diff --git a/src/ci/docker/dist-various-1/install-x86_64-redox.sh b/src/ci/docker/dist-various-1/install-x86_64-redox.sh
index 339042bb672..dad97922338 100755
--- a/src/ci/docker/dist-various-1/install-x86_64-redox.sh
+++ b/src/ci/docker/dist-various-1/install-x86_64-redox.sh
@@ -1,5 +1,4 @@
 #!/usr/bin/env bash
-# ignore-tidy-linelength
 
 set -ex
 
diff --git a/src/ci/docker/dist-various-2/build-fuchsia-toolchain.sh b/src/ci/docker/dist-various-2/build-fuchsia-toolchain.sh
index ef486075ff9..3b91918288a 100755
--- a/src/ci/docker/dist-various-2/build-fuchsia-toolchain.sh
+++ b/src/ci/docker/dist-various-2/build-fuchsia-toolchain.sh
@@ -1,7 +1,5 @@
 #!/usr/bin/env bash
 
-# ignore-tidy-linelength
-
 set -ex
 source shared.sh
 
diff --git a/src/test/codegen-units/item-collection/cross-crate-closures.rs b/src/test/codegen-units/item-collection/cross-crate-closures.rs
index bd04422c39f..6af344fab15 100644
--- a/src/test/codegen-units/item-collection/cross-crate-closures.rs
+++ b/src/test/codegen-units/item-collection/cross-crate-closures.rs
@@ -3,7 +3,6 @@
 // ignoring this test until MIR codegen has taken over completely
 // ignore-test
 
-// ignore-tidy-linelength
 // compile-flags:-Zprint-mono-items=eager
 
 #![deny(dead_code)]
diff --git a/src/test/codegen-units/item-collection/cross-crate-generic-functions.rs b/src/test/codegen-units/item-collection/cross-crate-generic-functions.rs
index cf7bde4a091..e1991046d43 100644
--- a/src/test/codegen-units/item-collection/cross-crate-generic-functions.rs
+++ b/src/test/codegen-units/item-collection/cross-crate-generic-functions.rs
@@ -1,4 +1,3 @@
-// ignore-tidy-linelength
 // compile-flags:-Zprint-mono-items=eager
 
 #![deny(dead_code)]
diff --git a/src/test/codegen-units/item-collection/cross-crate-trait-method.rs b/src/test/codegen-units/item-collection/cross-crate-trait-method.rs
index 8a19a7bd9f8..442438b64b6 100644
--- a/src/test/codegen-units/item-collection/cross-crate-trait-method.rs
+++ b/src/test/codegen-units/item-collection/cross-crate-trait-method.rs
@@ -1,4 +1,3 @@
-// ignore-tidy-linelength
 // compile-flags:-Zprint-mono-items=eager
 
 #![deny(dead_code)]
diff --git a/src/test/codegen-units/item-collection/function-as-argument.rs b/src/test/codegen-units/item-collection/function-as-argument.rs
index bdf6826f21a..3f61f124d24 100644
--- a/src/test/codegen-units/item-collection/function-as-argument.rs
+++ b/src/test/codegen-units/item-collection/function-as-argument.rs
@@ -1,4 +1,3 @@
-// ignore-tidy-linelength
 // compile-flags:-Zprint-mono-items=eager
 
 #![deny(dead_code)]
diff --git a/src/test/codegen-units/item-collection/generic-functions.rs b/src/test/codegen-units/item-collection/generic-functions.rs
index f879724c9a1..83909704204 100644
--- a/src/test/codegen-units/item-collection/generic-functions.rs
+++ b/src/test/codegen-units/item-collection/generic-functions.rs
@@ -1,4 +1,3 @@
-// ignore-tidy-linelength
 // compile-flags:-Zprint-mono-items=eager
 
 #![deny(dead_code)]
diff --git a/src/test/codegen-units/item-collection/generic-impl.rs b/src/test/codegen-units/item-collection/generic-impl.rs
index 01b4e530183..571bb4fa867 100644
--- a/src/test/codegen-units/item-collection/generic-impl.rs
+++ b/src/test/codegen-units/item-collection/generic-impl.rs
@@ -1,4 +1,3 @@
-// ignore-tidy-linelength
 // compile-flags:-Zprint-mono-items=eager
 
 #![deny(dead_code)]
diff --git a/src/test/codegen-units/item-collection/impl-in-non-instantiated-generic.rs b/src/test/codegen-units/item-collection/impl-in-non-instantiated-generic.rs
index 702ecba321e..e45644cd375 100644
--- a/src/test/codegen-units/item-collection/impl-in-non-instantiated-generic.rs
+++ b/src/test/codegen-units/item-collection/impl-in-non-instantiated-generic.rs
@@ -1,4 +1,3 @@
-// ignore-tidy-linelength
 // compile-flags:-Zprint-mono-items=eager
 
