Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

23 files changed, 0 insertions, 435 deletions

diff --git a/src/test/ui/linkage-attr/auxiliary/def_colliding_external.rs b/src/test/ui/linkage-attr/auxiliary/def_colliding_external.rs
deleted file mode 100644
index 60b55b3e2..000000000
--- a/src/test/ui/linkage-attr/auxiliary/def_colliding_external.rs
+++ /dev/null
@@ -1,7 +0,0 @@
-#![feature(linkage)]
-#![crate_type = "lib"]
-
-extern "C" {
-    #[linkage = "external"]
-    pub static collision: *const i32;
-}
diff --git a/src/test/ui/linkage-attr/auxiliary/def_external.rs b/src/test/ui/linkage-attr/auxiliary/def_external.rs
deleted file mode 100644
index 2300930e5..000000000
--- a/src/test/ui/linkage-attr/auxiliary/def_external.rs
+++ /dev/null
@@ -1,5 +0,0 @@
-#![feature(linkage)]
-#![crate_type = "lib"]
-
-#[linkage="external"]
-pub static EXTERN: u32 = 0;
diff --git a/src/test/ui/linkage-attr/auxiliary/link-cfg-works-transitive-dylib.rs b/src/test/ui/linkage-attr/auxiliary/link-cfg-works-transitive-dylib.rs
deleted file mode 100644
index 0d927117d..000000000
--- a/src/test/ui/linkage-attr/auxiliary/link-cfg-works-transitive-dylib.rs
+++ /dev/null
@@ -1,4 +0,0 @@
-#![feature(link_cfg)]
-
-#[link(name = "foo", cfg(foo))]
-extern "C" {}
diff --git a/src/test/ui/linkage-attr/auxiliary/link-cfg-works-transitive-rlib.rs b/src/test/ui/linkage-attr/auxiliary/link-cfg-works-transitive-rlib.rs
deleted file mode 100644
index 0a296f0b2..000000000
--- a/src/test/ui/linkage-attr/auxiliary/link-cfg-works-transitive-rlib.rs
+++ /dev/null
@@ -1,7 +0,0 @@
-// no-prefer-dynamic
-
-#![feature(link_cfg)]
-#![crate_type = "rlib"]
-
-#[link(name = "foo", cfg(foo))]
-extern "C" {}
diff --git a/src/test/ui/linkage-attr/auxiliary/linkage1.rs b/src/test/ui/linkage-attr/auxiliary/linkage1.rs
deleted file mode 100644
index e87ce5e4d..000000000
--- a/src/test/ui/linkage-attr/auxiliary/linkage1.rs
+++ /dev/null
@@ -1,4 +0,0 @@
-#[no_mangle]
-pub static foo: isize = 3;
-
-pub fn bar() {}
diff --git a/src/test/ui/linkage-attr/issue-10755.rs b/src/test/ui/linkage-attr/issue-10755.rs
deleted file mode 100644
index afd2dc46c..000000000
--- a/src/test/ui/linkage-attr/issue-10755.rs
+++ /dev/null
@@ -1,10 +0,0 @@
-// build-fail
-// dont-check-compiler-stderr
-// compile-flags: -C linker=llllll -C linker-flavor=ld
-// error-pattern: `llllll`
-
-// Before, the error-pattern checked for "not found". On WSL with appendWindowsPath=true, running
-// in invalid command returns a PermissionDenied instead.
