Incompatible with Compat v3.0

[dlfivefifty]

I'm getting this error on a Travis build:

ERROR: Unsatisfiable requirements detected for package DiffResults [163ba53b]:
270 DiffResults [163ba53b] log:
271 ├─possible versions are: 0.0.4 or uninstalled
272 ├─restricted by compatibility requirements with ForwardDiff [f6369f11] to versions: 0.0.4
273 │ └─ForwardDiff [f6369f11] log:
274 │   ├─possible versions are: [0.9.0, 0.10.0-0.10.6] or uninstalled
275 │   └─restricted to versions * by an explicit requirement, leaving only versions [0.9.0, 0.10.0-0.10.6]
276 └─restricted by compatibility requirements with Compat [34da2185] to versions: uninstalled — no versions left
277   └─Compat [34da2185] log:
278     ├─possible versions are: [1.0.0-1.0.1, 1.1.0, 1.2.0, 1.3.0, 1.4.0, 1.5.0-1.5.1, 2.0.0, 2.1.0, 2.2.0, 3.0.0] or uninstalled
279     └─restricted to versions 3.0.0 by an explicit requirement, leaving only versions 3.0.0

[gdalle]

These versions are all pretty outdated, closing the issue now. Feel free to reopen if the bug is still there