diff --git a/compiler/rustc_session/src/config.rs b/compiler/rustc_session/src/config.rs
index 7aca86f7169..d9fc43625ef 100644
--- a/compiler/rustc_session/src/config.rs
+++ b/compiler/rustc_session/src/config.rs
@@ -1373,7 +1373,7 @@ pub fn rustc_short_optgroups() -> Vec<RustcOptGroup> {
         opt::flag_s("h", "help", "Display this message"),
         opt::multi_s("", "cfg", "Configure the compilation environment.
                              SPEC supports the syntax `NAME[=\"VALUE\"]`.", "SPEC"),
-        opt::multi("", "check-cfg", "Provide list of valid cfg options for checking", "SPEC"),
+        opt::multi_s("", "check-cfg", "Provide list of expected cfgs for checking", "SPEC"),
         opt::multi_s(
             "L",
             "",
diff --git a/src/librustdoc/doctest.rs b/src/librustdoc/doctest.rs
index 22a3cf4d44d..0ad4c9c2346 100644
--- a/src/librustdoc/doctest.rs
+++ b/src/librustdoc/doctest.rs
@@ -60,11 +60,8 @@ pub(crate) fn generate_args_file(file_path: &Path, options: &RustdocOptions) ->
     for cfg in &options.cfgs {
         content.push(format!("--cfg={cfg}"));
     }
-    if !options.check_cfgs.is_empty() {
-        content.push("-Zunstable-options".to_string());
-        for check_cfg in &options.check_cfgs {
-            content.push(format!("--check-cfg={check_cfg}"));
-        }
+    for check_cfg in &options.check_cfgs {
+        content.push(format!("--check-cfg={check_cfg}"));
     }
 
     for lib_str in &options.lib_strs {
diff --git a/src/librustdoc/lib.rs b/src/librustdoc/lib.rs
index b78fb4c4eee..f2a7518b4ce 100644
--- a/src/librustdoc/lib.rs
+++ b/src/librustdoc/lib.rs
@@ -242,7 +242,7 @@ fn opts() -> Vec<RustcOptGroup> {
             o.optmulti("L", "library-path", "directory to add to crate search path", "DIR")
         }),
         stable("cfg", |o| o.optmulti("", "cfg", "pass a --cfg to rustc", "")),
-        unstable("check-cfg", |o| o.optmulti("", "check-cfg", "pass a --check-cfg to rustc", "")),
+        stable("check-cfg", |o| o.optmulti("", "check-cfg", "pass a --check-cfg to rustc", "")),
         stable("extern", |o| o.optmulti("", "extern", "pass an --extern to rustc", "NAME[=PATH]")),
         unstable("extern-html-root-url", |o| {
             o.optmulti(
diff --git a/tests/rustdoc-ui/check-cfg/check-cfg.rs b/tests/rustdoc-ui/check-cfg.rs
similarity index 73%
rename from tests/rustdoc-ui/check-cfg/check-cfg.rs
rename to tests/rustdoc-ui/check-cfg.rs
index 27b09985728..6ca37db75af 100644
--- a/tests/rustdoc-ui/check-cfg/check-cfg.rs
+++ b/tests/rustdoc-ui/check-cfg.rs
@@ -1,5 +1,5 @@
 //@ check-pass
-//@ compile-flags: --check-cfg=cfg() -Z unstable-options
+//@ compile-flags: --check-cfg=cfg()
 
 /// uniz is nor a builtin nor pass as arguments so is unexpected
 #[cfg(uniz)]
diff --git a/tests/rustdoc-ui/check-cfg/check-cfg.stderr b/tests/rustdoc-ui/check-cfg.stderr
similarity index 100%
rename from tests/rustdoc-ui/check-cfg/check-cfg.stderr
rename to tests/rustdoc-ui/check-cfg.stderr
diff --git a/tests/rustdoc-ui/check-cfg/check-cfg-test.stderr b/tests/rustdoc-ui/check-cfg/check-cfg-test.stderr
deleted file mode 100644
index 9770be2f191..00000000000
--- a/tests/rustdoc-ui/check-cfg/check-cfg-test.stderr
+++ /dev/null
@@ -1,11 +0,0 @@
-warning: unexpected `cfg` condition value
-  --> $DIR/check-cfg-test.rs:9:7
-   |
-LL | #[cfg(feature = "invalid")]
-   |       ^^^^^^^^^^^^^^^^^^^
-   |
-   = note: expected values for `feature` are: test
-   = note: `#[warn(unexpected_cfgs)]` on by default
-
-warning: 1 warning emitted
-
diff --git a/tests/rustdoc-ui/check-cfg/check-cfg-unstable.rs b/tests/rustdoc-ui/check-cfg/check-cfg-unstable.rs
deleted file mode 100644
index b24b198e807..00000000000
--- a/tests/rustdoc-ui/check-cfg/check-cfg-unstable.rs
+++ /dev/null
@@ -1,2 +0,0 @@
-//@ check-fail
-//@ compile-flags: --check-cfg=cfg()
diff --git a/tests/rustdoc-ui/check-cfg/check-cfg-unstable.stderr b/tests/rustdoc-ui/check-cfg/check-cfg-unstable.stderr
deleted file mode 100644
index 9b27c2bc058..00000000000
--- a/tests/rustdoc-ui/check-cfg/check-cfg-unstable.stderr
+++ /dev/null
@@ -1,2 +0,0 @@
-error: the `-Z unstable-options` flag must also be passed to enable the flag `check-cfg`
-
diff --git a/tests/ui/check-cfg/allow-at-crate-level.rs b/tests/ui/check-cfg/allow-at-crate-level.rs
index 48258b97ccc..03b4676ad5f 100644
--- a/tests/ui/check-cfg/allow-at-crate-level.rs
+++ b/tests/ui/check-cfg/allow-at-crate-level.rs
@@ -1,7 +1,7 @@
 // This test check that #![allow(unexpected_cfgs)] works with --cfg
 //
 //@ check-pass
-//@ compile-flags: --cfg=unexpected --check-cfg=cfg() -Z unstable-options
+//@ compile-flags: --cfg=unexpected --check-cfg=cfg()
 
 #![allow(unexpected_cfgs)]
 
diff --git a/tests/ui/check-cfg/allow-macro-cfg.rs b/tests/ui/check-cfg/allow-macro-cfg.rs
index d3999af7766..3db6e18d77a 100644
--- a/tests/ui/check-cfg/allow-macro-cfg.rs
+++ b/tests/ui/check-cfg/allow-macro-cfg.rs
@@ -1,7 +1,7 @@
 // This test check that local #[allow(unexpected_cfgs)] works
 //
 //@ check-pass
-//@ compile-flags: --check-cfg=cfg() -Z unstable-options
+//@ compile-flags: --check-cfg=cfg()
 
 #[allow(unexpected_cfgs)]
 fn foo() {
diff --git a/tests/ui/check-cfg/allow-same-level.rs b/tests/ui/check-cfg/allow-same-level.rs
index 231ad522c8d..e932ece6ee7 100644
--- a/tests/ui/check-cfg/allow-same-level.rs
+++ b/tests/ui/check-cfg/allow-same-level.rs
@@ -1,7 +1,7 @@
 // This test check that #[allow(unexpected_cfgs)] doesn't work if put on the same level
 //
 //@ check-pass
-//@ compile-flags: --check-cfg=cfg() -Z unstable-options
+//@ compile-flags: --check-cfg=cfg()
 
 #[allow(unexpected_cfgs)]
 #[cfg(FALSE)]
diff --git a/tests/ui/check-cfg/allow-top-level.rs b/tests/ui/check-cfg/allow-top-level.rs
index c77a0c7c97b..0f88543d847 100644
--- a/tests/ui/check-cfg/allow-top-level.rs
+++ b/tests/ui/check-cfg/allow-top-level.rs
@@ -1,7 +1,7 @@
 // This test check that a top-level #![allow(unexpected_cfgs)] works
 //
 //@ check-pass
-//@ compile-flags: --check-cfg=cfg() -Z unstable-options
+//@ compile-flags: --check-cfg=cfg()
 
 #![allow(unexpected_cfgs)]
 
diff --git a/tests/ui/check-cfg/allow-upper-level.rs b/tests/ui/check-cfg/allow-upper-level.rs
index 97339a887bf..d03d0cab37b 100644
--- a/tests/ui/check-cfg/allow-upper-level.rs
+++ b/tests/ui/check-cfg/allow-upper-level.rs
@@ -1,7 +1,7 @@
 // This test check that #[allow(unexpected_cfgs)] work if put on an upper level
 //
 //@ check-pass
-//@ compile-flags: --check-cfg=cfg() -Z unstable-options
+//@ compile-flags: --check-cfg=cfg()
 
 #[allow(unexpected_cfgs)]
 mod aa {
diff --git a/tests/ui/check-cfg/cargo-feature.none.stderr b/tests/ui/check-cfg/cargo-feature.none.stderr
index 09a1c950267..0b914c2bc35 100644
--- a/tests/ui/check-cfg/cargo-feature.none.stderr
+++ b/tests/ui/check-cfg/cargo-feature.none.stderr
@@ -1,5 +1,5 @@
 warning: unexpected `cfg` condition value: `serde`
-  --> $DIR/cargo-feature.rs:14:7
+  --> $DIR/cargo-feature.rs:13:7
    |
 LL | #[cfg(feature = "serde")]
    |       ^^^^^^^^^^^^^^^^^ help: remove the condition
@@ -10,7 +10,7 @@ LL | #[cfg(feature = "serde")]
    = note: `#[warn(unexpected_cfgs)]` on by default
 
 warning: unexpected `cfg` condition value: (none)
-  --> $DIR/cargo-feature.rs:18:7
+  --> $DIR/cargo-feature.rs:17:7
    |
 LL | #[cfg(feature)]
    |       ^^^^^^^ help: remove the condition
@@ -20,7 +20,7 @@ LL | #[cfg(feature)]
    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
 
 warning: unexpected `cfg` condition name: `tokio_unstable`
-  --> $DIR/cargo-feature.rs:22:7
+  --> $DIR/cargo-feature.rs:21:7
    |
 LL | #[cfg(tokio_unstable)]
    |       ^^^^^^^^^^^^^^
@@ -30,7 +30,7 @@ LL | #[cfg(tokio_unstable)]
    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
 
 warning: unexpected `cfg` condition name: `CONFIG_NVME`
-  --> $DIR/cargo-feature.rs:26:7
+  --> $DIR/cargo-feature.rs:25:7
    |
 LL | #[cfg(CONFIG_NVME = "m")]
    |       ^^^^^^^^^^^^^^^^^
diff --git a/tests/ui/check-cfg/cargo-feature.rs b/tests/ui/check-cfg/cargo-feature.rs
index ba451921d79..ced0d381d2d 100644
--- a/tests/ui/check-cfg/cargo-feature.rs
+++ b/tests/ui/check-cfg/cargo-feature.rs
@@ -5,7 +5,6 @@
 //@ check-pass
 //@ revisions: some none
 //@ rustc-env:CARGO_CRATE_NAME=foo
-//@ compile-flags: -Z unstable-options
 //@ [none]compile-flags: --check-cfg=cfg(feature,values())
 //@ [some]compile-flags: --check-cfg=cfg(feature,values("bitcode"))
 //@ [some]compile-flags: --check-cfg=cfg(CONFIG_NVME,values("y"))
diff --git a/tests/ui/check-cfg/cargo-feature.some.stderr b/tests/ui/check-cfg/cargo-feature.some.stderr
index 4db9c66fc86..1a4ef89efc1 100644
--- a/tests/ui/check-cfg/cargo-feature.some.stderr
+++ b/tests/ui/check-cfg/cargo-feature.some.stderr
@@ -1,5 +1,5 @@
 warning: unexpected `cfg` condition value: `serde`
-  --> $DIR/cargo-feature.rs:14:7
+  --> $DIR/cargo-feature.rs:13:7
    |
 LL | #[cfg(feature = "serde")]
    |       ^^^^^^^^^^^^^^^^^
@@ -10,7 +10,7 @@ LL | #[cfg(feature = "serde")]
    = note: `#[warn(unexpected_cfgs)]` on by default
 
 warning: unexpected `cfg` condition value: (none)
-  --> $DIR/cargo-feature.rs:18:7
+  --> $DIR/cargo-feature.rs:17:7
    |
 LL | #[cfg(feature)]
    |       ^^^^^^^- help: specify a config value: `= "bitcode"`
@@ -20,7 +20,7 @@ LL | #[cfg(feature)]
    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
 
 warning: unexpected `cfg` condition name: `tokio_unstable`
-  --> $DIR/cargo-feature.rs:22:7
+  --> $DIR/cargo-feature.rs:21:7
    |
 LL | #[cfg(tokio_unstable)]
    |       ^^^^^^^^^^^^^^
@@ -30,7 +30,7 @@ LL | #[cfg(tokio_unstable)]
    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
 
 warning: unexpected `cfg` condition value: `m`
-  --> $DIR/cargo-feature.rs:26:7
+  --> $DIR/cargo-feature.rs:25:7
    |
 LL | #[cfg(CONFIG_NVME = "m")]
    |       ^^^^^^^^^^^^^^---
diff --git a/tests/ui/check-cfg/cfg-value-for-cfg-name-duplicate.rs b/tests/ui/check-cfg/cfg-value-for-cfg-name-duplicate.rs
index 35c5f2ae31c..79d4e45c13b 100644
--- a/tests/ui/check-cfg/cfg-value-for-cfg-name-duplicate.rs
+++ b/tests/ui/check-cfg/cfg-value-for-cfg-name-duplicate.rs
@@ -2,7 +2,6 @@
 // This test checks we won't suggest more than 3 span suggestions for cfg names
 //
 //@ check-pass
-//@ compile-flags: -Z unstable-options
 //@ compile-flags: --check-cfg=cfg(foo,values("value")) --check-cfg=cfg(bar,values("value")) --check-cfg=cfg(bee,values("value")) --check-cfg=cfg(cow,values("value"))
 
 #[cfg(value)]
diff --git a/tests/ui/check-cfg/cfg-value-for-cfg-name-duplicate.stderr b/tests/ui/check-cfg/cfg-value-for-cfg-name-duplicate.stderr
index 9c190117e74..46d6d29b15e 100644
--- a/tests/ui/check-cfg/cfg-value-for-cfg-name-duplicate.stderr
+++ b/tests/ui/check-cfg/cfg-value-for-cfg-name-duplicate.stderr
@@ -1,5 +1,5 @@
 warning: unexpected `cfg` condition name: `value`
-  --> $DIR/cfg-value-for-cfg-name-duplicate.rs:8:7
+  --> $DIR/cfg-value-for-cfg-name-duplicate.rs:7:7
    |
 LL | #[cfg(value)]
    |       ^^^^^
diff --git a/tests/ui/check-cfg/cfg-value-for-cfg-name-multiple.rs b/tests/ui/check-cfg/cfg-value-for-cfg-name-multiple.rs
index 6caedbe719e..f2fd050bb75 100644
--- a/tests/ui/check-cfg/cfg-value-for-cfg-name-multiple.rs
+++ b/tests/ui/check-cfg/cfg-value-for-cfg-name-multiple.rs
@@ -2,7 +2,6 @@
 // This test checks that when a single cfg has a value for user's specified name
 //
 //@ check-pass
-//@ compile-flags: -Z unstable-options
 //@ compile-flags: --check-cfg=cfg(foo,values("my_value")) --check-cfg=cfg(bar,values("my_value"))
 
 #[cfg(my_value)]
diff --git a/tests/ui/check-cfg/cfg-value-for-cfg-name-multiple.stderr b/tests/ui/check-cfg/cfg-value-for-cfg-name-multiple.stderr
index 7113790b83a..a70a8b2d3e4 100644
--- a/tests/ui/check-cfg/cfg-value-for-cfg-name-multiple.stderr
+++ b/tests/ui/check-cfg/cfg-value-for-cfg-name-multiple.stderr
@@ -1,5 +1,5 @@
 warning: unexpected `cfg` condition name: `my_value`
-  --> $DIR/cfg-value-for-cfg-name-multiple.rs:8:7
+  --> $DIR/cfg-value-for-cfg-name-multiple.rs:7:7
    |
 LL | #[cfg(my_value)]
    |       ^^^^^^^^
diff --git a/tests/ui/check-cfg/cfg-value-for-cfg-name.rs b/tests/ui/check-cfg/cfg-value-for-cfg-name.rs
index eade190a75c..e8f9095655b 100644
--- a/tests/ui/check-cfg/cfg-value-for-cfg-name.rs
+++ b/tests/ui/check-cfg/cfg-value-for-cfg-name.rs
@@ -3,7 +3,6 @@
 // suggest to use `#[cfg(target_os = "linux")]` instead of `#[cfg(linux)]`
 //
 //@ check-pass
-//@ compile-flags: -Z unstable-options
 //@ compile-flags: --check-cfg=cfg()
 
