Use edition 2021 resolver

shaun-cox · djc · commit 9d6bdd15c1b7 · 2023-09-07T15:58:45.000+02:00
- eliminates a warning when doing cargo update
diff --git a/Cargo.toml b/Cargo.toml
@@ -32,6 +32,7 @@ members = [
     "examples/tracing-grpc",
     "stress",
 ]
+resolver = "2"
 
 [profile.bench]
 # https://doc.rust-lang.org/cargo/reference/profiles.html#bench

Original file line number	Diff line number	Diff line change
`@@ -32,6 +32,7 @@ members = [`
`32`	`32`	`"examples/tracing-grpc",`
`33`	`33`	`"stress",`
`34`	`34`	`]`
	`35`	`+resolver = "2"`
`35`	`36`
`36`	`37`	`[profile.bench]`
`37`	`38`	`# https://doc.rust-lang.org/cargo/reference/profiles.html#bench`