ERROR: Build failed for targets 'all bootcycle-images docs' in configuration '/cygdrive/r/buildroot' (exit code 2)

=== Output from failing command(s) repeated here ===
* For target support_test_hotspot_jtreg_native_support_libBooleanArrayCriticalLocker_libBooleanArrayCriticalLocker.obj:
libBooleanArrayCriticalLocker.cpp
r:\openjdk\test\hotspot\jtreg\vmTestbase\nsk\share\jni\ExceptionCheckingJniEnv.cpp(51) : error C3861: 'snprintf': identifier not found
        r:\openjdk\test\hotspot\jtreg\vmTestbase\nsk\share\jni\ExceptionCheckingJniEnv.cpp(50) : while compiling class template member function 'void `anonymous-namespace'::JNIVerifier<jclass>::ProcessReturnError(void)'
        r:\openjdk\test\hotspot\jtreg\vmTestbase\nsk\share\jni\ExceptionCheckingJniEnv.cpp(46) : see reference to function template instantiation 'void `anonymous-namespace'::JNIVerifier<jclass>::ProcessReturnError(void)' being compiled
        r:\openjdk\test\hotspot\jtreg\vmTestbase\nsk\share\jni\ExceptionCheckingJniEnv.cpp(86) : see reference to class template instantiation '`anonymous-namespace'::JNIVerifier<jclass>' being compiled
r:\openjdk\test\hotspot\jtreg\vmTestbase\nsk\share\jni\ExceptionCheckingJniEnv.cpp(64) : error C3861: 'snprintf': identifier not found
   ... (rest of output omitted)