Intermittent android mozjs build failure (fatal error: 'mozilla/PlatformConditionVariable.h' file not found)

[jdm]

        ^
In file included from /Users/worker/.cargo/git/checkouts/mozjs-fa11ffc7d4f1cc2d/5906588/mozjs/js/src/jsmath.cpp:31:
In file included from /Users/worker/.cargo/git/checkouts/mozjs-fa11ffc7d4f1cc2d/5906588/mozjs/js/src/vm/JSContext.h:26:
In file included from /Users/worker/.cargo/git/checkouts/mozjs-fa11ffc7d4f1cc2d/5906588/mozjs/js/src/vm/Runtime.h:24:
In file included from /Users/worker/.cargo/git/checkouts/mozjs-fa11ffc7d4f1cc2d/5906588/mozjs/js/src/builtin/AtomicsObject.h:13:
/Users/worker/.cargo/git/checkouts/mozjs-fa11ffc7d4f1cc2d/5906588/mozjs/js/src/threading/ConditionVariable.h:12:10: fatal error: 'mozilla/PlatformConditionVariable.h' file not found
#include "mozilla/PlatformConditionVariable.h"
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~