Revert PR 83866

src/librustdoc/clean/types.rs

@@ -517,10 +517,9 @@ impl Item {
                                 Some(ExternalLocation::Remote(ref s)) => {
                                     format!("{}/std/", s.trim_end_matches('/'))
                                 }
-                                Some(ExternalLocation::Unknown) | None => format!(
-                                    "https://doc.rust-lang.org/{}/std/",
-                                    crate::doc_rust_lang_org_channel(),
-                                ),
+                                Some(ExternalLocation::Unknown) | None => {
+                                    "https://doc.rust-lang.org/nightly/std/".to_string()
+                                }
                             };
                             // This is a primitive so the url is done "by hand".
                             let tail = fragment.find('#').unwrap_or_else(|| fragment.len());

src/librustdoc/clean/utils.rs

@@ -542,14 +542,3 @@ crate fn has_doc_flag(attrs: ty::Attributes<'_>, flag: Symbol) -> bool {
             && attr.meta_item_list().map_or(false, |l| rustc_attr::list_contains_name(&l, flag))
     })
 }
-
-/// Return a channel suitable for using in a `doc.rust-lang.org/{channel}` format string.
-crate fn doc_rust_lang_org_channel() -> &'static str {
-    match env!("CFG_RELEASE_CHANNEL") {
-        "stable" => env!("CFG_RELEASE_NUM"),
-        "beta" => "beta",
-        "nightly" | "dev" => "nightly",
-        // custom build of rustdoc maybe? link to the stable docs just in case
-        _ => "",
-    }
-}

src/librustdoc/core.rs

@@ -406,18 +406,15 @@ crate fn run_global_ctxt(
     let mut krate = tcx.sess.time("clean_crate", || clean::krate(&mut ctxt));
 
     if krate.module.doc_value().map(|d| d.is_empty()).unwrap_or(true) {
-        let help = format!(
-            "The following guide may be of use:\n\
-            https://doc.rust-lang.org/{}/rustdoc/how-to-write-documentation.html",
-            crate::doc_rust_lang_org_channel(),
-        );
+        let help = "The following guide may be of use:\n\
+                https://doc.rust-lang.org/nightly/rustdoc/how-to-write-documentation.html";
         tcx.struct_lint_node(
             crate::lint::MISSING_CRATE_LEVEL_DOCS,
             DocContext::as_local_hir_id(tcx, krate.module.def_id).unwrap(),
             |lint| {
                 let mut diag =
                     lint.build("no documentation found for this crate's top-level module");
-                diag.help(&help);
+                diag.help(help);
                 diag.emit();
             },
         );

src/librustdoc/lib.rs

@@ -82,8 +82,6 @@ use rustc_session::config::{make_crate_type_option, ErrorOutputType, RustcOptGro
 use rustc_session::getopts;
 use rustc_session::{early_error, early_warn};
 
-use crate::clean::utils::doc_rust_lang_org_channel;
-
 /// A macro to create a FxHashMap.
 ///
 /// Example:
@@ -606,10 +604,7 @@ fn usage(argv0: &str) {
     }
     println!("{}", options.usage(&format!("{} [options] <input>", argv0)));
     println!("    @path               Read newline separated options from `path`\n");
-    println!(
-        "More information available at https://doc.rust-lang.org/{}/rustdoc/what-is-rustdoc.html",
-        doc_rust_lang_org_channel()
-    );
+    println!("More information available at https://doc.rust-lang.org/rustdoc/what-is-rustdoc.html")
 }
 
 /// A result type used by several functions under `main()`.

src/librustdoc/passes/collect_intra_doc_links.rs

@@ -2017,14 +2017,7 @@ fn disambiguator_error(
     msg: &str,
 ) {
     diag_info.link_range = disambiguator_range;
-    report_diagnostic(cx.tcx, BROKEN_INTRA_DOC_LINKS, msg, &diag_info, |diag, _sp| {
-        let msg = format!(
-            "see https://doc.rust-lang.org/{}/rustdoc/linking-to-items-by-name.html#namespaces-and-disambiguators \
-             for more info about disambiguators",
-            crate::doc_rust_lang_org_channel(),
-        );
-        diag.note(&msg);
-    });
+    report_diagnostic(cx.tcx, BROKEN_INTRA_DOC_LINKS, msg, &diag_info, |_diag, _sp| {});
 }
 
 /// Report an ambiguity error, where there were multiple possible resolutions.

src/test/rustdoc-ui/intra-doc/email-address-localhost.stderr

@@ -10,7 +10,6 @@ note: the lint level is defined here
 LL | #![deny(warnings)]
    |         ^^^^^^^^
    = note: `#[deny(rustdoc::broken_intra_doc_links)]` implied by `#[deny(warnings)]`
-   = note: see https://doc.rust-lang.org/nightly/rustdoc/linking-to-items-by-name.html#namespaces-and-disambiguators for more info about disambiguators
 
 error: aborting due to previous error
 

src/test/rustdoc-ui/intra-doc/unknown-disambiguator.stderr

@@ -10,47 +10,36 @@ note: the lint level is defined here
 LL | #![deny(warnings)]
    |         ^^^^^^^^
    = note: `#[deny(rustdoc::broken_intra_doc_links)]` implied by `#[deny(warnings)]`
-   = note: see https://doc.rust-lang.org/nightly/rustdoc/linking-to-items-by-name.html#namespaces-and-disambiguators for more info about disambiguators
 
 error: unknown disambiguator `bar`
   --> $DIR/unknown-disambiguator.rs:3:35
    |
 LL | //! Linking to [foo@banana] and [`bar@banana!()`].
    |                                   ^^^
-   |
-   = note: see https://doc.rust-lang.org/nightly/rustdoc/linking-to-items-by-name.html#namespaces-and-disambiguators for more info about disambiguators
 
 error: unknown disambiguator `foo`
   --> $DIR/unknown-disambiguator.rs:9:34
    |
 LL | //! And with weird backticks: [``foo@hello``] [foo`@`hello].
    |                                  ^^^
-   |
-   = note: see https://doc.rust-lang.org/nightly/rustdoc/linking-to-items-by-name.html#namespaces-and-disambiguators for more info about disambiguators
 
 error: unknown disambiguator `foo`
   --> $DIR/unknown-disambiguator.rs:9:48
    |
 LL | //! And with weird backticks: [``foo@hello``] [foo`@`hello].
    |                                                ^^^
-   |
-   = note: see https://doc.rust-lang.org/nightly/rustdoc/linking-to-items-by-name.html#namespaces-and-disambiguators for more info about disambiguators
 
 error: unknown disambiguator ``
   --> $DIR/unknown-disambiguator.rs:6:31
    |
 LL | //! And to [no disambiguator](@nectarine) and [another](@apricot!()).
    |                               ^
-   |
-   = note: see https://doc.rust-lang.org/nightly/rustdoc/linking-to-items-by-name.html#namespaces-and-disambiguators for more info about disambiguators
 
 error: unknown disambiguator ``
   --> $DIR/unknown-disambiguator.rs:6:57
    |
 LL | //! And to [no disambiguator](@nectarine) and [another](@apricot!()).
    |                                                         ^
-   |
-   = note: see https://doc.rust-lang.org/nightly/rustdoc/linking-to-items-by-name.html#namespaces-and-disambiguators for more info about disambiguators
 
 error: aborting due to 6 previous errors