 #![deny(dead_code)]
diff --git a/src/test/codegen-units/item-collection/items-within-generic-items.rs b/src/test/codegen-units/item-collection/items-within-generic-items.rs
index 748b6094a2a..10bc52f6a8d 100644
--- a/src/test/codegen-units/item-collection/items-within-generic-items.rs
+++ b/src/test/codegen-units/item-collection/items-within-generic-items.rs
@@ -1,4 +1,3 @@
-// ignore-tidy-linelength
 // compile-flags:-Zprint-mono-items=eager
 
 #![deny(dead_code)]
diff --git a/src/test/codegen-units/item-collection/non-generic-functions.rs b/src/test/codegen-units/item-collection/non-generic-functions.rs
index e147b54fdaf..26d2fb1b421 100644
--- a/src/test/codegen-units/item-collection/non-generic-functions.rs
+++ b/src/test/codegen-units/item-collection/non-generic-functions.rs
@@ -1,4 +1,3 @@
-// ignore-tidy-linelength
 // compile-flags:-Zprint-mono-items=eager
 
 #![deny(dead_code)]
diff --git a/src/test/codegen-units/item-collection/overloaded-operators.rs b/src/test/codegen-units/item-collection/overloaded-operators.rs
index db91486012d..2358d38942a 100644
--- a/src/test/codegen-units/item-collection/overloaded-operators.rs
+++ b/src/test/codegen-units/item-collection/overloaded-operators.rs
@@ -1,4 +1,3 @@
-// ignore-tidy-linelength
 // compile-flags:-Zprint-mono-items=eager
 
 #![deny(dead_code)]
diff --git a/src/test/codegen-units/item-collection/static-init.rs b/src/test/codegen-units/item-collection/static-init.rs
index 397bccc4bf8..f6005eed43c 100644
--- a/src/test/codegen-units/item-collection/static-init.rs
+++ b/src/test/codegen-units/item-collection/static-init.rs
@@ -1,5 +1,4 @@
 // compile-flags:-Zprint-mono-items=eager
-// ignore-tidy-linelength
 
 #![feature(start)]
 
diff --git a/src/test/codegen-units/item-collection/statics-and-consts.rs b/src/test/codegen-units/item-collection/statics-and-consts.rs
index db2d83aeefa..7e28ba58b63 100644
--- a/src/test/codegen-units/item-collection/statics-and-consts.rs
+++ b/src/test/codegen-units/item-collection/statics-and-consts.rs
@@ -1,4 +1,3 @@
-// ignore-tidy-linelength
 // compile-flags:-Zprint-mono-items=eager
 
 #![deny(dead_code)]
diff --git a/src/test/codegen-units/item-collection/trait-implementations.rs b/src/test/codegen-units/item-collection/trait-implementations.rs
index 004198a624e..f090c0c8d13 100644
--- a/src/test/codegen-units/item-collection/trait-implementations.rs
+++ b/src/test/codegen-units/item-collection/trait-implementations.rs
@@ -1,4 +1,3 @@
-// ignore-tidy-linelength
 // compile-flags:-Zprint-mono-items=eager
 
 #![deny(dead_code)]
diff --git a/src/test/codegen-units/item-collection/trait-method-as-argument.rs b/src/test/codegen-units/item-collection/trait-method-as-argument.rs
index cab4a709134..27ace8e31ad 100644
--- a/src/test/codegen-units/item-collection/trait-method-as-argument.rs
+++ b/src/test/codegen-units/item-collection/trait-method-as-argument.rs
@@ -1,4 +1,3 @@
-// ignore-tidy-linelength
 // compile-flags:-Zprint-mono-items=eager
 
 #![deny(dead_code)]
diff --git a/src/test/codegen-units/item-collection/trait-method-default-impl.rs b/src/test/codegen-units/item-collection/trait-method-default-impl.rs
index ba99d430acc..11f6cc62d49 100644
--- a/src/test/codegen-units/item-collection/trait-method-default-impl.rs
+++ b/src/test/codegen-units/item-collection/trait-method-default-impl.rs
@@ -1,4 +1,3 @@
-// ignore-tidy-linelength
 // compile-flags:-Zprint-mono-items=eager
 
 #![deny(dead_code)]
diff --git a/src/test/codegen-units/item-collection/unreferenced-const-fn.rs b/src/test/codegen-units/item-collection/unreferenced-const-fn.rs
index 5fae72f711d..ec6be0ecf43 100644
--- a/src/test/codegen-units/item-collection/unreferenced-const-fn.rs
+++ b/src/test/codegen-units/item-collection/unreferenced-const-fn.rs
@@ -1,4 +1,3 @@
-// ignore-tidy-linelength
 // compile-flags:-Zprint-mono-items=lazy
 
 #![deny(dead_code)]
diff --git a/src/test/codegen-units/item-collection/unreferenced-inline-function.rs b/src/test/codegen-units/item-collection/unreferenced-inline-function.rs
index 4c8d1215c04..4d095e4d6c7 100644
--- a/src/test/codegen-units/item-collection/unreferenced-inline-function.rs
+++ b/src/test/codegen-units/item-collection/unreferenced-inline-function.rs
@@ -1,4 +1,3 @@
-// ignore-tidy-linelength
 // compile-flags:-Zprint-mono-items=lazy
 
