Deny bare_trait_objects globally

2024-11-26 16:54:01 +00:00 · 2018-07-13 14:12:58 +09:00 · 2018-07-13 14:12:58 +09:00 · e098985939
commit e098985939
parent 4f1d4e4db6
52 changed files with 34 additions and 87 deletions
--- a/src/bootstrap/bin/rustc.rs
+++ b/src/bootstrap/bin/rustc.rs
@ -296,8 +296,9 @@ fn main() {
        cmd.arg("--color=always");
    }

-    if env::var_os("RUSTC_DENY_WARNINGS").is_some() {
+    if env::var_os("RUSTC_DENY_WARNINGS").is_some() && env::var_os("RUSTC_EXT_TOOL").is_none() {
        cmd.arg("-Dwarnings");
+        cmd.arg("-Dbare_trait_objects");
    }

    if verbose > 1 {
--- a/src/bootstrap/check.rs
+++ b/src/bootstrap/check.rs
@ -222,7 +222,8 @@ impl Step for Rustdoc {
                                           Mode::ToolRustc,
                                           target,
                                           "check",
-                                           "src/tools/rustdoc");
+                                           "src/tools/rustdoc",
+                                           false);

        let _folder = builder.fold_output(|| format!("stage{}-rustdoc", compiler.stage));
        println!("Checking rustdoc artifacts ({} -> {})", &compiler.host, target);
--- a/src/bootstrap/doc.rs
+++ b/src/bootstrap/doc.rs
@ -814,6 +814,7 @@ impl Step for Rustdoc {
            target,
            "doc",
            "src/tools/rustdoc",
+            false
        );

        cargo.env("RUSTDOCFLAGS", "--document-private-items");
--- a/src/bootstrap/test.rs
+++ b/src/bootstrap/test.rs
@ -286,7 +286,8 @@ impl Step for Rls {
                                                 Mode::ToolRustc,
                                                 host,
                                                 "test",
-                                                 "src/tools/rls");
+                                                 "src/tools/rls",
+                                                 true);

        // Don't build tests dynamically, just a pain to work with
        cargo.env("RUSTC_NO_PREFER_DYNAMIC", "1");
@ -341,7 +342,8 @@ impl Step for Rustfmt {
                                                 Mode::ToolRustc,
                                                 host,
                                                 "test",
-                                                 "src/tools/rustfmt");
+                                                 "src/tools/rustfmt",
+                                                 true);

        // Don't build tests dynamically, just a pain to work with
        cargo.env("RUSTC_NO_PREFER_DYNAMIC", "1");
@ -1739,7 +1741,8 @@ impl Step for CrateRustdoc {
                                                 Mode::ToolRustc,
                                                 target,
                                                 test_kind.subcommand(),
-                                                 "src/tools/rustdoc");
+                                                 "src/tools/rustdoc",
+                                                 false);
        if test_kind.subcommand() == "test" && !builder.fail_fast {
            cargo.arg("--no-fail-fast");
        }
--- a/src/bootstrap/tool.rs
+++ b/src/bootstrap/tool.rs
@ -115,7 +115,15 @@ impl Step for ToolBuild {
            _ => panic!("unexpected Mode for tool build")
        }

-        let mut cargo = prepare_tool_cargo(builder, compiler, self.mode, target, "build", path);
+        let mut cargo = prepare_tool_cargo(
+            builder,
+            compiler,
+            self.mode,
+            target,
+            "build",
+            path,
+            is_ext_tool,
+        );
        cargo.arg("--features").arg(self.extra_features.join(" "));

        let _folder = builder.fold_output(|| format!("stage{}-{}", compiler.stage, tool));
@ -238,6 +246,7 @@ pub fn prepare_tool_cargo(
    target: Interned<String>,
    command: &'static str,
    path: &'static str,
+    is_ext_tool: bool,
 ) -> Command {
    let mut cargo = builder.cargo(compiler, mode, target, command);
    let dir = builder.src.join(path);
@ -247,6 +256,10 @@ pub fn prepare_tool_cargo(
    // stages and such and it's just easier if they're not dynamically linked.
    cargo.env("RUSTC_NO_PREFER_DYNAMIC", "1");

