WinRT Originate Error 0x40080201

I was writing some code and hit an error when doing heavy parallelism over an IVectorView<StorageFile^>^>. The Debug output was:

First-chance exception at 0x76e86118 in tool.exe: 0x40080201: WinRT originate error.

First-chance exception at 0x76e86118 in tool.exe: Microsoft C++ exception: Platform::FailureException ^ at memory location 0x02daec60.

The code goes something like:

task<vector<long long>> GetDatesTakenFromFiles(IVectorView<StorageFile^>^ filesInFolder)
{
    vector<task<long long>> datesTakenTasks;

    for each (auto file in filesInFolder)
    {
        datesTakenTasks.push_back(
            create_task(file->Properties->GetImagePropertiesAsync())
            .then([=](FileProperties::ImageProperties^ properties) {
                return properties->DateTaken.UniversalTime;
            })
        );
    }

    return when_all(begin(datesTakenTasks), end(datesTakenTasks));
}

After some investigation, I found out that referencing the file object from inside the inner lambda would make it work:

task<vector<long long>> GetDatesTakenFromFiles(IVectorView<StorageFile^>^ filesInFolder)
{
    vector<task<long long>> datesTakenTasks;

    for each (auto file in filesInFolder)
    {
        datesTakenTasks.push_back(
            create_task(file->Properties->GetImagePropertiesAsync())
            .then([=](FileProperties::ImageProperties^ properties) {
                // I don't know why, but the file was being cleaned up. This prevents it.
                UNREFERENCED_PARAMETER(file);
                return properties->DateTaken.UniversalTime;
            })
        );
    }

    return when_all(begin(datesTakenTasks), end(datesTakenTasks));
}

As a side note, I have to comment that this error only happened when iterating using FolderDepth::Shallow, but not FolderDepth::Deep.