warning: unknown lint: `x5400`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:53:9
   |
LL | #![warn(x5400)]
   |         ^^^^^
   |
note: the lint level is defined here
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:40:28
   |
LL | #![warn(unused_attributes, unknown_lints)]
   |                            ^^^^^^^^^^^^^

warning: unknown lint: `x5300`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:54:10
   |
LL | #![allow(x5300)]
   |          ^^^^^

warning: unknown lint: `x5200`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:55:11
   |
LL | #![forbid(x5200)]
   |           ^^^^^

warning: unknown lint: `x5100`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:56:9
   |
LL | #![deny(x5100)]
   |         ^^^^^

warning: unknown lint: `x5400`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:111:8
   |
LL | #[warn(x5400)]
   |        ^^^^^

warning: unknown lint: `x5400`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:114:25
   |
LL |     mod inner { #![warn(x5400)] }
   |                         ^^^^^

warning: unknown lint: `x5400`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:117:12
   |
LL |     #[warn(x5400)] fn f() { }
   |            ^^^^^

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

warning: unknown lint: `x5400`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:123:12
   |
LL |     #[warn(x5400)] type T = S;
   |            ^^^^^

warning: unknown lint: `x5400`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:126:12
   |
LL |     #[warn(x5400)] impl S { }
   |            ^^^^^

warning: unknown lint: `x5300`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:130:9
   |
LL | #[allow(x5300)]
   |         ^^^^^

warning: unknown lint: `x5300`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:133:26
   |
LL |     mod inner { #![allow(x5300)] }
   |                          ^^^^^

warning: unknown lint: `x5300`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:136:13
   |
LL |     #[allow(x5300)] fn f() { }
   |             ^^^^^

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

warning: unknown lint: `x5300`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:142:13
   |
LL |     #[allow(x5300)] type T = S;
   |             ^^^^^

warning: unknown lint: `x5300`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:145:13
   |
LL |     #[allow(x5300)] impl S { }
   |             ^^^^^

warning: unknown lint: `x5200`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:149:10
   |
LL | #[forbid(x5200)]
   |          ^^^^^

warning: unknown lint: `x5200`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:152:27
   |
LL |     mod inner { #![forbid(x5200)] }
   |                           ^^^^^

warning: unknown lint: `x5200`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:155:14
   |
LL |     #[forbid(x5200)] fn f() { }
   |              ^^^^^

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

warning: unknown lint: `x5200`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:161:14
   |
LL |     #[forbid(x5200)] type T = S;
   |              ^^^^^

warning: unknown lint: `x5200`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:164:14
   |
LL |     #[forbid(x5200)] impl S { }
   |              ^^^^^

warning: unknown lint: `x5100`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:168:8
   |
LL | #[deny(x5100)]
   |        ^^^^^

warning: unknown lint: `x5100`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:171:25
   |
LL |     mod inner { #![deny(x5100)] }
   |                         ^^^^^

warning: unknown lint: `x5100`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:174:12
   |
LL |     #[deny(x5100)] fn f() { }
   |            ^^^^^

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

warning: unknown lint: `x5100`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:180:12
   |
LL |     #[deny(x5100)] type T = S;
   |            ^^^^^

warning: unknown lint: `x5100`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:183:12
   |
LL |     #[deny(x5100)] impl S { }
   |            ^^^^^

warning: `#[macro_escape]` is a deprecated synonym for `#[macro_use]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:441:17
   |
LL |     mod inner { #![macro_escape] }
   |                 ^^^^^^^^^^^^^^^^
   |
   = help: try an outer attribute: `#[macro_use]`

warning: `#[macro_escape]` is a deprecated synonym for `#[macro_use]`
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:438:1
   |
LL | #[macro_escape]
   | ^^^^^^^^^^^^^^^

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:228:17
   |
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:236:5
   |
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:241:5
   |
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:246:5
   |
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:223:1
   |
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:46:1
   |
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:100:1
   |
LL | #![no_start]
   | ^^^^^^^^^^^^ help: remove this attribute

warning: attribute should be applied to a function or static
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:333:1
   |
LL |   #[no_mangle]
   |   ^^^^^^^^^^^^
...
LL | / mod no_mangle {
LL | |
LL | |     mod inner { #![no_mangle] }
LL | |
...  |
LL | |
LL | | }
   | |_- not a function or static
   |
note: the lint level is defined here
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:40:9
   |
LL | #![warn(unused_attributes, unknown_lints)]
   |         ^^^^^^^^^^^^^^^^^
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

warning: attribute should be applied to a function
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:500:1
   |
LL |   #[cold]
   |   ^^^^^^^
...
LL | / mod cold {
LL | |
LL | |
LL | |     mod inner { #![cold] }
...  |
LL | |
LL | | }
   | |_- not a function
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

