Fix [demos][skip hazardlib]
Fix [demos][skip hazardlib]


Former-commit-id: e08fab97765e2ba3066c8275d28c9a6380fc96e3 [formerly 68b1dddaa29d5962b41492831344cbec97834916] [formerly 68b1dddaa29d5962b41492831344cbec97834916 [formerly 6af3e48a268538f0cf9824fee788677047afbefc]]
Former-commit-id: 0de34cc480aafe820d707329cc804f3efe72faf3
Former-commit-id: 9cc490081d09ac03cd526f5b7fb66828f4f3d04e
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine