chore: update MSRV and Cargo workspace syntax

Set MSRV to 1.66 and update Cargo workspace syntax together with
versions in members.  While at it restrict serde dependency in two
non-member crates so that it compiles with Rust 1.66.

Cargo.toml

@@ -4,11 +4,10 @@ members = [
     "borsh-derive",
     "borsh-derive-internal",
     "borsh-schema-derive-internal",
-    "fuzz/fuzz-run",
-    "benchmarks",
 ]
+exclude = [ "fuzz/fuzz-run", "benchmarks" ]
 
-[workspace.metadata.workspaces]
+[workspace.package]
 # shared version of all public crates in the workspace
 version = "0.10.3"
-exclude = [ "fuzz/*", "benchmarks" ]
+rust-version = "1.66.0"

benchmarks/Cargo.toml

@@ -13,7 +13,9 @@ bench = false
 rand_xorshift = "0.2.0"
 rand = "0.7.0"
 borsh = { path = "../borsh", default-features = false }
-serde = { version = "1.0", features = ["derive"] }
+# Building with serde 1.0.204 breaks due to the use of ‘diagnostic’
+# attribute.  Remove once MSRV is updated.
+serde = { version = "1.0, <1.0.204", features = ["derive"] }
 speedy-derive = "0.5"
 speedy = "0.5"
 

borsh-derive-internal/Cargo.toml

@@ -1,6 +1,7 @@
 [package]
 name = "borsh-derive-internal"
-version = "0.0.0"
+version.workspace = true
+rust-version.workspace = true
 authors = ["Near Inc <[email protected]>"]
 edition = "2018"
 license = "Apache-2.0"

borsh-derive/Cargo.toml

@@ -1,6 +1,7 @@
 [package]
 name = "borsh-derive"
-version = "0.0.0"
+version.workspace = true
+rust-version.workspace = true
 authors = ["Near Inc <[email protected]>"]
 edition = "2018"
 license = "Apache-2.0"

borsh-schema-derive-internal/Cargo.toml

@@ -1,6 +1,7 @@
 [package]
 name = "borsh-schema-derive-internal"
-version = "0.0.0"
+version.workspace = true
+rust-version.workspace = true
 authors = ["Near Inc <[email protected]>"]
 edition = "2018"
 license = "Apache-2.0"

borsh/Cargo.toml

@@ -1,6 +1,7 @@
 [package]
 name = "borsh"
-version = "0.0.0"
+version.workspace = true
+rust-version.workspace = true
 authors = ["Near Inc <[email protected]>"]
 edition = "2018"
 license = "MIT OR Apache-2.0"

fuzz/fuzz-run/Cargo.toml

@@ -12,3 +12,8 @@ path = "src/main.rs"
 [dependencies]
 honggfuzz = "0.5"
 borsh = { path = "../../borsh" }
+# This is transitive dependency specified here only to limit the
+# version.  We need to limit the version because building
+# serde 1.0.204 breaks due to the use of ‘diagnostic’ attribute.  Drop
+# this dependency once MSRV is updated.
+serde = "1.0, <1.0.204"