Pete Brunet]

It's been two or three weeks since I last built 9 on macosx but I
started rebuilding yesterday and am getting random failures in the jdk
build:

Twice I got this:

Compiling 225 files for BUILD_SECURITY
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
/usr/bin/printf: illegal option -- s
usage: printf format [arguments ...]
make[2]: ***
[/Users/petebrunet/JDK9/JDK-8034118/jdk9/build/macosx-x86-normal-server-release/jdk/lib/jvm.cfg]
Error 1

And twice got this:

/Users/petebrunet/JDK9/JDK-8034768/jdk9/jdk/src/macosx/native/sun/awt/LWCToolkit.m:92:
warning: ivar name ‘_runnable’ specified on the synthesized property
‘runnable’ not found
/Users/petebrunet/JDK9/JDK-8034768/jdk9/jdk/src/macosx/native/sun/awt/LWCToolkit.m:92:
error: synthesized property ‘runnable’ must either be named the same as
a compatible ivar or must explicitly name an ivar
/Users/petebrunet/JDK9/JDK-8034768/jdk9/jdk/src/macosx/native/sun/awt/LWCToolkit.m:
In function ‘__doLoadNativeColors_block_invoke_1’:
/Users/petebrunet/JDK9/JDK-8034768/jdk9/jdk/src/macosx/native/sun/awt/LWCToolkit.m:288:
warning: comparison between signed and unsigned
make[2]: ***
[/Users/petebrunet/JDK9/JDK-8034768/jdk9/build/macosx-x86-normal-server-release/jdk/objs/libawt_lwawt/LWCToolkit.o]
Error 1