feat: update MSRV to Rust 1.60.0

This is `tonic` 0.9's MSRV, so we must update our minimum Rust version
as well.

.github/workflows/ci.yaml

@@ -55,9 +55,8 @@ jobs:
         os: [ubuntu-latest, macos-latest, windows-latest]
         rust: [stable]
         include:
-          # Make 1.58 MSRV due to <=1.57 failing to build console-api due to a bug
-          # with cargo version resolution.
-          - rust: 1.58.0
+          # Make 1.60 MSRV, as it's Tonic 0.9's MSRV.
+          - rust: 1.60.0
             os: ubuntu-latest
           # Try to build on the latest nightly. This job is allowed to fail, but
           # it's useful to help catch bugs in upcoming Rust versions.

console-api/Cargo.toml

@@ -3,7 +3,7 @@ name = "console-api"
 version = "0.4.0"
 license = "MIT"
 edition = "2021"
-rust-version = "1.58.0"
+rust-version = "1.60.0"
 authors = ["Eliza Weisman <eliza@buoyant.io>", "Tokio Contributors <team@tokio.rs>",]
 readme = "README.md"
 repository = "https://github.com/tokio-rs/console/"

console-subscriber/Cargo.toml

@@ -3,7 +3,7 @@ name = "console-subscriber"
 version = "0.1.8"
 license = "MIT"
 edition = "2021"
-rust-version = "1.58.0"
+rust-version = "1.60.0"
 authors = ["Eliza Weisman <eliza@buoyant.io>", "Tokio Contributors <team@tokio.rs>",]
 readme = "README.md"
 repository = "https://github.com/tokio-rs/console/"

tokio-console/Cargo.toml

@@ -4,7 +4,7 @@ version = "0.1.7"
 license = "MIT"
 repository = "https://github.com/tokio-rs/console"
 edition = "2021"
-rust-version = "1.58.0"
+rust-version = "1.60.0"
 authors = ["Eliza Weisman <eliza@buoyant.io>", "Tokio Contributors <team@tokio.rs>",]
 readme = "README.md"
 default-run = "tokio-console"

xtask/Cargo.toml

@@ -3,7 +3,7 @@ name = "xtask"
 version = "0.1.0"
 license = "MIT"
 edition = "2021"
-rust-version = "1.56.0"
+rust-version = "1.60.0"
 publish = false
 
 [dependencies]