Auto merge of #58777 - Centril:rollup, r=Centril

Rollup of 14 pull requests

Successful merges:

 - #58075 (Fix for issue  #58050)
 - #58627 (rustdoc: move collapse and unindent docs passes earlier)
 - #58630 (Make `visit_clobber` panic-safe.)
 - #58678 (Deny `async fn` in 2015 edition)
 - #58680 (Fix an indexing error when using `x.py help`)
 - #58703 (Fix copy-pasted typo for read_string return value)
 - #58744 (Update dlmalloc to 0.1.3)
 - #58746 (std: docs: Disable running several Stdio doctests)
 - #58748 (update scoped_tls to 1.0)
 - #58749 (Reduce Repetitions of (n << amt) >> amt)
 - #58752 (Update string_cache_codegen to 0.4.2)
 - #58755 (Clarify `rotate_{left,right}` docs)
 - #58757 (Normalize the type Self resolves to in an impl)
 - #58761 (Add tracking issue for the unwind attribute)

Failed merges:

r? @ghost

Author: bors

Cargo.lock

@@ -744,7 +744,7 @@ dependencies = [
 
 [[package]]
 name = "dlmalloc"
-version = "0.1.2"
+version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "compiler_builtins 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1399,7 +1399,7 @@ dependencies = [
  "serde_derive 1.0.81 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.33 (registry+https://github.com/rust-lang/crates.io-index)",
  "string_cache 0.7.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "string_cache_codegen 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "string_cache_codegen 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "tendril 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1936,14 +1936,6 @@ dependencies = [
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "proc-macro2"
-version = "0.3.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "proc-macro2"
 version = "0.4.24"
@@ -2015,14 +2007,6 @@ name = "quote"
 version = "0.3.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "quote"
-version = "0.5.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "proc-macro2 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "quote"
 version = "0.6.10"
@@ -2092,7 +2076,7 @@ name = "rand_chacha"
 version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "rand_core 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_core 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -2114,7 +2098,7 @@ name = "rand_hc"
 version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "rand_core 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_core 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2139,7 +2123,7 @@ name = "rand_xorshift"
 version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "rand_core 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_core 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2381,7 +2365,7 @@ dependencies = [
  "rustc_errors 0.0.0",
  "rustc_fs_util 0.0.0",
  "rustc_target 0.0.0",
- "scoped-tls 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "scoped-tls 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "serialize 0.0.0",
  "smallvec 0.6.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "syntax 0.0.0",
@@ -2726,7 +2710,7 @@ dependencies = [
  "rustc_target 0.0.0",
  "rustc_traits 0.0.0",
  "rustc_typeck 0.0.0",
- "scoped-tls 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "scoped-tls 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "serialize 0.0.0",
  "smallvec 0.6.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "syntax 0.0.0",
@@ -3090,6 +3074,11 @@ name = "scoped-tls"
 version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "scoped-tls"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "scoped_threadpool"
 version = "0.1.9"
@@ -3230,7 +3219,7 @@ dependencies = [
  "cc 1.0.28 (registry+https://github.com/rust-lang/crates.io-index)",
  "compiler_builtins 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "core 0.0.0",
- "dlmalloc 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "dlmalloc 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "fortanix-sgx-abi 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.46 (registry+https://github.com/rust-lang/crates.io-index)",
  "panic_abort 0.0.0",
@@ -3255,19 +3244,19 @@ dependencies = [
  "phf_shared 0.7.22 (registry+https://github.com/rust-lang/crates.io-index)",
  "precomputed-hash 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.82 (registry+https://github.com/rust-lang/crates.io-index)",
- "string_cache_codegen 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "string_cache_codegen 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "string_cache_shared 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "string_cache_codegen"
-version = "0.4.1"
+version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "phf_generator 0.7.22 (registry+https://github.com/rust-lang/crates.io-index)",
  "phf_shared 0.7.22 (registry+https://github.com/rust-lang/crates.io-index)",
- "proc-macro2 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 0.4.24 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "string_cache_shared 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -3345,7 +3334,7 @@ dependencies = [
  "rustc_data_structures 0.0.0",
  "rustc_errors 0.0.0",
  "rustc_target 0.0.0",
- "scoped-tls 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "scoped-tls 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "serialize 0.0.0",
  "smallvec 0.6.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "syntax_pos 0.0.0",
@@ -3372,7 +3361,7 @@ dependencies = [
  "arena 0.0.0",
  "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_data_structures 0.0.0",
- "scoped-tls 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "scoped-tls 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "serialize 0.0.0",
