Building application with LDC and -flto=thin fails in link stage

[Nordlöw]

When I try build my application using LDC and -flto=thin it fails 
in the final linking as

ldmd2 
-of.dub/build/application-release-nobounds-lto-linux.posix-x86_64-ldc_2078-9FDE475789CA2E324E9DAE6A959C2B7F/knetquery .dub/build/application-release-nobounds-lto-linux.posix-x86_64-ldc_2078-9FDE475789CA2E324E9DAE6A959C2B7F/knetquery.o ../../.dub/packages/gmp-d-master/gmp-d/.dub/build/library-release-nobounds-lto-linux.posix-x86_64-ldc_2078-0CE08DAF93E48445402E07C3537FA4E6/libgmp-d.a phobos-next/.dub/build/library-release-nobounds-lto-linux.posix-x86_64-ldc_2078-933571CC843E8D13926CEC14051E7195/libknet_phobos-next.a -L--no-as-needed -L-lzstd -L-lgmp -L-lc -L-lreadline -L-lz -L-lbz2
/usr/bin/ld: error: 
.dub/build/application-release-nobounds-lto-linux.posix-x86_64-ldc_2078-9FDE475789CA2E324E9DAE6A959C2B7F/knetquery.o:1:3: invalid character
/usr/bin/ld: error: 
.dub/build/application-release-nobounds-lto-linux.posix-x86_64-ldc_2078-9FDE475789CA2E324E9DAE6A959C2B7F/knetquery.o:1:3: syntax error, unexpected $end
/usr/bin/ld: error: 
.dub/build/application-release-nobounds-lto-linux.posix-x86_64-ldc_2078-9FDE475789CA2E324E9DAE6A959C2B7F/knetquery.o: not an object or archive
/usr/lib/gcc/x86_64-linux-gnu/7/../../../x86_64-linux-gnu/Scrt1.o:function _start: error: undefined reference to 'main'
collect2: error: ld returned 1 exit status
Error: /usr/bin/gcc failed with status: 1
FAIL 
.dub/build/application-release-nobounds-lto-linux.posix-x86_64-ldc_2078-9FDE475789CA2E324E9DAE6A959C2B7F/ knetquery executable
ldmd2 failed with exit code 1.

What could be wrong?