Freeze exception: diagnostics

[Michael Tautschnig]

Hi release team members,

Could you please unblock diagnostics (0.3.1-3) as this fixes an FTBFS (#593044)
and will also be buildable with current ACE from unstable, should that make it
into squeeze.

Thanks in advance,
Michael

pgpX63AWRd5Oj.pgp
Description: PGP signature