Enforce edition on all Bazel targets

BUILD

@@ -8,6 +8,7 @@ rust_library(
         "alloc",
         "std",
     ],
+    edition = "2018",
     proc_macro_deps = [
         ":cxxbridge-macro",
     ],
@@ -19,6 +20,7 @@ rust_binary(
     name = "codegen",
     srcs = glob(["gen/cmd/src/**/*.rs"]),
     data = ["gen/cmd/src/gen/include/cxx.h"],
+    edition = "2018",
     visibility = ["//visibility:public"],
     deps = [
         "//third-party:clap",
@@ -46,6 +48,7 @@ cc_library(
 rust_proc_macro(
     name = "cxxbridge-macro",
     srcs = glob(["macro/src/**"]),
+    edition = "2018",
     deps = [
         "//third-party:proc-macro2",
         "//third-party:quote",
@@ -57,6 +60,7 @@ rust_library(
     name = "build",
     srcs = glob(["gen/build/src/**/*.rs"]),
     data = ["gen/build/src/gen/include/cxx.h"],
+    edition = "2018",
     visibility = ["//visibility:public"],
     deps = [
         "//third-party:cc",
@@ -73,6 +77,7 @@ rust_library(
     name = "lib",
     srcs = glob(["gen/lib/src/**/*.rs"]),
     data = ["gen/lib/src/gen/include/cxx.h"],
+    edition = "2018",
     visibility = ["//visibility:public"],
     deps = [
         "//third-party:cc",

WORKSPACE

@@ -16,10 +16,7 @@ load("@rules_rust//rust:repositories.bzl", "rust_repositories")
 
 RUST_VERSION = "1.57.0"
 
-rust_repositories(
-    edition = "2018",
-    version = RUST_VERSION,
-)
+rust_repositories(version = RUST_VERSION)
 
 load("//tools/bazel:vendor.bzl", "vendor")
 

demo/BUILD

@@ -5,6 +5,7 @@ load("//tools/bazel:rust_cxx_bridge.bzl", "rust_cxx_bridge")
 rust_binary(
     name = "demo",
     srcs = glob(["src/**/*.rs"]),
+    edition = "2018",
     deps = [
         ":blobstore-sys",
         ":bridge",

tests/BUILD

@@ -6,6 +6,7 @@ rust_test(
     name = "test",
     size = "small",
     srcs = ["test.rs"],
+    edition = "2018",
     deps = [
         ":cxx_test_suite",
         "//:cxx",
@@ -19,6 +20,7 @@ rust_library(
         "ffi/lib.rs",
         "ffi/module.rs",
     ],
+    edition = "2018",
     deps = [
         ":impl",
         "//:cxx",

third-party/BUILD

@@ -8,18 +8,21 @@ load(
 rust_library(
     name = "bitflags",
     srcs = glob(["vendor/bitflags-1.3.2/src/**"]),
+    edition = "2018",
 )
 
 rust_library(
     name = "cc",
     srcs = glob(["vendor/cc-1.0.73/src/**"]),
+    edition = "2018",
     visibility = ["//visibility:public"],
 )
 
 rust_library(
     name = "clap",
     srcs = glob(["vendor/clap-3.1.6/src/**"]),
     crate_features = ["std"],
+    edition = "2018",
     visibility = ["//visibility:public"],
     deps = [
         ":bitflags",
@@ -32,6 +35,7 @@ rust_library(
 rust_library(
     name = "codespan-reporting",
     srcs = glob(["vendor/codespan-reporting-0.11.1/src/**"]),
+    edition = "2018",
     visibility = ["//visibility:public"],
     deps = [
         ":termcolor",
@@ -43,12 +47,14 @@ rust_library(
     name = "hashbrown",
     srcs = glob(["vendor/hashbrown-0.11.2/src/**"]),
     crate_features = ["raw"],
+    edition = "2018",
 )
 
 rust_library(
     name = "indexmap",
     srcs = glob(["vendor/indexmap-1.8.0/src/**"]),
     crate_features = ["std"],
+    edition = "2018",
     rustc_flags = ["--cfg=has_std"],
     deps = [":hashbrown"],
 )
@@ -57,6 +63,7 @@ rust_library(
     name = "memchr",
     srcs = glob(["vendor/memchr-2.4.1/src/**/*.rs"]),
     crate_features = ["std"],
+    edition = "2018",
 )
 
 rust_library(
@@ -66,6 +73,7 @@ rust_library(
         "alloc",
         "std",
     ],
+    edition = "2018",
     visibility = ["//visibility:public"],
 )
 
