Auto merge of #47161 - MaloJaffre:compiler-docs-regression, r=alexcrichton

Try to fix a perf regression by updating log

Upgrade `log` to `0.4` in multiple crates ~and `cargo`~.
Cc: #47154.

src/Cargo.lock

@@ -373,7 +373,7 @@ dependencies = [
  "filetime 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "getopts 0.2.15 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.34 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "miow 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.24 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1712,7 +1712,7 @@ dependencies = [
  "fmt_macros 0.0.0",
  "graphviz 0.0.0",
  "jobserver 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_apfloat 0.0.0",
  "rustc_back 0.0.0",
  "rustc_const_math 0.0.0",
@@ -1774,7 +1774,7 @@ dependencies = [
 name = "rustc_back"
 version = "0.0.0"
 dependencies = [
- "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "serialize 0.0.0",
  "syntax 0.0.0",
@@ -1794,7 +1794,7 @@ name = "rustc_borrowck"
 version = "0.0.0"
 dependencies = [
  "graphviz 0.0.0",
- "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc 0.0.0",
  "rustc_errors 0.0.0",
  "rustc_mir 0.0.0",
@@ -1807,7 +1807,7 @@ name = "rustc_const_eval"
 version = "0.0.0"
 dependencies = [
  "arena 0.0.0",
- "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc 0.0.0",
  "rustc_const_math 0.0.0",
  "rustc_data_structures 0.0.0",
@@ -1837,7 +1837,7 @@ name = "rustc_data_structures"
 version = "0.0.0"
 dependencies = [
  "cfg-if 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot_core 0.2.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "serialize 0.0.0",
@@ -1852,7 +1852,7 @@ dependencies = [
  "arena 0.0.0",
  "env_logger 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "graphviz 0.0.0",
- "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc 0.0.0",
  "rustc_allocator 0.0.0",
  "rustc_back 0.0.0",
@@ -1893,7 +1893,7 @@ name = "rustc_incremental"
 version = "0.0.0"
 dependencies = [
  "graphviz 0.0.0",
- "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc 0.0.0",
  "rustc_data_structures 0.0.0",
@@ -1906,7 +1906,7 @@ dependencies = [
 name = "rustc_lint"
 version = "0.0.0"
 dependencies = [
- "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc 0.0.0",
  "rustc_const_eval 0.0.0",
  "syntax 0.0.0",
@@ -1939,7 +1939,7 @@ name = "rustc_metadata"
 version = "0.0.0"
 dependencies = [
  "flate2 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc_macro 0.0.0",
  "rustc 0.0.0",
  "rustc_back 0.0.0",
@@ -1958,7 +1958,7 @@ dependencies = [
  "bitflags 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "byteorder 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "graphviz 0.0.0",
- "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "log_settings 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc 0.0.0",
  "rustc_apfloat 0.0.0",
@@ -1988,7 +1988,7 @@ dependencies = [
 name = "rustc_passes"
 version = "0.0.0"
 dependencies = [
- "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc 0.0.0",
  "rustc_const_eval 0.0.0",
  "rustc_const_math 0.0.0",
@@ -2027,7 +2027,7 @@ name = "rustc_resolve"
 version = "0.0.0"
 dependencies = [
  "arena 0.0.0",
- "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc 0.0.0",
  "rustc_data_structures 0.0.0",
  "rustc_errors 0.0.0",
@@ -2039,7 +2039,7 @@ dependencies = [
 name = "rustc_save_analysis"
 version = "0.0.0"
 dependencies = [
- "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rls-data 0.14.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rls-span 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc 0.0.0",
@@ -2058,7 +2058,7 @@ dependencies = [
  "cc 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "flate2 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "jobserver 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc 0.0.0",
  "rustc-demangle 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2086,7 +2086,7 @@ version = "0.0.0"
 dependencies = [
  "ar 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "flate2 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc 0.0.0",
  "rustc_back 0.0.0",
  "rustc_data_structures 0.0.0",
@@ -2111,7 +2111,7 @@ version = "0.0.0"
 dependencies = [
  "arena 0.0.0",
  "fmt_macros 0.0.0",
- "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc 0.0.0",
  "rustc_const_math 0.0.0",
  "rustc_data_structures 0.0.0",
@@ -2413,7 +2413,7 @@ name = "syntax"
 version = "0.0.0"
 dependencies = [
  "bitflags 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_cratesio_shim 0.0.0",
  "rustc_data_structures 0.0.0",
  "rustc_errors 0.0.0",

src/librustc/Cargo.toml

@@ -14,7 +14,7 @@ bitflags = "1.0"
 fmt_macros = { path = "../libfmt_macros" }
 graphviz = { path = "../libgraphviz" }
 jobserver = "0.1"
-log = "0.3"
+log = "0.4"
 rustc_apfloat = { path = "../librustc_apfloat" }
 rustc_back = { path = "../librustc_back" }
 rustc_const_math = { path = "../librustc_const_math" }

src/librustc/hir/map/mod.rs

@@ -1068,7 +1068,7 @@ pub fn map_crate<'hir>(sess: &::session::Session,
                                                   cmdline_args)
     };
 
