Migrate to 2021

23 files changed, 23 insertions, 23 deletions

diff --git a/src/tools/build-manifest/Cargo.toml b/src/tools/build-manifest/Cargo.toml
index 334407c2b2e..340acff34f2 100644
--- a/src/tools/build-manifest/Cargo.toml
+++ b/src/tools/build-manifest/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "build-manifest"
 version = "0.1.0"
-edition = "2018"
+edition = "2021"
 
 [dependencies]
 toml = "0.5"
diff --git a/src/tools/bump-stage0/Cargo.toml b/src/tools/bump-stage0/Cargo.toml
index 7d64e20a3d3..cf8840ff6ee 100644
--- a/src/tools/bump-stage0/Cargo.toml
+++ b/src/tools/bump-stage0/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "bump-stage0"
 version = "0.1.0"
-edition = "2018"
+edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
diff --git a/src/tools/cargotest/Cargo.toml b/src/tools/cargotest/Cargo.toml
index a88272d2344..bfd894e2bd2 100644
--- a/src/tools/cargotest/Cargo.toml
+++ b/src/tools/cargotest/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "cargotest2"
 version = "0.1.0"
-edition = "2018"
+edition = "2021"
 
 [[bin]]
 name = "cargotest"
diff --git a/src/tools/compiletest/Cargo.toml b/src/tools/compiletest/Cargo.toml
index d6aa3fd2631..e9426a2d9f5 100644
--- a/src/tools/compiletest/Cargo.toml
+++ b/src/tools/compiletest/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "compiletest"
 version = "0.0.0"
-edition = "2018"
+edition = "2021"
 
 [dependencies]
 colored = "2"
diff --git a/src/tools/error_index_generator/Cargo.toml b/src/tools/error_index_generator/Cargo.toml
index 2e4b7beb376..c84b79e11e9 100644
--- a/src/tools/error_index_generator/Cargo.toml
+++ b/src/tools/error_index_generator/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "error_index_generator"
 version = "0.0.0"
-edition = "2018"
+edition = "2021"
 
 [dependencies]
 rustdoc = { path = "../../librustdoc" }
diff --git a/src/tools/expand-yaml-anchors/Cargo.toml b/src/tools/expand-yaml-anchors/Cargo.toml
index 358dff06532..9a25b6c1f1c 100644
--- a/src/tools/expand-yaml-anchors/Cargo.toml
+++ b/src/tools/expand-yaml-anchors/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "expand-yaml-anchors"
 version = "0.1.0"
-edition = "2018"
+edition = "2021"
 
 [dependencies]
 yaml-rust = "0.4.3"
diff --git a/src/tools/html-checker/Cargo.toml b/src/tools/html-checker/Cargo.toml
index e88d2f0d928..34d3954db28 100644
--- a/src/tools/html-checker/Cargo.toml
+++ b/src/tools/html-checker/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "html-checker"
 version = "0.1.0"
-edition = "2018"
+edition = "2021"
 
 [[bin]]
 name = "html-checker"
diff --git a/src/tools/jsondocck/Cargo.toml b/src/tools/jsondocck/Cargo.toml
index a65deb12541..ccabe6483d7 100644
--- a/src/tools/jsondocck/Cargo.toml
+++ b/src/tools/jsondocck/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "jsondocck"
 version = "0.1.0"
-edition = "2018"
+edition = "2021"
 
 [dependencies]
 jsonpath_lib = "0.2"
diff --git a/src/tools/linkchecker/Cargo.toml b/src/tools/linkchecker/Cargo.toml
index 21ba2269556..1d8f2f91882 100644
--- a/src/tools/linkchecker/Cargo.toml
+++ b/src/tools/linkchecker/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "linkchecker"
 version = "0.1.0"
-edition = "2018"
+edition = "2021"
 
 [[bin]]
 name = "linkchecker"
diff --git a/src/tools/lint-docs/Cargo.toml b/src/tools/lint-docs/Cargo.toml
index 6792887fa5d..3578bda8276 100644
--- a/src/tools/lint-docs/Cargo.toml
+++ b/src/tools/lint-docs/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "lint-docs"
 version = "0.1.0"
-edition = "2018"
+edition = "2021"
 description = "A script to extract the lint documentation for the rustc book."
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
diff --git a/src/tools/remote-test-client/Cargo.toml b/src/tools/remote-test-client/Cargo.toml
index 7b20ba83546..d59cd6b3d8e 100644
--- a/src/tools/remote-test-client/Cargo.toml
+++ b/src/tools/remote-test-client/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "remote-test-client"
 version = "0.1.0"
-edition = "2018"
+edition = "2021"
 
 [dependencies]
diff --git a/src/tools/remote-test-server/Cargo.toml b/src/tools/remote-test-server/Cargo.toml
index 01309aec9a3..e6be8530cf6 100644
--- a/src/tools/remote-test-server/Cargo.toml
+++ b/src/tools/remote-test-server/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "remote-test-server"
 version = "0.1.0"
-edition = "2018"
+edition = "2021"
 
