Auto merge of #107928 - matthiaskrgr:rollup-qnn380r, r=matthiaskrgr

Rollup of 7 pull requests

Successful merges:

 - #107657 (Add only modified subcommand for compiletest)
 - #107864 (rustdoc: clean up `write!` calls with less stuttering)
 - #107873 (Emit JSON output for the building of bootstrap itself)
 - #107895 (remove redundant clones)
 - #107897 (Reexported macros docs)
 - #107909 (rustdoc: remove redundant `if s.is_empty()` from `find_testable_code`)
 - #107912 (rustdoc: Don't resolve link to field on different variant)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors

Cargo.lock

@@ -895,6 +895,7 @@ dependencies = [
 name = "compiletest"
 version = "0.0.0"
 dependencies = [
+ "build_helper",
  "colored",
  "diff",
  "getopts",

compiler/rustc_codegen_ssa/src/back/archive.rs

@@ -203,7 +203,7 @@ impl<'a> ArchiveBuilder<'a> for ArArchiveBuilder<'a> {
             }
         }
 
-        self.src_archives.push((archive_path.to_owned(), archive_map));
+        self.src_archives.push((archive_path, archive_map));
         Ok(())
     }
 

compiler/rustc_log/src/lib.rs

@@ -92,7 +92,7 @@ pub fn init_env_logger(env: &str) -> Result<(), Error> {
             let fmt_layer = tracing_subscriber::fmt::layer()
                 .with_writer(io::stderr)
                 .without_time()
-                .event_format(BacktraceFormatter { backtrace_target: str.to_string() });
+                .event_format(BacktraceFormatter { backtrace_target: str });
             let subscriber = subscriber.with(fmt_layer);
             tracing::subscriber::set_global_default(subscriber).unwrap();
         }

compiler/rustc_parse_format/src/lib.rs

@@ -847,9 +847,7 @@ impl<'a> Parser<'a> {
                 0,
                 ParseError {
                     description: "expected format parameter to occur after `:`".to_owned(),
-                    note: Some(
-                        format!("`?` comes after `:`, try `{}:{}` instead", word, "?").to_owned(),
-                    ),
+                    note: Some(format!("`?` comes after `:`, try `{}:{}` instead", word, "?")),
                     label: "expected `?` to occur after `:`".to_owned(),
                     span: pos.to(pos),
                     secondary_label: None,

src/bootstrap/bootstrap.py

@@ -784,6 +784,8 @@ def build_bootstrap(self, color, verbose_count):
         if self.get_toml("metrics", "build"):
             args.append("--features")
             args.append("build-metrics")
+        if self.json_output:
+            args.append("--message-format=json")
         if color == "always":
             args.append("--color=always")
         elif color == "never":
@@ -841,6 +843,7 @@ def parse_args():
     parser.add_argument('--build')
     parser.add_argument('--color', choices=['always', 'never', 'auto'])
     parser.add_argument('--clean', action='store_true')
+    parser.add_argument('--json-output', action='store_true')
     parser.add_argument('-v', '--verbose', action='count', default=0)
 
     return parser.parse_known_args(sys.argv)[0]
@@ -852,6 +855,7 @@ def bootstrap(args):
     build.rust_root = os.path.abspath(os.path.join(__file__, '../../..'))
     build.verbose = args.verbose != 0
     build.clean = args.clean
+    build.json_output = args.json_output
 
     # Read from `--config`, then `RUST_BOOTSTRAP_CONFIG`, then `./config.toml`,
     # then `config.toml` in the root directory.

src/bootstrap/builder/tests.rs

@@ -557,6 +557,7 @@ mod dist {
             rustfix_coverage: false,
             pass: None,
             run: None,
+            only_modified: false,
         };
 
         let build = Build::new(config);
@@ -627,6 +628,7 @@ mod dist {
             rustfix_coverage: false,
             pass: None,
             run: None,
+            only_modified: false,
         };
         // Make sure rustfmt binary not being found isn't an error.
         config.channel = "beta".to_string();

