Cannot construct `Tensor` in compiler-integrated REPL about swift HOT 4 CLOSED

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SWIFT_PACKAGE=tensorflow_osx swift/utils/build-toolchain

SWIFT_PACKAGE=tensorflow_linux swift/utils/build-toolchain

swift/swift-nightly-install/usr/bin/swift

Welcome to Swift version 4.2-dev (LLVM 04bdb56f3d, Clang b44dbbdf44). Type :help for assistance.
  1>

$ build/buildbot_osx/swift-macosx-x86_64/bin/swift -O
***  You are running Swift's integrated REPL,  ***
***  intended for compiler and stdlib          ***
***  development and testing purposes only.    ***
***  The full REPL is built as part of LLDB.   ***
***  Type ':help' for assistance.              ***
(swift) import TensorFlow
(swift) var x = Tensor([[1, 2], [3, 4]])
// x : Tensor<Double> = [[1.0, 2.0], [3.0, 4.0]]
(swift) x * x
// r0 : Tensor<Double> = [[1.0, 4.0], [9.0, 16.0]]
(swift) for _ in 0..<3 {
          x += x
        }
(swift) x
// x : Tensor<Double> = [[8.0, 16.0], [24.0, 32.0]]