diff --git a/src/librustdoc/html/sources.rs b/src/librustdoc/html/sources.rs
index 2e2bee78b95f9..7ab65bff3469f 100644
--- a/src/librustdoc/html/sources.rs
+++ b/src/librustdoc/html/sources.rs
@@ -274,7 +274,7 @@ pub(crate) fn print_src(
 ) {
     let lines = s.lines().count();
     let mut line_numbers = Buffer::empty_from(buf);
-    line_numbers.write_str("<pre class=\"line-numbers\">");
+    line_numbers.write_str("<pre class=\"src-line-numbers\">");
     match source_context {
         SourceContext::Standalone => {
             for line in 1..=lines {
diff --git a/src/librustdoc/html/static/css/rustdoc.css b/src/librustdoc/html/static/css/rustdoc.css
index 28dc4bf30108e..a8c044ab69bd9 100644
--- a/src/librustdoc/html/static/css/rustdoc.css
+++ b/src/librustdoc/html/static/css/rustdoc.css
@@ -578,7 +578,7 @@ h2.location a {
 	position: relative;
 }
 
-.example-wrap > pre.line-number {
+pre.example-line-numbers {
 	overflow: initial;
 	border: 1px solid;
 	padding: 13px 8px;
@@ -591,15 +591,15 @@ h2.location a {
 	text-decoration: underline;
 }
 
-.line-numbers {
+.src-line-numbers {
 	text-align: right;
 }
-.rustdoc:not(.source) .example-wrap > pre:not(.line-number) {
+.rustdoc:not(.source) .example-wrap > pre:not(.example-line-numbers) {
 	width: 100%;
 	overflow-x: auto;
 }
 
-.rustdoc:not(.source) .example-wrap > pre.line-numbers {
+.rustdoc:not(.source) .example-wrap > pre.src-line-numbers {
 	width: auto;
 	overflow-x: visible;
 }
@@ -612,14 +612,14 @@ h2.location a {
 	text-align: center;
 }
 
-.content > .example-wrap pre.line-numbers {
+.content > .example-wrap pre.src-line-numbers {
 	position: relative;
 	-webkit-user-select: none;
 	-moz-user-select: none;
 	-ms-user-select: none;
 	user-select: none;
 }
-.line-numbers span {
+.src-line-numbers span {
 	cursor: pointer;
 }
 
@@ -2067,7 +2067,7 @@ in storage.js plus the media query with (min-width: 701px)
 	padding-bottom: 0;
 }
 
-.scraped-example:not(.expanded) .code-wrapper pre.line-numbers {
+.scraped-example:not(.expanded) .code-wrapper pre.src-line-numbers {
 	overflow-x: hidden;
 }
 
@@ -2113,12 +2113,12 @@ in storage.js plus the media query with (min-width: 701px)
 	bottom: 0;
 }
 
-.scraped-example .code-wrapper .line-numbers {
+.scraped-example .code-wrapper .src-line-numbers {
 	margin: 0;
 	padding: 14px 0;
 }
 
-.scraped-example .code-wrapper .line-numbers span {
+.scraped-example .code-wrapper .src-line-numbers span {
 	padding: 0 14px;
 }
 
diff --git a/src/librustdoc/html/static/css/themes/ayu.css b/src/librustdoc/html/static/css/themes/ayu.css
index e7a898e9fa62c..44238ca573dcd 100644
--- a/src/librustdoc/html/static/css/themes/ayu.css
+++ b/src/librustdoc/html/static/css/themes/ayu.css
@@ -93,8 +93,8 @@ pre, .rustdoc.source .example-wrap {
 	color: #ff7733;
 }
 
-.line-numbers span { color: #5c6773; }
-.line-numbers .line-highlighted {
+.src-line-numbers span { color: #5c6773; }
+.src-line-numbers .line-highlighted {
 	color: #708090;
 	background-color: rgba(255, 236, 164, 0.06);
 	padding-right: 4px;
@@ -171,7 +171,7 @@ details.rustdoc-toggle > summary::before {
 	color: #788797;
 }
 
-.line-numbers :target { background-color: transparent; }
+.src-line-numbers :target { background-color: transparent; }
 
 /* Code highlighting */
 pre.rust .number, pre.rust .string { color: #b8cc52; }
@@ -190,7 +190,7 @@ pre.rust .attribute {
 	color: #e6e1cf;
 }
 
