Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 21 insertions, 0 deletions

diff --git a/compiler/rustc_error_codes/src/error_codes/E0136.md b/compiler/rustc_error_codes/src/error_codes/E0136.md
new file mode 100644
index 000000000..15cf09a18
--- /dev/null
+++ b/compiler/rustc_error_codes/src/error_codes/E0136.md
@@ -0,0 +1,21 @@
+#### Note: this error code is no longer emitted by the compiler.
+
+More than one `main` function was found.
+
+Erroneous code example:
+
+```compile_fail
+fn main() {
+    // ...
+}
+
+// ...
+
+fn main() { // error!
+    // ...
+}
+```
+
+A binary can only have one entry point, and by default that entry point is the
+`main()` function. If there are multiple instances of this function, please
+rename one of them.