+    if is_ext_tool {
+        cargo.env("RUSTC_EXT_TOOL", "1");
+    }
+
    if let Some(dir) = builder.openssl_install_dir(target) {
        cargo.env("OPENSSL_STATIC", "1");
        cargo.env("OPENSSL_DIR", dir);
@ -449,12 +462,15 @@ impl Step for Rustdoc {
            target: builder.config.build,
        });

-        let mut cargo = prepare_tool_cargo(builder,
-                                           build_compiler,
-                                           Mode::ToolRustc,
-                                           target,
-                                           "build",
-                                           "src/tools/rustdoc");
+        let mut cargo = prepare_tool_cargo(
+            builder,
+            build_compiler,
+            Mode::ToolRustc,
+            target,
+            "build",
+            "src/tools/rustdoc",
+            false,
+        );

        // Most tools don't get debuginfo, but rustdoc should.
        cargo.env("RUSTC_DEBUGINFO", builder.config.rust_debuginfo.to_string())
--- a/src/build_helper/lib.rs
+++ b/src/build_helper/lib.rs
@ -8,8 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.

-#![deny(bare_trait_objects)]
-
 use std::fs::File;
 use std::path::{Path, PathBuf};
 use std::process::{Command, Stdio};
--- a/src/liballoc/lib.rs
+++ b/src/liballoc/lib.rs
@ -72,7 +72,6 @@
       test(no_crate_inject, attr(allow(unused_variables), deny(warnings))))]
 #![no_std]
 #![needs_allocator]
-#![deny(bare_trait_objects)]
 #![deny(missing_debug_implementations)]

 #![cfg_attr(test, allow(deprecated))] // rand
--- a/src/liballoc_jemalloc/lib.rs
+++ b/src/liballoc_jemalloc/lib.rs
@ -10,7 +10,6 @@

 #![no_std]
 #![allow(unused_attributes)]
-#![deny(bare_trait_objects)]
 #![unstable(feature = "alloc_jemalloc",
            reason = "implementation detail of std, does not provide any public API",
            issue = "0")]
--- a/src/liballoc_system/lib.rs
+++ b/src/liballoc_system/lib.rs
@ -10,7 +10,6 @@

 #![no_std]
 #![allow(unused_attributes)]
-#![deny(bare_trait_objects)]
 #![unstable(feature = "alloc_system",
            reason = "this library is unlikely to be stabilized in its current \
                      form or name",
--- a/src/libarena/lib.rs
+++ b/src/libarena/lib.rs
@ -30,7 +30,6 @@
 #![cfg_attr(test, feature(test))]

 #![allow(deprecated)]
-#![deny(bare_trait_objects)]

 extern crate alloc;
 extern crate rustc_data_structures;
--- a/src/libcore/lib.rs
+++ b/src/libcore/lib.rs
@ -70,7 +70,6 @@
       test(attr(allow(dead_code, deprecated, unused_variables, unused_mut))))]

 #![no_core]
-#![deny(bare_trait_objects)]
 #![deny(missing_docs)]
 #![deny(missing_debug_implementations)]

--- a/src/libfmt_macros/lib.rs
+++ b/src/libfmt_macros/lib.rs
@ -14,8 +14,6 @@
 //! Parsing does not happen at runtime: structures of `std::fmt::rt` are
 //! generated instead.

-#![deny(bare_trait_objects)]
-
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
       html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
       html_root_url = "https://doc.rust-lang.org/nightly/",
--- a/src/libgraphviz/lib.rs
+++ b/src/libgraphviz/lib.rs
@ -283,8 +283,6 @@
 //!
 //! * [DOT language](http://www.graphviz.org/doc/info/lang.html)

-#![deny(bare_trait_objects)]
-
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
       html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
       html_root_url = "https://doc.rust-lang.org/nightly/",
--- a/src/libpanic_abort/lib.rs
+++ b/src/libpanic_abort/lib.rs
@ -21,7 +21,6 @@
       issue_tracker_base_url = "https://github.com/rust-lang/rust/issues/")]
 #![panic_runtime]
 #![allow(unused_features)]
-#![deny(bare_trait_objects)]

 #![feature(core_intrinsics)]
 #![feature(libc)]
--- a/src/libpanic_unwind/lib.rs
+++ b/src/libpanic_unwind/lib.rs
@ -22,7 +22,6 @@
 //! More documentation about each implementation can be found in the respective
 //! module.