-
-fn main() {
-}
diff --git a/src/test/ui/linkage-attr/link-attr-validation-early.rs b/src/test/ui/linkage-attr/link-attr-validation-early.rs
deleted file mode 100644
index b9a835fb5..000000000
--- a/src/test/ui/linkage-attr/link-attr-validation-early.rs
+++ /dev/null
@@ -1,8 +0,0 @@
-// Top-level ill-formed
-#[link] //~ ERROR attribute must be of the form
-        //~| WARN this was previously accepted
-#[link = "foo"] //~ ERROR attribute must be of the form
-                //~| WARN this was previously accepted
-extern "C" {}
-
-fn main() {}
diff --git a/src/test/ui/linkage-attr/link-attr-validation-early.stderr b/src/test/ui/linkage-attr/link-attr-validation-early.stderr
deleted file mode 100644
index 24ad9d825..000000000
--- a/src/test/ui/linkage-attr/link-attr-validation-early.stderr
+++ /dev/null
@@ -1,21 +0,0 @@
-error: attribute must be of the form `#[link(name = "...", /*opt*/ kind = "dylib|static|...", /*opt*/ wasm_import_module = "...", /*opt*/ import_name_type = "decorated|noprefix|undecorated")]`
-  --> $DIR/link-attr-validation-early.rs:2:1
-   |
-LL | #[link]
-   | ^^^^^^^
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #57571 <https://github.com/rust-lang/rust/issues/57571>
-   = note: `#[deny(ill_formed_attribute_input)]` on by default
-
-error: attribute must be of the form `#[link(name = "...", /*opt*/ kind = "dylib|static|...", /*opt*/ wasm_import_module = "...", /*opt*/ import_name_type = "decorated|noprefix|undecorated")]`
-  --> $DIR/link-attr-validation-early.rs:4:1
-   |
-LL | #[link = "foo"]
-   | ^^^^^^^^^^^^^^^
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #57571 <https://github.com/rust-lang/rust/issues/57571>
-
-error: aborting due to 2 previous errors
-
diff --git a/src/test/ui/linkage-attr/link-attr-validation-late.rs b/src/test/ui/linkage-attr/link-attr-validation-late.rs
deleted file mode 100644
index 34f720dd2..000000000
--- a/src/test/ui/linkage-attr/link-attr-validation-late.rs
+++ /dev/null
@@ -1,39 +0,0 @@
-#![feature(link_cfg)]
-
-// Top-level ill-formed
-#[link(name = "...", "literal")] //~ ERROR unexpected `#[link]` argument
-#[link(name = "...", unknown)] //~ ERROR unexpected `#[link]` argument
-extern "C" {}
-
-// Duplicate arguments
-#[link(name = "foo", name = "bar")] //~ ERROR multiple `name` arguments
-#[link(name = "...", kind = "dylib", kind = "bar")] //~ ERROR multiple `kind` arguments
-#[link(name = "...", modifiers = "+verbatim", modifiers = "bar")] //~ ERROR multiple `modifiers` arguments
-#[link(name = "...", cfg(FALSE), cfg(FALSE))] //~ ERROR multiple `cfg` arguments
-#[link(wasm_import_module = "foo", wasm_import_module = "bar")] //~ ERROR multiple `wasm_import_module` arguments
-extern "C" {}
-
-// Ill-formed arguments
-#[link(name)] //~ ERROR link name must be of the form `name = "string"`
-              //~| ERROR `#[link]` attribute requires a `name = "string"` argument
-#[link(name())] //~ ERROR link name must be of the form `name = "string"`
-              //~| ERROR `#[link]` attribute requires a `name = "string"` argument
-#[link(name = "...", kind)] //~ ERROR link kind must be of the form `kind = "string"`
-#[link(name = "...", kind())] //~ ERROR link kind must be of the form `kind = "string"`
-#[link(name = "...", modifiers)] //~ ERROR link modifiers must be of the form `modifiers = "string"`
-#[link(name = "...", modifiers())] //~ ERROR link modifiers must be of the form `modifiers = "string"`
-#[link(name = "...", cfg)] //~ ERROR link cfg must be of the form `cfg(/* predicate */)`
-#[link(name = "...", cfg = "literal")] //~ ERROR link cfg must be of the form `cfg(/* predicate */)`
-#[link(name = "...", cfg("literal"))] //~ ERROR link cfg must have a single predicate argument