 // N.B., we do not expect *any* monomorphization to be generated here.
diff --git a/src/test/codegen-units/item-collection/unsizing.rs b/src/test/codegen-units/item-collection/unsizing.rs
index 6b2acab7f7b..fd794df3760 100644
--- a/src/test/codegen-units/item-collection/unsizing.rs
+++ b/src/test/codegen-units/item-collection/unsizing.rs
@@ -1,4 +1,3 @@
-// ignore-tidy-linelength
 // compile-flags:-Zprint-mono-items=eager
 // compile-flags:-Zinline-in-all-cgus
 
diff --git a/src/test/codegen-units/item-collection/unused-traits-and-generics.rs b/src/test/codegen-units/item-collection/unused-traits-and-generics.rs
index 598efdbdad1..4a5e294ea0f 100644
--- a/src/test/codegen-units/item-collection/unused-traits-and-generics.rs
+++ b/src/test/codegen-units/item-collection/unused-traits-and-generics.rs
@@ -1,4 +1,3 @@
-// ignore-tidy-linelength
 // compile-flags:-Zprint-mono-items=eager
 
 #![crate_type="lib"]
diff --git a/src/test/codegen-units/partitioning/statics.rs b/src/test/codegen-units/partitioning/statics.rs
index 40483318795..bbded480b0c 100644
--- a/src/test/codegen-units/partitioning/statics.rs
+++ b/src/test/codegen-units/partitioning/statics.rs
@@ -1,4 +1,3 @@
-// ignore-tidy-linelength
 // We specify -Z incremental here because we want to test the partitioning for
 // incremental compilation
 // compile-flags:-Zprint-mono-items=lazy -Zincremental=tmp/partitioning-tests/statics
diff --git a/src/test/codegen/adjustments.rs b/src/test/codegen/adjustments.rs
index b8398f6ac84..ae2ff9994fd 100644
--- a/src/test/codegen/adjustments.rs
+++ b/src/test/codegen/adjustments.rs
@@ -1,5 +1,4 @@
 // compile-flags: -C no-prepopulate-passes
-// ignore-tidy-linelength
 
 #![crate_type = "lib"]
 
diff --git a/src/test/codegen/enum-debug-niche.rs b/src/test/codegen/enum-debug-niche.rs
index 93eebde7b8f..2272488375f 100644
--- a/src/test/codegen/enum-debug-niche.rs
+++ b/src/test/codegen/enum-debug-niche.rs
@@ -2,7 +2,6 @@
 // before 7.0, then backported to the Rust LLVM fork.  It tests that
 // optimized enum debug info accurately reflects the enum layout.
 
-// ignore-tidy-linelength
 // ignore-windows
 // min-system-llvm-version 8.0
 
diff --git a/src/test/codegen/enum-debug-tagged.rs b/src/test/codegen/enum-debug-tagged.rs
index 84976ce97af..3539aae42ea 100644
--- a/src/test/codegen/enum-debug-tagged.rs
+++ b/src/test/codegen/enum-debug-tagged.rs
@@ -2,7 +2,6 @@
 // before 7.0, then backported to the Rust LLVM fork.  It tests that
 // debug info for tagged (ordinary) enums is properly emitted.
 
-// ignore-tidy-linelength
 // ignore-windows
 // min-system-llvm-version 8.0
 
diff --git a/src/test/codegen/generic-debug.rs b/src/test/codegen/generic-debug.rs
index 0bee2a1a868..eea16805c59 100644
--- a/src/test/codegen/generic-debug.rs
+++ b/src/test/codegen/generic-debug.rs
@@ -1,4 +1,3 @@
-// ignore-tidy-linelength
 // ignore-windows
 
 // compile-flags: -g -C no-prepopulate-passes
diff --git a/src/test/codegen/mainsubprogram.rs b/src/test/codegen/mainsubprogram.rs
index d886cb88004..7f1b0e17f87 100644
--- a/src/test/codegen/mainsubprogram.rs
+++ b/src/test/codegen/mainsubprogram.rs
@@ -1,7 +1,6 @@
 // This test depends on a patch that was committed to upstream LLVM
 // before 4.0, formerly backported to the Rust LLVM fork.
 
-// ignore-tidy-linelength
 // ignore-windows
 // ignore-macos
 
diff --git a/src/test/codegen/mainsubprogramstart.rs b/src/test/codegen/mainsubprogramstart.rs
index d91f91ee7ab..b03290af0e3 100644
--- a/src/test/codegen/mainsubprogramstart.rs
+++ b/src/test/codegen/mainsubprogramstart.rs
@@ -1,4 +1,3 @@
-// ignore-tidy-linelength
 // ignore-windows
 // ignore-macos
 
diff --git a/src/test/codegen/noreturn-uninhabited.rs b/src/test/codegen/noreturn-uninhabited.rs
index 1b65da9f287..49f93cf62c7 100644
--- a/src/test/codegen/noreturn-uninhabited.rs
+++ b/src/test/codegen/noreturn-uninhabited.rs
@@ -1,5 +1,4 @@
 // compile-flags: -g -C no-prepopulate-passes
-// ignore-tidy-linelength
 
