Multiple products Async in Async, Core build issue

[leisurehound]

I'm finding the following in building with this package:

Completed resolution in 32.14s
Removing https://github.com/anatoliykant/SwiftMQTT.git
Cloning https://github.com/vapor/async.git
Resolving https://github.com/vapor/async.git at 1.0.0-rc.1.1
Cloning https://github.com/vapor/cepoll.git
Resolving https://github.com/vapor/cepoll.git at 0.2.0
Cloning https://github.com/vapor/sockets
Resolving https://github.com/vapor/sockets at 2.2.4
Cloning https://github.com/apple/swift-nio.git
Resolving https://github.com/apple/swift-nio.git at 1.14.2
Cloning https://github.com/apple/swift-nio-zlib-support.git
Resolving https://github.com/apple/swift-nio-zlib-support.git at 1.0.0
Cloning https://github.com/vapor/core.git
Resolving https://github.com/vapor/core.git at 3.10.0
Cloning https://github.com/HJianBo/Mqtt.git
Resolving https://github.com/HJianBo/Mqtt.git at 0.3.0
'CEpoll' /home/pi/mx5telem/.build/checkouts/cepoll: warning: Ignoring declared target(s) 'CEpoll' in the system package
**error: multiple products named 'Async' in: Async, Core
error: multiple targets named 'Async' in: Async, Core
error: multiple targets named 'AsyncTests' in: Async, Core**
warning: dependency 'Mqtt' is not used by any target

Is this a Vapor core is now including async so removing that as a dependency from sockets resolves this?