-#![deny(bare_trait_objects)]
 #![no_std]
 #![unstable(feature = "panic_unwind", issue = "32837")]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
--- a/src/libproc_macro/lib.rs
+++ b/src/libproc_macro/lib.rs
@ -22,7 +22,6 @@
 //! See [the book](../book/first-edition/procedural-macros.html) for more.

 #![stable(feature = "proc_macro_lib", since = "1.15.0")]
-#![deny(bare_trait_objects)]
 #![deny(missing_docs)]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
       html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
--- a/src/libprofiler_builtins/lib.rs
+++ b/src/libprofiler_builtins/lib.rs
@ -15,5 +15,4 @@
            reason = "internal implementation detail of rustc right now",
            issue = "0")]
 #![allow(unused_features)]
-#![deny(bare_trait_objects)]
 #![feature(staged_api)]
--- a/src/librustc/lib.rs
+++ b/src/librustc/lib.rs
@ -36,8 +36,6 @@
 //!
 //! This API is completely unstable and subject to change.

-#![deny(bare_trait_objects)]
-
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
       html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
       html_root_url = "https://doc.rust-lang.org/nightly/")]
--- a/src/librustc_allocator/lib.rs
+++ b/src/librustc_allocator/lib.rs
@ -8,7 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.

-#![deny(bare_trait_objects)]
 #![feature(rustc_private)]

 #[macro_use] extern crate log;
--- a/src/librustc_apfloat/lib.rs
+++ b/src/librustc_apfloat/lib.rs
@ -40,8 +40,6 @@
 //!
 //! This API is completely unstable and subject to change.

-#![deny(bare_trait_objects)]
-
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
      html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
      html_root_url = "https://doc.rust-lang.org/nightly/")]
--- a/src/librustc_asan/lib.rs
+++ b/src/librustc_asan/lib.rs
@ -8,8 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.

-#![deny(bare_trait_objects)]
-
 #![sanitizer_runtime]
 #![feature(alloc_system)]
 #![feature(sanitizer_runtime)]
--- a/src/librustc_borrowck/lib.rs
+++ b/src/librustc_borrowck/lib.rs
@ -13,7 +13,6 @@
      html_root_url = "https://doc.rust-lang.org/nightly/")]

 #![allow(non_camel_case_types)]
-#![deny(bare_trait_objects)]

 #![feature(from_ref)]
 #![feature(quote)]
--- a/src/librustc_codegen_llvm/lib.rs
+++ b/src/librustc_codegen_llvm/lib.rs
@ -23,7 +23,6 @@
 #![feature(custom_attribute)]
 #![feature(fs_read_write)]
 #![allow(unused_attributes)]
-#![deny(bare_trait_objects)]
 #![feature(libc)]
 #![feature(quote)]
 #![feature(range_contains)]
--- a/src/librustc_codegen_utils/lib.rs
+++ b/src/librustc_codegen_utils/lib.rs
@ -20,7 +20,6 @@
 #![feature(box_syntax)]
 #![feature(custom_attribute)]
 #![allow(unused_attributes)]
-#![deny(bare_trait_objects)]
 #![feature(quote)]
 #![feature(rustc_diagnostic_macros)]

--- a/src/librustc_data_structures/lib.rs
+++ b/src/librustc_data_structures/lib.rs
@ -16,8 +16,6 @@
 //!
 //! This API is completely unstable and subject to change.

-#![deny(bare_trait_objects)]
-
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
      html_favicon_url = "https://www.rust-lang.org/favicon.ico",
      html_root_url = "https://doc.rust-lang.org/nightly/")]
--- a/src/librustc_driver/lib.rs
+++ b/src/librustc_driver/lib.rs
@ -14,8 +14,6 @@
 //!
 //! This API is completely unstable and subject to change.

-#![deny(bare_trait_objects)]
-
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
      html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
      html_root_url = "https://doc.rust-lang.org/nightly/")]
--- a/src/librustc_errors/lib.rs
+++ b/src/librustc_errors/lib.rs
@ -8,8 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.

