warning: unknown lint: `x5400`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:45:9
   |
LL | #![warn(x5400)]
   |         ^^^^^
   |
note: the lint level is defined here
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:36:28
   |
LL | #![warn(unused_attributes, unknown_lints)]
   |                            ^^^^^^^^^^^^^

warning: unknown lint: `x5300`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:46:10
   |
LL | #![allow(x5300)]
   |          ^^^^^

warning: unknown lint: `x5200`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:47:11
   |
LL | #![forbid(x5200)]
   |           ^^^^^

warning: unknown lint: `x5100`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:48:9
   |
LL | #![deny(x5100)]
   |         ^^^^^

warning: unknown lint: `x5400`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:105:8
   |
LL | #[warn(x5400)]
   |        ^^^^^

warning: unknown lint: `x5400`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:108:25
   |
LL |     mod inner { #![warn(x5400)] }
   |                         ^^^^^

warning: unknown lint: `x5400`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:111:12
   |
LL |     #[warn(x5400)] fn f() { }
   |            ^^^^^

warning: unknown lint: `x5400`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:114:12
   |
LL |     #[warn(x5400)] struct S;
   |            ^^^^^

warning: unknown lint: `x5400`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:117:12
   |
LL |     #[warn(x5400)] type T = S;
   |            ^^^^^

warning: unknown lint: `x5400`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:120:12
   |
LL |     #[warn(x5400)] impl S { }
   |            ^^^^^

warning: unknown lint: `x5300`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:124:9
   |
LL | #[allow(x5300)]
   |         ^^^^^

warning: unknown lint: `x5300`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:127:26
   |
LL |     mod inner { #![allow(x5300)] }
   |                          ^^^^^

warning: unknown lint: `x5300`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:130:13
   |
LL |     #[allow(x5300)] fn f() { }
   |             ^^^^^

warning: unknown lint: `x5300`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:133:13
   |
LL |     #[allow(x5300)] struct S;
   |             ^^^^^

warning: unknown lint: `x5300`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:136:13
   |
LL |     #[allow(x5300)] type T = S;
   |             ^^^^^

warning: unknown lint: `x5300`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:139:13
   |
LL |     #[allow(x5300)] impl S { }
   |             ^^^^^

warning: unknown lint: `x5200`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:143:10
   |
LL | #[forbid(x5200)]
   |          ^^^^^

warning: unknown lint: `x5200`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:146:27
   |
LL |     mod inner { #![forbid(x5200)] }
   |                           ^^^^^

warning: unknown lint: `x5200`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:149:14
   |
LL |     #[forbid(x5200)] fn f() { }
   |              ^^^^^

warning: unknown lint: `x5200`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:152:14
   |
LL |     #[forbid(x5200)] struct S;
   |              ^^^^^

warning: unknown lint: `x5200`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:155:14
   |
LL |     #[forbid(x5200)] type T = S;
   |              ^^^^^

warning: unknown lint: `x5200`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:158:14
   |
LL |     #[forbid(x5200)] impl S { }
   |              ^^^^^

warning: unknown lint: `x5100`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:162:8
   |
LL | #[deny(x5100)]
   |        ^^^^^

warning: unknown lint: `x5100`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:165:25
   |
LL |     mod inner { #![deny(x5100)] }
   |                         ^^^^^

warning: unknown lint: `x5100`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:168:12
   |
LL |     #[deny(x5100)] fn f() { }
   |            ^^^^^

warning: unknown lint: `x5100`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:171:12
   |
LL |     #[deny(x5100)] struct S;
   |            ^^^^^

warning: unknown lint: `x5100`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:174:12
   |
LL |     #[deny(x5100)] type T = S;
   |            ^^^^^

warning: unknown lint: `x5100`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:177:12
   |
LL |     #[deny(x5100)] impl S { }
   |            ^^^^^

warning: `#[macro_escape]` is a deprecated synonym for `#[macro_use]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:466:1
   |
LL | #[macro_escape]
   | ^^^^^^^^^^^^^^^