 #[cfg(linux)]
diff --git a/tests/ui/check-cfg/cfg-value-for-cfg-name.stderr b/tests/ui/check-cfg/cfg-value-for-cfg-name.stderr
index ba9f5f4acbd..fab7f595c25 100644
--- a/tests/ui/check-cfg/cfg-value-for-cfg-name.stderr
+++ b/tests/ui/check-cfg/cfg-value-for-cfg-name.stderr
@@ -1,5 +1,5 @@
 warning: unexpected `cfg` condition name: `linux`
-  --> $DIR/cfg-value-for-cfg-name.rs:9:7
+  --> $DIR/cfg-value-for-cfg-name.rs:8:7
    |
 LL | #[cfg(linux)]
    |       ^^^^^ help: found config with similar value: `target_os = "linux"`
@@ -10,7 +10,7 @@ LL | #[cfg(linux)]
    = note: `#[warn(unexpected_cfgs)]` on by default
 
 warning: unexpected `cfg` condition name: `linux`
-  --> $DIR/cfg-value-for-cfg-name.rs:14:7
+  --> $DIR/cfg-value-for-cfg-name.rs:13:7
    |
 LL | #[cfg(linux = "os-name")]
    |       ^^^^^^^^^^^^^^^^^
diff --git a/tests/ui/check-cfg/compact-names.rs b/tests/ui/check-cfg/compact-names.rs
index 6592d2acb82..ddbd20b99b2 100644
--- a/tests/ui/check-cfg/compact-names.rs
+++ b/tests/ui/check-cfg/compact-names.rs
@@ -1,7 +1,7 @@
 // This test check that we correctly emit an warning for compact cfg
 //
 //@ check-pass
-//@ compile-flags: --check-cfg=cfg() -Z unstable-options
+//@ compile-flags: --check-cfg=cfg()
 
 #![feature(cfg_target_compact)]
 
diff --git a/tests/ui/check-cfg/compact-values.rs b/tests/ui/check-cfg/compact-values.rs
index 8df2bf55264..bda4686ebd7 100644
--- a/tests/ui/check-cfg/compact-values.rs
+++ b/tests/ui/check-cfg/compact-values.rs
@@ -1,7 +1,7 @@
 // This test check that we correctly emit an warning for compact cfg
 //
 //@ check-pass
-//@ compile-flags: --check-cfg=cfg() -Z unstable-options
+//@ compile-flags: --check-cfg=cfg()
 
 #![feature(cfg_target_compact)]
 
diff --git a/tests/ui/check-cfg/concat-values.rs b/tests/ui/check-cfg/concat-values.rs
index 0b2c1949ca3..c546590a2c1 100644
--- a/tests/ui/check-cfg/concat-values.rs
+++ b/tests/ui/check-cfg/concat-values.rs
@@ -1,5 +1,4 @@
 //@ check-pass
-//@ compile-flags: -Z unstable-options
 //@ compile-flags: --check-cfg=cfg(my_cfg,values("foo")) --check-cfg=cfg(my_cfg,values("bar"))
 //@ compile-flags: --check-cfg=cfg(my_cfg,values())
 
diff --git a/tests/ui/check-cfg/concat-values.stderr b/tests/ui/check-cfg/concat-values.stderr
index 6fe9f2baa09..dec43f5bda3 100644
--- a/tests/ui/check-cfg/concat-values.stderr
+++ b/tests/ui/check-cfg/concat-values.stderr
@@ -1,5 +1,5 @@
 warning: unexpected `cfg` condition value: (none)
-  --> $DIR/concat-values.rs:6:7
+  --> $DIR/concat-values.rs:5:7
    |
 LL | #[cfg(my_cfg)]
    |       ^^^^^^
@@ -10,7 +10,7 @@ LL | #[cfg(my_cfg)]
    = note: `#[warn(unexpected_cfgs)]` on by default
 
 warning: unexpected `cfg` condition value: `unk`
-  --> $DIR/concat-values.rs:10:7
+  --> $DIR/concat-values.rs:9:7
    |
 LL | #[cfg(my_cfg = "unk")]
    |       ^^^^^^^^^^^^^^
diff --git a/tests/ui/check-cfg/diagnotics.rs b/tests/ui/check-cfg/diagnotics.rs
index 134bfcf8ef4..cccd6f9bbc3 100644
--- a/tests/ui/check-cfg/diagnotics.rs
+++ b/tests/ui/check-cfg/diagnotics.rs
@@ -2,7 +2,7 @@
 //@ revisions: cargo rustc
 //@ [rustc]unset-rustc-env:CARGO_CRATE_NAME
 //@ [cargo]rustc-env:CARGO_CRATE_NAME=foo
-//@ compile-flags: --check-cfg=cfg(feature,values("foo")) --check-cfg=cfg(no_values) -Z unstable-options
+//@ compile-flags: --check-cfg=cfg(feature,values("foo")) --check-cfg=cfg(no_values)
 
 #[cfg(featur)]
 //~^ WARNING unexpected `cfg` condition name
diff --git a/tests/ui/check-cfg/empty-values.rs b/tests/ui/check-cfg/empty-values.rs
index 07462951e1b..cad2d351b96 100644
--- a/tests/ui/check-cfg/empty-values.rs
+++ b/tests/ui/check-cfg/empty-values.rs
@@ -1,7 +1,7 @@
 // Check that we detect unexpected value when none are allowed
 //
 //@ check-pass
-//@ compile-flags: --check-cfg=cfg(foo,values()) -Zunstable-options
+//@ compile-flags: --check-cfg=cfg(foo,values())
 