 #![crate_type = "lib"]
 
diff --git a/src/test/codegen/noreturnflag.rs b/src/test/codegen/noreturnflag.rs
index fc288eb0cf1..95c100571ce 100644
--- a/src/test/codegen/noreturnflag.rs
+++ b/src/test/codegen/noreturnflag.rs
@@ -1,5 +1,4 @@
 // compile-flags: -g -C no-prepopulate-passes
-// ignore-tidy-linelength
 
 #![crate_type = "lib"]
 
diff --git a/src/test/codegen/panic-abort-windows.rs b/src/test/codegen/panic-abort-windows.rs
index e2d942e8699..bbe0d81de3d 100644
--- a/src/test/codegen/panic-abort-windows.rs
+++ b/src/test/codegen/panic-abort-windows.rs
@@ -1,5 +1,3 @@
-// ignore-tidy-linelength
-
 // This test is for *-windows-msvc only.
 // ignore-android
 // ignore-bitrig
diff --git a/src/test/codegen/refs.rs b/src/test/codegen/refs.rs
index 9583730e9dd..cbb99423476 100644
--- a/src/test/codegen/refs.rs
+++ b/src/test/codegen/refs.rs
@@ -1,5 +1,4 @@
 // compile-flags: -C no-prepopulate-passes
-// ignore-tidy-linelength
 
 #![crate_type = "lib"]
 
diff --git a/src/test/codegen/remap_path_prefix/xcrate-generic.rs b/src/test/codegen/remap_path_prefix/xcrate-generic.rs
index 70d29577b2f..30d6112fd02 100644
--- a/src/test/codegen/remap_path_prefix/xcrate-generic.rs
+++ b/src/test/codegen/remap_path_prefix/xcrate-generic.rs
@@ -1,5 +1,4 @@
 // ignore-windows
-// ignore-tidy-linelength
 // compile-flags: -g -C metadata=foo -C no-prepopulate-passes
 // aux-build:xcrate-generic.rs
 
diff --git a/src/test/codegen/vtabletype.rs b/src/test/codegen/vtabletype.rs
index 70b97a67bbc..82d65b101b0 100644
--- a/src/test/codegen/vtabletype.rs
+++ b/src/test/codegen/vtabletype.rs
@@ -1,7 +1,6 @@
 // This test depends on a patch that was committed to upstream LLVM
 // after 5.0, then backported to the Rust LLVM fork.
 
-// ignore-tidy-linelength
 // ignore-windows
 // ignore-macos
 
diff --git a/src/test/debuginfo/enum-thinlto.rs b/src/test/debuginfo/enum-thinlto.rs
index 7f15ed90e67..13577b0587f 100644
--- a/src/test/debuginfo/enum-thinlto.rs
+++ b/src/test/debuginfo/enum-thinlto.rs
@@ -1,5 +1,3 @@
-// ignore-tidy-linelength
-
 // Require LLVM with DW_TAG_variant_part and a gdb that can read it.
 // min-system-llvm-version: 8.0
 // min-gdb-version: 8.2
diff --git a/src/test/debuginfo/generic-enum-with-different-disr-sizes.rs b/src/test/debuginfo/generic-enum-with-different-disr-sizes.rs
index e26294cb730..72d38a6f045 100644
--- a/src/test/debuginfo/generic-enum-with-different-disr-sizes.rs
+++ b/src/test/debuginfo/generic-enum-with-different-disr-sizes.rs
@@ -1,4 +1,3 @@
-// ignore-tidy-linelength
 // ignore-lldb: FIXME(#27089)
 // min-lldb-version: 310
 
diff --git a/src/test/debuginfo/recursive-struct.rs b/src/test/debuginfo/recursive-struct.rs
index 8fb83b7956b..4f75ef4fa9b 100644
--- a/src/test/debuginfo/recursive-struct.rs
+++ b/src/test/debuginfo/recursive-struct.rs
@@ -1,4 +1,3 @@
-// ignore-tidy-linelength
 // ignore-lldb
 