warning: `#[macro_escape]` is a deprecated synonym for `#[macro_use]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:469:17
   |
LL |     mod inner { #![macro_escape] }
   |                 ^^^^^^^^^^^^^^^^
   |
   = help: try an outer attribute: `#[macro_use]`

warning: use of deprecated attribute `plugin_registrar`: compiler plugins are deprecated. See https://github.com/rust-lang/rust/pull/64675
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:221:17
   |
LL |     mod inner { #![plugin_registrar] }
   |                 ^^^^^^^^^^^^^^^^^^^^ help: may be removed in a future compiler version
   |
   = note: `#[warn(deprecated)]` on by default

warning: use of deprecated attribute `plugin_registrar`: compiler plugins are deprecated. See https://github.com/rust-lang/rust/pull/64675
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:227:5
   |
LL |     #[plugin_registrar] struct S;
   |     ^^^^^^^^^^^^^^^^^^^ help: may be removed in a future compiler version

warning: use of deprecated attribute `plugin_registrar`: compiler plugins are deprecated. See https://github.com/rust-lang/rust/pull/64675
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:231:5
   |
LL |     #[plugin_registrar] type T = S;
   |     ^^^^^^^^^^^^^^^^^^^ help: may be removed in a future compiler version

warning: use of deprecated attribute `plugin_registrar`: compiler plugins are deprecated. See https://github.com/rust-lang/rust/pull/64675
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:235:5
   |
LL |     #[plugin_registrar] impl S { }
   |     ^^^^^^^^^^^^^^^^^^^ help: may be removed in a future compiler version

warning: use of deprecated attribute `plugin_registrar`: compiler plugins are deprecated. See https://github.com/rust-lang/rust/pull/64675
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:217:1
   |
LL | #[plugin_registrar]
   | ^^^^^^^^^^^^^^^^^^^ help: may be removed in a future compiler version

warning: use of deprecated attribute `plugin_registrar`: compiler plugins are deprecated. See https://github.com/rust-lang/rust/pull/64675
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:40:1
   |
LL | #![plugin_registrar]
   | ^^^^^^^^^^^^^^^^^^^^ help: may be removed in a future compiler version

warning: use of deprecated attribute `crate_id`: no longer used.
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:91:1
   |
LL | #![crate_id = "10"]
   | ^^^^^^^^^^^^^^^^^^^ help: remove this attribute

warning: use of deprecated attribute `no_start`: no longer used.
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:96:1
   |
LL | #![no_start]
   | ^^^^^^^^^^^^ help: remove this attribute

warning: the feature `rust1` has been stable since 1.0.0 and no longer requires an attribute to enable
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:94:12
   |
LL | #![feature(rust1)]
   |            ^^^^^
   |
   = note: `#[warn(stable_features)]` on by default