  "unicode-width 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -4000,7 +3989,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum digest 0.7.6 (registry+https://github.com/rust-lang/crates.io-index)" = "03b072242a8cbaf9c145665af9d250c59af3b958f83ed6824e13533cf76d5b90"
 "checksum directories 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "72d337a64190607d4fcca2cb78982c5dd57f4916e19696b48a575fa746b6cb0f"
 "checksum dirs 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "88972de891f6118092b643d85a0b28e0678e0f948d7f879aa32f2d5aafe97d2a"
-"checksum dlmalloc 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "d56ad71b31043818d0ee10a7fb9664882f8e45849c81647585e6a3124f185517"
+"checksum dlmalloc 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "f283302e035e61c23f2b86b3093e8c6273a4c3125742d6087e96ade001ca5e63"
 "checksum either 1.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3be565ca5c557d7f59e7cfcf1844f9e3033650c929c6566f511e8005f205c1d0"
 "checksum elasticlunr-rs 2.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "a99a310cd1f9770e7bf8e48810c7bcbb0e078c8fb23a8c7bcf0da4c2bf61a455"
 "checksum ena 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f56c93cc076508c549d9bb747f79aa9b4eb098be7b8cad8830c3137ef52d1e00"
@@ -4124,15 +4113,13 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum precomputed-hash 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "925383efa346730478fb4838dbe9137d2a47675ad789c546d150a6e1dd4ab31c"
 "checksum pretty_assertions 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "3a029430f0d744bc3d15dd474d591bed2402b645d024583082b9f63bb936dac6"
 "checksum pretty_env_logger 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "df8b3f4e0475def7d9c2e5de8e5a1306949849761e107b360d03e98eafaffd61"
-"checksum proc-macro2 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)" = "1b06e2f335f48d24442b35a19df506a835fb3547bc3c06ef27340da9acf5cae7"
 "checksum proc-macro2 0.4.24 (registry+https://github.com/rust-lang/crates.io-index)" = "77619697826f31a02ae974457af0b29b723e5619e113e9397b8b82c6bd253f09"
 "checksum proptest 0.8.7 (registry+https://github.com/rust-lang/crates.io-index)" = "926d0604475349f463fe44130aae73f2294b5309ab2ca0310b998bd334ef191f"
 "checksum pulldown-cmark 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "d6fdf85cda6cadfae5428a54661d431330b312bc767ddbc57adbedc24da66e32"
 "checksum pulldown-cmark 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "eef52fac62d0ea7b9b4dc7da092aa64ea7ec3d90af6679422d3d7e0e14b6ee15"
 "checksum quick-error 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "9274b940887ce9addde99c4eee6b5c44cc494b182b97e73dc8ffdcb3397fd3f0"
 "checksum quine-mc_cluskey 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)" = "07589615d719a60c8dd8a4622e7946465dfef20d1a428f969e3443e7386d5f45"
 "checksum quote 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)" = "7a6e920b65c65f10b2ae65c831a81a073a89edd28c7cce89475bff467ab4167a"
-"checksum quote 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "9949cfe66888ffe1d53e6ec9d9f3b70714083854be20fd5e271b232a017401e8"
 "checksum quote 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)" = "53fa22a1994bd0f9372d7a816207d8a2677ad0325b073f5c5332760f0fb62b5c"
 "checksum racer 2.1.19 (registry+https://github.com/rust-lang/crates.io-index)" = "d634483bed41bb116122b84ffe0ef8740345c2ceb2784ce86c33499700eb13a7"
 "checksum rand 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)" = "8356f47b32624fef5b3301c1be97e5944ecdd595409cc5da11d05f211db6cfbd"
@@ -4183,6 +4170,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum same-file 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "8f20c4be53a8a1ff4c1f1b2bd14570d2f634628709752f0702ecdd2b3f9a5267"
 "checksum schannel 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)" = "0e1a231dc10abf6749cfa5d7767f25888d484201accbd919b66ab5413c502d56"
 "checksum scoped-tls 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "332ffa32bf586782a3efaeb58f127980944bbc8c4d6913a86107ac2a5ab24b28"
+"checksum scoped-tls 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ea6a9290e3c9cf0f18145ef7ffa62d68ee0bf5fcd651017e586dc7fd5da448c2"
 "checksum scoped_threadpool 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)" = "1d51f5df5af43ab3f1360b429fa5e0152ac5ce8c0bd6485cae490332e96846a8"
 "checksum scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "94258f53601af11e6a49f722422f6e3425c52b06245a5cf9bc09908b174f5e27"
 "checksum semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
@@ -4201,7 +4189,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum socket2 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)" = "c4d11a52082057d87cb5caa31ad812f4504b97ab44732cd8359df2e9ff9f48e7"
 "checksum stable_deref_trait 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ffbc596e092fe5f598b12ef46cc03754085ac2f4d8c739ad61c4ae266cc3b3fa"
 "checksum string_cache 0.7.3 (registry+https://github.com/rust-lang/crates.io-index)" = "25d70109977172b127fe834e5449e5ab1740b9ba49fa18a2020f509174f25423"
-"checksum string_cache_codegen 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "35293b05cf1494e8ddd042a7df6756bf18d07f42d234f32e71dce8a7aabb0191"
+"checksum string_cache_codegen 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "1eea1eee654ef80933142157fdad9dd8bc43cf7c74e999e369263496f04ff4da"
 "checksum string_cache_shared 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b1884d1bc09741d466d9b14e6d37ac89d6909cbcac41dd9ae982d4d063bbedfc"
 "checksum strsim 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bb4f380125926a99e52bc279241539c018323fab05ad6368b56f93d9369ff550"
 "checksum strum 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f6c3a2071519ab6a48f465808c4c1ffdd00dfc8e93111d02b4fc5abab177676e"