 #[cfg(foo = "foo")]
 //~^ WARNING unexpected `cfg` condition value
diff --git a/tests/ui/check-cfg/exhaustive-names-values.empty_cfg.stderr b/tests/ui/check-cfg/exhaustive-names-values.empty_cfg.stderr
index d2870263342..5d1fc74137b 100644
--- a/tests/ui/check-cfg/exhaustive-names-values.empty_cfg.stderr
+++ b/tests/ui/check-cfg/exhaustive-names-values.empty_cfg.stderr
@@ -1,5 +1,5 @@
 warning: unexpected `cfg` condition name: `unknown_key`
-  --> $DIR/exhaustive-names-values.rs:10:7
+  --> $DIR/exhaustive-names-values.rs:9:7
    |
 LL | #[cfg(unknown_key = "value")]
    |       ^^^^^^^^^^^^^^^^^^^^^
@@ -10,7 +10,7 @@ LL | #[cfg(unknown_key = "value")]
    = note: `#[warn(unexpected_cfgs)]` on by default
 
 warning: unexpected `cfg` condition value: `value`
-  --> $DIR/exhaustive-names-values.rs:14:7
+  --> $DIR/exhaustive-names-values.rs:13:7
    |
 LL | #[cfg(test = "value")]
    |       ^^^^----------
@@ -21,7 +21,7 @@ LL | #[cfg(test = "value")]
    = note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration
 
 warning: unexpected `cfg` condition name: `feature`
-  --> $DIR/exhaustive-names-values.rs:18:7
+  --> $DIR/exhaustive-names-values.rs:17:7
    |
 LL | #[cfg(feature = "unk")]
    |       ^^^^^^^^^^^^^^^
@@ -30,7 +30,7 @@ LL | #[cfg(feature = "unk")]
    = note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration
 
 warning: unexpected `cfg` condition name: `feature`
-  --> $DIR/exhaustive-names-values.rs:25:7
+  --> $DIR/exhaustive-names-values.rs:24:7
    |
 LL | #[cfg(feature = "std")]
    |       ^^^^^^^^^^^^^^^
diff --git a/tests/ui/check-cfg/exhaustive-names-values.feature.stderr b/tests/ui/check-cfg/exhaustive-names-values.feature.stderr
index b24b10bb615..9be2ec71b44 100644
--- a/tests/ui/check-cfg/exhaustive-names-values.feature.stderr
+++ b/tests/ui/check-cfg/exhaustive-names-values.feature.stderr
@@ -1,5 +1,5 @@
 warning: unexpected `cfg` condition name: `unknown_key`
-  --> $DIR/exhaustive-names-values.rs:10:7
+  --> $DIR/exhaustive-names-values.rs:9:7
    |
 LL | #[cfg(unknown_key = "value")]
    |       ^^^^^^^^^^^^^^^^^^^^^
@@ -10,7 +10,7 @@ LL | #[cfg(unknown_key = "value")]
    = note: `#[warn(unexpected_cfgs)]` on by default
 
 warning: unexpected `cfg` condition value: `value`
-  --> $DIR/exhaustive-names-values.rs:14:7
+  --> $DIR/exhaustive-names-values.rs:13:7
    |
 LL | #[cfg(test = "value")]
    |       ^^^^----------
@@ -21,7 +21,7 @@ LL | #[cfg(test = "value")]
    = note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration
 
 warning: unexpected `cfg` condition value: `unk`
-  --> $DIR/exhaustive-names-values.rs:18:7
+  --> $DIR/exhaustive-names-values.rs:17:7
    |
 LL | #[cfg(feature = "unk")]
    |       ^^^^^^^^^^^^^^^
diff --git a/tests/ui/check-cfg/exhaustive-names-values.full.stderr b/tests/ui/check-cfg/exhaustive-names-values.full.stderr
index b24b10bb615..9be2ec71b44 100644
--- a/tests/ui/check-cfg/exhaustive-names-values.full.stderr
+++ b/tests/ui/check-cfg/exhaustive-names-values.full.stderr
@@ -1,5 +1,5 @@
 warning: unexpected `cfg` condition name: `unknown_key`
-  --> $DIR/exhaustive-names-values.rs:10:7
+  --> $DIR/exhaustive-names-values.rs:9:7
    |
 LL | #[cfg(unknown_key = "value")]
    |       ^^^^^^^^^^^^^^^^^^^^^
@@ -10,7 +10,7 @@ LL | #[cfg(unknown_key = "value")]
    = note: `#[warn(unexpected_cfgs)]` on by default
 
 warning: unexpected `cfg` condition value: `value`
-  --> $DIR/exhaustive-names-values.rs:14:7
+  --> $DIR/exhaustive-names-values.rs:13:7
    |
 LL | #[cfg(test = "value")]
    |       ^^^^----------
@@ -21,7 +21,7 @@ LL | #[cfg(test = "value")]
    = note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration
 
 warning: unexpected `cfg` condition value: `unk`
-  --> $DIR/exhaustive-names-values.rs:18:7
+  --> $DIR/exhaustive-names-values.rs:17:7
    |
 LL | #[cfg(feature = "unk")]
    |       ^^^^^^^^^^^^^^^
diff --git a/tests/ui/check-cfg/exhaustive-names-values.rs b/tests/ui/check-cfg/exhaustive-names-values.rs
index d554c19ef25..f6c3e1f575a 100644
--- a/tests/ui/check-cfg/exhaustive-names-values.rs
+++ b/tests/ui/check-cfg/exhaustive-names-values.rs
@@ -2,7 +2,6 @@
 //
 //@ check-pass
 //@ revisions: empty_cfg feature full
-//@ compile-flags: -Z unstable-options
 //@ [empty_cfg]compile-flags: --check-cfg=cfg()
 //@ [feature]compile-flags: --check-cfg=cfg(feature,values("std"))
 //@ [full]compile-flags: --check-cfg=cfg(feature,values("std")) --check-cfg=cfg()
diff --git a/tests/ui/check-cfg/exhaustive-names.rs b/tests/ui/check-cfg/exhaustive-names.rs
index edfb3705a7d..23bde4dff55 100644
--- a/tests/ui/check-cfg/exhaustive-names.rs
+++ b/tests/ui/check-cfg/exhaustive-names.rs
@@ -1,7 +1,7 @@
 // Check warning for unexpected cfg
 //
 //@ check-pass
-//@ compile-flags: --check-cfg=cfg() -Z unstable-options
+//@ compile-flags: --check-cfg=cfg()
 
