You could try doing a recursive bisection to see which revision caused the change. That is, if r1 is a known good revision (1.1.0 in your case) and r2 is a known bad revision, try the one in the middle, r3; if it fails, recursively apply the bisection to [r1, r3]; if it succeeds, recursively apply the bisection to [r2, r3].
You could try doing a recursive bisection to see which revision caused the change. That is, if r1 is a known good revision (1.1.0 in your case) and r2 is a known bad revision, try the one in the middle, r3; if it fails, recursively apply the bisection to [r1, r3]; if it succeeds, recursively apply the bisection to [r2, r3].