Peter realized what he was looking at. The NaCl plug-in wasn't failing; it was mourning. It was a "ghost in the machine." The code had been written by a developer years ago who knew NaCl was going to die. They had embedded a message into the memory management routines, a logic bomb designed to trigger only if the plug-in was running on a deprecated, patched-together engine like the one Peter had built.
Despite its technical merits, NaCl faced several significant hurdles that eventually led to its sunset: nacl-web-plug-in