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:185:5
   |
LL |     #[macro_use] fn f() { }
   |     ^^^^^^^^^^^^
   |
note: the lint level is defined here
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:36:9
   |
LL | #![warn(unused_attributes, unknown_lints)]
   |         ^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:188:5
   |
LL |     #[macro_use] struct S;
   |     ^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:191:5
   |
LL |     #[macro_use] type T = S;
   |     ^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:194:5
   |
LL |     #[macro_use] impl S { }
   |     ^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:201:17
   |
LL |     mod inner { #![macro_export] }
   |                 ^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:204:5
   |
LL |     #[macro_export] fn f() { }
   |     ^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:207:5
   |
LL |     #[macro_export] struct S;
   |     ^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:210:5
   |
LL |     #[macro_export] type T = S;
   |     ^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:213:5
   |
LL |     #[macro_export] impl S { }
   |     ^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:198:1
   |
LL | #[macro_export]
   | ^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:221:17
   |
LL |     mod inner { #![plugin_registrar] }
   |                 ^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:227:5
   |
LL |     #[plugin_registrar] struct S;
   |     ^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:231:5
   |
LL |     #[plugin_registrar] type T = S;
   |     ^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:235:5
   |
LL |     #[plugin_registrar] impl S { }
   |     ^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:217:1
   |
LL | #[plugin_registrar]
   | ^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:243:17
   |
LL |     mod inner { #![main] }
   |                 ^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:248:5
   |
LL |     #[main] struct S;
   |     ^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:251:5
   |
LL |     #[main] type T = S;
   |     ^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:254:5
   |
LL |     #[main] impl S { }
   |     ^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:240:1
   |
LL | #[main]
   | ^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:261:17
   |
LL |     mod inner { #![start] }
   |                 ^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:266:5
   |
LL |     #[start] struct S;
   |     ^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:269:5
   |
LL |     #[start] type T = S;
   |     ^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:272:5
   |
LL |     #[start] impl S { }
   |     ^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:258:1
   |
LL | #[start]
   | ^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:325:5
   |
LL |     #[path = "3800"] fn f() { }
   |     ^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:328:5
   |
LL |     #[path = "3800"]  struct S;
   |     ^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:331:5
   |
LL |     #[path = "3800"] type T = S;
   |     ^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:334:5
   |
LL |     #[path = "3800"] impl S { }
   |     ^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:341:17
   |
LL |     mod inner { #![automatically_derived] }
   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:344:5
   |
LL |     #[automatically_derived] fn f() { }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:347:5
   |
LL |     #[automatically_derived] struct S;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:350:5
   |
LL |     #[automatically_derived] type T = S;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:353:5
   |
LL |     #[automatically_derived] impl S { }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:338:1
   |
LL | #[automatically_derived]
   | ^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:373:17
   |
LL |     mod inner { #![no_link] }
   |                 ^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:376:5
   |
LL |     #[no_link] fn f() { }
   |     ^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:379:5
   |
LL |     #[no_link] struct S;
   |     ^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:382:5
   |
LL |     #[no_link]type T = S;
   |     ^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:385:5
   |
LL |     #[no_link] impl S { }
   |     ^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:370:1
   |
LL | #[no_link]
   | ^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:392:17
   |
LL |     mod inner { #![should_panic] }
   |                 ^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:395:5
   |
LL |     #[should_panic] fn f() { }
   |     ^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:398:5
   |
LL |     #[should_panic] struct S;
   |     ^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:401:5
   |
LL |     #[should_panic] type T = S;
   |     ^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:404:5
   |
LL |     #[should_panic] impl S { }
   |     ^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:389:1
   |
LL | #[should_panic]
   | ^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:411:17
   |
LL |     mod inner { #![ignore] }
   |                 ^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:414:5
   |
LL |     #[ignore] fn f() { }
   |     ^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:417:5
   |
LL |     #[ignore] struct S;
   |     ^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:420:5
   |
LL |     #[ignore] type T = S;
   |     ^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:423:5
   |
LL |     #[ignore] impl S { }
   |     ^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:408:1
   |
LL | #[ignore]
   | ^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:430:17
   |
LL |     mod inner { #![no_implicit_prelude] }
   |                 ^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:433:5
   |
LL |     #[no_implicit_prelude] fn f() { }
   |     ^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:436:5
   |
LL |     #[no_implicit_prelude] struct S;
   |     ^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:439:5
   |
LL |     #[no_implicit_prelude] type T = S;
   |     ^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:442:5
   |
LL |     #[no_implicit_prelude] impl S { }
   |     ^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:427:1
   |
LL | #[no_implicit_prelude]
   | ^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:449:17
   |
LL |     mod inner { #![reexport_test_harness_main="2900"] }
   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:452:5
   |
LL |     #[reexport_test_harness_main = "2900"] fn f() { }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:455:5
   |
LL |     #[reexport_test_harness_main = "2900"] struct S;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:458:5
   |
LL |     #[reexport_test_harness_main = "2900"] type T = S;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:461:5
   |
LL |     #[reexport_test_harness_main = "2900"] impl S { }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:446:1
   |
LL | #[reexport_test_harness_main = "2900"]
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:472:5
   |
LL |     #[macro_escape] fn f() { }
   |     ^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:475:5
   |
LL |     #[macro_escape] struct S;
   |     ^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:478:5
   |
LL |     #[macro_escape] type T = S;
   |     ^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:481:5
   |
LL |     #[macro_escape] impl S { }
   |     ^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:489:17
   |
LL |     mod inner { #![no_std] }
   |                 ^^^^^^^^^^

