diff --git a/src/liballoc/lib.rs b/src/liballoc/lib.rs
index 418a084da6787..cdadd01b4abfc 100644
--- a/src/liballoc/lib.rs
+++ b/src/liballoc/lib.rs
@@ -56,8 +56,6 @@
 //! The [`heap`](heap/index.html) module defines the low-level interface to the
 //! default global allocator. It is not compatible with the libc allocator API.
 
-#![crate_name = "alloc"]
-#![crate_type = "rlib"]
 #![allow(unused_attributes)]
 #![unstable(feature = "alloc",
             reason = "this library is unlikely to be stabilized in its current \
diff --git a/src/liballoc_jemalloc/lib.rs b/src/liballoc_jemalloc/lib.rs
index 288531cb5b21f..4dec3c18bacd4 100644
--- a/src/liballoc_jemalloc/lib.rs
+++ b/src/liballoc_jemalloc/lib.rs
@@ -8,8 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#![crate_name = "alloc_jemalloc"]
-#![crate_type = "rlib"]
 #![no_std]
 #![allocator]
 #![unstable(feature = "alloc_jemalloc",
diff --git a/src/liballoc_system/lib.rs b/src/liballoc_system/lib.rs
index 1f36bc4fbcea7..9d08d7c383069 100644
--- a/src/liballoc_system/lib.rs
+++ b/src/liballoc_system/lib.rs
@@ -8,8 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#![crate_name = "alloc_system"]
-#![crate_type = "rlib"]
 #![no_std]
 #![allocator]
 #![deny(warnings)]
diff --git a/src/libarena/lib.rs b/src/libarena/lib.rs
index 4338ac7fd022c..c2fc5e002b1f2 100644
--- a/src/libarena/lib.rs
+++ b/src/libarena/lib.rs
@@ -18,10 +18,7 @@
 //! This crate implements `TypedArena`, a simple arena that can only hold
 //! objects of a single type.
 
-#![crate_name = "arena"]
 #![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
-#![crate_type = "rlib"]
-#![crate_type = "dylib"]
 #![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/",
diff --git a/src/libcollections/lib.rs b/src/libcollections/lib.rs
index 34626326c221c..54a2391f85a53 100644
--- a/src/libcollections/lib.rs
+++ b/src/libcollections/lib.rs
@@ -13,8 +13,6 @@
 //! See [`std::collections`](../std/collections/index.html) for a detailed
 //! discussion of collections in Rust.
 
-#![crate_name = "collections"]
-#![crate_type = "rlib"]
 #![unstable(feature = "collections",
             reason = "library is unlikely to be stabilized with the current \
                       layout and name, use std::collections instead",
diff --git a/src/libcompiler_builtins/lib.rs b/src/libcompiler_builtins/lib.rs
index 09b3d63950705..25f0051ba111d 100644
--- a/src/libcompiler_builtins/lib.rs
+++ b/src/libcompiler_builtins/lib.rs
@@ -14,8 +14,6 @@
 #![unstable(feature = "compiler_builtins_lib",
             reason = "internal implementation detail of rustc right now",
             issue = "0")]
-#![crate_name = "compiler_builtins"]
-#![crate_type = "rlib"]
 #![allow(unused_features)]
 #![feature(staged_api, core_intrinsics, repr_simd,
            i128_type, core_float, abi_unadjusted, associated_consts)]
diff --git a/src/libcore/lib.rs b/src/libcore/lib.rs
index b6ab1ecaf4e65..85daa76522f16 100644
--- a/src/libcore/lib.rs
+++ b/src/libcore/lib.rs
@@ -51,9 +51,7 @@
 // Since libcore defines many fundamental lang items, all tests live in a
 // separate crate, libcoretest, to avoid bizarre issues.
 
-#![crate_name = "core"]
 #![stable(feature = "core", since = "1.6.0")]
-#![crate_type = "rlib"]
 #![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/",
diff --git a/src/libflate/lib.rs b/src/libflate/lib.rs
index e0bea884f31c5..055e0bd67a0c4 100644
--- a/src/libflate/lib.rs
+++ b/src/libflate/lib.rs
@@ -14,10 +14,7 @@
 //! [def]: https://en.wikipedia.org/wiki/DEFLATE
 //! [mz]: https://code.google.com/p/miniz/
 
-#![crate_name = "flate"]
 #![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
-#![crate_type = "rlib"]
-#![crate_type = "dylib"]
 #![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/",
diff --git a/src/libfmt_macros/lib.rs b/src/libfmt_macros/lib.rs
index 641a42b08188f..ddfa98dd1cb65 100644
--- a/src/libfmt_macros/lib.rs
+++ b/src/libfmt_macros/lib.rs
@@ -14,10 +14,7 @@
 //! Parsing does not happen at runtime: structures of `std::fmt::rt` are
 //! generated instead.
 
-#![crate_name = "fmt_macros"]
 #![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
-#![crate_type = "rlib"]
-#![crate_type = "dylib"]
 #![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/",
diff --git a/src/libgetopts/lib.rs b/src/libgetopts/lib.rs
index c69c68ba59c01..a1477eac24d27 100644
--- a/src/libgetopts/lib.rs
+++ b/src/libgetopts/lib.rs
@@ -77,12 +77,9 @@
 //! }
 //! ```
 
-#![crate_name = "getopts"]
 #![cfg_attr(stage0, unstable(feature = "rustc_private",
             reason = "use the crates.io `getopts` library instead",
             issue = "27812"))]
-#![crate_type = "rlib"]
-#![crate_type = "dylib"]
 #![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/",
diff --git a/src/libgraphviz/lib.rs b/src/libgraphviz/lib.rs
index 2c6744e7c9053..46aa312e04a24 100644
--- a/src/libgraphviz/lib.rs
+++ b/src/libgraphviz/lib.rs
@@ -283,11 +283,8 @@
 //!
 //! * [DOT language](http://www.graphviz.org/doc/info/lang.html)
 
-#![crate_name = "graphviz"]
 #![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
 #![cfg_attr(stage0, feature(staged_api))]
-#![crate_type = "rlib"]
-#![crate_type = "dylib"]
 #![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/",
diff --git a/src/libpanic_abort/lib.rs b/src/libpanic_abort/lib.rs
index 348180a48dc38..8be6f6470231d 100644
--- a/src/libpanic_abort/lib.rs
+++ b/src/libpanic_abort/lib.rs
@@ -14,8 +14,6 @@
 //! simpler! That being said, it's not quite as versatile, but here goes!
 
 #![no_std]
-#![crate_name = "panic_abort"]
-#![crate_type = "rlib"]
 #![unstable(feature = "panic_abort", issue = "32837")]
 #![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",
diff --git a/src/libpanic_unwind/lib.rs b/src/libpanic_unwind/lib.rs
index 90f4b364482e6..5a340f1323df5 100644
--- a/src/libpanic_unwind/lib.rs
+++ b/src/libpanic_unwind/lib.rs
@@ -23,8 +23,6 @@
 //! module.
 
 #![no_std]
-#![crate_name = "panic_unwind"]
-#![crate_type = "rlib"]
 #![unstable(feature = "panic_unwind", issue = "32837")]
 #![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",
diff --git a/src/libproc_macro/lib.rs b/src/libproc_macro/lib.rs
index 0ab0550469bad..e377bf96c3743 100644
--- a/src/libproc_macro/lib.rs
+++ b/src/libproc_macro/lib.rs
@@ -23,10 +23,7 @@
 //!
 //! See [the book](../book/procedural-macros.html) for more.
 
-#![crate_name = "proc_macro"]
 #![stable(feature = "proc_macro_lib", since = "1.15.0")]
-#![crate_type = "rlib"]
-#![crate_type = "dylib"]
 #![deny(warnings)]
 #![deny(missing_docs)]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
diff --git a/src/libproc_macro_plugin/lib.rs b/src/libproc_macro_plugin/lib.rs
index 68c5d49591839..e4f40036bd5e8 100644
--- a/src/libproc_macro_plugin/lib.rs
+++ b/src/libproc_macro_plugin/lib.rs
@@ -71,11 +71,9 @@
 //!     conds.into_iter().collect()
 //! }
 //! ```
-#![crate_name = "proc_macro_plugin"]
+
 #![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
 #![feature(plugin_registrar)]
-#![crate_type = "dylib"]
-#![crate_type = "rlib"]
 #![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/")]
diff --git a/src/librand/lib.rs b/src/librand/lib.rs
index ca05db15ffeb9..ad4509d2f5b88 100644
--- a/src/librand/lib.rs
+++ b/src/librand/lib.rs
@@ -16,8 +16,6 @@
 //! is not recommended to use this library directly, but rather the official
 //! interface through `std::rand`.
 
