import std.algorithm;

void main() {
	int[] arr;
	
	arr.multiSort!((a, b) => a < b, (a, b) => a < b, SwapStrategy.stable);
}

Compilation output:
/opt/compilers/dmd2/include/std/algorithm/sorting.d(782): Error: template std.algorithm.sorting.partition3 cannot deduce function from argument types !((a, b) => a < b, cast(SwapStrategy)2)(int[], int), candidates are:
/opt/compilers/dmd2/include/std/algorithm/sorting.d(504):        std.algorithm.sorting.partition3(alias less = "a < b", SwapStrategy ss = SwapStrategy.unstable, Range, E)(Range r, E pivot) if (ss == SwapStrategy.unstable && isRandomAccessRange!Range && hasSwappableElements!Range && hasLength!Range && is(typeof(binaryFun!less(r.front, pivot)) == bool) && is(typeof(binaryFun!less(pivot, r.front)) == bool) && is(typeof(binaryFun!less(r.front, r.front)) == bool))
/d986/f960.d(6): Error: template instance f960.main.multiSort!((a, b) => a < b, (a, b) => a < b, cast(SwapStrategy)2).multiSort!(int[]) error instantiating