-#![deny(bare_trait_objects)]
-
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
      html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
      html_root_url = "https://doc.rust-lang.org/nightly/")]
--- a/src/librustc_incremental/lib.rs
+++ b/src/librustc_incremental/lib.rs
@ -10,8 +10,6 @@

 //! Support for serializing the dep-graph and reloading it.

-#![deny(bare_trait_objects)]
-
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
      html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
      html_root_url = "https://doc.rust-lang.org/nightly/")]
--- a/src/librustc_lint/lib.rs
+++ b/src/librustc_lint/lib.rs
@ -19,8 +19,6 @@
 //!
 //! This API is completely unstable and subject to change.

-#![deny(bare_trait_objects)]
-
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
      html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
      html_root_url = "https://doc.rust-lang.org/nightly/")]
--- a/src/librustc_llvm/lib.rs
+++ b/src/librustc_llvm/lib.rs
@ -12,7 +12,6 @@
 #![allow(non_camel_case_types)]
 #![allow(non_snake_case)]
 #![allow(dead_code)]
-#![deny(bare_trait_objects)]

 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
       html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
--- a/src/librustc_lsan/lib.rs
+++ b/src/librustc_lsan/lib.rs
@ -8,8 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.

-#![deny(bare_trait_objects)]
-
 #![sanitizer_runtime]
 #![feature(alloc_system)]
 #![feature(sanitizer_runtime)]
--- a/src/librustc_metadata/lib.rs
+++ b/src/librustc_metadata/lib.rs
@ -8,8 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.

-#![deny(bare_trait_objects)]
-
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
       html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
       html_root_url = "https://doc.rust-lang.org/nightly/")]
--- a/src/librustc_mir/lib.rs
+++ b/src/librustc_mir/lib.rs
@ -14,8 +14,6 @@ Rust MIR: a lowered representation of Rust. Also: an experiment!

 */

-#![deny(bare_trait_objects)]
-
 #![feature(slice_patterns)]
 #![feature(slice_sort_by_cached_key)]
 #![feature(from_ref)]
--- a/src/librustc_msan/lib.rs
+++ b/src/librustc_msan/lib.rs
@ -8,8 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.

-#![deny(bare_trait_objects)]
-
 #![sanitizer_runtime]
 #![feature(alloc_system)]
 #![feature(sanitizer_runtime)]
--- a/src/librustc_passes/lib.rs
+++ b/src/librustc_passes/lib.rs
@ -14,8 +14,6 @@
 //!
 //! This API is completely unstable and subject to change.

-#![deny(bare_trait_objects)]
-
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
       html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
       html_root_url = "https://doc.rust-lang.org/nightly/")]
--- a/src/librustc_platform_intrinsics/lib.rs
+++ b/src/librustc_platform_intrinsics/lib.rs
@ -9,7 +9,6 @@
 // except according to those terms.

 #![allow(bad_style)]
-#![deny(bare_trait_objects)]

 pub struct Intrinsic {
    pub inputs: &'static [&'static Type],
--- a/src/librustc_plugin/lib.rs
+++ b/src/librustc_plugin/lib.rs
@ -60,8 +60,6 @@
 //! See the [`plugin` feature](../unstable-book/language-features/plugin.html) of
 //! the Unstable Book for more examples.

-#![deny(bare_trait_objects)]
-
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
       html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
       html_root_url = "https://doc.rust-lang.org/nightly/")]
--- a/src/librustc_privacy/lib.rs
+++ b/src/librustc_privacy/lib.rs
@ -8,8 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.

-#![deny(bare_trait_objects)]
-
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
       html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
       html_root_url = "https://doc.rust-lang.org/nightly/")]
--- a/src/librustc_resolve/lib.rs
+++ b/src/librustc_resolve/lib.rs
@ -8,8 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.

-#![deny(bare_trait_objects)]
-
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
      html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
      html_root_url = "https://doc.rust-lang.org/nightly/")]
--- a/src/librustc_save_analysis/lib.rs
+++ b/src/librustc_save_analysis/lib.rs
@ -13,7 +13,6 @@
       html_root_url = "https://doc.rust-lang.org/nightly/")]
 #![feature(custom_attribute)]
 #![allow(unused_attributes)]
-#![deny(bare_trait_objects)]

 #![recursion_limit="256"]

--- a/src/librustc_target/lib.rs
+++ b/src/librustc_target/lib.rs
@ -21,8 +21,6 @@
 //! one that doesn't; the one that doesn't might get decent parallel
 //! build speedups.

