Revert "Rollup merge of rust-lang#129584 - lolbinarycat:old-upstream-warning, r=albertlarsan68"

This reverts commit 776187d, reversing
changes made to 7d01557.

Author: onur-ozkan

src/bootstrap/src/core/build_steps/format.rs

@@ -93,6 +93,7 @@ fn get_modified_rs_files(build: &Builder<'_>) -> Result<Option<Vec<String>>, Str
     if !verify_rustfmt_version(build) {
         return Ok(None);
     }
+
     get_git_modified_files(&build.config.git_config(), Some(&build.config.src), &["rs"])
 }
 

src/bootstrap/src/core/sanity.rs

@@ -13,8 +13,6 @@ use std::ffi::{OsStr, OsString};
 use std::path::PathBuf;
 use std::{env, fs};
 
-use build_helper::git::warn_old_master_branch;
-
 use crate::Build;
 #[cfg(not(feature = "bootstrap-self-test"))]
 use crate::builder::Builder;
@@ -382,14 +380,4 @@ $ pacman -R cmake && pacman -S mingw-w64-x86_64-cmake
     if let Some(ref s) = build.config.ccache {
         cmd_finder.must_have(s);
     }
-
-    // this warning is useless in CI,
-    // and CI probably won't have the right branches anyway.
-    if !build_helper::ci::CiEnv::is_ci() {
-        if let Err(e) = warn_old_master_branch(&build.config.git_config(), &build.config.src)
-            .map_err(|e| e.to_string())
-        {
-            eprintln!("unable to check if upstream branch is old: {e}");
-        }
-    }
 }

src/tools/build_helper/src/git.rs

@@ -196,37 +196,3 @@ pub fn get_git_untracked_files(
         .collect();
     Ok(Some(files))
 }
-
-/// Print a warning if the branch returned from `updated_master_branch` is old
-///
-/// For certain configurations of git repository, this remote will not be
-/// updated when running `git pull`.
-///
-/// This can result in formatting thousands of files instead of a dozen,
-/// so we should warn the user something is wrong.
-pub fn warn_old_master_branch(
-    config: &GitConfig<'_>,
-    git_dir: &Path,
-) -> Result<(), Box<dyn std::error::Error>> {
-    use std::time::Duration;
-    const WARN_AFTER: Duration = Duration::from_secs(60 * 60 * 24 * 10);
-    let updated_master = updated_master_branch(config, Some(git_dir))?;
-    let branch_path = git_dir.join(".git/refs/remotes").join(&updated_master);
-    match std::fs::metadata(branch_path) {
-        Ok(meta) => {
-            if meta.modified()?.elapsed()? > WARN_AFTER {
-                eprintln!("warning: {updated_master} has not been updated in 10 days");
-            } else {
-                return Ok(());
-            }
-        }
-        Err(err) => {
-            eprintln!("warning: unable to check if {updated_master} is old due to error: {err}")
-        }
-    }
-    eprintln!(
-        "warning: {updated_master} is used to determine if files have been modified\n\
-               warning: if it is not updated, this may cause files to be needlessly reformatted"
-    );
-    Ok(())
-}