Fix ui tests with better error code usage

31 files changed, 39 insertions, 22 deletions

diff --git a/src/test/ui/asm/asm-bad-clobber.stderr b/src/test/ui/asm/asm-bad-clobber.stderr
index 15a14e776ba..a279421241f 100644
--- a/src/test/ui/asm/asm-bad-clobber.stderr
+++ b/src/test/ui/asm/asm-bad-clobber.stderr
@@ -6,3 +6,4 @@ LL |         asm!("xor %eax, %eax" : : : "{eax}");
 
 error: aborting due to previous error
 
+For more information about this error, try `rustc --explain E0664`.
diff --git a/src/test/ui/asm/asm-in-bad-modifier.stderr b/src/test/ui/asm/asm-in-bad-modifier.stderr
index b71eb8649ba..d45b3e57038 100644
--- a/src/test/ui/asm/asm-in-bad-modifier.stderr
+++ b/src/test/ui/asm/asm-in-bad-modifier.stderr
@@ -12,3 +12,5 @@ LL |         asm!("mov $1, $0" : "=r"(y) : "+r"(5));
 
 error: aborting due to 2 previous errors
 
+Some errors have detailed explanations: E0662, E0663.
+For more information about an error, try `rustc --explain E0662`.
diff --git a/src/test/ui/asm/asm-out-no-modifier.stderr b/src/test/ui/asm/asm-out-no-modifier.stderr
index 387a603f90e..99134ceba33 100644
--- a/src/test/ui/asm/asm-out-no-modifier.stderr
+++ b/src/test/ui/asm/asm-out-no-modifier.stderr
@@ -6,3 +6,4 @@ LL |         asm!("mov $1, $0" : "r"(x) : "r"(5));
 
 error: aborting due to previous error
 
+For more information about this error, try `rustc --explain E0661`.
diff --git a/src/test/ui/asm/issue-51431.stderr b/src/test/ui/asm/issue-51431.stderr
index 132eea126d6..f78d1831973 100644
--- a/src/test/ui/asm/issue-51431.stderr
+++ b/src/test/ui/asm/issue-51431.stderr
@@ -6,3 +6,4 @@ LL |         asm! {"mov $0,$1"::"0"("bx"),"1"(0x00)}
 
 error: aborting due to previous error
 
+For more information about this error, try `rustc --explain E0669`.
diff --git a/src/test/ui/bad/bad-intrinsic-monomorphization.stderr b/src/test/ui/bad/bad-intrinsic-monomorphization.stderr
index 34fdba11367..dee33f574d8 100644
--- a/src/test/ui/bad/bad-intrinsic-monomorphization.stderr
+++ b/src/test/ui/bad/bad-intrinsic-monomorphization.stderr
@@ -18,3 +18,4 @@ LL |     simd_add(a, b)
 
 error: aborting due to 3 previous errors
 
+For more information about this error, try `rustc --explain E0511`.
diff --git a/src/test/ui/error-codes/E0511.stderr b/src/test/ui/error-codes/E0511.stderr
index 5f8be0c61d3..1362a3d1f25 100644
--- a/src/test/ui/error-codes/E0511.stderr
+++ b/src/test/ui/error-codes/E0511.stderr
@@ -6,3 +6,4 @@ LL |     unsafe { simd_add(0, 1); }
 
 error: aborting due to previous error
 
+For more information about this error, try `rustc --explain E0511`.
diff --git a/src/test/ui/error-codes/E0660.stderr b/src/test/ui/error-codes/E0660.stderr
index ce34a9b01d7..d355531ef5d 100644
--- a/src/test/ui/error-codes/E0660.stderr
+++ b/src/test/ui/error-codes/E0660.stderr
@@ -12,3 +12,4 @@ LL |     asm!("nop" "nop" : "=r"(a));
 
 error: aborting due to 2 previous errors
 
+For more information about this error, try `rustc --explain E0660`.
diff --git a/src/test/ui/error-codes/E0661.stderr b/src/test/ui/error-codes/E0661.stderr
index 3537e0bc3a4..6e849649aca 100644
--- a/src/test/ui/error-codes/E0661.stderr
+++ b/src/test/ui/error-codes/E0661.stderr
@@ -12,4 +12,5 @@ LL |     let a;
 
 error: aborting due to 2 previous errors
 
-For more information about this error, try `rustc --explain E0282`.
+Some errors have detailed explanations: E0282, E0661.
+For more information about an error, try `rustc --explain E0282`.
diff --git a/src/test/ui/error-codes/E0662.stderr b/src/test/ui/error-codes/E0662.stderr
index 3b2f7632f39..7480f03c3d4 100644
--- a/src/test/ui/error-codes/E0662.stderr
+++ b/src/test/ui/error-codes/E0662.stderr
@@ -6,3 +6,4 @@ LL |          : "=test"("a")
 
 error: aborting due to previous error
 
+For more information about this error, try `rustc --explain E0662`.
diff --git a/src/test/ui/error-codes/E0663.stderr b/src/test/ui/error-codes/E0663.stderr
index 4ac0a85f26d..2b7598d1577 100644
--- a/src/test/ui/error-codes/E0663.stderr
+++ b/src/test/ui/error-codes/E0663.stderr
@@ -6,3 +6,4 @@ LL |          : "+test"("a")
 
 error: aborting due to previous error
 
+For more information about this error, try `rustc --explain E0663`.
diff --git a/src/test/ui/error-codes/E0664.stderr b/src/test/ui/error-codes/E0664.stderr
index 435e465920b..224fc63696a 100644
--- a/src/test/ui/error-codes/E0664.stderr
+++ b/src/test/ui/error-codes/E0664.stderr
@@ -6,3 +6,4 @@ LL |          : "{eax}"
 
 error: aborting due to previous error
 
+For more information about this error, try `rustc --explain E0664`.
diff --git a/src/test/ui/error-codes/E0665.stderr b/src/test/ui/error-codes/E0665.stderr
index 84fe3c01394..2c2b498e39a 100644
--- a/src/test/ui/error-codes/E0665.stderr
+++ b/src/test/ui/error-codes/E0665.stderr
@@ -6,3 +6,4 @@ LL | #[derive(Default)]
 
 error: aborting due to previous error
 
+For more information about this error, try `rustc --explain E0665`.
diff --git a/src/test/ui/explain.stdout b/src/test/ui/explain.stdout
index 9ea56271f59..391ac68041e 100644
--- a/src/test/ui/explain.stdout
+++ b/src/test/ui/explain.stdout
@@ -1,4 +1,4 @@
-Per [RFC 401][rfc401], if you have a function declaration `foo`:
+er [RFC 401][rfc401], if you have a function declaration `foo`:
 
 ```
 // For the purposes of this explanation, all of these
diff --git a/src/test/ui/inline-asm-bad-constraint.stderr b/src/test/ui/inline-asm-bad-constraint.stderr
index 37e71a94c16..59066e5e7fc 100644
--- a/src/test/ui/inline-asm-bad-constraint.stderr
+++ b/src/test/ui/inline-asm-bad-constraint.stderr
@@ -18,3 +18,4 @@ LL |         asm!("addb $1, $0" : "={rax}"((0i32, rax)));
 
 error: aborting due to 3 previous errors
 
+For more information about this error, try `rustc --explain E0668`.
diff --git a/src/test/ui/inline-asm-bad-operand.stderr b/src/test/ui/inline-asm-bad-operand.stderr
index 55523bad6c5..b8e7e9acfec 100644
--- a/src/test/ui/inline-asm-bad-operand.stderr
+++ b/src/test/ui/inline-asm-bad-operand.stderr
@@ -42,3 +42,4 @@ LL | ...                   "r"("hello e0669"));
 
 error: aborting due to 7 previous errors
 
+For more information about this error, try `rustc --explain E0669`.
diff --git a/src/test/ui/issues/issue-37433.stderr b/src/test/ui/issues/issue-37433.stderr
index eec04469025..956694fc2cd 100644
--- a/src/test/ui/issues/issue-37433.stderr
+++ b/src/test/ui/issues/issue-37433.stderr
@@ -6,3 +6,4 @@ LL |         asm!("" :: "r"(""));
 
 error: aborting due to previous error
 
+For more information about this error, try `rustc --explain E0669`.
diff --git a/src/test/ui/issues/issue-53787-inline-assembler-macro.stderr b/src/test/ui/issues/issue-53787-inline-assembler-macro.stderr
index 6a4416d78f3..f96bcaa492c 100644
--- a/src/test/ui/issues/issue-53787-inline-assembler-macro.stderr
+++ b/src/test/ui/issues/issue-53787-inline-assembler-macro.stderr
@@ -6,3 +6,4 @@ LL |     fake_jump!("FirstFunc");
 
 error: aborting due to previous error
 
+For more information about this error, try `rustc --explain E0669`.
diff --git a/src/test/ui/json-bom-plus-crlf-multifile.stderr b/src/test/ui/json-bom-plus-crlf-multifile.stderr
index 8472f161089..39f6b69bbec 100644
--- a/src/test/ui/json-bom-plus-crlf-multifile.stderr
+++ b/src/test/ui/json-bom-plus-crlf-multifile.stderr
@@ -1,5 +1,4 @@
-{"message":"mismatched types","code":{"code":"E0308","explanation":"
-This error occurs when the compiler was unable to infer the concrete type of a
+{"message":"mismatched types","code":{"code":"E0308","explanation":"This error occurs when the compiler was unable to infer the concrete type of a
 variable. It can occur for several cases, the most common of which is a
 mismatch in the expected type that the compiler inferred for a variable's
 initializing expression, and the actual type explicitly assigned to the
@@ -19,8 +18,7 @@ let x: i32 = \"I am not a number!\";
 "},"level":"error","spans":[{"file_name":"$DIR/json-bom-plus-crlf-multifile-aux.rs","byte_start":621,"byte_end":622,"line_start":17,"line_end":17,"column_start":22,"column_end":23,"is_primary":true,"text":[{"text":"    let s : String = 1;  // Error in the middle of line.","highlight_start":22,"highlight_end":23}],"label":"expected struct `std::string::String`, found integer","suggested_replacement":null,"suggestion_applicability":null,"expansion":null}],"children":[{"message":"expected type `std::string::String`
    found type `{integer}`","code":null,"level":"note","spans":[],"children":[],"rendered":null},{"message":"try using a conversion method","code":null,"level":"help","spans":[{"file_name":"$DIR/json-bom-plus-crlf-multifile-aux.rs","byte_start":621,"byte_end":622,"line_start":17,"line_end":17,"column_start":22,"column_end":23,"is_primary":true,"text":[{"text":"    let s : String = 1;  // Error in the middle of line.","highlight_start":22,"highlight_end":23}],"label":null,"suggested_replacement":"1.to_string()","suggestion_applicability":"MaybeIncorrect","expansion":null}],"children":[],"rendered":null}],"rendered":"$DIR/json-bom-plus-crlf-multifile-aux.rs:17:22: error[E0308]: mismatched types
 "}
-{"message":"mismatched types","code":{"code":"E0308","explanation":"
-This error occurs when the compiler was unable to infer the concrete type of a
+{"message":"mismatched types","code":{"code":"E0308","explanation":"This error occurs when the compiler was unable to infer the concrete type of a
 variable. It can occur for several cases, the most common of which is a
 mismatch in the expected type that the compiler inferred for a variable's
 initializing expression, and the actual type explicitly assigned to the
@@ -40,8 +38,7 @@ let x: i32 = \"I am not a number!\";
 "},"level":"error","spans":[{"file_name":"$DIR/json-bom-plus-crlf-multifile-aux.rs","byte_start":681,"byte_end":682,"line_start":19,"line_end":19,"column_start":22,"column_end":23,"is_primary":true,"text":[{"text":"    let s : String = 1","highlight_start":22,"highlight_end":23}],"label":"expected struct `std::string::String`, found integer","suggested_replacement":null,"suggestion_applicability":null,"expansion":null}],"children":[{"message":"expected type `std::string::String`
    found type `{integer}`","code":null,"level":"note","spans":[],"children":[],"rendered":null},{"message":"try using a conversion method","code":null,"level":"help","spans":[{"file_name":"$DIR/json-bom-plus-crlf-multifile-aux.rs","byte_start":681,"byte_end":682,"line_start":19,"line_end":19,"column_start":22,"column_end":23,"is_primary":true,"text":[{"text":"    let s : String = 1","highlight_start":22,"highlight_end":23}],"label":null,"suggested_replacement":"1.to_string()","suggestion_applicability":"MaybeIncorrect","expansion":null}],"children":[],"rendered":null}],"rendered":"$DIR/json-bom-plus-crlf-multifile-aux.rs:19:22: error[E0308]: mismatched types
 "}
-{"message":"mismatched types","code":{"code":"E0308","explanation":"
-This error occurs when the compiler was unable to infer the concrete type of a
+{"message":"mismatched types","code":{"code":"E0308","explanation":"This error occurs when the compiler was unable to infer the concrete type of a
 variable. It can occur for several cases, the most common of which is a
 mismatch in the expected type that the compiler inferred for a variable's
 initializing expression, and the actual type explicitly assigned to the
@@ -61,8 +58,7 @@ let x: i32 = \"I am not a number!\";
 "},"level":"error","spans":[{"file_name":"$DIR/json-bom-plus-crlf-multifile-aux.rs","byte_start":745,"byte_end":746,"line_start":23,"line_end":23,"column_start":1,"column_end":2,"is_primary":true,"text":[{"text":"1;  // Error after the newline.","highlight_start":1,"highlight_end":2}],"label":"expected struct `std::string::String`, found integer","suggested_replacement":null,"suggestion_applicability":null,"expansion":null}],"children":[{"message":"expected type `std::string::String`
    found type `{integer}`","code":null,"level":"note","spans":[],"children":[],"rendered":null},{"message":"try using a conversion method","code":null,"level":"help","spans":[{"file_name":"$DIR/json-bom-plus-crlf-multifile-aux.rs","byte_start":745,"byte_end":746,"line_start":23,"line_end":23,"column_start":1,"column_end":2,"is_primary":true,"text":[{"text":"1;  // Error after the newline.","highlight_start":1,"highlight_end":2}],"label":null,"suggested_replacement":"1.to_string()","suggestion_applicability":"MaybeIncorrect","expansion":null}],"children":[],"rendered":null}],"rendered":"$DIR/json-bom-plus-crlf-multifile-aux.rs:23:1: error[E0308]: mismatched types
 "}
-{"message":"mismatched types","code":{"code":"E0308","explanation":"
-This error occurs when the compiler was unable to infer the concrete type of a
+{"message":"mismatched types","code":{"code":"E0308","explanation":"This error occurs when the compiler was unable to infer the concrete type of a
 variable. It can occur for several cases, the most common of which is a
 mismatch in the expected type that the compiler inferred for a variable's
 initializing expression, and the actual type explicitly assigned to the
diff --git a/src/test/ui/json-bom-plus-crlf.stderr b/src/test/ui/json-bom-plus-crlf.stderr
index 17775f59fd1..d62140e4de7 100644
--- a/src/test/ui/json-bom-plus-crlf.stderr
+++ b/src/test/ui/json-bom-plus-crlf.stderr
@@ -1,5 +1,4 @@
-{"message":"mismatched types","code":{"code":"E0308","explanation":"
-This error occurs when the compiler was unable to infer the concrete type of a
+{"message":"mismatched types","code":{"code":"E0308","explanation":"This error occurs when the compiler was unable to infer the concrete type of a
 variable. It can occur for several cases, the most common of which is a
 mismatch in the expected type that the compiler inferred for a variable's
 initializing expression, and the actual type explicitly assigned to the
@@ -19,8 +18,7 @@ let x: i32 = \"I am not a number!\";
 "},"level":"error","spans":[{"file_name":"$DIR/json-bom-plus-crlf.rs","byte_start":621,"byte_end":622,"line_start":17,"line_end":17,"column_start":22,"column_end":23,"is_primary":true,"text":[{"text":"    let s : String = 1;  // Error in the middle of line.","highlight_start":22,"highlight_end":23}],"label":"expected struct `std::string::String`, found integer","suggested_replacement":null,"suggestion_applicability":null,"expansion":null}],"children":[{"message":"expected type `std::string::String`
    found type `{integer}`","code":null,"level":"note","spans":[],"children":[],"rendered":null},{"message":"try using a conversion method","code":null,"level":"help","spans":[{"file_name":"$DIR/json-bom-plus-crlf.rs","byte_start":621,"byte_end":622,"line_start":17,"line_end":17,"column_start":22,"column_end":23,"is_primary":true,"text":[{"text":"    let s : String = 1;  // Error in the middle of line.","highlight_start":22,"highlight_end":23}],"label":null,"suggested_replacement":"1.to_string()","suggestion_applicability":"MaybeIncorrect","expansion":null}],"children":[],"rendered":null}],"rendered":"$DIR/json-bom-plus-crlf.rs:17:22: error[E0308]: mismatched types
 "}
-{"message":"mismatched types","code":{"code":"E0308","explanation":"
-This error occurs when the compiler was unable to infer the concrete type of a
+{"message":"mismatched types","code":{"code":"E0308","explanation":"This error occurs when the compiler was unable to infer the concrete type of a
 variable. It can occur for several cases, the most common of which is a
 mismatch in the expected type that the compiler inferred for a variable's
 initializing expression, and the actual type explicitly assigned to the
@@ -40,8 +38,7 @@ let x: i32 = \"I am not a number!\";
 "},"level":"error","spans":[{"file_name":"$DIR/json-bom-plus-crlf.rs","byte_start":681,"byte_end":682,"line_start":19,"line_end":19,"column_start":22,"column_end":23,"is_primary":true,"text":[{"text":"    let s : String = 1","highlight_start":22,"highlight_end":23}],"label":"expected struct `std::string::String`, found integer","suggested_replacement":null,"suggestion_applicability":null,"expansion":null}],"children":[{"message":"expected type `std::string::String`
    found type `{integer}`","code":null,"level":"note","spans":[],"children":[],"rendered":null},{"message":"try using a conversion method","code":null,"level":"help","spans":[{"file_name":"$DIR/json-bom-plus-crlf.rs","byte_start":681,"byte_end":682,"line_start":19,"line_end":19,"column_start":22,"column_end":23,"is_primary":true,"text":[{"text":"    let s : String = 1","highlight_start":22,"highlight_end":23}],"label":null,"suggested_replacement":"1.to_string()","suggestion_applicability":"MaybeIncorrect","expansion":null}],"children":[],"rendered":null}],"rendered":"$DIR/json-bom-plus-crlf.rs:19:22: error[E0308]: mismatched types
 "}
-{"message":"mismatched types","code":{"code":"E0308","explanation":"
-This error occurs when the compiler was unable to infer the concrete type of a
+{"message":"mismatched types","code":{"code":"E0308","explanation":"This error occurs when the compiler was unable to infer the concrete type of a
 variable. It can occur for several cases, the most common of which is a
 mismatch in the expected type that the compiler inferred for a variable's
 initializing expression, and the actual type explicitly assigned to the
@@ -61,8 +58,7 @@ let x: i32 = \"I am not a number!\";
 "},"level":"error","spans":[{"file_name":"$DIR/json-bom-plus-crlf.rs","byte_start":745,"byte_end":746,"line_start":23,"line_end":23,"column_start":1,"column_end":2,"is_primary":true,"text":[{"text":"1;  // Error after the newline.","highlight_start":1,"highlight_end":2}],"label":"expected struct `std::string::String`, found integer","suggested_replacement":null,"suggestion_applicability":null,"expansion":null}],"children":[{"message":"expected type `std::string::String`
    found type `{integer}`","code":null,"level":"note","spans":[],"children":[],"rendered":null},{"message":"try using a conversion method","code":null,"level":"help","spans":[{"file_name":"$DIR/json-bom-plus-crlf.rs","byte_start":745,"byte_end":746,"line_start":23,"line_end":23,"column_start":1,"column_end":2,"is_primary":true,"text":[{"text":"1;  // Error after the newline.","highlight_start":1,"highlight_end":2}],"label":null,"suggested_replacement":"1.to_string()","suggestion_applicability":"MaybeIncorrect","expansion":null}],"children":[],"rendered":null}],"rendered":"$DIR/json-bom-plus-crlf.rs:23:1: error[E0308]: mismatched types
 "}
-{"message":"mismatched types","code":{"code":"E0308","explanation":"
-This error occurs when the compiler was unable to infer the concrete type of a
+{"message":"mismatched types","code":{"code":"E0308","explanation":"This error occurs when the compiler was unable to infer the concrete type of a
 variable. It can occur for several cases, the most common of which is a
 mismatch in the expected type that the compiler inferred for a variable's
 initializing expression, and the actual type explicitly assigned to the
diff --git a/src/test/ui/json-short.stderr b/src/test/ui/json-short.stderr
index d9f68023ce7..83fc83778a8 100644
--- a/src/test/ui/json-short.stderr
+++ b/src/test/ui/json-short.stderr
@@ -1,5 +1,4 @@
-{"message":"`main` function not found in crate `json_short`","code":{"code":"E0601","explanation":"
-No `main` function was found in a binary crate. To fix this error, add a
+{"message":"`main` function not found in crate `json_short`","code":{"code":"E0601","explanation":"No `main` function was found in a binary crate. To fix this error, add a
 `main` function. For example:
 