-#![deny(bare_trait_objects)]
-
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
      html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
      html_root_url = "https://doc.rust-lang.org/nightly/")]
--- a/src/librustc_traits/lib.rs
+++ b/src/librustc_traits/lib.rs
@ -11,8 +11,6 @@
 //! New recursive solver modeled on Chalk's recursive solver. Most of
 //! the guts are broken up into modules; see the comments in those modules.

-#![deny(bare_trait_objects)]
-
 #![feature(crate_in_paths)]
 #![feature(crate_visibility_modifier)]
 #![feature(extern_prelude)]
--- a/src/librustc_tsan/lib.rs
+++ b/src/librustc_tsan/lib.rs
@ -8,8 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.

-#![deny(bare_trait_objects)]
-
 #![sanitizer_runtime]
 #![feature(alloc_system)]
 #![feature(sanitizer_runtime)]
--- a/src/librustc_typeck/lib.rs
+++ b/src/librustc_typeck/lib.rs
@ -70,7 +70,6 @@ This API is completely unstable and subject to change.
      html_root_url = "https://doc.rust-lang.org/nightly/")]

 #![allow(non_camel_case_types)]
-#![deny(bare_trait_objects)]

 #![feature(box_patterns)]
 #![feature(box_syntax)]
--- a/src/libserialize/lib.rs
+++ b/src/libserialize/lib.rs
@ -14,8 +14,6 @@
 Core encoding and decoding interfaces.
 */

-#![deny(bare_trait_objects)]
-
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
       html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
       html_root_url = "https://doc.rust-lang.org/nightly/",
--- a/src/libstd/lib.rs
+++ b/src/libstd/lib.rs
@ -221,7 +221,6 @@
 // Don't link to std. We are std.
 #![no_std]

-#![deny(bare_trait_objects)]
 #![deny(missing_docs)]
 #![deny(missing_debug_implementations)]

--- a/src/libsyntax/lib.rs
+++ b/src/libsyntax/lib.rs
@ -14,8 +14,6 @@
 //!
 //! This API is completely unstable and subject to change.

-#![deny(bare_trait_objects)]
-
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
       html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
       html_root_url = "https://doc.rust-lang.org/nightly/",
--- a/src/libsyntax_ext/lib.rs
+++ b/src/libsyntax_ext/lib.rs
@ -10,8 +10,6 @@

 //! Syntax extensions in the Rust compiler.

-#![deny(bare_trait_objects)]
-
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
       html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
       html_root_url = "https://doc.rust-lang.org/nightly/")]
--- a/src/libsyntax_pos/lib.rs
+++ b/src/libsyntax_pos/lib.rs
@ -14,8 +14,6 @@
 //!
 //! This API is completely unstable and subject to change.

-#![deny(bare_trait_objects)]
-
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
      html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
      html_root_url = "https://doc.rust-lang.org/nightly/")]
--- a/src/libterm/lib.rs
+++ b/src/libterm/lib.rs
@ -45,7 +45,6 @@
       html_root_url = "https://doc.rust-lang.org/nightly/",
       html_playground_url = "https://play.rust-lang.org/",
       test(attr(deny(warnings))))]
-#![deny(bare_trait_objects)]
 #![deny(missing_docs)]

 #![cfg_attr(windows, feature(libc))]
--- a/src/libtest/lib.rs
+++ b/src/libtest/lib.rs
@ -27,8 +27,6 @@
 // this crate, which relies on this attribute (rather than the value of `--crate-name` passed by
 // cargo) to detect this crate.

-#![deny(bare_trait_objects)]
-
 #![crate_name = "test"]
 #![unstable(feature = "test", issue = "27812")]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
--- a/src/libunwind/lib.rs
+++ b/src/libunwind/lib.rs
@ -8,8 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.

-#![deny(bare_trait_objects)]
-
 #![no_std]
 #![unstable(feature = "panic_unwind", issue = "32837")]