Exactly the same issue as bug 452622, just a different package. Executables abort at runtime with a nasty error if hdf5 is upgraded.
+ 27 Mar 2014; Sébastien Fabbro <bicatali@gentoo.org> h5utils-1.12.1-r2.ebuild: + Switch to EAPI5, add subslot dependency, thanks William Throwe, bug #505296 +