rhg: fix race when a fixup file is deleted on disk

See next changeset for the other race in the same kind of logic and why
there are two different places.

rust/rhg/src/commands/status.rs

@@ -436,9 +436,21 b' pub fn run(invocation: &crate::CliInvoca'
                     // `unsure_is_clean` which was needed before reading
                     // contents. Here we access metadata again after reading
                     // content, in case it changed in the meantime.
-                    let fs_metadata = repo
+                    let metadata_res = repo
                         .working_directory_vfs()
-                        .symlink_metadata(&fs_path)?;
+                        .symlink_metadata(&fs_path);
+                    let fs_metadata = match metadata_res {
+                        Ok(meta) => meta,
+                        Err(err) => match err {
+                            HgError::IoError { .. } => {
+                                // The file has probably been deleted. In any
+                                // case, it was in the dirstate before, so
+                                // let's ignore the error.
+                                continue;
+                            }
+                            _ => return Err(err.into()),
+                        },
+                    };
                     if let Some(mtime) =
                         TruncatedTimestamp::for_reliable_mtime_of(
                             &fs_metadata,

tests/test-dirstate-status-write-race.t

@@ -382,7 +382,6 b' The status process should return a consi'
   ? p
   ? q
   $ cat $TESTTMP/status-race-lock.log
-  abort: when reading $TESTTMP/race-with-update/dir2/k: $ENOENT$ (known-bad-output rhg !)
 
 final cleanup
 
@@ -479,7 +478,6 b' The status process should return a consi'
   ? p
   ? q
   $ cat $TESTTMP/status-race-lock.log
-  abort: when reading $TESTTMP/race-with-remove/dir2/l: $ENOENT$ (known-bad-output rhg !)
 
 final cleanup