Ambiguous call to views::filter with v0.10.0

Hi everyone, the following snippet with views::filter has been building fine under v0.9.1, but it is not building under v0.10.0. For some reason, the std::vector is considered to be a predicate.

#include <range/v3/all.hpp>
#include <vector>
int main()
{
    std::vector<long> xs;
    ranges::views::filter(xs, [](long x) { return x < 5; });
}

The error is:

floop@pine /tmp g++ -std=c++17 filter.cpp
filter.cpp: In function ‘int main()’:
filter.cpp:7:59: error: call of ‘(const ranges::views::filter_fn) (std::vector<long int>&, main()::<lambda(long int)>)’ is ambiguous
    7 |     ranges::views::filter(xs, [](long x) { return x < 5; });
      |                                                           ^
In file included from /usr/include/range/v3/view.hpp:41,
                 from /usr/include/range/v3/all.hpp:25,
                 from filter.cpp:1:
/usr/include/range/v3/view/filter.hpp:108:28: note: candidate: ‘constexpr auto ranges::views::filter_fn::operator()(Pred, Proj) const [with Pred = std::vector<long int>; Proj = main()::<lambda(long int)>]’
  108 |             constexpr auto operator()(Pred pred, Proj proj) const
      |                            ^~~~~~~~
/usr/include/range/v3/view/filter.hpp:57:28: note: candidate: ‘constexpr concepts::return_t<ranges::filter_view<decltype (ranges::views::{anonymous}::all(declval<Rng>())), Pred>, typename std::enable_if<(((viewable_range<Rng> && input_range<Rng>) && indirect_unary_predicate<Pred, decltype (ranges::{anonymous}::begin(declval<Rng&>()))>) && concepts::detail::CPP_true(concepts::detail::Nil{})), void>::type> ranges::views::cpp20_filter_base_fn::operator()(Rng&&, Pred) const [with Rng = std::vector<long int>&; Pred = main()::<lambda(long int)>; concepts::return_t<ranges::filter_view<decltype (ranges::views::{anonymous}::all(declval<Rng>())), Pred>, typename std::enable_if<(((viewable_range<Rng> && input_range<Rng>) && indirect_unary_predicate<Pred, decltype (ranges::{anonymous}::begin(declval<Rng&>()))>) && concepts::detail::CPP_true(concepts::detail::Nil{})), void>::type> = ranges::filter_view<ranges::ref_view<std::vector<long int> >, main()::<lambda(long int)> >]’
   57 |             constexpr auto operator()(Rng && rng, Pred pred) const
      |

gcc version 9.2.0 (GCC)

clang version 9.0.0 (tags/RELEASE_900/final)

ericniebler / range-v3

Ambiguous call to views::filter with v0.10.0 #1388