[FIX] assignment of a job or unlink of workers can fail due to concurrent transaction -> catch the exceptions and do nothing because they are already handled by another transaction
[FIX] assignment of a job or unlink of workers can fail due to concurrent transaction -> catch the exceptions and do nothing because they are already handled by another transaction

BT-fgarbely/connector,sylvain-garancher/connector,BT-jmichaud/connector,Antiun/connector,anybox/connector,maljac/connector,Antiun/connector,hugosantosred/connector,BT-jmichaud/connector,brain-tec/connector,MindAndGo/connector,Endika/connector,open-synergy/connector,gurneyalex/connector,dvitme/connector,zhaohuaw/connector,gurneyalex/connector,esousy/connector,open-synergy/connector,mohamedhagag/connector,brain-tec/connector,acsone/connector,sylvain-garancher/connector,acsone/connector,maljac/connector,acsone/connector,Endika/connector,guewen/connector,js-landoo/connector,esousy/connector,fevxie/connector,BT-fgarbely/connector,mohamedhagag/connector,js-landoo/connector,BT-ojossen/connector,brain-tec/connector,hugosantosred/connector,zhaohuaw/connector,BT-ojossen/connector,dvitme/connector,MindAndGo/connector,anybox/connector,guewen/connector,fevxie/connector