 ```
diff --git a/src/test/ui/lint/use_suggestion_json.stderr b/src/test/ui/lint/use_suggestion_json.stderr
index 3e77d193fa4..0dc0d247af5 100644
--- a/src/test/ui/lint/use_suggestion_json.stderr
+++ b/src/test/ui/lint/use_suggestion_json.stderr
@@ -2,8 +2,7 @@
   "message": "cannot find type `Iter` in this scope",
   "code": {
     "code": "E0412",
-    "explanation": "
-The type name used is not in scope.
+    "explanation": "The type name used is not in scope.
 
 Erroneous code examples:
 
diff --git a/src/test/ui/macros/macros-nonfatal-errors.stderr b/src/test/ui/macros/macros-nonfatal-errors.stderr
index b2fdbb736c8..d29e6b4d46f 100644
--- a/src/test/ui/macros/macros-nonfatal-errors.stderr
+++ b/src/test/ui/macros/macros-nonfatal-errors.stderr
@@ -89,3 +89,4 @@ LL |     trace_macros!(invalid);
 
 error: aborting due to 14 previous errors
 
+For more information about this error, try `rustc --explain E0665`.
diff --git a/src/test/ui/non-integer-atomic.stderr b/src/test/ui/non-integer-atomic.stderr
index b3cf788d834..2a06b617aec 100644
--- a/src/test/ui/non-integer-atomic.stderr
+++ b/src/test/ui/non-integer-atomic.stderr
@@ -96,3 +96,4 @@ LL |     intrinsics::atomic_cxchg(p, v, v);
 
 error: aborting due to 16 previous errors
 
+For more information about this error, try `rustc --explain E0511`.
diff --git a/src/test/ui/simd-intrinsic/simd-intrinsic-generic-arithmetic-saturating.stderr b/src/test/ui/simd-intrinsic/simd-intrinsic-generic-arithmetic-saturating.stderr
index e10ac2e1192..0e88540bcc8 100644
--- a/src/test/ui/simd-intrinsic/simd-intrinsic-generic-arithmetic-saturating.stderr
+++ b/src/test/ui/simd-intrinsic/simd-intrinsic-generic-arithmetic-saturating.stderr
@@ -12,3 +12,4 @@ LL |         simd_saturating_sub(z, z);
 
 error: aborting due to 2 previous errors
 
+For more information about this error, try `rustc --explain E0511`.
diff --git a/src/test/ui/simd-intrinsic/simd-intrinsic-generic-arithmetic.stderr b/src/test/ui/simd-intrinsic/simd-intrinsic-generic-arithmetic.stderr
index 014db52504f..27493950af0 100644
--- a/src/test/ui/simd-intrinsic/simd-intrinsic-generic-arithmetic.stderr
+++ b/src/test/ui/simd-intrinsic/simd-intrinsic-generic-arithmetic.stderr
@@ -84,3 +84,4 @@ LL |         simd_xor(z, z);
 