src/bootstrap/bootstrap.py

@@ -830,7 +830,7 @@ def main():
 
     # x.py help <cmd> ...
     if len(sys.argv) > 1 and sys.argv[1] == 'help':
-        sys.argv = sys.argv[:1] + [sys.argv[2], '-h'] + sys.argv[3:]
+        sys.argv = [sys.argv[0], '-h'] + sys.argv[2:]
 
     help_triggered = (
         '-h' in sys.argv) or ('--help' in sys.argv) or (len(sys.argv) == 1)

src/libcore/num/mod.rs

@@ -346,7 +346,7 @@ $EndFeature, "
             concat!("Shifts the bits to the left by a specified amount, `n`,
 wrapping the truncated bits to the end of the resulting integer.
 
-Please note this isn't the same operation as `<<`!
+Please note this isn't the same operation as the `<<` shifting operator!
 
 # Examples
 
@@ -370,7 +370,7 @@ assert_eq!(n.rotate_left(", $rot, "), m);
 wrapping the truncated bits to the beginning of the resulting
 integer.
 
-Please note this isn't the same operation as `>>`!
+Please note this isn't the same operation as the `>>` shifting operator!
 
 # Examples
 
@@ -2300,7 +2300,7 @@ assert_eq!(n.trailing_zeros(), 3);", $EndFeature, "
             concat!("Shifts the bits to the left by a specified amount, `n`,
 wrapping the truncated bits to the end of the resulting integer.
 
-Please note this isn't the same operation as `<<`!
+Please note this isn't the same operation as the `<<` shifting operator!
 
 # Examples
 
@@ -2324,7 +2324,7 @@ assert_eq!(n.rotate_left(", $rot, "), m);
 wrapping the truncated bits to the beginning of the resulting
 integer.
 
-Please note this isn't the same operation as `>>`!
+Please note this isn't the same operation as the `>>` shifting operator!
 