-#![crate_name = "rand"]
-#![crate_type = "rlib"]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk.png",
        html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
        html_root_url = "https://doc.rust-lang.org/nightly/",
diff --git a/src/librustc/lib.rs b/src/librustc/lib.rs
index 2216103636fb6..13e16b0bf91df 100644
--- a/src/librustc/lib.rs
+++ b/src/librustc/lib.rs
@@ -14,9 +14,6 @@
 //!
 //! This API is completely unstable and subject to change.
 
-#![crate_name = "rustc"]
-#![crate_type = "dylib"]
-#![crate_type = "rlib"]
 #![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/")]
diff --git a/src/librustc_back/lib.rs b/src/librustc_back/lib.rs
index 69eabfe2ac0bf..68966813fb4d2 100644
--- a/src/librustc_back/lib.rs
+++ b/src/librustc_back/lib.rs
@@ -21,9 +21,6 @@
 //! one that doesn't; the one that doesn't might get decent parallel
 //! build speedups.
 
-#![crate_name = "rustc_back"]
-#![crate_type = "dylib"]
-#![crate_type = "rlib"]
 #![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/")]
diff --git a/src/librustc_bitflags/lib.rs b/src/librustc_bitflags/lib.rs
index 23558d8288342..2bf06d0289ba9 100644
--- a/src/librustc_bitflags/lib.rs
+++ b/src/librustc_bitflags/lib.rs
@@ -9,9 +9,7 @@
 // except according to those terms.
 
 
-#![crate_name = "rustc_bitflags"]
 #![feature(associated_consts)]
-#![crate_type = "rlib"]
 #![no_std]
 #![deny(warnings)]
 #![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
diff --git a/src/librustc_borrowck/lib.rs b/src/librustc_borrowck/lib.rs
index 617326808970b..d2131026ce0d7 100644
--- a/src/librustc_borrowck/lib.rs
+++ b/src/librustc_borrowck/lib.rs
@@ -8,9 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#![crate_name = "rustc_borrowck"]
-#![crate_type = "dylib"]
-#![crate_type = "rlib"]
 #![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/")]
diff --git a/src/librustc_const_eval/lib.rs b/src/librustc_const_eval/lib.rs
index 8142829e81601..93e9e8d5553fa 100644
--- a/src/librustc_const_eval/lib.rs
+++ b/src/librustc_const_eval/lib.rs
@@ -14,9 +14,6 @@
 //!
 //! This API is completely unstable and subject to change.
 
-#![crate_name = "rustc_const_eval"]
-#![crate_type = "dylib"]
-#![crate_type = "rlib"]
 #![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/")]
diff --git a/src/librustc_const_math/lib.rs b/src/librustc_const_math/lib.rs
index 528170781ea75..1542f83952b40 100644
--- a/src/librustc_const_math/lib.rs
+++ b/src/librustc_const_math/lib.rs
@@ -14,9 +14,6 @@
 //!
 //! This API is completely unstable and subject to change.
 
-#![crate_name = "rustc_const_math"]
-#![crate_type = "dylib"]
-#![crate_type = "rlib"]
 #![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/")]
diff --git a/src/librustc_data_structures/lib.rs b/src/librustc_data_structures/lib.rs
index 83cd5cef00cfe..a928c5c161999 100644
--- a/src/librustc_data_structures/lib.rs
+++ b/src/librustc_data_structures/lib.rs
@@ -16,9 +16,6 @@
 //!
 //! This API is completely unstable and subject to change.
 
-#![crate_name = "rustc_data_structures"]
-#![crate_type = "dylib"]
-#![crate_type = "rlib"]
 #![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/")]
diff --git a/src/librustc_driver/lib.rs b/src/librustc_driver/lib.rs
index c5f89e861fa13..3f222c13378b6 100644
--- a/src/librustc_driver/lib.rs
+++ b/src/librustc_driver/lib.rs
@@ -14,9 +14,6 @@
 //!
 //! This API is completely unstable and subject to change.
 
