I just now started seeing these build failure errors related to a Sendable requirement:
error: stored property 'key' of 'Sendable'-conforming struct 'HOTP' has non-sendable type 'SymmetricKey'
2025-11-04T19:55:45.9929020Z 128 | /// See `TOTP` for time-based one-time passwords.
2025-11-04T19:55:46.0030070Z 129 | public struct HOTP: OTP, Sendable {
2025-11-04T19:55:46.0131070Z 130 | let key: SymmetricKey
2025-11-04T19:55:46.0232220Z | `- error: stored property 'key' of 'Sendable'-conforming struct 'HOTP' has non-sendable type 'SymmetricKey'
2025-11-04T19:55:46.0333350Z 131 | let digits: OTPDigits
2025-11-04T19:55:46.0434330Z 132 | let digest: OTPDigest
2025-11-04T19:55:46.0513530Z
2025-11-04T19:55:46.0632390Z CryptoKit.SymmetricKey:2:15: note: struct 'SymmetricKey' does not conform to the 'Sendable' protocol
2025-11-04T19:55:46.0748450Z 1 | @available(iOS 13.0, macOS 10.15, watchOS 6.0, tvOS 13.0, *)
2025-11-04T19:55:46.0873420Z 2 | public struct SymmetricKey : ContiguousBytes {
2025-11-04T19:55:46.0995870Z | `- note: struct 'SymmetricKey' does not conform to the 'Sendable' protocol
2025-11-04T19:55:46.1118280Z 3 | public func withUnsafeBytes<R>(_ body: (UnsafeRawBufferPointer) throws -> R) rethrows -> R
2025-11-04T19:55:46.1219720Z 4 | public init<D>(data: D) where D : ContiguousBytes
FWIW I see these failures when building from:
- Xcode 16.0
- Xcode 16.1
- Xcode 16.2
I am currently not seeing these failures when building from:
- Xcode 16.3
- Xcode 16.4
- Xcode 26.0
- Xcode 26.1
This was building from macOS 15.7.1 and Vapor 4.118.0.
I didn't see any issues on the repo that looked related… have we tracked something similar before?
FWIW my build jobs from macOS 15.6 and Vapor 4.117.0 were not failing.