-.example-wrap > pre.line-number {
+pre.example-line-numbers {
 	color: #5c67736e;
 	border: none;
 }
diff --git a/src/librustdoc/html/static/css/themes/dark.css b/src/librustdoc/html/static/css/themes/dark.css
index 07a1ed8b7db74..858d836c03d5e 100644
--- a/src/librustdoc/html/static/css/themes/dark.css
+++ b/src/librustdoc/html/static/css/themes/dark.css
@@ -54,8 +54,8 @@ input:focus + .slider {
 	background: #444;
 }
 
-.line-numbers span { color: #3B91E2; }
-.line-numbers .line-highlighted {
+.src-line-numbers span { color: #3B91E2; }
+.src-line-numbers .line-highlighted {
 	background-color: #0a042f !important;
 }
 
@@ -141,7 +141,7 @@ details.rustdoc-toggle > summary::before {
 	background: none;
 }
 
-.line-numbers :target { background-color: transparent; }
+.src-line-numbers :target { background-color: transparent; }
 
 /* Code highlighting */
 pre.rust .kw { color: #ab8ac1; }
@@ -155,7 +155,7 @@ pre.rust .question-mark {
 	color: #ff9011;
 }
 
-.example-wrap > pre.line-number {
+pre.example-line-numbers {
 	border-color: #4a4949;
 }
 
diff --git a/src/librustdoc/html/static/css/themes/light.css b/src/librustdoc/html/static/css/themes/light.css
index 64335f6292801..6fbea6f6c7a5d 100644
--- a/src/librustdoc/html/static/css/themes/light.css
+++ b/src/librustdoc/html/static/css/themes/light.css
@@ -53,8 +53,8 @@ input:focus + .slider {
 	background-color: #fff;
 }
 
-.line-numbers span { color: #c67e2d; }
-.line-numbers .line-highlighted {
+.src-line-numbers span { color: #c67e2d; }
+.src-line-numbers .line-highlighted {
 	background-color: #FDFFD3 !important;
 }
 
@@ -125,7 +125,7 @@ body.source .example-wrap pre.rust a {
 .stab { background: #FFF5D6; border-color: #FFC600; }
 .stab.portability > code { background: none; }
 
-.line-numbers :target { background-color: transparent; }
+.src-line-numbers :target { background-color: transparent; }
 
 /* Code highlighting */
 pre.rust .kw { color: #8959A8; }
@@ -141,7 +141,7 @@ pre.rust .question-mark {
 	color: #ff9011;
 }
 
-.example-wrap > pre.line-number {
+pre.example-line-numbers {
 	border-color: #c7c7c7;
 }
 
diff --git a/src/librustdoc/html/static/js/main.js b/src/librustdoc/html/static/js/main.js
index c9674f11a5ecf..bbaf6d3b50797 100644
--- a/src/librustdoc/html/static/js/main.js
+++ b/src/librustdoc/html/static/js/main.js
@@ -699,7 +699,7 @@ function loadCss(cssFileName) {
     window.rustdoc_add_line_numbers_to_examples = () => {
         onEachLazy(document.getElementsByClassName("rust-example-rendered"), x => {
             const parent = x.parentNode;
-            const line_numbers = parent.querySelectorAll(".line-number");
+            const line_numbers = parent.querySelectorAll(".example-line-numbers");
             if (line_numbers.length > 0) {
                 return;
             }
@@ -709,7 +709,7 @@ function loadCss(cssFileName) {
                 elems.push(i + 1);
             }
             const node = document.createElement("pre");
-            addClass(node, "line-number");
+            addClass(node, "example-line-numbers");
             node.innerHTML = elems.join("\n");
             parent.insertBefore(node, x);
         });
@@ -718,7 +718,7 @@ function loadCss(cssFileName) {
     window.rustdoc_remove_line_numbers_from_examples = () => {
         onEachLazy(document.getElementsByClassName("rust-example-rendered"), x => {
             const parent = x.parentNode;
-            const line_numbers = parent.querySelectorAll(".line-number");
+            const line_numbers = parent.querySelectorAll(".example-line-numbers");
             for (const node of line_numbers) {
                 parent.removeChild(node);
             }
diff --git a/src/librustdoc/html/static/js/scrape-examples.js b/src/librustdoc/html/static/js/scrape-examples.js
index fd7a1449763eb..d0fd115fd15c6 100644
--- a/src/librustdoc/html/static/js/scrape-examples.js
+++ b/src/librustdoc/html/static/js/scrape-examples.js
@@ -8,7 +8,7 @@
 