warning: crate-level attribute should be in the root module
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:489:17
   |
LL |     mod inner { #![no_std] }
   |                 ^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:493:5
   |
LL |     #[no_std] fn f() { }
   |     ^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:493:5
   |
LL |     #[no_std] fn f() { }
   |     ^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:497:5
   |
LL |     #[no_std] struct S;
   |     ^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:497:5
   |
LL |     #[no_std] struct S;
   |     ^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:501:5
   |
LL |     #[no_std] type T = S;
   |     ^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:501:5
   |
LL |     #[no_std] type T = S;
   |     ^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:505:5
   |
LL |     #[no_std] impl S { }
   |     ^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:505:5
   |
LL |     #[no_std] impl S { }
   |     ^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:485:1
   |
LL | #[no_std]
   | ^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:485:1
   |
LL | #[no_std]
   | ^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:644:17
   |
LL |     mod inner { #![crate_name="0900"] }
   |                 ^^^^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be in the root module
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:644:17
   |
LL |     mod inner { #![crate_name="0900"] }
   |                 ^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:648:5
   |
LL |     #[crate_name = "0900"] fn f() { }
   |     ^^^^^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:648:5
   |
LL |     #[crate_name = "0900"] fn f() { }
   |     ^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:652:5
   |
LL |     #[crate_name = "0900"] struct S;
   |     ^^^^^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:652:5
   |
LL |     #[crate_name = "0900"] struct S;
   |     ^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:656:5
   |
LL |     #[crate_name = "0900"] type T = S;
   |     ^^^^^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:656:5
   |
LL |     #[crate_name = "0900"] type T = S;
   |     ^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:660:5
   |
LL |     #[crate_name = "0900"] impl S { }
   |     ^^^^^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:660:5
   |
LL |     #[crate_name = "0900"] impl S { }
   |     ^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:640:1
   |
LL | #[crate_name = "0900"]
   | ^^^^^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:640:1
   |
LL | #[crate_name = "0900"]
   | ^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:669:17
   |
LL |     mod inner { #![crate_type="0800"] }
   |                 ^^^^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be in the root module
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:669:17
   |
LL |     mod inner { #![crate_type="0800"] }
   |                 ^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:673:5
   |
LL |     #[crate_type = "0800"] fn f() { }
   |     ^^^^^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:673:5
   |
LL |     #[crate_type = "0800"] fn f() { }
   |     ^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:677:5
   |
LL |     #[crate_type = "0800"] struct S;
   |     ^^^^^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:677:5
   |
LL |     #[crate_type = "0800"] struct S;
   |     ^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:681:5
   |
LL |     #[crate_type = "0800"] type T = S;
   |     ^^^^^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:681:5
   |
LL |     #[crate_type = "0800"] type T = S;
   |     ^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:685:5
   |
LL |     #[crate_type = "0800"] impl S { }
   |     ^^^^^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:685:5
   |
LL |     #[crate_type = "0800"] impl S { }
   |     ^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:665:1
   |
LL | #[crate_type = "0800"]
   | ^^^^^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:665:1
   |
LL | #[crate_type = "0800"]
   | ^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:694:17
   |
LL |     mod inner { #![feature(x0600)] }
   |                 ^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be in the root module
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:694:17
   |
LL |     mod inner { #![feature(x0600)] }
   |                 ^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:698:5
   |
LL |     #[feature(x0600)] fn f() { }
   |     ^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:698:5
   |
LL |     #[feature(x0600)] fn f() { }
   |     ^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:702:5
   |
LL |     #[feature(x0600)] struct S;
   |     ^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:702:5
   |
LL |     #[feature(x0600)] struct S;
   |     ^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:706:5
   |
LL |     #[feature(x0600)] type T = S;
   |     ^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:706:5
   |
LL |     #[feature(x0600)] type T = S;
   |     ^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:710:5
   |
LL |     #[feature(x0600)] impl S { }
   |     ^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:710:5
   |
LL |     #[feature(x0600)] impl S { }
   |     ^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:690:1
   |
LL | #[feature(x0600)]
   | ^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:690:1
   |
LL | #[feature(x0600)]
   | ^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:720:17
   |
LL |     mod inner { #![no_main] }
   |                 ^^^^^^^^^^^