 // Require LLVM with DW_TAG_variant_part and a gdb that can read it.
diff --git a/src/test/debuginfo/unique-enum.rs b/src/test/debuginfo/unique-enum.rs
index 32bd93f1ed2..c440ce059f7 100644
--- a/src/test/debuginfo/unique-enum.rs
+++ b/src/test/debuginfo/unique-enum.rs
@@ -1,5 +1,3 @@
-// ignore-tidy-linelength
-
 // Require LLVM with DW_TAG_variant_part and a gdb and lldb that can
 // read it.
 // min-system-llvm-version: 8.0
diff --git a/src/test/incremental/remapped_paths_cc/auxiliary/extern_crate.rs b/src/test/incremental/remapped_paths_cc/auxiliary/extern_crate.rs
index 52e7f4bd7c7..627b99445ea 100644
--- a/src/test/incremental/remapped_paths_cc/auxiliary/extern_crate.rs
+++ b/src/test/incremental/remapped_paths_cc/auxiliary/extern_crate.rs
@@ -1,5 +1,3 @@
-// ignore-tidy-linelength
-
 //[rpass1] compile-flags: -g
 //[rpass2] compile-flags: -g
 //[rpass3] compile-flags: -g --remap-path-prefix={{src-base}}=/the/src
diff --git a/src/test/mir-opt/basic_assignment.rs b/src/test/mir-opt/basic_assignment.rs
index c771013f728..ca0e9fa811a 100644
--- a/src/test/mir-opt/basic_assignment.rs
+++ b/src/test/mir-opt/basic_assignment.rs
@@ -5,8 +5,6 @@
 // so subtle breakage in them can leave a quite hard-to-find trail of
 // destruction.
 
-// ignore-tidy-linelength
-
 fn main() {
     let nodrop_x = false;
     let nodrop_y;
diff --git a/src/test/mir-opt/nll/named-lifetimes-basic.rs b/src/test/mir-opt/nll/named-lifetimes-basic.rs
index 4833ba19554..2a6c2db03be 100644
--- a/src/test/mir-opt/nll/named-lifetimes-basic.rs
+++ b/src/test/mir-opt/nll/named-lifetimes-basic.rs
@@ -5,7 +5,6 @@
 
 // compile-flags:-Zborrowck=mir -Zverbose
 //                              ^^^^^^^^^ force compiler to dump more region information
-// ignore-tidy-linelength
 
 #![allow(warnings)]
 
diff --git a/src/test/mir-opt/storage_ranges.rs b/src/test/mir-opt/storage_ranges.rs
index 9a22f57116e..c099b1dccb6 100644
--- a/src/test/mir-opt/storage_ranges.rs
+++ b/src/test/mir-opt/storage_ranges.rs
@@ -1,5 +1,3 @@
-// ignore-tidy-linelength
-
 fn main() {
     let a = 0;
     {
diff --git a/src/test/rustdoc/empty-mod-private.rs b/src/test/rustdoc/empty-mod-private.rs
index 12576a1b535..c2a98049a48 100644
--- a/src/test/rustdoc/empty-mod-private.rs
+++ b/src/test/rustdoc/empty-mod-private.rs
@@ -1,4 +1,3 @@
-// ignore-tidy-linelength
 // compile-flags: --document-private-items
 
 // @has 'empty_mod_private/index.html' '//a[@href="foo/index.html"]' 'foo'
diff --git a/src/test/rustdoc/extern-html-root-url.rs b/src/test/rustdoc/extern-html-root-url.rs
index 674d0305f2e..60b7b28ae4a 100644
--- a/src/test/rustdoc/extern-html-root-url.rs
+++ b/src/test/rustdoc/extern-html-root-url.rs
@@ -1,5 +1,3 @@
-// ignore-tidy-linelength
-
 // compile-flags:-Z unstable-options --extern-html-root-url core=https://example.com/core/0.1.0
 
 // @has extern_html_root_url/index.html
diff --git a/src/test/rustdoc/method-list.rs b/src/test/rustdoc/method-list.rs
index f84be3eb3f7..9f24e817fd3 100644
--- a/src/test/rustdoc/method-list.rs
+++ b/src/test/rustdoc/method-list.rs
@@ -1,5 +1,3 @@
-// ignore-tidy-linelength
-
 #![crate_name = "foo"]
 
 // @has foo/struct.Foo.html
diff --git a/src/test/rustdoc/pub-method.rs b/src/test/rustdoc/pub-method.rs
index 01e5141fe25..8e88b2b5901 100644
--- a/src/test/rustdoc/pub-method.rs
+++ b/src/test/rustdoc/pub-method.rs
@@ -1,4 +1,3 @@
-// ignore-tidy-linelength
 // compile-flags: --document-private-items
 
 #![crate_name = "foo"]
diff --git a/src/test/ui/borrowck/two-phase-activation-sharing-interference.rs b/src/test/ui/borrowck/two-phase-activation-sharing-interference.rs
index 55a8ae7a49e..4d77ac915b1 100644
--- a/src/test/ui/borrowck/two-phase-activation-sharing-interference.rs
+++ b/src/test/ui/borrowck/two-phase-activation-sharing-interference.rs
@@ -1,5 +1,3 @@
-// ignore-tidy-linelength
-
 // revisions: nll_target
 
 // The following revisions are disabled due to missing support from two-phase beyond autorefs
diff --git a/src/test/ui/consts/const-array-oob.rs b/src/test/ui/consts/const-array-oob.rs
index 39ef45175f9..1174a76adab 100644
--- a/src/test/ui/consts/const-array-oob.rs
+++ b/src/test/ui/consts/const-array-oob.rs
@@ -1,5 +1,3 @@
-// ignore-tidy-linelength
-
 #![feature(const_indexing)]
 
 const FOO: [usize; 3] = [1, 2, 3];
diff --git a/src/test/ui/deprecation/deprecation-in-future.rs b/src/test/ui/deprecation/deprecation-in-future.rs
index 138d902621c..c4f9fdce749 100644
--- a/src/test/ui/deprecation/deprecation-in-future.rs
+++ b/src/test/ui/deprecation/deprecation-in-future.rs
@@ -1,5 +1,3 @@
-// ignore-tidy-linelength
-
 // run-pass
 
