Looks like fakechroot wraps ldd with a perl script that makes silly assumptions:
if ($Format =~ /^elf64-/) { push @Libs, 'linux-vdso.so.1'; $Libs{'linux-vdso.so.1'} = ''; $Ldsodir = "/lib64"; }
Looks like fakechroot wraps ldd with a perl script that makes silly assumptions: