1 files changed, 12 insertions, 0 deletions

diff --git a/crates/ra_flycheck/src/lib.rs b/crates/ra_flycheck/src/lib.rs
index 6c4170529..0e2ee8698 100644
--- a/crates/ra_flycheck/src/lib.rs
+++ b/crates/ra_flycheck/src/lib.rs
@@ -3,6 +3,7 @@
 //! LSP diagnostics based on the output of the command.
 
 use std::{
+    fmt,
     io::{self, BufReader},
     path::PathBuf,
     process::{Command, Stdio},
@@ -31,6 +32,17 @@ pub enum FlycheckConfig {
     },
 }
 
+impl fmt::Display for FlycheckConfig {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            FlycheckConfig::CargoCommand { command, .. } => write!(f, "cargo {}", command),
+            FlycheckConfig::CustomCommand { command, args } => {
+                write!(f, "{} {}", command, args.join(" "))
+            }
+        }
+    }
+}
+
 /// Flycheck wraps the shared state and communication machinery used for
 /// running `cargo check` (or other compatible command) and providing
 /// diagnostics based on the output.