diff --git a/clippy_lints/src/std_instead_of_core.rs b/clippy_lints/src/std_instead_of_core.rs
index cf839941123..c0e4f3c368a 100644
--- a/clippy_lints/src/std_instead_of_core.rs
+++ b/clippy_lints/src/std_instead_of_core.rs
@@ -109,7 +109,6 @@ fn check_path(&mut self, cx: &LateContext<'tcx>, path: &Path<'tcx>, _: HirId) {
                     sym::core => (STD_INSTEAD_OF_CORE, "std", "core"),
                     sym::alloc => (STD_INSTEAD_OF_ALLOC, "std", "alloc"),
                     _ => {
-                        self.prev_span = first_segment.ident.span;
                         return;
                     },
                 },
@@ -117,7 +116,6 @@ fn check_path(&mut self, cx: &LateContext<'tcx>, path: &Path<'tcx>, _: HirId) {
                     if cx.tcx.crate_name(def_id.krate) == sym::core {
                         (ALLOC_INSTEAD_OF_CORE, "alloc", "core")
                     } else {
-                        self.prev_span = first_segment.ident.span;
                         return;
                     }
                 },
diff --git a/tests/ui/std_instead_of_core.fixed b/tests/ui/std_instead_of_core.fixed
index e2454520240..db92f22c203 100644
--- a/tests/ui/std_instead_of_core.fixed
+++ b/tests/ui/std_instead_of_core.fixed
@@ -17,7 +17,7 @@ fn std_instead_of_core() {
     use ::core::hash::Hash;
     //~^ ERROR: used import from `std` instead of `core`
     // Don't lint on `env` macro
-    use std::env;
+    use core::env;
 
     // Multiple imports
     use core::fmt::{Debug, Result};
@@ -27,10 +27,14 @@ fn std_instead_of_core() {
     #[rustfmt::skip]
     use core::{
         //~^ ERROR: used import from `std` instead of `core`
-        fmt::Write,
+        fmt::Write as _,
         ptr::read_unaligned,
     };
 
+    // Multiline mixed imports
+    use core::{io::Write, fmt::Display};
+    //~^ ERROR: used import from `std` instead of `core`
+
     // Function calls
     let ptr = core::ptr::null::<u32>();
     //~^ ERROR: used import from `std` instead of `core`
diff --git a/tests/ui/std_instead_of_core.rs b/tests/ui/std_instead_of_core.rs
index 71bc5b7bb65..d1281ee0758 100644
--- a/tests/ui/std_instead_of_core.rs
+++ b/tests/ui/std_instead_of_core.rs
@@ -27,10 +27,14 @@ fn std_instead_of_core() {
     #[rustfmt::skip]
     use std::{
         //~^ ERROR: used import from `std` instead of `core`
-        fmt::Write,
+        fmt::Write as _,
         ptr::read_unaligned,
     };
 
+    // Multiline mixed imports
+    use std::{io::Write, fmt::Display};
+    //~^ ERROR: used import from `std` instead of `core`
+
     // Function calls
     let ptr = std::ptr::null::<u32>();
     //~^ ERROR: used import from `std` instead of `core`
diff --git a/tests/ui/std_instead_of_core.stderr b/tests/ui/std_instead_of_core.stderr
index 8f920511cc5..35bc6993b01 100644
--- a/tests/ui/std_instead_of_core.stderr
+++ b/tests/ui/std_instead_of_core.stderr
@@ -13,6 +13,12 @@ error: used import from `std` instead of `core`
 LL |     use ::std::hash::Hash;
    |           ^^^ help: consider importing the item from `core`: `core`
 
+error: used import from `std` instead of `core`
+  --> tests/ui/std_instead_of_core.rs:20:9
+   |
+LL |     use std::env;
+   |         ^^^ help: consider importing the item from `core`: `core`
+
 error: used import from `std` instead of `core`
   --> tests/ui/std_instead_of_core.rs:23:9
    |
@@ -26,37 +32,43 @@ LL |     use std::{
    |         ^^^ help: consider importing the item from `core`: `core`
 
 error: used import from `std` instead of `core`
-  --> tests/ui/std_instead_of_core.rs:35:15
+  --> tests/ui/std_instead_of_core.rs:35:9
+   |
+LL |     use std::{io::Write, fmt::Display};
+   |         ^^^ help: consider importing the item from `core`: `core`
+
+error: used import from `std` instead of `core`
+  --> tests/ui/std_instead_of_core.rs:39:15
    |
 LL |     let ptr = std::ptr::null::<u32>();
    |               ^^^ help: consider importing the item from `core`: `core`
 
 error: used import from `std` instead of `core`
-  --> tests/ui/std_instead_of_core.rs:37:21
+  --> tests/ui/std_instead_of_core.rs:41:21
    |
 LL |     let ptr_mut = ::std::ptr::null_mut::<usize>();
    |                     ^^^ help: consider importing the item from `core`: `core`
 
 error: used import from `std` instead of `core`
-  --> tests/ui/std_instead_of_core.rs:41:16
+  --> tests/ui/std_instead_of_core.rs:45:16
    |
 LL |     let cell = std::cell::Cell::new(8u32);
    |                ^^^ help: consider importing the item from `core`: `core`
 
 error: used import from `std` instead of `core`
-  --> tests/ui/std_instead_of_core.rs:43:27
+  --> tests/ui/std_instead_of_core.rs:47:27
    |
 LL |     let cell_absolute = ::std::cell::Cell::new(8u32);
    |                           ^^^ help: consider importing the item from `core`: `core`
 
 error: used import from `std` instead of `core`
-  --> tests/ui/std_instead_of_core.rs:52:9
+  --> tests/ui/std_instead_of_core.rs:56:9
    |
 LL |     use std::iter::Iterator;
    |         ^^^ help: consider importing the item from `core`: `core`
 
 error: used import from `std` instead of `alloc`
-  --> tests/ui/std_instead_of_core.rs:59:9
+  --> tests/ui/std_instead_of_core.rs:63:9
    |
 LL |     use std::vec;
    |         ^^^ help: consider importing the item from `alloc`: `alloc`
@@ -65,13 +77,13 @@ LL |     use std::vec;
    = help: to override `-D warnings` add `#[allow(clippy::std_instead_of_alloc)]`
 
 error: used import from `std` instead of `alloc`
-  --> tests/ui/std_instead_of_core.rs:61:9
+  --> tests/ui/std_instead_of_core.rs:65:9
    |
 LL |     use std::vec::Vec;
    |         ^^^ help: consider importing the item from `alloc`: `alloc`
 
 error: used import from `alloc` instead of `core`
-  --> tests/ui/std_instead_of_core.rs:67:9
+  --> tests/ui/std_instead_of_core.rs:71:9
    |
 LL |     use alloc::slice::from_ref;
    |         ^^^^^ help: consider importing the item from `core`: `core`
@@ -79,5 +91,5 @@ LL |     use alloc::slice::from_ref;
    = note: `-D clippy::alloc-instead-of-core` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::alloc_instead_of_core)]`
 
-error: aborting due to 12 previous errors
+error: aborting due to 14 previous errors