Update syn to 2.0

ffi/gn/icu4x/BUILD.gn

@@ -630,7 +630,7 @@ rust_proc_macro("icu_provider_macros-v1_2_0") {
   deps = []
   deps += [ ":proc-macro2-v1_0_56" ]
   deps += [ ":quote-v1_0_26" ]
-  deps += [ ":syn-v1_0_109" ]
+  deps += [ ":syn-v2_0_15" ]
 
   rustenv = []
 
@@ -1088,7 +1088,7 @@ rust_library("strck_ident-v0_1_2") {
 
 rust_library("syn-v1_0_109") {
   crate_name = "syn"
-  crate_root = "//ffi/gn/vendor/syn/src/lib.rs"
+  crate_root = "//ffi/gn/vendor/syn-1.0.109/src/lib.rs"
   output_name = "syn-1f55ec6ab1286b6d"
 
   deps = []
@@ -1107,7 +1107,6 @@ rust_library("syn-v1_0_109") {
     "--cfg=feature=\"default\"",
     "--cfg=feature=\"derive\"",
     "--cfg=feature=\"extra-traits\"",
-    "--cfg=feature=\"fold\"",
     "--cfg=feature=\"full\"",
     "--cfg=feature=\"parsing\"",
     "--cfg=feature=\"printing\"",
@@ -1120,9 +1119,42 @@ rust_library("syn-v1_0_109") {
   visibility = [ ":*" ]
 }
 
+rust_library("syn-v2_0_15") {
+  crate_name = "syn"
+  crate_root = "//ffi/gn/vendor/syn/src/lib.rs"
+  output_name = "syn-81efed302294e4e7"
+
+  deps = []
+  deps += [ ":proc-macro2-v1_0_56" ]
+  deps += [ ":quote-v1_0_26" ]
+  deps += [ ":unicode-ident-v1_0_8" ]
+
+  rustenv = []
+
+  rustflags = [
+    "--cap-lints=allow",
+    "--edition=2021",
+    "-Cmetadata=81efed302294e4e7",
+    "-Cextra-filename=-81efed302294e4e7",
+    "--cfg=feature=\"clone-impls\"",
+    "--cfg=feature=\"default\"",
+    "--cfg=feature=\"derive\"",
+    "--cfg=feature=\"extra-traits\"",
+    "--cfg=feature=\"fold\"",
+    "--cfg=feature=\"full\"",
+    "--cfg=feature=\"parsing\"",
+    "--cfg=feature=\"printing\"",
+    "--cfg=feature=\"proc-macro\"",
+    "--cfg=feature=\"quote\"",
+    "--cfg=feature=\"visit\"",
+  ]
+
+  visibility = [ ":*" ]
+}
+
 rust_library("synstructure-v0_12_6") {
   crate_name = "synstructure"
-  crate_root = "//ffi/gn/vendor/synstructure/src/lib.rs"
+  crate_root = "//ffi/gn/vendor/synstructure-0.12.6/src/lib.rs"
   output_name = "synstructure-b30be16cba2970c4"
 
   deps = []
@@ -1145,6 +1177,31 @@ rust_library("synstructure-v0_12_6") {
   visibility = [ ":*" ]
 }
 
+rust_library("synstructure-v0_13_0") {
+  crate_name = "synstructure"
+  crate_root = "//ffi/gn/vendor/synstructure/src/lib.rs"
+  output_name = "synstructure-d99d51d75122a755"
+
+  deps = []
+  deps += [ ":proc-macro2-v1_0_56" ]
+  deps += [ ":quote-v1_0_26" ]
+  deps += [ ":syn-v2_0_15" ]
+  deps += [ ":unicode-xid-v0_2_4" ]
+
+  rustenv = []
+
+  rustflags = [
+    "--cap-lints=allow",
+    "--edition=2018",
+    "-Cmetadata=d99d51d75122a755",
+    "-Cextra-filename=-d99d51d75122a755",
+    "--cfg=feature=\"default\"",
+    "--cfg=feature=\"proc-macro\"",
+  ]
+
+  visibility = [ ":*" ]
+}
+
 rust_library("tinystr-v0_7_1") {
   crate_name = "tinystr"
   crate_root = "//utils/tinystr/src/lib.rs"
@@ -1339,8 +1396,8 @@ rust_proc_macro("yoke-derive-v0_7_1") {
   deps = []
   deps += [ ":proc-macro2-v1_0_56" ]
   deps += [ ":quote-v1_0_26" ]
-  deps += [ ":syn-v1_0_109" ]
-  deps += [ ":synstructure-v0_12_6" ]
+  deps += [ ":syn-v2_0_15" ]
+  deps += [ ":synstructure-v0_13_0" ]
 
   rustenv = []
 
@@ -1385,8 +1442,8 @@ rust_proc_macro("zerofrom-derive-v0_1_2") {
   deps = []
   deps += [ ":proc-macro2-v1_0_56" ]
   deps += [ ":quote-v1_0_26" ]
-  deps += [ ":syn-v1_0_109" ]
-  deps += [ ":synstructure-v0_12_6" ]
+  deps += [ ":syn-v2_0_15" ]
+  deps += [ ":synstructure-v0_13_0" ]
 
   rustenv = []
 
@@ -1432,7 +1489,7 @@ rust_proc_macro("zerovec-derive-v0_9_4") {
   deps = []
   deps += [ ":proc-macro2-v1_0_56" ]
   deps += [ ":quote-v1_0_26" ]
-  deps += [ ":syn-v1_0_109" ]
+  deps += [ ":syn-v2_0_15" ]
   deps += [ ":synstructure-v0_12_6" ]
 
   rustenv = []

provider/datagen/Cargo.toml

@@ -73,7 +73,7 @@ rust-format = { version = "0.3.4", features = ["token_stream"] }
 serde = { version = "1.0", default-features = false, features = ["derive", "alloc"] }
 serde_json = { version = "1.0", default-features = false, features = ["alloc"] }
 serde-aux = { version = "4.1.2", default-features = false }
-syn = {version = "1.0", features = ["parsing"] }
+syn = {version = "2", features = ["parsing"] }
 tinystr = { version = "0.7.1", path = "../../utils/tinystr", features = ["alloc", "serde", "zerovec"], default-features = false }
 toml = "0.5"
 writeable = { version = "0.5.1", path = "../../utils/writeable" }

provider/macros/Cargo.toml

@@ -30,7 +30,7 @@ proc-macro = true
 [dependencies]
 proc-macro2 = "1.0.27"
 quote = "1.0.9"
-syn = { version = "1.0.73", features = ["full"]}
+syn = { version = "2", features = ["full", "parsing"]}
 
 [dev-dependencies]
 icu_provider = { path = "../core", features = ["macros"] }