Disable jemalloc on all platforms

Author: SimonSapin

src/Cargo.lock

@@ -15,17 +15,6 @@ dependencies = [
  "rand 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "alloc_jemalloc"
-version = "0.0.0"
-dependencies = [
- "build_helper 0.1.0",
- "cc 1.0.15 (registry+https://github.com/rust-lang/crates.io-index)",
- "compiler_builtins 0.0.0",
- "core 0.0.0",
- "libc 0.0.0",
-]
-
 [[package]]
 name = "alloc_system"
 version = "0.0.0"
@@ -2638,7 +2627,6 @@ name = "std"
 version = "0.0.0"
 dependencies = [
  "alloc 0.0.0",
- "alloc_jemalloc 0.0.0",
  "alloc_system 0.0.0",
  "build_helper 0.1.0",
  "cc 1.0.15 (registry+https://github.com/rust-lang/crates.io-index)",

src/librustc_target/spec/mod.rs

@@ -1182,11 +1182,7 @@ impl ToJson for Target {
 }
 
 fn maybe_jemalloc() -> Option<String> {
-    if cfg!(feature = "jemalloc") {
-        Some("alloc_jemalloc".to_string())
-    } else {
-        None
-    }
+    None
 }
 
 /// Either a target triple string or a path to a JSON file.

src/libstd/Cargo.toml

@@ -14,7 +14,6 @@ crate-type = ["dylib", "rlib"]
 
 [dependencies]
 alloc = { path = "../liballoc" }
-alloc_jemalloc = { path = "../liballoc_jemalloc", optional = true }
 alloc_system = { path = "../liballoc_system" }
 panic_unwind = { path = "../libpanic_unwind", optional = true }
 panic_abort = { path = "../libpanic_abort" }
@@ -44,8 +43,8 @@ build_helper = { path = "../build_helper" }
 
 [features]
 backtrace = []
-debug-jemalloc = ["alloc_jemalloc/debug"]
-jemalloc = ["alloc_jemalloc"]
+debug-jemalloc = []
+jemalloc = []
 force_alloc_system = []
 panic-unwind = ["panic_unwind"]
 profiler = ["profiler_builtins"]