warning: crate-level attribute should be in the root module
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:720:17
   |
LL |     mod inner { #![no_main] }
   |                 ^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:724:5
   |
LL |     #[no_main] fn f() { }
   |     ^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:724:5
   |
LL |     #[no_main] fn f() { }
   |     ^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:728:5
   |
LL |     #[no_main] struct S;
   |     ^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:728:5
   |
LL |     #[no_main] struct S;
   |     ^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:732:5
   |
LL |     #[no_main] type T = S;
   |     ^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:732:5
   |
LL |     #[no_main] type T = S;
   |     ^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:736:5
   |
LL |     #[no_main] impl S { }
   |     ^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:736:5
   |
LL |     #[no_main] impl S { }
   |     ^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:716:1
   |
LL | #[no_main]
   | ^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:716:1
   |
LL | #[no_main]
   | ^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:758:17
   |
LL |     mod inner { #![recursion_limit="0200"] }
   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be in the root module
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:758:17
   |
LL |     mod inner { #![recursion_limit="0200"] }
   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:762:5
   |
LL |     #[recursion_limit="0200"] fn f() { }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:762:5
   |
LL |     #[recursion_limit="0200"] fn f() { }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:766:5
   |
LL |     #[recursion_limit="0200"] struct S;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:766:5
   |
LL |     #[recursion_limit="0200"] struct S;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:770:5
   |
LL |     #[recursion_limit="0200"] type T = S;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:770:5
   |
LL |     #[recursion_limit="0200"] type T = S;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:774:5
   |
LL |     #[recursion_limit="0200"] impl S { }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:774:5
   |
LL |     #[recursion_limit="0200"] impl S { }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:754:1
   |
LL | #[recursion_limit="0200"]
   | ^^^^^^^^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:754:1
   |
LL | #[recursion_limit="0200"]
   | ^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:783:17
   |
LL |     mod inner { #![type_length_limit="0100"] }
   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be in the root module
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:783:17
   |
LL |     mod inner { #![type_length_limit="0100"] }
   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:787:5
   |
LL |     #[type_length_limit="0100"] fn f() { }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:787:5
   |
LL |     #[type_length_limit="0100"] fn f() { }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:791:5
   |
LL |     #[type_length_limit="0100"] struct S;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:791:5
   |
LL |     #[type_length_limit="0100"] struct S;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:795:5
   |
LL |     #[type_length_limit="0100"] type T = S;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:795:5
   |
LL |     #[type_length_limit="0100"] type T = S;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:799:5
   |
LL |     #[type_length_limit="0100"] impl S { }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:799:5
   |
LL |     #[type_length_limit="0100"] impl S { }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:779:1
   |
LL | #[type_length_limit="0100"]
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:779:1
   |
LL | #[type_length_limit="0100"]
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:40:1
   |
LL | #![plugin_registrar]
   | ^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:50:1
   |
LL | #![macro_export]
   | ^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:53:1
   |
LL | #![main]
   | ^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:54:1
   |
LL | #![start]
   | ^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:57:1
   |
LL | #![repr()]
   | ^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:59:1
   |
LL | #![path = "3800"]
   | ^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:60:1
   |
LL | #![automatically_derived]
   | ^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:62:1
   |
LL | #![no_link]
   | ^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:64:1
   |
LL | #![should_panic]
   | ^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:65:1
   |
LL | #![ignore]
   | ^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:71:1
   |
LL | #![proc_macro_derive()]
   | ^^^^^^^^^^^^^^^^^^^^^^^

warning: 203 warnings emitted