-#![crate_name = "rustc_driver"]
-#![crate_type = "dylib"]
-#![crate_type = "rlib"]
 #![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/")]
diff --git a/src/librustc_errors/lib.rs b/src/librustc_errors/lib.rs
index 8d5e9e776ed23..ef34ab51d1e1a 100644
--- a/src/librustc_errors/lib.rs
+++ b/src/librustc_errors/lib.rs
@@ -8,9 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#![crate_name = "rustc_errors"]
-#![crate_type = "dylib"]
-#![crate_type = "rlib"]
 #![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/")]
diff --git a/src/librustc_incremental/lib.rs b/src/librustc_incremental/lib.rs
index 70f967d50b0e1..83999ca33bea9 100644
--- a/src/librustc_incremental/lib.rs
+++ b/src/librustc_incremental/lib.rs
@@ -10,9 +10,6 @@
 
 //! Support for serializing the dep-graph and reloading it.
 
-#![crate_name = "rustc_incremental"]
-#![crate_type = "dylib"]
-#![crate_type = "rlib"]
 #![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/")]
diff --git a/src/librustc_lint/lib.rs b/src/librustc_lint/lib.rs
index 9870842a28e38..848bbfdf6ab55 100644
--- a/src/librustc_lint/lib.rs
+++ b/src/librustc_lint/lib.rs
@@ -19,9 +19,6 @@
 //!
 //! This API is completely unstable and subject to change.
 
-#![crate_name = "rustc_lint"]
-#![crate_type = "dylib"]
-#![crate_type = "rlib"]
 #![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/")]
diff --git a/src/librustc_llvm/lib.rs b/src/librustc_llvm/lib.rs
index 790d493f1914c..59ae3940f15c0 100644
--- a/src/librustc_llvm/lib.rs
+++ b/src/librustc_llvm/lib.rs
@@ -13,9 +13,6 @@
 #![allow(non_snake_case)]
 #![allow(dead_code)]
 
-#![crate_name = "rustc_llvm"]
-#![crate_type = "dylib"]
-#![crate_type = "rlib"]
 #![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/")]
diff --git a/src/librustc_metadata/lib.rs b/src/librustc_metadata/lib.rs
index 56c150fd4c82f..480ff99854dd4 100644
--- a/src/librustc_metadata/lib.rs
+++ b/src/librustc_metadata/lib.rs
@@ -8,9 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#![crate_name = "rustc_metadata"]
-#![crate_type = "dylib"]
-#![crate_type = "rlib"]
 #![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/")]
diff --git a/src/librustc_mir/lib.rs b/src/librustc_mir/lib.rs
index 014705bf32fa8..60210f9e6cdd7 100644
--- a/src/librustc_mir/lib.rs
+++ b/src/librustc_mir/lib.rs
@@ -14,9 +14,6 @@ Rust MIR: a lowered representation of Rust. Also: an experiment!
 
 */
 
-#![crate_name = "rustc_mir"]
-#![crate_type = "rlib"]
-#![crate_type = "dylib"]
 #![deny(warnings)]
 
 #![feature(associated_consts)]
diff --git a/src/librustc_passes/lib.rs b/src/librustc_passes/lib.rs
index 97f0022b8db8d..77c4f36b0e834 100644
--- a/src/librustc_passes/lib.rs
+++ b/src/librustc_passes/lib.rs
@@ -14,9 +14,6 @@
 //!
 //! This API is completely unstable and subject to change.
 