 #[cfg(unknown_key = "value")]
 //~^ WARNING unexpected `cfg` condition name
diff --git a/tests/ui/check-cfg/exhaustive-values.rs b/tests/ui/check-cfg/exhaustive-values.rs
index 5e65caa6aea..029b2ff2c69 100644
--- a/tests/ui/check-cfg/exhaustive-values.rs
+++ b/tests/ui/check-cfg/exhaustive-values.rs
@@ -2,8 +2,8 @@
 //
 //@ check-pass
 //@ revisions: empty_cfg without_names
-//@ [empty_cfg]compile-flags: --check-cfg=cfg() -Z unstable-options
-//@ [without_names]compile-flags: --check-cfg=cfg(any()) -Z unstable-options
+//@ [empty_cfg]compile-flags: --check-cfg=cfg()
+//@ [without_names]compile-flags: --check-cfg=cfg(any())
 
 #[cfg(test = "value")]
 //~^ WARNING unexpected `cfg` condition value
diff --git a/tests/ui/check-cfg/invalid-arguments.rs b/tests/ui/check-cfg/invalid-arguments.rs
index bdcc202443b..84087a16e80 100644
--- a/tests/ui/check-cfg/invalid-arguments.rs
+++ b/tests/ui/check-cfg/invalid-arguments.rs
@@ -9,7 +9,6 @@
 //@ revisions: mixed_values_any mixed_any any_values giberich unterminated
 //@ revisions: none_not_empty cfg_none
 //
-//@ compile-flags: -Z unstable-options
 //@ [anything_else]compile-flags: --check-cfg=anything_else(...)
 //@ [string_for_name_1]compile-flags: --check-cfg=cfg("NOT_IDENT")
 //@ [string_for_name_2]compile-flags: --check-cfg=cfg(foo,"NOT_IDENT",bar)
diff --git a/tests/ui/check-cfg/mix.rs b/tests/ui/check-cfg/mix.rs
index 69156ab6763..ab8a180bc6f 100644
--- a/tests/ui/check-cfg/mix.rs
+++ b/tests/ui/check-cfg/mix.rs
@@ -3,7 +3,7 @@
 // we correctly lint on the `cfg!` macro and `cfg_attr` attribute.
 //
 //@ check-pass
-//@ compile-flags: --cfg feature="bar" --cfg unknown_name -Z unstable-options
+//@ compile-flags: --cfg feature="bar" --cfg unknown_name
 //@ compile-flags: --check-cfg=cfg(feature,values("foo"))
 
 #[cfg(windows)]
diff --git a/tests/ui/check-cfg/no-expected-values.empty.stderr b/tests/ui/check-cfg/no-expected-values.empty.stderr
index 0c0dbe9bac6..65827efdd39 100644
--- a/tests/ui/check-cfg/no-expected-values.empty.stderr
+++ b/tests/ui/check-cfg/no-expected-values.empty.stderr
@@ -1,5 +1,5 @@
 warning: unexpected `cfg` condition value: `foo`
-  --> $DIR/no-expected-values.rs:11:7
+  --> $DIR/no-expected-values.rs:10:7
    |
 LL | #[cfg(feature = "foo")]
    |       ^^^^^^^--------
@@ -12,7 +12,7 @@ LL | #[cfg(feature = "foo")]
    = note: `#[warn(unexpected_cfgs)]` on by default
 
 warning: unexpected `cfg` condition value: `foo`
-  --> $DIR/no-expected-values.rs:15:7
+  --> $DIR/no-expected-values.rs:14:7
    |
 LL | #[cfg(test = "foo")]
    |       ^^^^--------
diff --git a/tests/ui/check-cfg/no-expected-values.mixed.stderr b/tests/ui/check-cfg/no-expected-values.mixed.stderr
index 0c0dbe9bac6..65827efdd39 100644
--- a/tests/ui/check-cfg/no-expected-values.mixed.stderr
+++ b/tests/ui/check-cfg/no-expected-values.mixed.stderr
@@ -1,5 +1,5 @@
 warning: unexpected `cfg` condition value: `foo`
-  --> $DIR/no-expected-values.rs:11:7
+  --> $DIR/no-expected-values.rs:10:7
    |
 LL | #[cfg(feature = "foo")]
    |       ^^^^^^^--------
@@ -12,7 +12,7 @@ LL | #[cfg(feature = "foo")]
    = note: `#[warn(unexpected_cfgs)]` on by default
 
 warning: unexpected `cfg` condition value: `foo`
-  --> $DIR/no-expected-values.rs:15:7
+  --> $DIR/no-expected-values.rs:14:7
    |
 LL | #[cfg(test = "foo")]
    |       ^^^^--------
diff --git a/tests/ui/check-cfg/no-expected-values.rs b/tests/ui/check-cfg/no-expected-values.rs
index a80f9ec9776..42e7f45fa7a 100644
--- a/tests/ui/check-cfg/no-expected-values.rs
+++ b/tests/ui/check-cfg/no-expected-values.rs
@@ -2,7 +2,6 @@
 //
 //@ check-pass
 //@ revisions: simple mixed empty
-//@ compile-flags: -Z unstable-options
 //@ compile-flags: --check-cfg=cfg(values,simple,mixed,empty)
 //@ [simple]compile-flags: --check-cfg=cfg(test) --check-cfg=cfg(feature)
 //@ [mixed]compile-flags: --check-cfg=cfg(test,feature)
diff --git a/tests/ui/check-cfg/no-expected-values.simple.stderr b/tests/ui/check-cfg/no-expected-values.simple.stderr
index 0c0dbe9bac6..65827efdd39 100644
--- a/tests/ui/check-cfg/no-expected-values.simple.stderr
+++ b/tests/ui/check-cfg/no-expected-values.simple.stderr
@@ -1,5 +1,5 @@
 warning: unexpected `cfg` condition value: `foo`
-  --> $DIR/no-expected-values.rs:11:7
+  --> $DIR/no-expected-values.rs:10:7
    |
 LL | #[cfg(feature = "foo")]
    |       ^^^^^^^--------
@@ -12,7 +12,7 @@ LL | #[cfg(feature = "foo")]
    = note: `#[warn(unexpected_cfgs)]` on by default
 
