What does dmd 2.066 want from me?

[Artem Tarasov via Digitalmars-d-learn]

I'm trying to compile my software with the latest compiler, and 
it spits out the following error:

$ make
<...>
rdmd --force --build-only -IBioD -g -L-Lhtslib -L-l:libhts.a 
-L-l:libphobos2.a -ofbuild/sambamba.o main.d
<...>
/tmp/.rdmd-1000/rdmd-main.d-5E103AD0DCA0998F00B4F9BA5B181EDE/objs/sambamba.o.o:(.data._D80TypeInfo_S3bio3bam4read41__T12EagerBamReadTS3bio3bam4read7BamReadZ12EagerBamRead6__initZ+0x30): 
undefined reference to 
`_D3bio3bam4read41__T12EagerBamReadTS3bio3bam4read7BamReadZ12EagerBamRead9__xtoHashFNbNeKxS3bio3bam4read41__T12EagerBamReadTS3bio3bam4read7BamReadZ12EagerBamReadZm'
/tmp/.rdmd-1000/rdmd-main.d-5E103AD0DCA0998F00B4F9BA5B181EDE/objs/sambamba.o.o:(.data._D80TypeInfo_S3bio3bam4read41__T12EagerBamReadTS3bio3bam4read7BamReadZ12EagerBamRead6__initZ+0x38): 
undefined reference to 
`_D3bio3bam4read41__T12EagerBamReadTS3bio3bam4read7BamReadZ12EagerBamRead11__xopEqualsFKxS3bio3bam4read41__T12EagerBamReadTS3bio3bam4read7BamReadZ12EagerBamReadKxS3bio3bam4read41__T12EagerBamReadTS3bio3bam4read7BamReadZ12EagerBamReadZb'

What the heck do these lines mean? Presumably they come from the 
recent change in hash implementation, but I don't use this struct 
in any dictionary whatsoever! It doesn't have opCmp either and 
perfectly worked until now.