warning: attribute should be applied to a foreign function or static
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:529:1
   |
LL |   #[link_name = "1900"]
   |   ^^^^^^^^^^^^^^^^^^^^^
...
LL | / mod link_name {
LL | |
LL | |
LL | |     #[link_name = "1900"]
...  |
LL | |
LL | | }
   | |_- not a foreign function or static
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

warning: attribute should be applied to a function or static
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:568:1
   |
LL |   #[link_section = "1800"]
   |   ^^^^^^^^^^^^^^^^^^^^^^^^
...
LL | / mod link_section {
LL | |
LL | |
LL | |     mod inner { #![link_section="1800"] }
...  |
LL | |
LL | | }
   | |_- not a function or static
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

warning: attribute should be applied to a function
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:69:1
   |
LL | #![cold]
   | ^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

warning: attribute should be applied to a foreign function or static
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:73:1
   |
LL | #![link_name = "1900"]
   | ^^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

warning: attribute should be applied to a function or static
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:76:1
   |
LL | #![link_section = "1800"]
   | ^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

warning: attribute should be applied to a function or static
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:338:17
   |
LL |     mod inner { #![no_mangle] }
   |     ------------^^^^^^^^^^^^^-- not a function or static
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

warning: attribute should be applied to a function or static
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:345:5
   |
LL |     #[no_mangle] struct S;
   |     ^^^^^^^^^^^^ --------- not a function or static
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

warning: attribute should be applied to a function or static
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:350:5
   |
LL |     #[no_mangle] type T = S;
   |     ^^^^^^^^^^^^ ----------- not a function or static
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

warning: attribute should be applied to a function or static
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:355:5
   |
LL |     #[no_mangle] impl S { }
   |     ^^^^^^^^^^^^ ---------- not a function or static
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

warning: attribute should be applied to a function
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:506:17
   |
LL |     mod inner { #![cold] }
   |     ------------^^^^^^^^-- not a function
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

warning: attribute should be applied to a function
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:513:5
   |
LL |     #[cold] struct S;
   |     ^^^^^^^ --------- not a function
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

warning: attribute should be applied to a function
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:518:5
   |
LL |     #[cold] type T = S;
   |     ^^^^^^^ ----------- not a function
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

warning: attribute should be applied to a function
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:523:5
   |
LL |     #[cold] impl S { }
   |     ^^^^^^^ ---------- not a function
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

warning: attribute should be applied to a foreign function or static
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:535:5
   |
LL |     #[link_name = "1900"]
   |     ^^^^^^^^^^^^^^^^^^^^^
...
LL |     extern "C" { }
   |     -------------- not a foreign function or static
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
help: try `#[link(name = "1900")]` instead
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:535:5
   |
LL |     #[link_name = "1900"]
   |     ^^^^^^^^^^^^^^^^^^^^^

warning: attribute should be applied to a foreign function or static
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:542:17
   |
LL |     mod inner { #![link_name="1900"] }
   |     ------------^^^^^^^^^^^^^^^^^^^^-- not a foreign function or static
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

warning: attribute should be applied to a foreign function or static
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:547:5
   |
LL |     #[link_name = "1900"] fn f() { }
   |     ^^^^^^^^^^^^^^^^^^^^^ ---------- not a foreign function or static
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

warning: attribute should be applied to a foreign function or static
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:552:5
   |
LL |     #[link_name = "1900"] struct S;
   |     ^^^^^^^^^^^^^^^^^^^^^ --------- not a foreign function or static
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

warning: attribute should be applied to a foreign function or static
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:557:5
   |
LL |     #[link_name = "1900"] type T = S;
   |     ^^^^^^^^^^^^^^^^^^^^^ ----------- not a foreign function or static
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

warning: attribute should be applied to a foreign function or static
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:562:5
   |
LL |     #[link_name = "1900"] impl S { }
   |     ^^^^^^^^^^^^^^^^^^^^^ ---------- not a foreign function or static
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

warning: attribute should be applied to a function or static
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:574:17
   |
LL |     mod inner { #![link_section="1800"] }
   |     ------------^^^^^^^^^^^^^^^^^^^^^^^-- not a function or static
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

warning: attribute should be applied to a function or static
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:581:5
   |
LL |     #[link_section = "1800"] struct S;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^ --------- not a function or static
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

warning: attribute should be applied to a function or static
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:586:5
   |
LL |     #[link_section = "1800"] type T = S;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^ ----------- not a function or static
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

warning: attribute should be applied to a function or static
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:591:5
   |
LL |     #[link_section = "1800"] impl S { }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^ ---------- not a function or static
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

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:96:12
   |
LL | #![feature(rust1)]
   |            ^^^^^
   |
   = note: `#[warn(stable_features)]` on by default

