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+// check-pass
+
+// Bastion of the Turbofish
+// ------------------------
+// Beware travellers, lest you venture into waters callous and unforgiving,
+// where hope must be abandoned, ere it is cruelly torn from you. For here
+// stands the bastion of the Turbofish: an impenetrable fortress holding
+// unshaking against those who would dare suggest the supererogation of the
+// Turbofish.
+//
+// Once I was young and foolish and had the impudence to imagine that I could
+// shake free from the coils by which that creature had us tightly bound. I
+// dared to suggest that there was a better way: a brighter future, in which
+// Rustaceans both new and old could be rid of that vile beast. But alas! In
+// my foolhardiness my ignorance was unveiled and my dreams were dashed
+// unforgivingly against the rock of syntactic ambiguity.
+//
+// This humble program, small and insignificant though it might seem,
+// demonstrates that to which we had previously cast a blind eye: an ambiguity
+// in permitting generic arguments to be provided without the consent of the
+// Great Turbofish. Should you be so naïve as to try to revolt against its
+// mighty clutches, here shall its wrath be indomitably displayed. This
+// program must pass for all eternity: forever watched by the guardian angel
+// which gave this beast its name, and stands fundamentally at odds with the
+// impetuous rebellion against the Turbofish.
+//
+// My heart aches in sorrow, for I know I am defeated. Let this be a warning
+// to all those who come after: for they too must overcome the impassible
+// hurdle of defeating the great beast, championed by a resolute winged
+// guardian.
+//
+// Here stands the Bastion of the Turbofish, a memorial to Anna Harren,
+// Guardian Angel of these Hallowed Grounds. <3
+
+// See https://github.com/rust-lang/rust/pull/53562
+// and https://github.com/rust-lang/rfcs/pull/2527
+// and https://twitter.com/garblefart/status/1393236602856611843
+// for context.
+
+fn main() {
+    let (the, guardian, stands, resolute) = ("the", "Turbofish", "remains", "undefeated");
+    let _: (bool, bool) = (the<guardian, stands>(resolute));
+}