@@ -76,6 +84,7 @@ rust_library(
         "memchr",
         "raw_os_str",
     ],
+    edition = "2018",
     deps = [":memchr"],
 )
 
@@ -86,6 +95,7 @@ rust_library(
         "proc-macro",
         "span-locations",
     ],
+    edition = "2018",
     visibility = ["//visibility:public"],
     deps = [
         ":proc-macro2@build",
@@ -101,19 +111,22 @@ cargo_build_script(
         "span-locations",
     ],
     crate_name = "build",
+    edition = "2018",
 )
 
 rust_library(
     name = "quote",
     srcs = glob(["vendor/quote-1.0.15/src/**"]),
     crate_features = ["proc-macro"],
+    edition = "2018",
     visibility = ["//visibility:public"],
     deps = [":proc-macro2"],
 )
 
 rust_library(
     name = "scratch",
     srcs = glob(["vendor/scratch-1.0.1/src/**"]),
+    edition = "2018",
     rustc_env = {"OUT_DIR": ""},
     visibility = ["//visibility:public"],
 )
@@ -129,6 +142,7 @@ rust_library(
         "printing",
         "proc-macro",
     ],
+    edition = "2018",
     visibility = ["//visibility:public"],
     deps = [
         ":proc-macro2",
@@ -150,25 +164,30 @@ cargo_build_script(
         "proc-macro",
     ],
     crate_name = "build",
+    edition = "2018",
 )
 
 rust_library(
     name = "termcolor",
     srcs = glob(["vendor/termcolor-1.1.3/src/**"]),
+    edition = "2018",
 )
 
 rust_library(
     name = "textwrap",
     srcs = glob(["vendor/textwrap-0.15.0/src/**"]),
+    edition = "2018",
     deps = [":unicode-width"],
 )
 
 rust_library(
     name = "unicode-width",
     srcs = glob(["vendor/unicode-width-0.1.9/src/**"]),
+    edition = "2018",
 )
 
 rust_library(
     name = "unicode-xid",
     srcs = glob(["vendor/unicode-xid-0.2.2/src/**"]),
+    edition = "2018",
 )

tools/bazel/third_party.bzl

@@ -5,14 +5,14 @@ load("@third-party//:vendor.bzl", "vendored")
 def third_party_glob(include):
     return vendored and native.glob(include)
 
-def third_party_cargo_build_script(rustc_flags = [], **kwargs):
+def third_party_cargo_build_script(edition, rustc_flags = [], **kwargs):
     rustc_flags = rustc_flags + ["--cap-lints=allow"]
-    cargo_build_script(rustc_flags = rustc_flags, **kwargs)
+    cargo_build_script(edition = edition, rustc_flags = rustc_flags, **kwargs)
 
-def third_party_rust_binary(rustc_flags = [], **kwargs):
+def third_party_rust_binary(edition, rustc_flags = [], **kwargs):
     rustc_flags = rustc_flags + ["--cap-lints=allow"]
-    rust_binary(rustc_flags = rustc_flags, **kwargs)
+    rust_binary(edition = edition, rustc_flags = rustc_flags, **kwargs)
 
-def third_party_rust_library(rustc_flags = [], **kwargs):
+def third_party_rust_library(edition, rustc_flags = [], **kwargs):
     rustc_flags = rustc_flags + ["--cap-lints=allow"]
-    rust_library(rustc_flags = rustc_flags, **kwargs)
+    rust_library(edition = edition, rustc_flags = rustc_flags, **kwargs)