Constant TELL_UNSUPPORTED_CHECK 

pub const TELL_UNSUPPORTED_CHECK: u32 = liblzma_sys::LZMA_TELL_UNSUPPORTED_CHECK; // 2u32

A flag passed when initializing a decoder, causes Stream::process to return Error::UnsupportedCheck if the stream being decoded has an integrity check that cannot be verified by this build of liblzma.