chore: use rustfmt imports_granularity option (#17421)

Closes https://github.com/denoland/deno/issues/2699
Closes https://github.com/denoland/deno/issues/2347

Uses unstable rustfmt features. Since dprint invokes `rustfmt` we do not
need to switch the cargo toolchain to nightly. Do we care about
formatting stability of our codebase across Rust versions? (I don't)

2 files changed, 4 insertions, 2 deletions

diff --git a/test_util/src/lib.rs b/test_util/src/lib.rs
index ce1d15d4b..5781f434b 100644
--- a/test_util/src/lib.rs
+++ b/test_util/src/lib.rs
@@ -1610,7 +1610,8 @@ impl HttpServerCount {
         .spawn()
         .expect("failed to execute test_server");
       let stdout = test_server.stdout.as_mut().unwrap();
-      use std::io::{BufRead, BufReader};
+      use std::io::BufRead;
+      use std::io::BufReader;
       let lines = BufReader::new(stdout).lines();
 
       // Wait for all the servers to report being ready.
diff --git a/test_util/src/lsp.rs b/test_util/src/lsp.rs
index 46bda4bb7..465e2a9ba 100644
--- a/test_util/src/lsp.rs
+++ b/test_util/src/lsp.rs
@@ -14,8 +14,9 @@ use regex::Regex;
 use serde::de;
 use serde::Deserialize;
 use serde::Serialize;
+use serde_json::json;
+use serde_json::to_value;
 use serde_json::Value;
-use serde_json::{json, to_value};
 use std::io;
 use std::io::Write;
 use std::path::Path;