 # Examples
 

src/libcore/num/wrapping.rs

@@ -429,7 +429,8 @@ assert_eq!(n.trailing_zeros(), 3);
             /// wrapping the truncated bits to the end of the resulting
             /// integer.
             ///
-            /// Please note this isn't the same operation as `>>`!
+            /// Please note this isn't the same operation as the `>>` shifting
+            /// operator!
             ///
             /// # Examples
             ///
@@ -454,7 +455,8 @@ assert_eq!(n.trailing_zeros(), 3);
             /// wrapping the truncated bits to the beginning of the resulting
             /// integer.
             ///
-            /// Please note this isn't the same operation as `<<`!
+            /// Please note this isn't the same operation as the `<<` shifting
+            /// operator!
             ///
             /// # Examples
             ///

src/librustc/Cargo.toml

@@ -17,7 +17,7 @@ graphviz = { path = "../libgraphviz" }
 jobserver = "0.1"
 lazy_static = "1.0.0"
 num_cpus = "1.0"
-scoped-tls = { version = "0.1.1", features = ["nightly"] }
+scoped-tls = "1.0"
 log = { version = "0.4", features = ["release_max_level_info", "std"] }
 polonius-engine = "0.6.2"
 rustc-rayon = "0.1.1"

src/librustc/hir/lowering.rs

@@ -2892,7 +2892,7 @@ impl<'a> LoweringContext<'a> {
                     // `impl Future<Output = T>` here because lower_body
                     // only cares about the input argument patterns in the function
                     // declaration (decl), not the return types.
-                    let body_id = this.lower_async_body(decl, header.asyncness, body);
+                    let body_id = this.lower_async_body(decl, header.asyncness.node, body);
 
                     let (generics, fn_decl) = this.add_in_band_defs(
                         generics,
@@ -2902,7 +2902,7 @@ impl<'a> LoweringContext<'a> {
                             decl,
                             Some((fn_def_id, idty)),
                             true,
-                            header.asyncness.opt_return_id()
+                            header.asyncness.node.opt_return_id()
                         ),
                     );
 
@@ -3398,14 +3398,14 @@ impl<'a> LoweringContext<'a> {
                 )
             }
             ImplItemKind::Method(ref sig, ref body) => {
-                let body_id = self.lower_async_body(&sig.decl, sig.header.asyncness, body);
+                let body_id = self.lower_async_body(&sig.decl, sig.header.asyncness.node, body);
                 let impl_trait_return_allow = !self.is_in_trait_impl;
                 let (generics, sig) = self.lower_method_sig(
                     &i.generics,
                     sig,
                     impl_item_def_id,
                     impl_trait_return_allow,
-                    sig.header.asyncness.opt_return_id(),
+                    sig.header.asyncness.node.opt_return_id(),
                 );
                 (generics, hir::ImplItemKind::Method(sig, body_id))
             }
@@ -3624,7 +3624,7 @@ impl<'a> LoweringContext<'a> {
     fn lower_fn_header(&mut self, h: FnHeader) -> hir::FnHeader {
         hir::FnHeader {
             unsafety: self.lower_unsafety(h.unsafety),
-            asyncness: self.lower_asyncness(h.asyncness),
+            asyncness: self.lower_asyncness(h.asyncness.node),
             constness: self.lower_constness(h.constness),
             abi: h.abi,
         }

src/librustc/hir/map/def_collector.rs

@@ -73,7 +73,7 @@ impl<'a> DefCollector<'a> {
         decl: &'a FnDecl,
         body: &'a Block,
     ) {
-        let (closure_id, return_impl_trait_id) = match header.asyncness {
+        let (closure_id, return_impl_trait_id) = match header.asyncness.node {
             IsAsync::Async {
                 closure_id,
                 return_impl_trait_id,
@@ -129,10 +129,10 @@ impl<'a> visit::Visitor<'a> for DefCollector<'a> {
             }
             ItemKind::Fn(
                 ref decl,
-                ref header @ FnHeader { asyncness: IsAsync::Async { .. }, .. },
+                ref header,
                 ref generics,
                 ref body,
-            ) => {
+            ) if header.asyncness.node.is_async() => {
                 return self.visit_async_fn(
                     i.id,
                     i.ident.name,
@@ -242,9 +242,9 @@ impl<'a> visit::Visitor<'a> for DefCollector<'a> {
     fn visit_impl_item(&mut self, ii: &'a ImplItem) {
         let def_data = match ii.node {
             ImplItemKind::Method(MethodSig {
-                header: ref header @ FnHeader { asyncness: IsAsync::Async { .. }, .. },
+                ref header,
                 ref decl,
-            }, ref body) => {
+            }, ref body) if header.asyncness.node.is_async() => {
                 return self.visit_async_fn(
                     ii.id,
                     ii.ident.name,