Remove type ambiguity of batch_size export.rs

[p-ackland]

Due to a conflicting implementation of PartialOrd in deranged 0.4.1 which is a transitive dependency of aws-config, type inference in usize < NonZeroUsize no longer works.

The maintainer of deranged has indicated that he wont be reverting this change and downstream libs need to be updated to resolve the issue.

Conflicting impls:

deranged 0.4.1

impl<MIN, MAX> PartialOrd<deranged::RangedUsize<MIN, MAX>> for usize

core

impl PartialOrd for usize

This issue is only present with feature awssdk enabled.

Error:

error[E0283]: type annotations needed
   --> src/export.rs:130:56
    |
130 |                     if queue.len() < config.batch_size.into() {
    |                                    -                   ^^^^
    |                                    |
    |                                    type must be known at this point
    |
    = note: multiple `impl`s satisfying `usize: PartialOrd<_>` found in the following crates: `core`, `deranged`:
            - impl PartialOrd for usize;
            - impl<MIN, MAX> PartialOrd<deranged::RangedUsize<MIN, MAX>> for usize
              where the constant `MIN` has type `usize`, the constant `MAX` has type `usize`;
help: try using a fully qualified path to specify the expected types
    |
130 |                     if queue.len() < <NonZero<usize> as Into<T>>::into(config.batch_size) {
    |                                      ++++++++++++++++++++++++++++++++++                 ~

For more information about this error, try `rustc --explain E0283`.
error: could not compile `tracing-cloudwatch` (lib) due to 1 previous error

[ymgyt]

Thank you for the detailed explanation.

[ymgyt]

We've released v0.3.1.