-#[link(name = "...", wasm_import_module)] //~ ERROR wasm import module must be of the form `wasm_import_module = "string"`
-#[link(name = "...", wasm_import_module())] //~ ERROR wasm import module must be of the form `wasm_import_module = "string"`
-extern "C" {}
-
-// Basic modifier validation
-#[link(name = "...", modifiers = "")] //~ ERROR invalid linking modifier syntax, expected '+' or '-' prefix
-#[link(name = "...", modifiers = "no-plus-minus")] //~ ERROR invalid linking modifier syntax, expected '+' or '-' prefix
-#[link(name = "...", modifiers = "+unknown")] //~ ERROR unknown linking modifier `unknown`
-#[link(name = "...", modifiers = "+verbatim,+verbatim")] //~ ERROR multiple `verbatim` modifiers
-extern "C" {}
-
-fn main() {}
diff --git a/src/test/ui/linkage-attr/link-attr-validation-late.stderr b/src/test/ui/linkage-attr/link-attr-validation-late.stderr
deleted file mode 100644
index 1ad5fbaf7..000000000
--- a/src/test/ui/linkage-attr/link-attr-validation-late.stderr
+++ /dev/null
@@ -1,147 +0,0 @@
-error: unexpected `#[link]` argument, expected one of: name, kind, modifiers, cfg, wasm_import_module, import_name_type
-  --> $DIR/link-attr-validation-late.rs:4:22
-   |
-LL | #[link(name = "...", "literal")]
-   |                      ^^^^^^^^^
-
-error: unexpected `#[link]` argument, expected one of: name, kind, modifiers, cfg, wasm_import_module, import_name_type
-  --> $DIR/link-attr-validation-late.rs:5:22
-   |
-LL | #[link(name = "...", unknown)]
-   |                      ^^^^^^^
-
-error: multiple `name` arguments in a single `#[link]` attribute
-  --> $DIR/link-attr-validation-late.rs:9:22
-   |
-LL | #[link(name = "foo", name = "bar")]
-   |                      ^^^^^^^^^^^^
-
-error: multiple `kind` arguments in a single `#[link]` attribute
-  --> $DIR/link-attr-validation-late.rs:10:38
-   |
-LL | #[link(name = "...", kind = "dylib", kind = "bar")]
-   |                                      ^^^^^^^^^^^^
-
-error: multiple `modifiers` arguments in a single `#[link]` attribute
-  --> $DIR/link-attr-validation-late.rs:11:47
-   |
-LL | #[link(name = "...", modifiers = "+verbatim", modifiers = "bar")]
-   |                                               ^^^^^^^^^^^^^^^^^
-
-error: multiple `cfg` arguments in a single `#[link]` attribute
-  --> $DIR/link-attr-validation-late.rs:12:34
-   |
-LL | #[link(name = "...", cfg(FALSE), cfg(FALSE))]
-   |                                  ^^^^^^^^^^
-
-error: multiple `wasm_import_module` arguments in a single `#[link]` attribute
-  --> $DIR/link-attr-validation-late.rs:13:36
-   |
-LL | #[link(wasm_import_module = "foo", wasm_import_module = "bar")]
-   |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-error: link name must be of the form `name = "string"`
-  --> $DIR/link-attr-validation-late.rs:17:8
-   |
-LL | #[link(name)]
-   |        ^^^^
-
-error[E0459]: `#[link]` attribute requires a `name = "string"` argument
-  --> $DIR/link-attr-validation-late.rs:17:1
-   |
-LL | #[link(name)]
-   | ^^^^^^^^^^^^^ missing `name` argument
-
-error: link name must be of the form `name = "string"`
-  --> $DIR/link-attr-validation-late.rs:19:8
-   |
-LL | #[link(name())]
-   |        ^^^^^^
-
-error[E0459]: `#[link]` attribute requires a `name = "string"` argument
-  --> $DIR/link-attr-validation-late.rs:19:1
-   |
-LL | #[link(name())]
-   | ^^^^^^^^^^^^^^^ missing `name` argument
-
-error: link kind must be of the form `kind = "string"`
-  --> $DIR/link-attr-validation-late.rs:21:22
-   |
-LL | #[link(name = "...", kind)]
-   |                      ^^^^
-
-error: link kind must be of the form `kind = "string"`
-  --> $DIR/link-attr-validation-late.rs:22:22
-   |
