This is to use LazyRows as explainedhere.

extern crate fallible_iterator;use fallible_iterator::FallibleIterator;/// Code involving LazyRow

To use theFallibleIterator, the user needs to add fallible-iterator to their Cargo.toml which can lead to version mismatch. For example, the current latest version for the fallible-iterator crate is0.2.0 on crates.io but rust-postgres uses0.1.6 for the same crate.

Keeping the fallible-iterator crate version in local Cargo.toml synchronized with the one used by the postgres crate can be a source of human error leading to subtle bugs.

One option could be to expose theFallibleIterator from postgres crate itself.