 error: aborting due to 14 previous errors
 
+For more information about this error, try `rustc --explain E0511`.
diff --git a/src/test/ui/simd-intrinsic/simd-intrinsic-generic-bitmask.stderr b/src/test/ui/simd-intrinsic/simd-intrinsic-generic-bitmask.stderr
index f9135d1cbfe..d016838d098 100644
--- a/src/test/ui/simd-intrinsic/simd-intrinsic-generic-bitmask.stderr
+++ b/src/test/ui/simd-intrinsic/simd-intrinsic-generic-bitmask.stderr
@@ -30,3 +30,4 @@ LL |         let _: u128 = simd_bitmask(m64);
 
 error: aborting due to 5 previous errors
 
+For more information about this error, try `rustc --explain E0511`.
diff --git a/src/test/ui/simd-intrinsic/simd-intrinsic-generic-cast.stderr b/src/test/ui/simd-intrinsic/simd-intrinsic-generic-cast.stderr
index 333f92a40a8..6e33e3b30f5 100644
--- a/src/test/ui/simd-intrinsic/simd-intrinsic-generic-cast.stderr
+++ b/src/test/ui/simd-intrinsic/simd-intrinsic-generic-cast.stderr
@@ -24,3 +24,4 @@ LL |         simd_cast::<_, i32x8>(x);
 
 error: aborting due to 4 previous errors
 
+For more information about this error, try `rustc --explain E0511`.
diff --git a/src/test/ui/simd-intrinsic/simd-intrinsic-generic-comparison.stderr b/src/test/ui/simd-intrinsic/simd-intrinsic-generic-comparison.stderr
index cea319f1bc8..d8da2e5ee57 100644
--- a/src/test/ui/simd-intrinsic/simd-intrinsic-generic-comparison.stderr
+++ b/src/test/ui/simd-intrinsic/simd-intrinsic-generic-comparison.stderr
@@ -108,3 +108,4 @@ LL |         simd_ge::<_, i16x8>(x, x);
 
 error: aborting due to 18 previous errors
 
+For more information about this error, try `rustc --explain E0511`.
diff --git a/src/test/ui/simd-intrinsic/simd-intrinsic-generic-elements.stderr b/src/test/ui/simd-intrinsic/simd-intrinsic-generic-elements.stderr
index 3a84567b53a..2f8ffb6035e 100644
--- a/src/test/ui/simd-intrinsic/simd-intrinsic-generic-elements.stderr
+++ b/src/test/ui/simd-intrinsic/simd-intrinsic-generic-elements.stderr
@@ -90,3 +90,4 @@ LL |         simd_shuffle8::<_, i32x2>(x, x, [0; 8]);
 
 error: aborting due to 15 previous errors
 
+For more information about this error, try `rustc --explain E0511`.
diff --git a/src/test/ui/simd-intrinsic/simd-intrinsic-generic-reduction.stderr b/src/test/ui/simd-intrinsic/simd-intrinsic-generic-reduction.stderr
index 3863eeac3f3..5f2a67dc14e 100644
--- a/src/test/ui/simd-intrinsic/simd-intrinsic-generic-reduction.stderr
+++ b/src/test/ui/simd-intrinsic/simd-intrinsic-generic-reduction.stderr
@@ -60,3 +60,4 @@ LL |         let _: bool = simd_reduce_any(z);
 
 error: aborting due to 10 previous errors
 
+For more information about this error, try `rustc --explain E0511`.
diff --git a/src/test/ui/simd-intrinsic/simd-intrinsic-generic-select.stderr b/src/test/ui/simd-intrinsic/simd-intrinsic-generic-select.stderr
index e03e396fdf4..a46352c7308 100644
--- a/src/test/ui/simd-intrinsic/simd-intrinsic-generic-select.stderr
+++ b/src/test/ui/simd-intrinsic/simd-intrinsic-generic-select.stderr
@@ -48,3 +48,4 @@ LL |         simd_select_bitmask("x", x, x);
 
 error: aborting due to 8 previous errors
 
+For more information about this error, try `rustc --explain E0511`.