 warning: unexpected `cfg` condition value: `foo`
-  --> $DIR/no-expected-values.rs:15:7
+  --> $DIR/no-expected-values.rs:14:7
    |
 LL | #[cfg(test = "foo")]
    |       ^^^^--------
diff --git a/tests/ui/check-cfg/order-independant.rs b/tests/ui/check-cfg/order-independant.rs
index 9ac96d0b15b..671d2e764d3 100644
--- a/tests/ui/check-cfg/order-independant.rs
+++ b/tests/ui/check-cfg/order-independant.rs
@@ -1,9 +1,7 @@
 //@ check-pass
 //
 //@ revisions: values_before values_after
-//@ compile-flags: -Z unstable-options
 //@ compile-flags: --check-cfg=cfg(values_before,values_after)
-//
 //@ [values_before]compile-flags: --check-cfg=cfg(a,values("b")) --check-cfg=cfg(a)
 //@ [values_after]compile-flags: --check-cfg=cfg(a) --check-cfg=cfg(a,values("b"))
 
diff --git a/tests/ui/check-cfg/order-independant.values_after.stderr b/tests/ui/check-cfg/order-independant.values_after.stderr
index d1de26ba303..2be28be39a7 100644
--- a/tests/ui/check-cfg/order-independant.values_after.stderr
+++ b/tests/ui/check-cfg/order-independant.values_after.stderr
@@ -1,5 +1,5 @@
 warning: unexpected `cfg` condition value: `unk`
-  --> $DIR/order-independant.rs:13:7
+  --> $DIR/order-independant.rs:11:7
    |
 LL | #[cfg(a = "unk")]
    |       ^^^^^^^^^
diff --git a/tests/ui/check-cfg/order-independant.values_before.stderr b/tests/ui/check-cfg/order-independant.values_before.stderr
index d1de26ba303..2be28be39a7 100644
--- a/tests/ui/check-cfg/order-independant.values_before.stderr
+++ b/tests/ui/check-cfg/order-independant.values_before.stderr
@@ -1,5 +1,5 @@
 warning: unexpected `cfg` condition value: `unk`
-  --> $DIR/order-independant.rs:13:7
+  --> $DIR/order-independant.rs:11:7
    |
 LL | #[cfg(a = "unk")]
    |       ^^^^^^^^^
diff --git a/tests/ui/check-cfg/stmt-no-ice.rs b/tests/ui/check-cfg/stmt-no-ice.rs
index 8a447ade068..866a5836db0 100644
--- a/tests/ui/check-cfg/stmt-no-ice.rs
+++ b/tests/ui/check-cfg/stmt-no-ice.rs
@@ -1,7 +1,7 @@
 // This test checks that there is no ICE with this code
 //
 //@ check-pass
-//@ compile-flags:--check-cfg=cfg() -Z unstable-options
+//@ compile-flags:--check-cfg=cfg()
 
 fn main() {
     #[cfg(crossbeam_loom)]
diff --git a/tests/ui/check-cfg/unexpected-cfg-name.rs b/tests/ui/check-cfg/unexpected-cfg-name.rs
index 5ea9f560ee4..365c29d10fb 100644
--- a/tests/ui/check-cfg/unexpected-cfg-name.rs
+++ b/tests/ui/check-cfg/unexpected-cfg-name.rs
@@ -1,7 +1,7 @@
 // Check warning for unexpected configuration name
 //
 //@ check-pass
-//@ compile-flags: --check-cfg=cfg() -Z unstable-options
+//@ compile-flags: --check-cfg=cfg()
 
 #[cfg(widnows)]
 //~^ WARNING unexpected `cfg` condition name
diff --git a/tests/ui/check-cfg/unexpected-cfg-value.rs b/tests/ui/check-cfg/unexpected-cfg-value.rs
index a4a10e503be..583cf40c485 100644
--- a/tests/ui/check-cfg/unexpected-cfg-value.rs
+++ b/tests/ui/check-cfg/unexpected-cfg-value.rs
@@ -1,7 +1,7 @@
 // Check for unexpected configuration value in the code.
 //
 //@ check-pass
-//@ compile-flags: --cfg=feature="rand" -Z unstable-options
+//@ compile-flags: --cfg=feature="rand"
 //@ compile-flags: --check-cfg=cfg(feature,values("serde","full"))
 