     // Scroll code block to the given code location
     function scrollToLoc(elt, loc) {
-        const lines = elt.querySelector(".line-numbers");
+        const lines = elt.querySelector(".src-line-numbers");
         let scrollOffset;
 
         // If the block is greater than the size of the viewer,
diff --git a/src/librustdoc/html/static/js/source-script.js b/src/librustdoc/html/static/js/source-script.js
index 06d15d9e5ffea..8286e9201e649 100644
--- a/src/librustdoc/html/static/js/source-script.js
+++ b/src/librustdoc/html/static/js/source-script.js
@@ -183,7 +183,7 @@ function highlightSourceLines(match) {
     if (x) {
         x.scrollIntoView();
     }
-    onEachLazy(document.getElementsByClassName("line-numbers"), e => {
+    onEachLazy(document.getElementsByClassName("src-line-numbers"), e => {
         onEachLazy(e.getElementsByTagName("span"), i_e => {
             removeClass(i_e, "line-highlighted");
         });
@@ -245,7 +245,7 @@ window.addEventListener("hashchange", () => {
     }
 });
 
-onEachLazy(document.getElementsByClassName("line-numbers"), el => {
+onEachLazy(document.getElementsByClassName("src-line-numbers"), el => {
     el.addEventListener("click", handleSourceHighlight);
 });
 
diff --git a/src/test/run-make-fulldeps/rustdoc-scrape-examples-macros/src/lib.rs b/src/test/run-make-fulldeps/rustdoc-scrape-examples-macros/src/lib.rs
index bac3970a4d37f..d8658a0f25577 100644
--- a/src/test/run-make-fulldeps/rustdoc-scrape-examples-macros/src/lib.rs
+++ b/src/test/run-make-fulldeps/rustdoc-scrape-examples-macros/src/lib.rs
@@ -1,8 +1,8 @@
 // Scraped example should only include line numbers for items b and c in ex.rs
-// @!has foobar/fn.f.html '//*[@class="line-numbers"]' '14'
-// @has foobar/fn.f.html '//*[@class="line-numbers"]' '15'
-// @has foobar/fn.f.html '//*[@class="line-numbers"]' '21'
-// @!has foobar/fn.f.html '//*[@class="line-numbers"]' '22'
+// @!has foobar/fn.f.html '//*[@class="src-line-numbers"]' '14'
+// @has foobar/fn.f.html '//*[@class="src-line-numbers"]' '15'
+// @has foobar/fn.f.html '//*[@class="src-line-numbers"]' '21'
+// @!has foobar/fn.f.html '//*[@class="src-line-numbers"]' '22'
 
 pub fn f() {}
 
diff --git a/src/test/rustdoc-gui/basic-code.goml b/src/test/rustdoc-gui/basic-code.goml
index 27deb2c989c8b..79090b499c832 100644
--- a/src/test/rustdoc-gui/basic-code.goml
+++ b/src/test/rustdoc-gui/basic-code.goml
@@ -1,3 +1,3 @@
 goto: file://|DOC_PATH|/test_docs/index.html
 click: ".srclink"
-assert-count: (".line-numbers", 1)
+assert-count: (".src-line-numbers", 1)
diff --git a/src/test/rustdoc-gui/docblock-code-block-line-number.goml b/src/test/rustdoc-gui/docblock-code-block-line-number.goml
index ebfffbce71561..4e1e83c0fbd73 100644
--- a/src/test/rustdoc-gui/docblock-code-block-line-number.goml
+++ b/src/test/rustdoc-gui/docblock-code-block-line-number.goml
@@ -2,7 +2,7 @@
 goto: file://|DOC_PATH|/test_docs/fn.foo.html
 
 // We check that without this setting, there is no line number displayed.
-assert-false: "pre.line-number"
+assert-false: "pre.example-line-numbers"
 
 // We now set the setting to show the line numbers on code examples.
 local-storage: {"rustdoc-line-numbers": "true" }
@@ -10,16 +10,16 @@ local-storage: {"rustdoc-line-numbers": "true" }
 reload:
 
