Build error with older version of VS2017 compiler

[lalitb]

Describe your environment
Visual Studio 2017 version 15.0
VC++ version: 14.10
_MSC_VER: 1910

Following error are reported while building a sample trace application:

Error C2280 'absl::otel_v1::variant_internal::Union<T0,bool,int64_t,uint64_t,double,opentelemetry::v1::nostd::shared_ptr<opentelemetry::v1::trace::Span>,opentelemetry::v1::nostd::shared_ptr<opentelemetry::v1::trace::SpanContext>,opentelemetry::v1::nostd::shared_ptr<opentelemetry::v1::baggage::Baggage>> &absl::otel_v1::variant_internal::Union<T0,bool,int64_t,uint64_t,double,opentelemetry::v1::nostd::shared_ptr<opentelemetry::v1::trace::Span>,opentelemetry::v1::nostd::shared_ptr<opentelemetry::v1::trace::SpanContext>,opentelemetry::v1::nostd::shared_ptr<opentelemetry::v1::baggage::Baggage>>::operator =(const absl::otel_v1::variant_internal::Union<T0,bool,int64_t,uint64_t,double,opentelemetry::v1::nostd::shared_ptr<opentelemetry::v1::trace::Span>,opentelemetry::v1::nostd::shared_ptr<opentelemetry::v1::trace::SpanContext>,opentelemetry::v1::nostd::shared_ptr<opentelemetry::v1::baggage::Baggage>> &)': attempting to reference a deleted function Project4 c:\users\labhas\obs\otel\opentelemetry-cpp\api\include\opentelemetry\nostd\internal\absl\meta\type_traits.h 166

Error C4996 'std::equal::_Unchecked_iterators::_Deprecate': Call to 'std::equal' with parameters that may be unsafe - this call relies on the caller to check that the passed values are correct. To disable this warning, use -D_SCL_SECURE_NO_WARNINGS. See documentation on how to use Visual C++ 'Checked Iterators' Project4 c:\program files (x86)\microsoft visual studio\2017\enterprise\vc\tools\msvc\14.10.25017\include\xutility 2889

Steps to reproduce

#include "opentelemetry\context\context.h"
int main()
{
}

will give the first error

And

#include "opentelemetry\context\context_value.h"
int main()
{
}

will give second error

What is the expected behavior?
No error

What is the actual behavior?
Error as mentioned below

Additional context
Our CI pipeline runs on VS2019, so these errors are not seen there.