Problem Benchmarking HashSet from containers-em

[Nordlöw via Digitalmars-d-learn]

At

https://github.com/nordlow/justd/blob/master/containers_ex.d

I want to benchmark Economic Modelings container packages.

Specifically HashSet with different allocators.

But when I try to use `LocalAllocator` defined as

     alias LocalAllocator = InSituRegion!(n, T.alignof);

at

https://github.com/nordlow/justd/blob/master/containers_ex.d#L59

in call to `hashSet`

     auto hx = iota!T(0, n).hashSet; // TODO Use LocalAllocator


https://github.com/nordlow/justd/blob/master/containers_ex.d#L60

it errors as:

containers_ex.d(17,38): Error: constructor 
containers.hashset.HashSet!(int, InSituRegion!(1048576LU, 4LU), 
generateHash, false).HashSet.this is not callable because it is 
annotated with @disable
/home/per/Work/justd/containers/hashset.d(366,20): Error: struct 
std.experimental.allocator.building_blocks.region.InSituRegion!(1048576LU, 4LU).InSituRegion is not copyable because it is annotated with @disable
/home/per/opt/x86_64-unknown-linux-gnu/dlang/linux/bin64/src/phobos/std/conv.d(4096,13): Error: static assert  "Bucket cannot be emplaced from (InSituRegion!(1048576LU, 4LU))."
/home/per/opt/x86_64-unknown-linux-gnu/dlang/linux/bin64/src/phobos/std/conv.d(4161,18):        instantiated from here: emplaceImpl!(InSituRegion!(1048576LU, 4LU))
/home/per/Work/justd/containers/hashset.d(293,19):        
instantiated from here: emplace!(Bucket, InSituRegion!(1048576LU, 
4LU))
containers_ex.d(17,16):        instantiated from here: 
HashSet!(int, InSituRegion!(1048576LU, 4LU), generateHash, false)
containers_ex.d(60,31):        instantiated from here: 
hashSet!(InSituRegion!(1048576LU, 4LU), Result)

Comint exited abnormally with code 1 at Thu Oct 22 13:55:25

What's wrong?