-LL | #[link(name = "...", kind())]
-   |                      ^^^^^^
-
-error: link modifiers must be of the form `modifiers = "string"`
-  --> $DIR/link-attr-validation-late.rs:23:22
-   |
-LL | #[link(name = "...", modifiers)]
-   |                      ^^^^^^^^^
-
-error: link modifiers must be of the form `modifiers = "string"`
-  --> $DIR/link-attr-validation-late.rs:24:22
-   |
-LL | #[link(name = "...", modifiers())]
-   |                      ^^^^^^^^^^^
-
-error: link cfg must be of the form `cfg(/* predicate */)`
-  --> $DIR/link-attr-validation-late.rs:25:22
-   |
-LL | #[link(name = "...", cfg)]
-   |                      ^^^
-
-error: link cfg must be of the form `cfg(/* predicate */)`
-  --> $DIR/link-attr-validation-late.rs:26:22
-   |
-LL | #[link(name = "...", cfg = "literal")]
-   |                      ^^^^^^^^^^^^^^^
-
-error: link cfg must have a single predicate argument
-  --> $DIR/link-attr-validation-late.rs:27:22
-   |
-LL | #[link(name = "...", cfg("literal"))]
-   |                      ^^^^^^^^^^^^^^
-
-error: wasm import module must be of the form `wasm_import_module = "string"`
-  --> $DIR/link-attr-validation-late.rs:28:22
-   |
-LL | #[link(name = "...", wasm_import_module)]
-   |                      ^^^^^^^^^^^^^^^^^^
-
-error: wasm import module must be of the form `wasm_import_module = "string"`
-  --> $DIR/link-attr-validation-late.rs:29:22
-   |
-LL | #[link(name = "...", wasm_import_module())]
-   |                      ^^^^^^^^^^^^^^^^^^^^
-
-error: invalid linking modifier syntax, expected '+' or '-' prefix before one of: bundle, verbatim, whole-archive, as-needed
-  --> $DIR/link-attr-validation-late.rs:33:34
-   |
-LL | #[link(name = "...", modifiers = "")]
-   |                                  ^^
-
-error: invalid linking modifier syntax, expected '+' or '-' prefix before one of: bundle, verbatim, whole-archive, as-needed
-  --> $DIR/link-attr-validation-late.rs:34:34
-   |
-LL | #[link(name = "...", modifiers = "no-plus-minus")]
-   |                                  ^^^^^^^^^^^^^^^
-
-error: unknown linking modifier `unknown`, expected one of: bundle, verbatim, whole-archive, as-needed
-  --> $DIR/link-attr-validation-late.rs:35:34
-   |
-LL | #[link(name = "...", modifiers = "+unknown")]
-   |                                  ^^^^^^^^^^
-
-error: multiple `verbatim` modifiers in a single `modifiers` argument
-  --> $DIR/link-attr-validation-late.rs:36:34
-   |
-LL | #[link(name = "...", modifiers = "+verbatim,+verbatim")]
-   |                                  ^^^^^^^^^^^^^^^^^^^^^
-
-error: aborting due to 24 previous errors
-
-For more information about this error, try `rustc --explain E0459`.
diff --git a/src/test/ui/linkage-attr/link-cfg-works.rs b/src/test/ui/linkage-attr/link-cfg-works.rs
deleted file mode 100644
index 254091ff2..000000000
--- a/src/test/ui/linkage-attr/link-cfg-works.rs
+++ /dev/null
@@ -1,13 +0,0 @@
-// run-pass
-// aux-build:link-cfg-works-transitive-rlib.rs
-// aux-build:link-cfg-works-transitive-dylib.rs
-
-#![feature(link_cfg)]
-
-extern crate link_cfg_works_transitive_dylib;
-extern crate link_cfg_works_transitive_rlib;
-
-#[link(name = "foo", cfg(foo))]
-extern "C" {}
-
-fn main() {}
diff --git a/src/test/ui/linkage-attr/linkage-detect-extern-generated-name-collision.rs b/src/test/ui/linkage-attr/linkage-detect-extern-generated-name-collision.rs
deleted file mode 100644
index 3a0910658..000000000
--- a/src/test/ui/linkage-attr/linkage-detect-extern-generated-name-collision.rs
+++ /dev/null
@@ -1,24 +0,0 @@
-// rust-lang/rust#61232: We used to ICE when trying to detect a
-// collision on the symbol generated for the external linkage item in
-// an extern crate.