 #[cfg(feature = "sedre")]
diff --git a/tests/ui/check-cfg/unknown-values.rs b/tests/ui/check-cfg/unknown-values.rs
index 61ea82871b2..7b2b00fe9d4 100644
--- a/tests/ui/check-cfg/unknown-values.rs
+++ b/tests/ui/check-cfg/unknown-values.rs
@@ -2,7 +2,6 @@
 //
 //@ check-pass
 //@ revisions: simple mixed with_values
-//@ compile-flags: -Z unstable-options
 //@ compile-flags: --check-cfg=cfg(simple,mixed,with_values)
 //@ [simple]compile-flags: --check-cfg=cfg(foo,values(any()))
 //@ [mixed]compile-flags: --check-cfg=cfg(foo) --check-cfg=cfg(foo,values(any()))
diff --git a/tests/ui/check-cfg/values-none.explicit.stderr b/tests/ui/check-cfg/values-none.explicit.stderr
index a025ff441b7..c14cde94005 100644
--- a/tests/ui/check-cfg/values-none.explicit.stderr
+++ b/tests/ui/check-cfg/values-none.explicit.stderr
@@ -1,5 +1,5 @@
 warning: unexpected `cfg` condition value: `too`
-  --> $DIR/values-none.rs:11:7
+  --> $DIR/values-none.rs:10:7
    |
 LL | #[cfg(foo = "too")]
    |       ^^^--------
@@ -12,7 +12,7 @@ LL | #[cfg(foo = "too")]
    = note: `#[warn(unexpected_cfgs)]` on by default
 
 warning: unexpected `cfg` condition value: `bar`
-  --> $DIR/values-none.rs:16:7
+  --> $DIR/values-none.rs:15:7
    |
 LL | #[cfg(foo = "bar")]
    |       ^^^--------
diff --git a/tests/ui/check-cfg/values-none.implicit.stderr b/tests/ui/check-cfg/values-none.implicit.stderr
index a025ff441b7..c14cde94005 100644
--- a/tests/ui/check-cfg/values-none.implicit.stderr
+++ b/tests/ui/check-cfg/values-none.implicit.stderr
@@ -1,5 +1,5 @@
 warning: unexpected `cfg` condition value: `too`
-  --> $DIR/values-none.rs:11:7
+  --> $DIR/values-none.rs:10:7
    |
 LL | #[cfg(foo = "too")]
    |       ^^^--------
@@ -12,7 +12,7 @@ LL | #[cfg(foo = "too")]
    = note: `#[warn(unexpected_cfgs)]` on by default
 
 warning: unexpected `cfg` condition value: `bar`
-  --> $DIR/values-none.rs:16:7
+  --> $DIR/values-none.rs:15:7
    |
 LL | #[cfg(foo = "bar")]
    |       ^^^--------
diff --git a/tests/ui/check-cfg/values-none.rs b/tests/ui/check-cfg/values-none.rs
index 6a68020e418..bd9c0255b7d 100644
--- a/tests/ui/check-cfg/values-none.rs
+++ b/tests/ui/check-cfg/values-none.rs
@@ -1,7 +1,6 @@
 //@ check-pass
 //
 //@ revisions: explicit implicit
-//@ compile-flags: -Zunstable-options
 //@ [explicit]compile-flags: --check-cfg=cfg(foo,values(none()))
 //@ [implicit]compile-flags: --check-cfg=cfg(foo)
 //@ [simple]  compile-flags: --check-cfg=cfg(foo,values(none(),"too"))
diff --git a/tests/ui/check-cfg/values-target-json.rs b/tests/ui/check-cfg/values-target-json.rs
index afe6e0aaffd..f3a27043e67 100644
--- a/tests/ui/check-cfg/values-target-json.rs
+++ b/tests/ui/check-cfg/values-target-json.rs
@@ -2,7 +2,7 @@
 //
 //@ check-pass
 //@ needs-llvm-components: x86
-//@ compile-flags: --crate-type=lib --check-cfg=cfg() --target={{src-base}}/check-cfg/my-awesome-platform.json -Z unstable-options
+//@ compile-flags: --crate-type=lib --check-cfg=cfg() --target={{src-base}}/check-cfg/my-awesome-platform.json
 
 #![feature(lang_items, no_core, auto_traits)]
 #![no_core]
diff --git a/tests/ui/check-cfg/well-known-names.rs b/tests/ui/check-cfg/well-known-names.rs
index a0feee4225a..c277b84d9bd 100644
--- a/tests/ui/check-cfg/well-known-names.rs
+++ b/tests/ui/check-cfg/well-known-names.rs
@@ -1,7 +1,7 @@
 // This test checks that we lint on non well known names and that we don't lint on well known names
 //
 //@ check-pass
-//@ compile-flags: --check-cfg=cfg() -Z unstable-options
+//@ compile-flags: --check-cfg=cfg()
 
 #[cfg(target_oz = "linux")]
 //~^ WARNING unexpected `cfg` condition name
diff --git a/tests/ui/check-cfg/well-known-values.rs b/tests/ui/check-cfg/well-known-values.rs
index 2758a793538..4c010a62d21 100644
--- a/tests/ui/check-cfg/well-known-values.rs
+++ b/tests/ui/check-cfg/well-known-values.rs
@@ -5,7 +5,7 @@
 // values since the suggestion shows them.
 //
 //@ check-pass
-//@ compile-flags: --check-cfg=cfg() -Z unstable-options
+//@ compile-flags: --check-cfg=cfg()
 //@ compile-flags: -Zcheck-cfg-all-expected
 
 #![feature(cfg_overflow_checks)]
diff --git a/tests/ui/feature-gates/feature-gate-check-cfg.rs b/tests/ui/feature-gates/feature-gate-check-cfg.rs
deleted file mode 100644
index 1e0106aa748..00000000000
--- a/tests/ui/feature-gates/feature-gate-check-cfg.rs
+++ /dev/null
@@ -1,3 +0,0 @@
-//@ compile-flags: --check-cfg "cfg()"
-
-fn main() {}
diff --git a/tests/ui/feature-gates/feature-gate-check-cfg.stderr b/tests/ui/feature-gates/feature-gate-check-cfg.stderr
deleted file mode 100644
index 9b27c2bc058..00000000000
--- a/tests/ui/feature-gates/feature-gate-check-cfg.stderr
+++ /dev/null
@@ -1,2 +0,0 @@
-error: the `-Z unstable-options` flag must also be passed to enable the flag `check-cfg`
-