-#![crate_name = "rustc_passes"]
-#![crate_type = "dylib"]
-#![crate_type = "rlib"]
 #![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/")]
diff --git a/src/librustc_platform_intrinsics/lib.rs b/src/librustc_platform_intrinsics/lib.rs
index 21dd360c9bb74..76bf35256e23c 100644
--- a/src/librustc_platform_intrinsics/lib.rs
+++ b/src/librustc_platform_intrinsics/lib.rs
@@ -8,10 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#![crate_name = "rustc_platform_intrinsics"]
 #![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
-#![crate_type = "dylib"]
-#![crate_type = "rlib"]
 #![cfg_attr(stage0, feature(staged_api))]
 #![deny(warnings)]
 #![allow(bad_style)]
diff --git a/src/librustc_plugin/lib.rs b/src/librustc_plugin/lib.rs
index 16ab593e47a72..90d58b66de71a 100644
--- a/src/librustc_plugin/lib.rs
+++ b/src/librustc_plugin/lib.rs
@@ -50,9 +50,6 @@
 //! See the [Plugins Chapter](../../book/compiler-plugins.html) of the book
 //! for more examples.
 
-#![crate_name = "rustc_plugin"]
-#![crate_type = "dylib"]
-#![crate_type = "rlib"]
 #![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/")]
diff --git a/src/librustc_privacy/lib.rs b/src/librustc_privacy/lib.rs
index 153da91db68f8..9fe4e07c5f454 100644
--- a/src/librustc_privacy/lib.rs
+++ b/src/librustc_privacy/lib.rs
@@ -8,9 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#![crate_name = "rustc_privacy"]
-#![crate_type = "dylib"]
-#![crate_type = "rlib"]
 #![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/")]
diff --git a/src/librustc_resolve/lib.rs b/src/librustc_resolve/lib.rs
index b77d5a2f71f9e..4756869861d51 100644
--- a/src/librustc_resolve/lib.rs
+++ b/src/librustc_resolve/lib.rs
@@ -8,9 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#![crate_name = "rustc_resolve"]
-#![crate_type = "dylib"]
-#![crate_type = "rlib"]
 #![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/")]
diff --git a/src/librustc_save_analysis/lib.rs b/src/librustc_save_analysis/lib.rs
index b74d3982d61c5..57589fa6b7159 100644
--- a/src/librustc_save_analysis/lib.rs
+++ b/src/librustc_save_analysis/lib.rs
@@ -8,9 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#![crate_name = "rustc_save_analysis"]
-#![crate_type = "dylib"]
-#![crate_type = "rlib"]
 #![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/")]
diff --git a/src/librustc_trans/lib.rs b/src/librustc_trans/lib.rs
index 71fb2e5fb202a..2f27ee6be3fe3 100644
--- a/src/librustc_trans/lib.rs
+++ b/src/librustc_trans/lib.rs
@@ -14,9 +14,6 @@
 //!
 //! This API is completely unstable and subject to change.
 
-#![crate_name = "rustc_trans"]
-#![crate_type = "dylib"]
-#![crate_type = "rlib"]
 #![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/")]
diff --git a/src/librustc_typeck/lib.rs b/src/librustc_typeck/lib.rs
index 06cb9f948c9b3..2c2087cbcec27 100644
--- a/src/librustc_typeck/lib.rs
+++ b/src/librustc_typeck/lib.rs
@@ -63,9 +63,6 @@ This API is completely unstable and subject to change.
 
 */
 
-#![crate_name = "rustc_typeck"]
-#![crate_type = "dylib"]
-#![crate_type = "rlib"]
 #![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/")]
diff --git a/src/librustdoc/lib.rs b/src/librustdoc/lib.rs
index 380ee9c06a7d4..691211b91c3bc 100644
--- a/src/librustdoc/lib.rs
+++ b/src/librustdoc/lib.rs
@@ -8,9 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#![crate_name = "rustdoc"]
-#![crate_type = "dylib"]
-#![crate_type = "rlib"]
 #![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/",
diff --git a/src/libserialize/lib.rs b/src/libserialize/lib.rs
index 4eb2cad5c91b9..69d4807566acb 100644
--- a/src/libserialize/lib.rs
+++ b/src/libserialize/lib.rs
@@ -14,12 +14,9 @@
 Core encoding and decoding interfaces.
 */
 
-#![crate_name = "serialize"]
 #![cfg_attr(stage0, unstable(feature = "rustc_private",
             reason = "deprecated in favor of rustc-serialize on crates.io",
             issue = "27812"))]
-#![crate_type = "rlib"]
-#![crate_type = "dylib"]
 #![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/",
diff --git a/src/libstd/lib.rs b/src/libstd/lib.rs
index b0820d6f05a05..8f5bcc0273666 100644
--- a/src/libstd/lib.rs
+++ b/src/libstd/lib.rs
@@ -209,10 +209,7 @@
 //! [other]: #what-is-in-the-standard-library-documentation
 //! [primitive types]: ../book/first-edition/primitive-types.html
 
