`cargo update -p diesel -p diesel_migrations --aggressive`
`cargo update -p diesel -p diesel_migrations --aggressive`

```
Updating migrations_internals v1.4.0 -> v1.4.1
Updating migrations_macros v1.4.1 -> v1.4.2
Updating pq-sys v0.4.4 -> v0.4.6
Updating scheduled-thread-pool v0.2.3 -> v0.2.4
```

rust-lang/crates.io,rust-lang/crates.io,rust-lang/crates.io,rust-lang/crates.io