multimap support for unique_ptr

i am trying to build a multimap with unique_ptr and i am getting strange compilation errors in Linux

Example Code:

#include <iostream>
#include <memory>
#include <map>

using namespace std;

class Event {
public:
    Event (double time) : _time(time) {}
    double getTime () const { return _time; }
private:
    Event (Event const & e);
    void operator= (Event const &e);
    double _time;
};

class Calendar {
public:
    void addEvent (std::unique_ptr<Event> e) {
        double t = e->getTime(); // get time before trying the next line
        _events.insert(move(make_pair (t, move(e)))); // insert into multimap
    }
private:
    multimap <double, unique_ptr<Event>> _events;
};

int main () {
    unique_ptr<Event> e (new Event(1.0));

    Calendar c;
    c.addEvent (move(e));
}

above code compiles in OSX 10.10 with icpc 15.0.2 20150121

However, linux is another story:

% /opt/intel/bin/icpc --version && cat /etc/redhat-release && /opt/intel/bin/icpc main.cpp -std=c++11  -o main && ./main
icpc (ICC) 15.0.2 20150121
Copyright (C) 1985-2015 Intel Corporation.  All rights reserved.

CentOS release 6.6 (Final)
/usr/include/c++/4.4.7/bits/stl_pair.h(73): error: function "std::unique_ptr<_Tp, _Tp_Deleter>::unique_ptr(const std::unique_ptr<_Tp, _Tp_Deleter> &) [with _Tp=Event, _Tp_Deleter=std::default_delete<Event>]" (declared at line 214 of "/usr/include/c++/4.4.7/bits/unique_ptr.h") cannot be referenced -- it is a deleted function
        _T2 second;                ///< @c second is a copy of the second object
            ^
          detected during:
            implicit generation of "std::pair<_T1, _T2>::pair(const std::pair<const double, std::unique_ptr<Event, std::default_delete<Event>>> &) [with _T1=const double, _T2=std::unique_ptr<Event, std::default_delete<Event>>]" at line 136 of "/usr/include/c++/4.4.7/bits/stl_tree.h"
            instantiation of class "std::pair<_T1, _T2> [with _T1=const double, _T2=std::unique_ptr<Event, std::default_delete<Event>>]" at line 136 of "/usr/include/c++/4.4.7/bits/stl_tree.h"
            instantiation of "std::_Rb_tree_node<_Val>::_Rb_tree_node(_Args &&...) [with _Val=std::pair<const double, std::unique_ptr<Event, std::default_delete<Event>>>, _Args=<const std::pair<const double, std::unique_ptr<Event, std::default_delete<Event>>> &>]" at line 111 of "/usr/include/c++/4.4.7/ext/new_allocator.h"
            instantiation of "void __gnu_cxx::new_allocator<_Tp>::construct(__gnu_cxx::new_allocator<_Tp>::pointer, _Args &&...) [with _Tp=std::_Rb_tree_node<std::pair<const double, std::unique_ptr<Event, std::default_delete<Event>>>>, _Args=<const std::pair<const double, std::unique_ptr<Event, std::default_delete<Event>>> &>]" at line 395 of "/usr/include/c++/4.4.7/bits/stl_tree.h"
            instantiation of "std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::_Link_type std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::_M_create_node(_Args &&...) [with _Key=double, _Val=std::pair<const double, std::unique_ptr<Event, std::default_delete<Event>>>, _KeyOfValue=std::_Select1st<std::pair<const double, std::unique_ptr<Event, std::default_delete<Event>>>>, _Compare=std::less<double>, _Alloc=std::allocator<std::pair<const double, std::unique_ptr<Event,
                      std::default_delete<Event>>>>, _Args=<const std::pair<const double, std::unique_ptr<Event, std::default_delete<Event>>> &>]" at line 881 of "/usr/include/c++/4.4.7/bits/stl_tree.h"
            instantiation of "std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::iterator std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::_M_insert_(std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::_Const_Base_ptr, std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::_Const_Base_ptr, const std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::value_type &) [with _Key=double, _Val=std::pair<const double, std::unique_ptr<Event, std::default_delete<Event>>>,
                      _KeyOfValue=std::_Select1st<std::pair<const double, std::unique_ptr<Event, std::default_delete<Event>>>>, _Compare=std::less<double>, _Alloc=std::allocator<std::pair<const double, std::unique_ptr<Event, std::default_delete<Event>>>>]" at line 1200 of "/usr/include/c++/4.4.7/bits/stl_tree.h"
            instantiation of "std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::iterator std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::_M_insert_equal(const std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::value_type &) [with _Key=double, _Val=std::pair<const double, std::unique_ptr<Event, std::default_delete<Event>>>, _KeyOfValue=std::_Select1st<std::pair<const double, std::unique_ptr<Event, std::default_delete<Event>>>>, _Compare=std::less<double>,
                      _Alloc=std::allocator<std::pair<const double, std::unique_ptr<Event, std::default_delete<Event>>>>]" at line 438 of "/usr/include/c++/4.4.7/bits/stl_multimap.h"
            instantiation of "std::multimap<_Key, _Tp, _Compare, _Alloc>::iterator std::multimap<_Key, _Tp, _Compare, _Alloc>::insert(const std::multimap<_Key, _Tp, _Compare, _Alloc>::value_type &) [with _Key=double, _Tp=std::unique_ptr<Event, std::default_delete<Event>>, _Compare=std::less<double>, _Alloc=std::allocator<std::pair<const double, std::unique_ptr<Event, std::default_delete<Event>>>>]" at line 21 of "main.cpp"

compilation aborted for main.cpp (code 2)

clearly the pair is trying to copy and this is triggering the error.  i have tried this all kinds of different ways and still can't get it to compile in linux.  suggestions?  i would think icpc would support unique_ptr with multimap right?

thanks!