 #![deny(deprecated_in_future)]
diff --git a/src/test/ui/derives/deriving-meta-unknown-trait.rs b/src/test/ui/derives/deriving-meta-unknown-trait.rs
index 2b29f10150b..f4a6f3fd62a 100644
--- a/src/test/ui/derives/deriving-meta-unknown-trait.rs
+++ b/src/test/ui/derives/deriving-meta-unknown-trait.rs
@@ -1,5 +1,3 @@
-// ignore-tidy-linelength
-
 #[derive(Eqr)]
 //~^ ERROR cannot find derive macro `Eqr` in this scope
 struct Foo;
diff --git a/src/test/ui/discrim/discrim-overflow-2.rs b/src/test/ui/discrim/discrim-overflow-2.rs
index 9ff39cd0484..f8f565f4d9c 100644
--- a/src/test/ui/discrim/discrim-overflow-2.rs
+++ b/src/test/ui/discrim/discrim-overflow-2.rs
@@ -1,5 +1,3 @@
-// ignore-tidy-linelength
-
 // Issue 23030: Detect overflowing discriminant
 //
 // Check that we detect the overflow even if enum is not used.
diff --git a/src/test/ui/discrim/discrim-overflow.rs b/src/test/ui/discrim/discrim-overflow.rs
index c612661178c..d8a9dacfa51 100644
--- a/src/test/ui/discrim/discrim-overflow.rs
+++ b/src/test/ui/discrim/discrim-overflow.rs
@@ -1,5 +1,3 @@
-// ignore-tidy-linelength
-
 // Issue 23030: Detect overflowing discriminant
 
 // See also run-pass/discrim-explicit-23030.rs where the suggested
diff --git a/src/test/ui/editions/edition-raw-pointer-method-2015.rs b/src/test/ui/editions/edition-raw-pointer-method-2015.rs
index a538bca75f6..3631415fc5f 100644
--- a/src/test/ui/editions/edition-raw-pointer-method-2015.rs
+++ b/src/test/ui/editions/edition-raw-pointer-method-2015.rs
@@ -1,4 +1,3 @@
-// ignore-tidy-linelength
 // edition:2015
 
 // tests that editions work with the tyvar warning-turned-error
diff --git a/src/test/ui/editions/edition-raw-pointer-method-2018.rs b/src/test/ui/editions/edition-raw-pointer-method-2018.rs
index eabab5e4739..af0b2d6bd4a 100644
--- a/src/test/ui/editions/edition-raw-pointer-method-2018.rs
+++ b/src/test/ui/editions/edition-raw-pointer-method-2018.rs
@@ -1,4 +1,3 @@
-// ignore-tidy-linelength
 // edition:2018
 
 // tests that editions work with the tyvar warning-turned-error
diff --git a/src/test/ui/error-codes/E0375.rs b/src/test/ui/error-codes/E0375.rs
index 362854a53aa..0c03a8761df 100644
--- a/src/test/ui/error-codes/E0375.rs
+++ b/src/test/ui/error-codes/E0375.rs
@@ -1,5 +1,3 @@
-// ignore-tidy-linelength
-
 #![feature(coerce_unsized)]
 use std::ops::CoerceUnsized;
 
diff --git a/src/test/ui/feature-gates/feature-gate-ffi_returns_twice.rs b/src/test/ui/feature-gates/feature-gate-ffi_returns_twice.rs
index 2ea60029492..d118b7f4ff2 100644
--- a/src/test/ui/feature-gates/feature-gate-ffi_returns_twice.rs
+++ b/src/test/ui/feature-gates/feature-gate-ffi_returns_twice.rs
@@ -1,4 +1,3 @@
-// ignore-tidy-linelength
 #![crate_type = "lib"]
 
 extern {
diff --git a/src/test/ui/ffi_returns_twice.rs b/src/test/ui/ffi_returns_twice.rs
index 93c372e1d83..845e18df11b 100644
--- a/src/test/ui/ffi_returns_twice.rs
+++ b/src/test/ui/ffi_returns_twice.rs
@@ -1,4 +1,3 @@
-// ignore-tidy-linelength
 #![feature(ffi_returns_twice)]
 #![crate_type = "lib"]
 
diff --git a/src/test/ui/impl-trait/auto-trait-leak.rs b/src/test/ui/impl-trait/auto-trait-leak.rs
index ea0be0b346c..1c601bc3c34 100644
--- a/src/test/ui/impl-trait/auto-trait-leak.rs
+++ b/src/test/ui/impl-trait/auto-trait-leak.rs
@@ -1,5 +1,3 @@
-// ignore-tidy-linelength
-
 use std::cell::Cell;
 use std::rc::Rc;
 