-    if log_enabled!(::log::LogLevel::Debug) {
+    if log_enabled!(::log::Level::Debug) {
         // This only makes sense for ordered stores; note the
         // enumerate to count the number of entries.
         let (entries_less_1, _) = map.iter().filter(|&x| {

src/librustc_back/Cargo.toml

@@ -11,7 +11,7 @@ crate-type = ["dylib"]
 [dependencies]
 syntax = { path = "../libsyntax" }
 serialize = { path = "../libserialize" }
-log = "0.3"
+log = "0.4"
 rand = "0.3"
 
 [features]

src/librustc_borrowck/Cargo.toml

@@ -10,7 +10,7 @@ crate-type = ["dylib"]
 test = false
 
 [dependencies]
-log = "0.3"
+log = "0.4"
 syntax = { path = "../libsyntax" }
 syntax_pos = { path = "../libsyntax_pos" }
 graphviz = { path = "../libgraphviz" }

src/librustc_const_eval/Cargo.toml

@@ -10,7 +10,7 @@ crate-type = ["dylib"]
 
 [dependencies]
 arena = { path = "../libarena" }
-log = "0.3"
+log = "0.4"
 rustc = { path = "../librustc" }
 rustc_const_math = { path = "../librustc_const_math" }
 rustc_data_structures = { path = "../librustc_data_structures" }

src/librustc_data_structures/Cargo.toml

@@ -9,7 +9,7 @@ path = "lib.rs"
 crate-type = ["dylib"]
 
 [dependencies]
-log = "0.3"
+log = "0.4"
 serialize = { path = "../libserialize" }
 cfg-if = "0.1.2"
 stable_deref_trait = "1.0.0"
@@ -17,4 +17,4 @@ parking_lot_core = "0.2.8"
 
 [dependencies.parking_lot]
 version = "0.5"
-features = ["nightly"]
+features = ["nightly"]

src/librustc_driver/Cargo.toml

@@ -11,7 +11,7 @@ crate-type = ["dylib"]
 [dependencies]
 arena = { path = "../libarena" }
 graphviz = { path = "../libgraphviz" }
-log = { version = "0.3", features = ["release_max_level_info"] }
+log = { version = "0.4", features = ["release_max_level_info"] }
 env_logger = { version = "0.4", default-features = false }
 rustc = { path = "../librustc" }
 rustc_allocator = { path = "../librustc_allocator" }

src/librustc_driver/driver.rs

@@ -253,14 +253,14 @@ pub fn compile_input(sess: &Session,
 
             result?;
 
-            if log_enabled!(::log::LogLevel::Info) {
+            if log_enabled!(::log::Level::Info) {
                 println!("Pre-trans");
                 tcx.print_debug_stats();
             }
 
             let trans = phase_4_translate_to_llvm::<DefaultTransCrate>(tcx, rx);
 
-            if log_enabled!(::log::LogLevel::Info) {
+            if log_enabled!(::log::Level::Info) {
                 println!("Post-trans");
                 tcx.print_debug_stats();
             }

src/librustc_incremental/Cargo.toml

@@ -10,7 +10,7 @@ crate-type = ["dylib"]
 
 [dependencies]
 graphviz = { path = "../libgraphviz" }
-log = "0.3"
+log = "0.4"
 rand = "0.3"
 rustc = { path = "../librustc" }
 rustc_data_structures = { path = "../librustc_data_structures" }

src/librustc_lint/Cargo.toml

@@ -10,7 +10,7 @@ crate-type = ["dylib"]
 test = false
 
 [dependencies]
-log = "0.3"
+log = "0.4"
 rustc = { path = "../librustc" }
 rustc_const_eval = { path = "../librustc_const_eval" }
 syntax = { path = "../libsyntax" }

src/librustc_metadata/Cargo.toml

@@ -10,7 +10,7 @@ crate-type = ["dylib"]
 
