Fix review comments

Author: bjorn3

cargo-miri/src/setup.rs

@@ -160,7 +160,7 @@ pub fn setup(
 
     // Do the build.
     let status = SysrootBuilder::new(&sysroot_dir, target)
-        .build_mode(BuildMode::Build)
+        .build_mode(BuildMode::Build) // not a real build, since we use dummy codegen
         .rustc_version(rustc_version.clone())
         .sysroot_config(sysroot_config)
         .rustflags(rustflags)

src/bin/miri.rs

@@ -239,7 +239,7 @@ impl rustc_driver::Callbacks for MiriBeRustCompilerCalls {
             // which will be used later in non-`MIRI_BE_RUSTC` mode.
             config.override_queries = Some(|_, local_providers| {
                 // We need to add #[used] symbols to exported_symbols for `lookup_link_section`.
-                // FIXME handle this somehow in rustc itself to avoid this hack
+                // FIXME handle this somehow in rustc itself to avoid this hack.
                 local_providers.exported_non_generic_symbols = |tcx, LocalCrate| {
                     let reachable_set = tcx.with_stable_hashing_context(|hcx| {
                         tcx.reachable_set(()).to_sorted(&hcx, true)

test-cargo-miri/Cargo.lock

@@ -1,5 +1,5 @@
 [workspace]
-members = ["cdylib", "subcrate", "issue-1567", "exported-symbol-dep", "test-local-crate-detection"]
+members = ["subcrate", "issue-1567", "exported-symbol-dep", "test-local-crate-detection"]
 exclude = ["no-std-smoke"] # it wants to be panic="abort"
 
 [package]