diff --git a/src/test/ui/impl-trait/auto-trait-leak2.rs b/src/test/ui/impl-trait/auto-trait-leak2.rs
index e529b4757ed..fb4b5405123 100644
--- a/src/test/ui/impl-trait/auto-trait-leak2.rs
+++ b/src/test/ui/impl-trait/auto-trait-leak2.rs
@@ -1,5 +1,3 @@
-// ignore-tidy-linelength
-
 use std::cell::Cell;
 use std::rc::Rc;
 
diff --git a/src/test/ui/impl-trait/method-suggestion-no-duplication.rs b/src/test/ui/impl-trait/method-suggestion-no-duplication.rs
index 32f35171673..c5c966a959a 100644
--- a/src/test/ui/impl-trait/method-suggestion-no-duplication.rs
+++ b/src/test/ui/impl-trait/method-suggestion-no-duplication.rs
@@ -1,6 +1,4 @@
 // issue #21405
-// ignore-tidy-linelength
-
 struct Foo;
 
 fn foo<F>(f: F) where F: FnMut(Foo) {}
diff --git a/src/test/ui/invalid-module-declaration/invalid-module-declaration.rs b/src/test/ui/invalid-module-declaration/invalid-module-declaration.rs
index 3b1cd9fbdc8..254d810d79d 100644
--- a/src/test/ui/invalid-module-declaration/invalid-module-declaration.rs
+++ b/src/test/ui/invalid-module-declaration/invalid-module-declaration.rs
@@ -1,5 +1,3 @@
-// ignore-tidy-linelength
-
 mod auxiliary {
     mod foo;
 }
diff --git a/src/test/ui/issues/issue-21950.rs b/src/test/ui/issues/issue-21950.rs
index 0f78b37fedb..b902893bf82 100644
--- a/src/test/ui/issues/issue-21950.rs
+++ b/src/test/ui/issues/issue-21950.rs
@@ -1,5 +1,3 @@
-// ignore-tidy-linelength
-
 use std::ops::Add;
 
 fn main() {
diff --git a/src/test/ui/issues/issue-22370.rs b/src/test/ui/issues/issue-22370.rs
index 44eef2da83c..90912cfda0d 100644
--- a/src/test/ui/issues/issue-22370.rs
+++ b/src/test/ui/issues/issue-22370.rs
@@ -1,5 +1,3 @@
-// ignore-tidy-linelength
-
 trait A<T=Self> {}
 
 fn f(a: &A) {}
diff --git a/src/test/ui/issues/issue-22560.rs b/src/test/ui/issues/issue-22560.rs
index d91211e556b..4b8e3aa9eb3 100644
--- a/src/test/ui/issues/issue-22560.rs
+++ b/src/test/ui/issues/issue-22560.rs
@@ -1,5 +1,3 @@
-// ignore-tidy-linelength
-
 use std::ops::{Add, Sub};
 
 type Test = Add +
diff --git a/src/test/ui/issues/issue-23080-2.rs b/src/test/ui/issues/issue-23080-2.rs
index 750b7e19d89..e2bc3fe23df 100644
--- a/src/test/ui/issues/issue-23080-2.rs
+++ b/src/test/ui/issues/issue-23080-2.rs
@@ -1,5 +1,3 @@
-// ignore-tidy-linelength
-
 //~^^ ERROR
 
 #![feature(optin_builtin_traits)]
diff --git a/src/test/ui/issues/issue-23080.rs b/src/test/ui/issues/issue-23080.rs
index e25a2d916f5..fdfee698144 100644
--- a/src/test/ui/issues/issue-23080.rs
+++ b/src/test/ui/issues/issue-23080.rs
@@ -1,5 +1,3 @@
-// ignore-tidy-linelength
-
 #![feature(optin_builtin_traits)]
 
 unsafe auto trait Trait {
diff --git a/src/test/ui/issues/issue-23281.rs b/src/test/ui/issues/issue-23281.rs
index 98a0495451d..2b457a57d3e 100644
--- a/src/test/ui/issues/issue-23281.rs
+++ b/src/test/ui/issues/issue-23281.rs
@@ -1,5 +1,3 @@
-// ignore-tidy-linelength
-
 pub struct Struct;
 
 impl Struct {
diff --git a/src/test/ui/issues/issue-59488.rs b/src/test/ui/issues/issue-59488.rs
index e0a37f6adcc..6fa9961f26c 100644
--- a/src/test/ui/issues/issue-59488.rs
+++ b/src/test/ui/issues/issue-59488.rs
@@ -1,5 +1,3 @@
-// ignore-tidy-linelength
-
 fn foo() -> i32 {
     42
 }
diff --git a/src/test/ui/lint/lint-incoherent-auto-trait-objects.rs b/src/test/ui/lint/lint-incoherent-auto-trait-objects.rs
index 0d18965ee73..d53b5144760 100644
--- a/src/test/ui/lint/lint-incoherent-auto-trait-objects.rs
+++ b/src/test/ui/lint/lint-incoherent-auto-trait-objects.rs
@@ -1,5 +1,3 @@
-// ignore-tidy-linelength
-
 trait Foo {}
 