 [dependencies]
 flate2 = "1.0"
-log = "0.3"
+log = "0.4"
 proc_macro = { path = "../libproc_macro" }
 rustc = { path = "../librustc" }
 rustc_back = { path = "../librustc_back" }

src/librustc_metadata/creader.rs

@@ -1051,7 +1051,7 @@ impl<'a> middle::cstore::CrateLoader for CrateLoader<'a> {
         self.inject_allocator_crate(krate);
         self.inject_panic_runtime(krate);
 
-        if log_enabled!(log::LogLevel::Info) {
+        if log_enabled!(log::Level::Info) {
             dump_crates(&self.cstore);
         }
     }

src/librustc_mir/Cargo.toml

@@ -11,7 +11,7 @@ crate-type = ["dylib"]
 [dependencies]
 bitflags = "1.0"
 graphviz = { path = "../libgraphviz" }
-log = "0.3"
+log = "0.4"
 log_settings = "0.1.1"
 rustc = { path = "../librustc" }
 rustc_back = { path = "../librustc_back" }

src/librustc_mir/interpret/eval_context.rs

@@ -781,7 +781,7 @@ impl<'a, 'tcx, M: Machine<'tcx>> EvalContext<'a, 'tcx, M> {
             }
         }
 
-        if log_enabled!(::log::LogLevel::Trace) {
+        if log_enabled!(::log::Level::Trace) {
             self.dump_local(dest);
         }
 

src/librustc_mir/interpret/place.rs

@@ -209,7 +209,7 @@ impl<'a, 'tcx, M: Machine<'tcx>> EvalContext<'a, 'tcx, M> {
             }
         };
 
-        if log_enabled!(::log::LogLevel::Trace) {
+        if log_enabled!(::log::Level::Trace) {
             self.dump_local(place);
         }
 

src/librustc_passes/Cargo.toml

@@ -9,7 +9,7 @@ path = "lib.rs"
 crate-type = ["dylib"]
 
 [dependencies]
-log = "0.3"
+log = "0.4"
 rustc = { path = "../librustc" }
 rustc_const_eval = { path = "../librustc_const_eval" }
 rustc_const_math = { path = "../librustc_const_math" }

src/librustc_resolve/Cargo.toml

@@ -10,7 +10,7 @@ crate-type = ["dylib"]
 test = false
 
 [dependencies]
-log = "0.3"
+log = "0.4"
 syntax = { path = "../libsyntax" }
 rustc = { path = "../librustc" }
 arena = { path = "../libarena" }

src/librustc_save_analysis/Cargo.toml

@@ -9,7 +9,7 @@ path = "lib.rs"
 crate-type = ["dylib"]
 
 [dependencies]
-log = "0.3"
+log = "0.4"
 rustc = { path = "../librustc" }
 rustc_data_structures = { path = "../librustc_data_structures" }
 rustc_typeck = { path = "../librustc_typeck" }

src/librustc_trans/Cargo.toml

@@ -13,7 +13,7 @@ test = false
 bitflags = "1.0"
 flate2 = "1.0"
 jobserver = "0.1.5"
-log = "0.3"
+log = "0.4"
 num_cpus = "1.0"
 rustc = { path = "../librustc" }
 rustc-demangle = "0.1.4"

src/librustc_trans_utils/Cargo.toml

@@ -12,7 +12,7 @@ test = false
 [dependencies]
 ar = "0.3.0"
 flate2 = "1.0"
-log = "0.3"
+log = "0.4"
 
 syntax = { path = "../libsyntax" }
 syntax_pos = { path = "../libsyntax_pos" }

src/librustc_typeck/Cargo.toml

@@ -10,7 +10,7 @@ crate-type = ["dylib"]
 test = false
 
 [dependencies]
-log = "0.3"
+log = "0.4"
 syntax = { path = "../libsyntax" }
 arena = { path = "../libarena" }
 fmt_macros = { path = "../libfmt_macros" }

src/libsyntax/Cargo.toml

@@ -11,7 +11,7 @@ crate-type = ["dylib"]
 [dependencies]
 bitflags = "1.0"
 serialize = { path = "../libserialize" }
-log = "0.3"
+log = "0.4"
 syntax_pos = { path = "../libsyntax_pos" }
 rustc_cratesio_shim = { path = "../librustc_cratesio_shim" }
 rustc_errors = { path = "../librustc_errors" }

src/tools/compiletest/Cargo.toml

@@ -8,7 +8,7 @@ diff = "0.1.10"
 env_logger = { version = "0.4", default-features = false }
 filetime = "0.1"
 getopts = "0.2"
-log = "0.3"
+log = "0.4"
 regex = "0.2"
 rustc-serialize = "0.3"