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:191:5
   |
LL |     #[macro_use] fn f() { }
   |     ^^^^^^^^^^^^

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

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:197:5
   |
LL |     #[macro_use] type T = S;
   |     ^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:200:5
   |
LL |     #[macro_use] impl S { }
   |     ^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:207:17
   |
LL |     mod inner { #![macro_export] }
   |                 ^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:210:5
   |
LL |     #[macro_export] fn f() { }
   |     ^^^^^^^^^^^^^^^

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

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:216:5
   |
LL |     #[macro_export] type T = S;
   |     ^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:219:5
   |
LL |     #[macro_export] impl S { }
   |     ^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:204:1
   |
LL | #[macro_export]
   | ^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:228:17
   |
LL |     mod inner { #![plugin_registrar] }
   |                 ^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:236:5
   |
LL |     #[plugin_registrar] struct S;
   |     ^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:241:5
   |
LL |     #[plugin_registrar] type T = S;
   |     ^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:246:5
   |
LL |     #[plugin_registrar] impl S { }
   |     ^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:223:1
   |
LL | #[plugin_registrar]
   | ^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:301:5
   |
LL |     #[path = "3800"] fn f() { }
   |     ^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:304:5
   |
LL |     #[path = "3800"]  struct S;
   |     ^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:307:5
   |
LL |     #[path = "3800"] type T = S;
   |     ^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:310:5
   |
LL |     #[path = "3800"] impl S { }
   |     ^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:317:17
   |
LL |     mod inner { #![automatically_derived] }
   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:320:5
   |
LL |     #[automatically_derived] fn f() { }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:323:5
   |
LL |     #[automatically_derived] struct S;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:326:5
   |
LL |     #[automatically_derived] type T = S;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:329:5
   |
LL |     #[automatically_derived] impl S { }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:314:1
   |
LL | #[automatically_derived]
   | ^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:364:17
   |
LL |     mod inner { #![should_panic] }
   |                 ^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:367:5
   |
LL |     #[should_panic] fn f() { }
   |     ^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:370:5
   |
LL |     #[should_panic] struct S;
   |     ^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:373:5
   |
LL |     #[should_panic] type T = S;
   |     ^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:376:5
   |
LL |     #[should_panic] impl S { }
   |     ^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:361:1
   |
LL | #[should_panic]
   | ^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:383:17
   |
LL |     mod inner { #![ignore] }
   |                 ^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:386:5
   |
LL |     #[ignore] fn f() { }
   |     ^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:389:5
   |
LL |     #[ignore] struct S;
   |     ^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:392:5
   |
LL |     #[ignore] type T = S;
   |     ^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:395:5
   |
LL |     #[ignore] impl S { }
   |     ^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:380:1
   |
LL | #[ignore]
   | ^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:402:17
   |
LL |     mod inner { #![no_implicit_prelude] }
   |                 ^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:405:5
   |
LL |     #[no_implicit_prelude] fn f() { }
   |     ^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:408:5
   |
LL |     #[no_implicit_prelude] struct S;
   |     ^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:411:5
   |
LL |     #[no_implicit_prelude] type T = S;
   |     ^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:414:5
   |
LL |     #[no_implicit_prelude] impl S { }
   |     ^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:399:1
   |
LL | #[no_implicit_prelude]
   | ^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:421:17
   |
LL |     mod inner { #![reexport_test_harness_main="2900"] }
   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:424:5
   |
LL |     #[reexport_test_harness_main = "2900"] fn f() { }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:427:5
   |
LL |     #[reexport_test_harness_main = "2900"] struct S;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:430:5
   |
LL |     #[reexport_test_harness_main = "2900"] type T = S;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:433:5
   |
LL |     #[reexport_test_harness_main = "2900"] impl S { }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:418:1
   |
LL | #[reexport_test_harness_main = "2900"]
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:445:5
   |
LL |     #[macro_escape] fn f() { }
   |     ^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:448:5
   |
LL |     #[macro_escape] struct S;
   |     ^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:451:5
   |
LL |     #[macro_escape] type T = S;
   |     ^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:454:5
   |
LL |     #[macro_escape] impl S { }
   |     ^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:462:17
   |
LL |     mod inner { #![no_std] }
   |                 ^^^^^^^^^^

