Auto merge of #1490 - RalfJung:rustup, r=RalfJung

rustup for new folder layout

Fixes the fallout from rust-lang/rust#73265.

Blocked on a xargo release with japaric/xargo#301.

cargo-miri/bin.rs

@@ -10,7 +10,7 @@ use std::process::Command;
 
 use rustc_version::VersionMeta;
 
-const XARGO_MIN_VERSION: (u32, u32, u32) = (0, 3, 21);
+const XARGO_MIN_VERSION: (u32, u32, u32) = (0, 3, 22);
 
 const CARGO_MIRI_HELP: &str = r#"Interprets bin crates and tests in Miri
 
@@ -271,10 +271,10 @@ fn setup(subcommand: MiriCommand) {
                 .stdout;
             let sysroot = std::str::from_utf8(&sysroot).unwrap();
             let sysroot = Path::new(sysroot.trim_end_matches('\n'));
-            // Check for `$SYSROOT/lib/rustlib/src/rust/src`; test if that contains `libstd/lib.rs`.
+            // Check for `$SYSROOT/lib/rustlib/src/rust/library`; test if that contains `std/Cargo.toml`.
             let rustup_src =
-                sysroot.join("lib").join("rustlib").join("src").join("rust").join("src");
-            if !rustup_src.join("libstd").join("lib.rs").exists() {
+                sysroot.join("lib").join("rustlib").join("src").join("rust").join("library");
+            if !rustup_src.join("std").join("Cargo.toml").exists() {
                 // Ask the user to install the `rust-src` component, and use that.
                 let mut cmd = Command::new("rustup");
                 cmd.args(&["component", "add", "rust-src"]);

rust-version

@@ -1 +1 @@
-efc02b03d18b0cbaa55b1e421d792f70a39230b2
+1454bbd4fdac9b7272b93fe82860613dccc0afad

tests/run-pass/panic/catch_panic.rs

@@ -1,4 +1,4 @@
-// normalize-stderr-test "[^ ]*libcore/[a-z_/]+.rs[0-9:]*" -> "$$LOC"
+// normalize-stderr-test "[^ ]*core/[a-z_/]+.rs[0-9:]*" -> "$$LOC"
 #![feature(never_type)]
 #![allow(unconditional_panic)]