 impl Foo for dyn Send {}
diff --git a/src/test/ui/moves/moves-based-on-type-block-bad.rs b/src/test/ui/moves/moves-based-on-type-block-bad.rs
index 99928caa926..516325ce1d7 100644
--- a/src/test/ui/moves/moves-based-on-type-block-bad.rs
+++ b/src/test/ui/moves/moves-based-on-type-block-bad.rs
@@ -1,5 +1,3 @@
-// ignore-tidy-linelength
-
 #![feature(box_patterns)]
 #![feature(box_syntax)]
 
diff --git a/src/test/ui/on-unimplemented/auxiliary/no_debug.rs b/src/test/ui/on-unimplemented/auxiliary/no_debug.rs
index f240d0e1f1f..fd3dc0abdc8 100644
--- a/src/test/ui/on-unimplemented/auxiliary/no_debug.rs
+++ b/src/test/ui/on-unimplemented/auxiliary/no_debug.rs
@@ -1,5 +1,3 @@
-// ignore-tidy-linelength
-
 #![crate_type = "lib"]
 
 pub struct Bar;
diff --git a/src/test/ui/on-unimplemented/slice-index.rs b/src/test/ui/on-unimplemented/slice-index.rs
index b5e18e2397e..758220d3c4e 100644
--- a/src/test/ui/on-unimplemented/slice-index.rs
+++ b/src/test/ui/on-unimplemented/slice-index.rs
@@ -1,7 +1,4 @@
 // Test new Index error message for slices
-// ignore-tidy-linelength
-
-
 
 use std::ops::Index;
 
diff --git a/src/test/ui/rfc-2093-infer-outlives/dont-infer-static.rs b/src/test/ui/rfc-2093-infer-outlives/dont-infer-static.rs
index 9e81ee46169..5297d0d9842 100644
--- a/src/test/ui/rfc-2093-infer-outlives/dont-infer-static.rs
+++ b/src/test/ui/rfc-2093-infer-outlives/dont-infer-static.rs
@@ -1,5 +1,3 @@
-// ignore-tidy-linelength
-
 /*
  * We don't infer `T: 'static` outlives relationships by default.
  * Instead an additional feature gate `infer_static_outlives_requirements`
diff --git a/src/test/ui/rfc-2093-infer-outlives/enum.rs b/src/test/ui/rfc-2093-infer-outlives/enum.rs
index 622794ea9ac..71d2d322265 100644
--- a/src/test/ui/rfc-2093-infer-outlives/enum.rs
+++ b/src/test/ui/rfc-2093-infer-outlives/enum.rs
@@ -1,5 +1,3 @@
-// ignore-tidy-linelength
-
 #![feature(rustc_attrs)]
 
 // Needs an explicit where clause stating outlives condition. (RFC 2093)
diff --git a/src/test/ui/span/issue-24356.rs b/src/test/ui/span/issue-24356.rs
index 7696bd54226..7ec05aab29a 100644
--- a/src/test/ui/span/issue-24356.rs
+++ b/src/test/ui/span/issue-24356.rs
@@ -1,7 +1,5 @@
 // Regression test for #24356
 
-// ignore-tidy-linelength
-
 fn main() {
     {
         use std::ops::Deref;
diff --git a/src/test/ui/span/issue-7575.rs b/src/test/ui/span/issue-7575.rs
index c33398cd39c..ea0a66540b9 100644
--- a/src/test/ui/span/issue-7575.rs
+++ b/src/test/ui/span/issue-7575.rs
@@ -1,6 +1,4 @@
 // Test the mechanism for warning about possible missing `self` declarations.
-// ignore-tidy-linelength
-
 trait CtxtFn {
     fn f8(self, _: usize) -> usize;
     fn f9(_: usize) -> usize;
diff --git a/src/test/ui/stability-attribute/stability-attribute-issue.rs b/src/test/ui/stability-attribute/stability-attribute-issue.rs
index ca4d7cc6a6c..cda1aff133f 100644
--- a/src/test/ui/stability-attribute/stability-attribute-issue.rs
+++ b/src/test/ui/stability-attribute/stability-attribute-issue.rs
@@ -1,6 +1,4 @@
 // aux-build:stability_attribute_issue.rs
-// ignore-tidy-linelength
-
 #![deny(deprecated)]
 
 extern crate stability_attribute_issue;
diff --git a/src/test/ui/typeck/typeck-default-trait-impl-negation-sync.rs b/src/test/ui/typeck/typeck-default-trait-impl-negation-sync.rs
index f31dac27cae..e4487fb110c 100644
--- a/src/test/ui/typeck/typeck-default-trait-impl-negation-sync.rs
+++ b/src/test/ui/typeck/typeck-default-trait-impl-negation-sync.rs
@@ -1,5 +1,3 @@
-// ignore-tidy-linelength
-
 #![feature(optin_builtin_traits)]
 
 struct Managed;