warning: crate-level attribute should be in the root module
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:462:17
   |
LL |     mod inner { #![no_std] }
   |                 ^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:466:5
   |
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:466:5
   |
LL |     #[no_std] fn f() { }
   |     ^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:470:5
   |
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:470:5
   |
LL |     #[no_std] struct S;
   |     ^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:474:5
   |
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:474:5
   |
LL |     #[no_std] type T = S;
   |     ^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:478:5
   |
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:478:5
   |
LL |     #[no_std] impl S { }
   |     ^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:458:1
   |
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:458:1
   |
LL | #[no_std]
   | ^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:663:17
   |
LL |     mod inner { #![crate_name="0900"] }
   |                 ^^^^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be in the root module
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:663:17
   |
LL |     mod inner { #![crate_name="0900"] }
   |                 ^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:667:5
   |
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:667:5
   |
LL |     #[crate_name = "0900"] fn f() { }
   |     ^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:671:5
   |
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:671:5
   |
LL |     #[crate_name = "0900"] struct S;
   |     ^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:675:5
   |
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:675:5
   |
LL |     #[crate_name = "0900"] type T = S;
   |     ^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:679:5
   |
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:679:5
   |
LL |     #[crate_name = "0900"] impl S { }
   |     ^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:659:1
   |
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:659:1
   |
LL | #[crate_name = "0900"]
   | ^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:688:17
   |
LL |     mod inner { #![crate_type="0800"] }
   |                 ^^^^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be in the root module
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:688:17
   |
LL |     mod inner { #![crate_type="0800"] }
   |                 ^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:692:5
   |
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:692:5
   |
LL |     #[crate_type = "0800"] fn f() { }
   |     ^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:696:5
   |
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:696:5
   |
LL |     #[crate_type = "0800"] struct S;
   |     ^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:700:5
   |
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:700:5
   |
LL |     #[crate_type = "0800"] type T = S;
   |     ^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:704:5
   |
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:704:5
   |
LL |     #[crate_type = "0800"] impl S { }
   |     ^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:684:1
   |
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:684:1
   |
LL | #[crate_type = "0800"]
   | ^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:713:17
   |
LL |     mod inner { #![feature(x0600)] }
   |                 ^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be in the root module
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:713:17
   |
LL |     mod inner { #![feature(x0600)] }
   |                 ^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:717:5
   |
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:717:5
   |
LL |     #[feature(x0600)] fn f() { }
   |     ^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:721:5
   |
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:721:5
   |
LL |     #[feature(x0600)] struct S;
   |     ^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:725:5
   |
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:725:5
   |
LL |     #[feature(x0600)] type T = S;
   |     ^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:729:5
   |
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:729:5
   |
LL |     #[feature(x0600)] impl S { }
   |     ^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:709:1
   |
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:709:1
   |
LL | #[feature(x0600)]
   | ^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:739:17
   |
LL |     mod inner { #![no_main] }
   |                 ^^^^^^^^^^^

warning: crate-level attribute should be in the root module
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:739:17
   |
LL |     mod inner { #![no_main] }
   |                 ^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:743:5
   |
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:743:5
   |
LL |     #[no_main] fn f() { }
   |     ^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:747:5
   |
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:747:5
   |
LL |     #[no_main] struct S;
   |     ^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:751:5
   |
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:751:5
   |
LL |     #[no_main] type T = S;
   |     ^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:755:5
   |
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:755:5
   |
LL |     #[no_main] impl S { }
   |     ^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:735:1
   |
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:735:1
   |
LL | #[no_main]
   | ^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:777:17
   |
LL |     mod inner { #![recursion_limit="0200"] }
   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be in the root module
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:777:17
   |
LL |     mod inner { #![recursion_limit="0200"] }
   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:781:5
   |
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:781:5
   |
LL |     #[recursion_limit="0200"] fn f() { }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:785:5
   |
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:785:5
   |
LL |     #[recursion_limit="0200"] struct S;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:789:5
   |
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:789:5
   |
LL |     #[recursion_limit="0200"] type T = S;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:793:5
   |
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:793:5
   |
LL |     #[recursion_limit="0200"] impl S { }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:773:1
   |
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:773:1
   |
LL | #[recursion_limit="0200"]
   | ^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:802:17
   |
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:802:17
   |
LL |     mod inner { #![type_length_limit="0100"] }
   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:806:5
   |
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:806:5
   |
LL |     #[type_length_limit="0100"] fn f() { }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:810:5
   |
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:810:5
   |
LL |     #[type_length_limit="0100"] struct S;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:814:5
   |
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:814:5
   |
LL |     #[type_length_limit="0100"] type T = S;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:818:5
   |
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:818:5
   |
LL |     #[type_length_limit="0100"] impl S { }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:798:1
   |
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:798:1
   |
LL | #[type_length_limit="0100"]
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:46:1
   |
LL | #![plugin_registrar]
   | ^^^^^^^^^^^^^^^^^^^^

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

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:61:1
   |
LL | #![ignore]
   | ^^^^^^^^^^

warning: unused attribute
  --> $DIR/issue-43106-gating-of-builtin-attrs.rs:67:1
   |
LL | #![proc_macro_derive()]
   | ^^^^^^^^^^^^^^^^^^^^^^^

warning: 205 warnings emitted