bump bootstrap compiler to 1.55

pietroalbini · Mark-Simulacrum · commit 2f315b82afa5 · 2021-08-01T11:19:24.000-04:00
diff --git a/clippy_lints/src/implicit_hasher.rs b/clippy_lints/src/implicit_hasher.rs
@@ -1,5 +1,3 @@
-#![cfg_attr(bootstrap, allow(rustc::default_hash_types))]
-
 use std::borrow::Cow;
 use std::collections::BTreeMap;
 

Original file line number	Diff line number	Diff line change
`@@ -1,5 +1,3 @@`
`1`		`-#![cfg_attr(bootstrap, allow(rustc::default_hash_types))]`
`2`		`-`
`3`	`1`	`use std::borrow::Cow;`
`4`	`2`	`use std::collections::BTreeMap;`
`5`	`3`