 // We wait for them to be added into the DOM by the JS...
-wait-for: "pre.line-number"
+wait-for: "pre.example-line-numbers"
 // If the test didn't fail, it means that it was found!
 // Let's now check some CSS properties...
-assert-css: ("pre.line-number", {
+assert-css: ("pre.example-line-numbers", {
     "margin": "0px",
     "padding": "13px 8px",
     "text-align": "right",
 })
 // The first code block has two lines so let's check its `<pre>` elements lists both of them.
-assert-text: ("pre.line-number", "1\n2")
+assert-text: ("pre.example-line-numbers", "1\n2")
 
 // Now, try changing the setting dynamically. We'll turn it off, using the settings menu,
 // and make sure it goes away.
@@ -32,8 +32,8 @@ assert-css: ("#settings", {"display": "block"})
 // Then, click the toggle button.
 click: "input#line-numbers + .slider"
 wait-for: 100 // wait-for-false does not exist
-assert-false: "pre.line-number"
+assert-false: "pre.example-line-numbers"
 
 // Finally, turn it on again.
 click: "input#line-numbers + .slider"
-wait-for: "pre.line-number"
+wait-for: "pre.example-line-numbers"
diff --git a/src/test/rustdoc-gui/source-code-page.goml b/src/test/rustdoc-gui/source-code-page.goml
index 581f826a3d94d..5f0bb7f19c050 100644
--- a/src/test/rustdoc-gui/source-code-page.goml
+++ b/src/test/rustdoc-gui/source-code-page.goml
@@ -1,22 +1,22 @@
 // Checks that the interactions with the source code pages are working as expected.
 goto: file://|DOC_PATH|/src/test_docs/lib.rs.html
 // Check that we can click on the line number.
-click: ".line-numbers > span:nth-child(4)" // This is the span for line 4.
+click: ".src-line-numbers > span:nth-child(4)" // This is the span for line 4.
 // Ensure that the page URL was updated.
 assert-document-property: ({"URL": "lib.rs.html#4"}, ENDS_WITH)
 assert-attribute: ("//*[@id='4']", {"class": "line-highlighted"})
 // We now check that the good spans are highlighted
 goto: file://|DOC_PATH|/src/test_docs/lib.rs.html#4-6
-assert-attribute-false: (".line-numbers > span:nth-child(3)", {"class": "line-highlighted"})
-assert-attribute: (".line-numbers > span:nth-child(4)", {"class": "line-highlighted"})
-assert-attribute: (".line-numbers > span:nth-child(5)", {"class": "line-highlighted"})
-assert-attribute: (".line-numbers > span:nth-child(6)", {"class": "line-highlighted"})
-assert-attribute-false: (".line-numbers > span:nth-child(7)", {"class": "line-highlighted"})
+assert-attribute-false: (".src-line-numbers > span:nth-child(3)", {"class": "line-highlighted"})
+assert-attribute: (".src-line-numbers > span:nth-child(4)", {"class": "line-highlighted"})
+assert-attribute: (".src-line-numbers > span:nth-child(5)", {"class": "line-highlighted"})
+assert-attribute: (".src-line-numbers > span:nth-child(6)", {"class": "line-highlighted"})
+assert-attribute-false: (".src-line-numbers > span:nth-child(7)", {"class": "line-highlighted"})
 // This is to ensure that the content is correctly align with the line numbers.
 compare-elements-position: ("//*[@id='1']", ".rust > code > span", ("y"))
 
 // Assert that the line numbers text is aligned to the right.
-assert-css: (".line-numbers", {"text-align": "right"})
+assert-css: (".src-line-numbers", {"text-align": "right"})
 
 // Now let's check that clicking on something else than the line number doesn't
 // do anything (and certainly not add a `#NaN` to the URL!).
@@ -24,7 +24,7 @@ show-text: true
 goto: file://|DOC_PATH|/src/test_docs/lib.rs.html
 // We use this assert-position to know where we will click.
 assert-position: ("//*[@id='1']", {"x": 104, "y": 103})
-// We click on the left of the "1" span but still in the "line-number" `<pre>`.
+// We click on the left of the "1" span but still in the "src-line-number" `<pre>`.
 click: (103, 103)
 assert-document-property: ({"URL": "/lib.rs.html"}, ENDS_WITH)