Auto merge of #30325 - jseyfried:fixes_30078, r=nrc

This fixes a bug in which unused imports can get wrongly marked as used when checking for unused qualifications in `resolve_path` (issue #30078), and it removes unused imports that were previously undetected because of the bug.

3 files changed, 1 insertions, 3 deletions

diff --git a/src/libstd/collections/hash/map.rs b/src/libstd/collections/hash/map.rs
index 38c080febf1..9ab440f289e 100644
--- a/src/libstd/collections/hash/map.rs
+++ b/src/libstd/collections/hash/map.rs
@@ -24,7 +24,6 @@ use mem::{self, replace};
 use ops::{Deref, FnMut, FnOnce, Index};
 use option::Option::{self, Some, None};
 use rand::{self, Rng};
-use result::Result;
 
 use super::table::{
     self,
diff --git a/src/libstd/collections/hash/set.rs b/src/libstd/collections/hash/set.rs
index 08f356463bc..761709d41e7 100644
--- a/src/libstd/collections/hash/set.rs
+++ b/src/libstd/collections/hash/set.rs
@@ -13,7 +13,6 @@ use clone::Clone;
 use cmp::{Eq, PartialEq};
 use core::marker::Sized;
 use default::Default;
-use fmt::Debug;
 use fmt;
 use hash::Hash;
 use iter::{Iterator, IntoIterator, ExactSizeIterator, FromIterator, Map, Chain, Extend};
diff --git a/src/libstd/sys/unix/fs.rs b/src/libstd/sys/unix/fs.rs
index 8ea8f0c6c77..9ac11b442da 100644
--- a/src/libstd/sys/unix/fs.rs
+++ b/src/libstd/sys/unix/fs.rs
@@ -14,7 +14,7 @@ use os::unix::prelude::*;
 use ffi::{CString, CStr, OsString, OsStr};
 use fmt;
 use io::{self, Error, ErrorKind, SeekFrom};
-use libc::{self, c_int, size_t, off_t, c_char, mode_t};
+use libc::{self, c_int, off_t, c_char, mode_t};
 use mem;
 use path::{Path, PathBuf};
 use ptr;