https://issues.dlang.org/show_bug.cgi?id=19337

          Issue ID: 19337
           Summary: Cannot call std.algorithm.sort twice
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: regression
          Priority: P1
         Component: dmd
          Assignee: nobody@puremagic.com
          Reporter: doob@me.com

The following example worked with DMD 2.081.0 but fails to compile with 2.082.0 and later:

import std.algorithm;

void main()
{
    [1, 2,].sort.sort;
}

The error message is:

phobos/std/algorithm/sorting.d(1877): Error: cannot implicitly convert
expression assumeSorted(r) of type SortedRange!(int[], "a < b") to
SortedRange!(SortedRange!(int[], "a < b"), "a < b")
main.d(5): Error: template instance `std.algorithm.sorting.sort!("a < b",
cast(SwapStrategy)0, SortedRange!(int[], "a < b"))` error instantiating

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