diesel did not compile

[adals]

hello everyone
at my cargo.toml
diesel = { version = "1.2.0", features = ["postgres"] }
then compile i got

Win8:erp1 $ cargo run
Compiling diesel v1.2.2
error[E0053]: method metadata has an incompatible type for trait
--> /Users/.cargo/registry/src/gh.neting.cc-1ecc6299db9ec823/diesel-1.2.2/src/pg/types/array.rs:14:25
|
14 | fn metadata(lookup: &PgMetadataLookup) -> PgTypeMetadata {
| ^^^^^^^^^^^^^^^^^ expected associated type, found struct pg::metadata_lookup::PgMetadataLookup
|
::: /Users/.cargo/registry/src/gh.neting.cc-1ecc6299db9ec823/diesel-1.2.2/src/sql_types/mod.rs:402:25
|
402 | fn metadata(lookup: &Self::MetadataLookup) -> Self::TypeMetadata;
| --------------------- type in trait
|
= note: expected type fn(&<pg::backend::Pg as sql_types::TypeMetadata>::MetadataLookup) -> <pg::backend::Pg as sql_types::TypeMetadata>::TypeMetadata
found type fn(&pg::metadata_lookup::PgMetadataLookup) -> pg::backend::PgTypeMetadata

error: aborting due to previous error

For more information about this error, try rustc --explain E0053.
error: Could not compile diesel.

To learn more, run the command again with --verbose.

Win8:~ $ rustc -V
rustc 1.27.0-nightly (2f2a11dfc 2018-05-16)

[Eijebong]

Dupe of #1700 and #1701
This is getting fixed there: rust-lang/rust#50876