src/bootstrap/flags.rs

@@ -124,6 +124,7 @@ pub enum Subcommand {
         fail_fast: bool,
         doc_tests: DocTests,
         rustfix_coverage: bool,
+        only_modified: bool,
     },
     Bench {
         paths: Vec<PathBuf>,
@@ -301,6 +302,7 @@ To learn more about a subcommand, run `./x.py <subcommand> -h`",
                 opts.optflag("", "doc", "only run doc tests");
                 opts.optflag("", "bless", "update all stderr/stdout files of failing ui tests");
                 opts.optflag("", "force-rerun", "rerun tests even if the inputs are unchanged");
+                opts.optflag("", "only-modified", "only run tests that result has been changed");
                 opts.optopt(
                     "",
                     "compare-mode",
@@ -598,6 +600,7 @@ Arguments:
                 rustc_args: matches.opt_strs("rustc-args"),
                 fail_fast: !matches.opt_present("no-fail-fast"),
                 rustfix_coverage: matches.opt_present("rustfix-coverage"),
+                only_modified: matches.opt_present("only-modified"),
                 doc_tests: if matches.opt_present("doc") {
                     DocTests::Only
                 } else if matches.opt_present("no-doc") {
@@ -777,6 +780,13 @@ impl Subcommand {
         }
     }
 
+    pub fn only_modified(&self) -> bool {
+        match *self {
+            Subcommand::Test { only_modified, .. } => only_modified,
+            _ => false,
+        }
+    }
+
     pub fn force_rerun(&self) -> bool {
         match *self {
             Subcommand::Test { force_rerun, .. } => force_rerun,

src/bootstrap/format.rs

@@ -1,8 +1,8 @@
 //! Runs rustfmt on the repository.
 
 use crate::builder::Builder;
-use crate::util::{output, output_result, program_out_of_date, t};
-use build_helper::git::updated_master_branch;
+use crate::util::{output, program_out_of_date, t};
+use build_helper::git::get_git_modified_files;
 use ignore::WalkBuilder;
 use std::collections::VecDeque;
 use std::path::{Path, PathBuf};
@@ -80,23 +80,11 @@ fn update_rustfmt_version(build: &Builder<'_>) {
 ///
 /// Returns `None` if all files should be formatted.
 fn get_modified_rs_files(build: &Builder<'_>) -> Result<Option<Vec<String>>, String> {
-    let Ok(updated_master) = updated_master_branch(Some(&build.config.src)) else { return Ok(None); };
-
     if !verify_rustfmt_version(build) {
         return Ok(None);
     }
 
-    let merge_base =
-        output_result(build.config.git().arg("merge-base").arg(&updated_master).arg("HEAD"))?;
-    Ok(Some(
-        output_result(
-            build.config.git().arg("diff-index").arg("--name-only").arg(merge_base.trim()),
-        )?
-        .lines()
-        .map(|s| s.trim().to_owned())
-        .filter(|f| Path::new(f).extension().map_or(false, |ext| ext == "rs"))
-        .collect(),
-    ))
+    get_git_modified_files(Some(&build.config.src), &vec!["rs"])
 }
 
 #[derive(serde::Deserialize)]

src/bootstrap/test.rs

@@ -1510,6 +1510,10 @@ note: if you're sure you want to do this, please open an issue as to why. In the
         if builder.config.rust_optimize_tests {
             cmd.arg("--optimize-tests");
         }
+        if builder.config.cmd.only_modified() {
+            cmd.arg("--only-modified");
+        }
+
         let mut flags = if is_rustdoc { Vec::new() } else { vec!["-Crpath".to_string()] };
         flags.push(format!("-Cdebuginfo={}", builder.config.rust_debuginfo_level_tests));
         flags.extend(builder.config.cmd.rustc_args().iter().map(|s| s.to_string()));

src/librustdoc/clean/mod.rs

@@ -2209,10 +2209,12 @@ fn clean_maybe_renamed_item<'tcx>(
         };
 
         let mut extra_attrs = Vec::new();
-        if let Some(hir::Node::Item(use_node)) =
-            import_id.and_then(|def_id| cx.tcx.hir().find_by_def_id(def_id))
+        if let Some(import_id) = import_id &&
+            let Some(hir::Node::Item(use_node)) = cx.tcx.hir().find_by_def_id(import_id)
         {
-            // We get all the various imports' attributes.
+            // First, we add the attributes from the current import.
+            extra_attrs.extend_from_slice(inline::load_attrs(cx, import_id.to_def_id()));
+            // Then we get all the various imports' attributes.
             get_all_import_attributes(use_node, cx.tcx, item.owner_id.def_id, &mut extra_attrs);
         }