Use elsa =1.7.1 as 1.8.0 was an accidental copy of 1.7.0

Author: oli-obk

Cargo.lock

@@ -1418,9 +1418,9 @@ dependencies = [
 
 [[package]]
 name = "elsa"
-version = "1.8.0"
+version = "1.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f74077c3c3aedb99a2683919698285596662518ea13e5eedcf8bdd43b0d0453b"
+checksum = "848fe615fbb0a74d9ae68dcaa510106d32e37d9416207bbea4bd008bd89c47ed"
 dependencies = [
  "stable_deref_trait",
 ]

compiler/rustc_data_structures/Cargo.toml

@@ -32,7 +32,7 @@ stacker = "0.1.15"
 tempfile = "3.2"
 thin-vec = "0.2.12"
 tracing = "0.1"
-elsa = "1.8"
+elsa = "=1.7.1"
 
 [dependencies.parking_lot]
 version = "0.11"