-
-// build-fail
-// aux-build:def_colliding_external.rs
-// FIXME(#83838) codegen-units=1 triggers llvm asserts
-// compile-flags: -Ccodegen-units=16
-
-extern crate def_colliding_external as dep1;
-
-#[no_mangle]
-pub static _rust_extern_with_linkage_collision: i32 = 0;
-
-mod dep2 {
-    #[no_mangle]
-    pub static collision: usize = 0;
-}
-
-fn main() {
-    unsafe {
-       println!("{:p}", &dep1::collision);
-    }
-}
diff --git a/src/test/ui/linkage-attr/linkage-detect-extern-generated-name-collision.stderr b/src/test/ui/linkage-attr/linkage-detect-extern-generated-name-collision.stderr
deleted file mode 100644
index 06a070822..000000000
--- a/src/test/ui/linkage-attr/linkage-detect-extern-generated-name-collision.stderr
+++ /dev/null
@@ -1,8 +0,0 @@
-error: symbol `collision` is already defined
-  --> $DIR/auxiliary/def_colliding_external.rs:6:5
-   |
-LL |     pub static collision: *const i32;
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-error: aborting due to previous error
-
diff --git a/src/test/ui/linkage-attr/linkage-detect-local-generated-name-collision.rs b/src/test/ui/linkage-attr/linkage-detect-local-generated-name-collision.rs
deleted file mode 100644
index c1df9ccef..000000000
--- a/src/test/ui/linkage-attr/linkage-detect-local-generated-name-collision.rs
+++ /dev/null
@@ -1,26 +0,0 @@
-// build-fail
-// FIXME(#83838) codegen-units=1 triggers llvm asserts
-// compile-flags: -Ccodegen-units=16
-#![feature(linkage)]
-
-mod dep1 {
-    extern "C" {
-        #[linkage = "external"]
-        #[no_mangle]
-        pub static collision: *const i32; //~ ERROR symbol `collision` is already defined
-    }
-}
-
-#[no_mangle]
-pub static _rust_extern_with_linkage_collision: i32 = 0;
-
-mod dep2 {
-    #[no_mangle]
-    pub static collision: usize = 0;
-}
-
-fn main() {
-    unsafe {
-        println!("{:p}", &dep1::collision);
-    }
-}
diff --git a/src/test/ui/linkage-attr/linkage-detect-local-generated-name-collision.stderr b/src/test/ui/linkage-attr/linkage-detect-local-generated-name-collision.stderr
deleted file mode 100644
index e0be1ac21..000000000
--- a/src/test/ui/linkage-attr/linkage-detect-local-generated-name-collision.stderr
+++ /dev/null
@@ -1,8 +0,0 @@
-error: symbol `collision` is already defined
-  --> $DIR/linkage-detect-local-generated-name-collision.rs:10:9
-   |
-LL |         pub static collision: *const i32;
-   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-error: aborting due to previous error
-
diff --git a/src/test/ui/linkage-attr/linkage-import.rs b/src/test/ui/linkage-attr/linkage-import.rs
deleted file mode 100644
index f754ddc6e..000000000
--- a/src/test/ui/linkage-attr/linkage-import.rs
+++ /dev/null
@@ -1,8 +0,0 @@
-// build-pass
-// aux-build:def_external.rs
-
-extern crate def_external as dep;
-
-fn main() {
-    println!("{:p}", &dep::EXTERN);
-}
diff --git a/src/test/ui/linkage-attr/linkage1.rs b/src/test/ui/linkage-attr/linkage1.rs
deleted file mode 100644
index deab7a251..000000000
--- a/src/test/ui/linkage-attr/linkage1.rs
+++ /dev/null
@@ -1,32 +0,0 @@
-// run-pass
-// ignore-windows
-// ignore-macos
-// ignore-emscripten doesn't support this linkage
-// ignore-sgx weak linkage not permitted
-// aux-build:linkage1.rs
-
-#![feature(linkage)]
-
-extern crate linkage1 as other;
-
-extern "C" {
-    #[linkage = "extern_weak"]
-    static foo: *const isize;
-    #[linkage = "extern_weak"]
-    static something_that_should_never_exist: *mut isize;
-}
-
-fn main() {
-    // It appears that the --as-needed flag to linkers will not pull in a dynamic
-    // library unless it satisfies a non weak undefined symbol. The 'other' crate
-    // is compiled as a dynamic library where it would only be used for a
-    // weak-symbol as part of an executable, so the dynamic library would be
-    // discarded. By adding and calling `other::bar`, we get around this problem.
