rust 1.57.0 compatibility issue

[rzolau]

Building using Rust-1.57.0 with Cargo.toml:

[dependencies]
clap = "*"
log = "*"
env_logger = "*"
lsh-rs = {version = "*", features = ["blas"]}
ndarray = {version = "*", features = ["blas"]}

results in the following error:

   Compiling lsh-rs v0.4.0
error[E0603]: module `export` is private
   --> XXX/.cargo/registry/src/github.com-1ecc6299db9ec823/lsh-rs-0.4.0/src/hash.rs:8:12
    |
8   | use serde::export::PhantomData;
    |            ^^^^^^ private module
    |
note: the module `export` is defined here
   --> XXX/.cargo/registry/src/github.com-1ecc6299db9ec823/serde-1.0.136/src/lib.rs:276:5
    |
276 | use self::__private as export;
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^

error[E0603]: module `export` is private
   --> XXX/.cargo/registry/src/github.com-1ecc6299db9ec823/lsh-rs-0.4.0/src/table/sqlite.rs:9:12
    |
9   | use serde::export::PhantomData;
    |            ^^^^^^ private module
    |
note: the module `export` is defined here
   --> XXX/.cargo/registry/src/github.com-1ecc6299db9ec823/serde-1.0.136/src/lib.rs:276:5
    |
276 | use self::__private as export;
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^

error[E0603]: module `export` is private
   --> XXX/.cargo/registry/src/github.com-1ecc6299db9ec823/lsh-rs-0.4.0/src/data.rs:4:12
    |
4   | use serde::export::fmt::{Debug, Display};
    |            ^^^^^^ private module
    |
note: the module `export` is defined here
   --> XXX/.cargo/registry/src/github.com-1ecc6299db9ec823/serde-1.0.136/src/lib.rs:276:5
    |
276 | use self::__private as export;
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^

This seems to be caused by change to serde. Any chance to bump up the implementation to the latest Rust?