 [dependencies]
diff --git a/src/tools/rust-demangler/Cargo.toml b/src/tools/rust-demangler/Cargo.toml
index 157409bc847..2bb73b3262d 100644
--- a/src/tools/rust-demangler/Cargo.toml
+++ b/src/tools/rust-demangler/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "rust-demangler"
 version = "0.0.1"
-edition = "2018"
+edition = "2021"
 
 [dependencies]
 regex = "1.0"
diff --git a/src/tools/rustbook/Cargo.toml b/src/tools/rustbook/Cargo.toml
index da36ce0e690..de1327d74ff 100644
--- a/src/tools/rustbook/Cargo.toml
+++ b/src/tools/rustbook/Cargo.toml
@@ -2,7 +2,7 @@
 name = "rustbook"
 version = "0.1.0"
 license = "MIT OR Apache-2.0"
-edition = "2018"
+edition = "2021"
 
 [dependencies]
 clap = "2.25.0"
diff --git a/src/tools/rustc-workspace-hack/Cargo.toml b/src/tools/rustc-workspace-hack/Cargo.toml
index 38b9fefbaf5..a28cf28841e 100644
--- a/src/tools/rustc-workspace-hack/Cargo.toml
+++ b/src/tools/rustc-workspace-hack/Cargo.toml
@@ -5,7 +5,7 @@ license = 'MIT OR Apache-2.0'
 description = """
 Hack for the compiler's own build system
 """
-edition = "2018"
+edition = "2021"
 
 [lib]
 path = "lib.rs"
diff --git a/src/tools/rustdoc-themes/Cargo.toml b/src/tools/rustdoc-themes/Cargo.toml
index 4b2ad982a84..3d8c77d36d7 100644
--- a/src/tools/rustdoc-themes/Cargo.toml
+++ b/src/tools/rustdoc-themes/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "rustdoc-themes"
 version = "0.1.0"
-edition = "2018"
+edition = "2021"
 
 [[bin]]
 name = "rustdoc-themes"
diff --git a/src/tools/rustdoc/Cargo.toml b/src/tools/rustdoc/Cargo.toml
index 5625707b25a..c4101f72cc2 100644
--- a/src/tools/rustdoc/Cargo.toml
+++ b/src/tools/rustdoc/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "rustdoc-tool"
 version = "0.0.0"
-edition = "2018"
+edition = "2021"
 
 # Cargo adds a number of paths to the dylib search path on windows, which results in
 # the wrong rustdoc being executed. To avoid the conflicting rustdocs, we name the "tool"
diff --git a/src/tools/rustfmt/Cargo.toml b/src/tools/rustfmt/Cargo.toml
index 81e3e26e8b0..7b4667c17c8 100644
--- a/src/tools/rustfmt/Cargo.toml
+++ b/src/tools/rustfmt/Cargo.toml
@@ -8,7 +8,7 @@ readme = "README.md"
 license = "Apache-2.0/MIT"
 build = "build.rs"
 categories = ["development-tools"]
-edition = "2018"
+edition = "2021"
 
 [[bin]]
 name = "rustfmt"
diff --git a/src/tools/tidy/Cargo.toml b/src/tools/tidy/Cargo.toml
index 57fe5a62e9a..69c8063f42e 100644
--- a/src/tools/tidy/Cargo.toml
+++ b/src/tools/tidy/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "tidy"
 version = "0.1.0"
-edition = "2018"
+edition = "2021"
 autobins = false
 
 [dependencies]
diff --git a/src/tools/tier-check/Cargo.toml b/src/tools/tier-check/Cargo.toml
index d6119cac5f3..3f08165a3fc 100644
--- a/src/tools/tier-check/Cargo.toml
+++ b/src/tools/tier-check/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "tier-check"
 version = "0.1.0"
-edition = "2018"
+edition = "2021"
 license = "MIT OR Apache-2.0"
 
 [dependencies]
diff --git a/src/tools/unicode-table-generator/Cargo.toml b/src/tools/unicode-table-generator/Cargo.toml
index 948773f7810..ef01877c0b9 100644
--- a/src/tools/unicode-table-generator/Cargo.toml
+++ b/src/tools/unicode-table-generator/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "unicode-bdd"
 version = "0.1.0"
-edition = "2018"
+edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
diff --git a/src/tools/unstable-book-gen/Cargo.toml b/src/tools/unstable-book-gen/Cargo.toml
index febeaa446b3..73e5a91bec7 100644
--- a/src/tools/unstable-book-gen/Cargo.toml
+++ b/src/tools/unstable-book-gen/Cargo.toml
@@ -2,7 +2,7 @@
 name = "unstable-book-gen"
 version = "0.1.0"
 license = "MIT OR Apache-2.0"
-edition = "2018"
+edition = "2021"
 
 [dependencies]
 tidy = { path = "../tidy" }
diff --git a/src/tools/x/Cargo.toml b/src/tools/x/Cargo.toml
index 264a741159a..31502727962 100644
--- a/src/tools/x/Cargo.toml
+++ b/src/tools/x/Cargo.toml
@@ -2,5 +2,5 @@
 name = "x"
 version = "0.1.0"
 description = "Run x.py slightly more conveniently"
-edition = "2018"
+edition = "2021"
 publish = false