is this a bug with writeln / std.algorithm.remove?

[bauss]

On Friday, 16 February 2018 at 12:15:07 UTC, arturg wrote:
> On Friday, 16 February 2018 at 11:45:21 UTC, arturg wrote:
>> this code fails to compile:
>>
>>     void delegate(void*) dg;
>>     void delegate(void*)[] dgs = [dg, dg, dg];
>>     dgs.writeln;
>>     dgs.remove(1).writeln();
>>
>> if you comment out dgs.writeln; it works as expected,
>> it works if you use other types then void*:
>>
>>     void delegate(int*) dg;
>>     void delegate(int*)[] dgs = [dg, dg, dg];
>>     dgs.writeln;
>>     dgs.remove(1).writeln();
>>
>>
>> the compiler is DMD64 D Compiler v2.078.2 and the error 
>> message is:
>>
>> /usr/include/dlang/dmd/std/algorithm/mutation.d(1929): Error: 
>> template std.algorithm.mutation.moveAll cannot deduce function 
>> from argument types !()(void delegate(void*)[], void 
>> delegate(void*)[]), candidates are:
>> /usr/include/dlang/dmd/std/algorithm/mutation.d(1455):        
>> std.algorithm.mutation.moveAll(InputRange1, 
>> InputRange2)(InputRange1 src, InputRange2 tgt) if 
>> (isInputRange!InputRange1 && isInputRange!InputRange2 && 
>> is(typeof(move(src.front, tgt.front))))
>> empty.d(9): Error: template instance 
>> std.algorithm.mutation.remove!(cast(SwapStrategy)2, void 
>> delegate(void*)[], int) error instantiating
>
> running all dmd version on run.dlang.io
> gives me this output:
>
> Up to      2.075.1: Success with output:
> -----
> [void delegate(void*), void delegate(void*), void 
> delegate(void*)]
> [void delegate(void*), void delegate(void*)]
> -----
>
> Since      2.076.1: Failure with output:
> -----
> /path/to/dmd.linux/dmd2/linux/bin64/../../src/phobos/std/algorithm/mutation.d(1929): Error: template std.algorithm.mutation.moveAll cannot deduce function from argument types !()(void delegate(void*)[], void delegate(void*)[]), candidates are:
> /path/to/dmd.linux/dmd2/linux/bin64/../../src/phobos/std/algorithm/mutation.d(1455):        std.algorithm.mutation.moveAll(InputRange1, InputRange2)(InputRange1 src, InputRange2 tgt) if (isInputRange!InputRange1 && isInputRange!InputRange2 && is(typeof(move(src.front, tgt.front))))
> onlineapp.d(7): Error: template instance 
> std.algorithm.mutation.remove!(cast(SwapStrategy)2, void 
> delegate(void*)[], int) error instantiating
> -----

It's definitely a bug, the question is what change has caused it.