Remove timestamp for reproducible builds

Author: SozinM

crates/op-rbuilder/build.rs

@@ -28,7 +28,7 @@ use vergen_git2::Git2Builder;
 fn main() -> Result<(), Box<dyn Error>> {
     let mut emitter = Emitter::default();
 
-    let build_builder = BuildBuilder::default().build_timestamp(true).build()?;
+    let build_builder = BuildBuilder::default().build()?;
 
     emitter.add_instructions(&build_builder)?;
 
@@ -92,16 +92,11 @@ fn main() -> Result<(), Box<dyn Error>> {
     // ```text
     // Version: 0.1.0
     // Commit SHA: defa64b2
-    // Build Timestamp: 2023-05-19T01:47:19.815651705Z
     // Build Features: jemalloc
     // Build Profile: maxperf
     // ```
     println!("cargo:rustc-env=OP_RBUILDER_LONG_VERSION_0=Version: {pkg_version}{version_suffix}");
     println!("cargo:rustc-env=OP_RBUILDER_LONG_VERSION_1=Commit SHA: {sha}");
-    println!(
-        "cargo:rustc-env=OP_RBUILDER_LONG_VERSION_2=Build Timestamp: {}",
-        env::var("VERGEN_BUILD_TIMESTAMP")?
-    );
     println!(
         "cargo:rustc-env=OP_RBUILDER_LONG_VERSION_3=Build Features: {}",
         env::var("VERGEN_CARGO_FEATURES")?

crates/op-rbuilder/src/metrics.rs

@@ -12,8 +12,6 @@ pub const CARGO_PKG_VERSION: &str = env!("CARGO_PKG_VERSION");
 /// The 8 character short SHA of the latest commit.
 pub const VERGEN_GIT_SHA: &str = env!("VERGEN_GIT_SHA_SHORT");
 
-/// The build timestamp.
-pub const VERGEN_BUILD_TIMESTAMP: &str = env!("VERGEN_BUILD_TIMESTAMP");
 
 /// The target triple.
 pub const VERGEN_CARGO_TARGET_TRIPLE: &str = env!("VERGEN_CARGO_TARGET_TRIPLE");
@@ -26,7 +24,6 @@ pub const BUILD_PROFILE_NAME: &str = env!("OP_RBUILDER_BUILD_PROFILE");
 
 pub const VERSION: VersionInfo = VersionInfo {
     version: CARGO_PKG_VERSION,
-    build_timestamp: VERGEN_BUILD_TIMESTAMP,
     cargo_features: VERGEN_CARGO_FEATURES,
     git_sha: VERGEN_GIT_SHA,
     target_triple: VERGEN_CARGO_TARGET_TRIPLE,
@@ -172,8 +169,6 @@ pub fn record_flag_gauge_metrics(builder_args: &OpRbuilderArgs) {
 pub struct VersionInfo {
     /// The version of the application.
     pub version: &'static str,
-    /// The build timestamp of the application.
-    pub build_timestamp: &'static str,
     /// The cargo features enabled for the build.
     pub cargo_features: &'static str,
     /// The Git SHA of the build.
@@ -187,9 +182,8 @@ pub struct VersionInfo {
 impl VersionInfo {
     /// This exposes reth's version information over prometheus.
     pub fn register_version_metrics(&self) {
-        let labels: [(&str, &str); 6] = [
+        let labels: [(&str, &str); 5] = [
             ("version", self.version),
-            ("build_timestamp", self.build_timestamp),
             ("cargo_features", self.cargo_features),
             ("git_sha", self.git_sha),
             ("target_triple", self.target_triple),