-#![crate_name = "std"]
 #![stable(feature = "rust1", since = "1.0.0")]
-#![crate_type = "rlib"]
-#![crate_type = "dylib"]
 #![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/",
diff --git a/src/libstd_unicode/lib.rs b/src/libstd_unicode/lib.rs
index d63878a7a7c24..9184eeb389840 100644
--- a/src/libstd_unicode/lib.rs
+++ b/src/libstd_unicode/lib.rs
@@ -20,9 +20,7 @@
 //! provide for basic string-related manipulations. This crate does not
 //! (yet) aim to provide a full set of Unicode tables.
 
-#![crate_name = "std_unicode"]
 #![unstable(feature = "unicode", issue = "27783")]
-#![crate_type = "rlib"]
 #![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/",
diff --git a/src/libsyntax/lib.rs b/src/libsyntax/lib.rs
index 32dafcdb582f0..2c3bd6870c7ba 100644
--- a/src/libsyntax/lib.rs
+++ b/src/libsyntax/lib.rs
@@ -14,9 +14,6 @@
 //!
 //! This API is completely unstable and subject to change.
 
-#![crate_name = "syntax"]
-#![crate_type = "dylib"]
-#![crate_type = "rlib"]
 #![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/",
diff --git a/src/libsyntax_ext/lib.rs b/src/libsyntax_ext/lib.rs
index 60f5d24ac9755..0b8c27b661fda 100644
--- a/src/libsyntax_ext/lib.rs
+++ b/src/libsyntax_ext/lib.rs
@@ -10,9 +10,6 @@
 
 //! Syntax extensions in the Rust compiler.
 
-#![crate_name = "syntax_ext"]
-#![crate_type = "dylib"]
-#![crate_type = "rlib"]
 #![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/")]
diff --git a/src/libsyntax_pos/lib.rs b/src/libsyntax_pos/lib.rs
index 25f74aeecf404..8506dac7a8231 100644
--- a/src/libsyntax_pos/lib.rs
+++ b/src/libsyntax_pos/lib.rs
@@ -14,9 +14,6 @@
 //!
 //! This API is completely unstable and subject to change.
 
-#![crate_name = "syntax_pos"]
-#![crate_type = "dylib"]
-#![crate_type = "rlib"]
 #![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/")]
diff --git a/src/libterm/lib.rs b/src/libterm/lib.rs
index eb0ee6ba154a1..05b45619b678b 100644
--- a/src/libterm/lib.rs
+++ b/src/libterm/lib.rs
@@ -40,9 +40,6 @@
 //! [win]: http://msdn.microsoft.com/en-us/library/windows/desktop/ms682010%28v=vs.85%29.aspx
 //! [ti]: https://en.wikipedia.org/wiki/Terminfo
 
-#![crate_name = "term"]
-#![crate_type = "rlib"]
-#![crate_type = "dylib"]
 #![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/",
diff --git a/src/libtest/lib.rs b/src/libtest/lib.rs
index ef048ac8ca355..5f450394198fc 100644
--- a/src/libtest/lib.rs
+++ b/src/libtest/lib.rs
@@ -23,10 +23,7 @@
 // running tests while providing a base that other test frameworks may
 // build off of.
 
-#![crate_name = "test"]
 #![unstable(feature = "test", issue = "27812")]
-#![crate_type = "rlib"]
-#![crate_type = "dylib"]
 #![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/",
diff --git a/src/libunwind/lib.rs b/src/libunwind/lib.rs
index d4d52322adab0..ea9ee6f5c5f25 100644
--- a/src/libunwind/lib.rs
+++ b/src/libunwind/lib.rs
@@ -9,8 +9,6 @@
 // except according to those terms.
 
 #![no_std]
-#![crate_name = "unwind"]
-#![crate_type = "rlib"]
 #![unstable(feature = "panic_unwind", issue = "32837")]
 #![deny(warnings)]