App Store developer FutureTap has just received their first crash report from an iOS 5.0 device indicating that Apple has begun field testing its upcoming operating system.

The application apparently crashed in iOS 5 due to the MKUserLocationBreadCrumb. Developer Will Strafach (Chronic) informed 9to5Mac that this API relates to the iOS maps and location functionality.

Just received the first iOS 5.0 crash report. MKUserLocationBreadCrumb sounds interesting.

Apple is expected to unveil iOS 5.0 at its WWDC 2011 Developer Conference.