-    other::bar();
-
-    unsafe {
-        assert!(!foo.is_null());
-        assert_eq!(*foo, 3);
-        assert!(something_that_should_never_exist.is_null());
-    }
-}
diff --git a/src/test/ui/linkage-attr/linkage2.rs b/src/test/ui/linkage-attr/linkage2.rs
deleted file mode 100644
index aa42874f7..000000000
--- a/src/test/ui/linkage-attr/linkage2.rs
+++ /dev/null
@@ -1,13 +0,0 @@
-// check-fail
-
-#![feature(linkage)]
-
-extern "C" {
-    #[linkage = "extern_weak"]
-    static foo: i32;
-//~^ ERROR: invalid type for variable with `#[linkage]` attribute
-}
-
-fn main() {
-    println!("{}", unsafe { foo });
-}
diff --git a/src/test/ui/linkage-attr/linkage2.stderr b/src/test/ui/linkage-attr/linkage2.stderr
deleted file mode 100644
index 7265f711f..000000000
--- a/src/test/ui/linkage-attr/linkage2.stderr
+++ /dev/null
@@ -1,9 +0,0 @@
-error[E0791]: invalid type for variable with `#[linkage]` attribute
-  --> $DIR/linkage2.rs:7:5
-   |
-LL |     static foo: i32;
-   |     ^^^^^^^^^^^^^^^
-
-error: aborting due to previous error
-
-For more information about this error, try `rustc --explain E0791`.
diff --git a/src/test/ui/linkage-attr/linkage3.rs b/src/test/ui/linkage-attr/linkage3.rs
deleted file mode 100644
index 112eb1d3b..000000000
--- a/src/test/ui/linkage-attr/linkage3.rs
+++ /dev/null
@@ -1,17 +0,0 @@
-// FIXME https://github.com/rust-lang/rust/issues/59774
-
-// check-fail
-// normalize-stderr-test "thread.*panicked.*Metadata module not compiled.*\n" -> ""
-// normalize-stderr-test "note:.*RUST_BACKTRACE=1.*\n" -> ""
-
-#![feature(linkage)]
-
-extern "C" {
-    #[linkage = "foo"]
-    static foo: *const i32;
-//~^ ERROR: invalid linkage specified
-}
-
-fn main() {
-    println!("{:?}", unsafe { foo });
-}
diff --git a/src/test/ui/linkage-attr/linkage3.stderr b/src/test/ui/linkage-attr/linkage3.stderr
deleted file mode 100644
index f2579c6e8..000000000
--- a/src/test/ui/linkage-attr/linkage3.stderr
+++ /dev/null
@@ -1,8 +0,0 @@
-error: invalid linkage specified
-  --> $DIR/linkage3.rs:11:5
-   |
-LL |     static foo: *const i32;
-   |     ^^^^^^^^^^^^^^^^^^^^^^
-
-error: aborting due to previous error
-
diff --git a/src/test/ui/linkage-attr/linkage4.rs b/src/test/ui/linkage-attr/linkage4.rs
deleted file mode 100644
index 3b935f972..000000000
--- a/src/test/ui/linkage-attr/linkage4.rs
+++ /dev/null
@@ -1,5 +0,0 @@
-#[linkage = "external"]
-static foo: isize = 0;
-//~^^ ERROR: the `linkage` attribute is experimental and not portable
-
-fn main() {}
diff --git a/src/test/ui/linkage-attr/linkage4.stderr b/src/test/ui/linkage-attr/linkage4.stderr
deleted file mode 100644
index 30d4d2b7b..000000000
--- a/src/test/ui/linkage-attr/linkage4.stderr
+++ /dev/null
@@ -1,12 +0,0 @@
-error[E0658]: the `linkage` attribute is experimental and not portable across platforms
-  --> $DIR/linkage4.rs:1:1
-   |
-LL | #[linkage = "external"]
-   | ^^^^^^^^^^^^^^^^^^^^^^^
-   |
-   = note: see issue #29603 <https://github.com/rust-lang/rust/issues/29603> for more information
-   = help: add `#![feature(linkage)]` to the crate attributes to enable
-
-error: aborting due to previous error
-
-For more information about this error, try `rustc --explain E0658`.