From 03bb3bde90a52cfc1d64c15263013d97a3d7aad2 Mon Sep 17 00:00:00 2001
From: bishtpawan <pawan.bisht@knoldus.com>
Date: Tue, 24 Mar 2020 13:03:01 +0530
Subject: [PATCH] Add long error explanation for E0710 #61137

---
 src/librustc_error_codes/error_codes.rs       |  2 +-
 src/librustc_error_codes/error_codes/E0710.md | 25 +++++++++++++++++++
 src/test/ui/unknown-lint-tool-name.stderr     |  3 +++
 3 files changed, 29 insertions(+), 1 deletion(-)
 create mode 100644 src/librustc_error_codes/error_codes/E0710.md

diff --git a/src/librustc_error_codes/error_codes.rs b/src/librustc_error_codes/error_codes.rs
index 33bfaddc39c9..86da425060ef 100644
--- a/src/librustc_error_codes/error_codes.rs
+++ b/src/librustc_error_codes/error_codes.rs
@@ -393,6 +393,7 @@ E0701: include_str!("./error_codes/E0701.md"),
 E0704: include_str!("./error_codes/E0704.md"),
 E0705: include_str!("./error_codes/E0705.md"),
 E0706: include_str!("./error_codes/E0706.md"),
+E0710: include_str!("./error_codes/E0710.md"),
 E0712: include_str!("./error_codes/E0712.md"),
 E0713: include_str!("./error_codes/E0713.md"),
 E0714: include_str!("./error_codes/E0714.md"),
@@ -604,7 +605,6 @@ E0748: include_str!("./error_codes/E0748.md"),
     E0708, // `async` non-`move` closures with parameters are not currently
            // supported
 //  E0709, // multiple different lifetimes used in arguments of `async fn`
-    E0710, // an unknown tool name found in scoped lint
     E0711, // a feature has been declared with conflicting stability attributes
     E0717, // rustc_promotable without stability attribute
 //  E0721, // `await` keyword
diff --git a/src/librustc_error_codes/error_codes/E0710.md b/src/librustc_error_codes/error_codes/E0710.md
new file mode 100644
index 000000000000..c0b58eb00f31
--- /dev/null
+++ b/src/librustc_error_codes/error_codes/E0710.md
@@ -0,0 +1,25 @@
+An unknown tool name found in scoped lint
+
+Erroneous code example:
+
+```compile_fail,E0710
+#[allow(clipp::filter_map)] // error: an unknown tool name found in scoped lint: `clipp::filter_map`
+
+fn main() {
+    /**
+    *business logic
+    */
+}
+```
+
+Please verify you didn't misspell the tool's name or that you didn't
+forget to import it in you project:
+
+```
+#[allow(clippy::filter_map)] // ok!
+fn main() {
+    /**
+    *business logic
+    */
+}
+```
\ No newline at end of file
diff --git a/src/test/ui/unknown-lint-tool-name.stderr b/src/test/ui/unknown-lint-tool-name.stderr
index 1940f61a47b6..f98e15f7cf2f 100644
--- a/src/test/ui/unknown-lint-tool-name.stderr
+++ b/src/test/ui/unknown-lint-tool-name.stderr
@@ -36,3 +36,6 @@ LL | #[allow(foo::bar)]
 
 error: aborting due to 6 previous errors
 
+For more information about this error, try `rustc --explain E0710`.
+
+