try to upgrade rust version

Author: goldmedal

Cargo.toml

@@ -52,7 +52,7 @@ homepage = "https://datafusion.apache.org"
 license = "Apache-2.0"
 readme = "README.md"
 repository = "https://github.com/apache/datafusion"
-rust-version = "1.73"
+rust-version = "1.78"
 version = "38.0.0"
 
 [workspace.dependencies]

datafusion-cli/Cargo.toml

@@ -26,7 +26,7 @@ license = "Apache-2.0"
 homepage = "https://datafusion.apache.org"
 repository = "https://github.com/apache/datafusion"
 # Specify MSRV here as `cargo msrv` doesn't support workspace version
-rust-version = "1.73"
+rust-version = "1.78"
 readme = "README.md"
 
 [dependencies]

datafusion/proto-common/Cargo.toml

@@ -26,7 +26,7 @@ homepage = { workspace = true }
 repository = { workspace = true }
 license = { workspace = true }
 authors = { workspace = true }
-rust-version = "1.73"
+rust-version = "1.78"
 
 # Exclude proto files so crates.io consumers don't need protoc
 exclude = ["*.proto"]

datafusion/proto-common/gen/Cargo.toml

@@ -20,7 +20,7 @@ name = "gen-common"
 description = "Code generation for proto"
 version = "0.1.0"
 edition = { workspace = true }
-rust-version = "1.73"
+rust-version = "1.78"
 authors = { workspace = true }
 homepage = { workspace = true }
 repository = { workspace = true }

datafusion/proto/Cargo.toml

@@ -27,7 +27,7 @@ repository = { workspace = true }
 license = { workspace = true }
 authors = { workspace = true }
 # Specify MSRV here as `cargo msrv` doesn't support workspace version
-rust-version = "1.73"
+rust-version = "1.78"
 
 # Exclude proto files so crates.io consumers don't need protoc
 exclude = ["*.proto"]

datafusion/proto/gen/Cargo.toml

@@ -20,7 +20,7 @@ name = "gen"
 description = "Code generation for proto"
 version = "0.1.0"
 edition = { workspace = true }
-rust-version = "1.73"
+rust-version = "1.78"
 authors = { workspace = true }
 homepage = { workspace = true }
 repository = { workspace = true }

datafusion/substrait/Cargo.toml

@@ -26,7 +26,7 @@ repository = { workspace = true }
 license = { workspace = true }
 authors = { workspace = true }
 # Specify MSRV here as `cargo msrv` doesn't support workspace version
-rust-version = "1.73"
+rust-version = "1.78"
 
 [lints]
 workspace = true