SE-0279: Multiple Trailing Closures

While looking at the places in swift repo where there are closures at the end of calls, but don't use the trailing closure syntax, I noticed that a lot of them are used for BenchmarkInfo initializers

  BenchmarkInfo(
    name: "AngryPhonebook.ASCII.Small",
    runFunction: { angryPhonebook($0, ascii) },
    tags: t,
    setUpFunction: { blackHole(ascii) }),

This proposal would not change that. Even more reasons against this proposal.