Swift 4 issue

[adrian-niculescu]

Using CocoaPods 1.4.0 I set the swift-version in my .podspec file to 4 liek so:
s.swift_version = '4.0'

When compiling, I get the following warning:
- WARN | xcodebuild: Starscream/Sources/WebSocket.swift:125:5: warning: 'weak' should not be applied to a property declaration in a protocol and will be disallowed in future versions

this refers to the WSStream protocol:

public protocol WSStream {
    weak var delegate: WSStreamDelegate? {get set}
    ....
}

See this discussion on Stack Overflow about this kind of issue:

[acmacalister]

How are you getting this warning? I haven't seen this in Xcode Version 9.2 (9C40b), with the compiler set to Swift 4.0. Does anyone else receive this warning?

[chadham]

Am getting the same warning from line:
125 weak var delegate: WSStreamDelegate? {get set} //'weak' should not be applied to a property declaration in a protocol and will be disallowed in future versions

Running Swift 4.0 on Xcode Version 9.3 beta (9Q98q)

[danylovaolha]

The same warning at the same line (Xcode 9.3)

[daltoniam]

Version 3.0.5 has been released. It removed the weak and should fix this warning.
https://github.com/apple/swift-evolution/blob/master/proposals/0186-remove-ownership-keyword-support-in-protocols.md