add build timestamp and rustc version to version cmd

Cargo.lock

···
 checksum = "b05b61dc5112cbb17e4b6cd61790d9845d13888356391624cbe7e41efeac1e75"
 
 [[package]]
+name = "compile-time"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e55ede5279d4d7c528906853743abeb26353ae1e6c440fcd6d18316c2c2dd903"
+dependencies = [
+ "once_cell",
+ "proc-macro2",
+ "quote",
+ "rustc_version",
+ "semver",
+ "time",
+]
+
+[[package]]
 name = "compression-codecs"
 version = "0.4.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
···
  "ansi_term",
  "anyhow",
  "async-lock",
+ "compile-time",
  "console_error_panic_hook",
  "futures",
  "getrandom 0.3.4",

Cargo.toml

···
 scc = "3"
 rapidhash = { version = "4", features = ["unsafe"] }
 async-lock = "3.4.1"
+compile-time = "0.2.0"
 
 [patch.crates-io]
 vfs = { git = "https://github.com/landaire/rust-vfs", branch = "fix/wasm" }

src/cmd/mv.rs

···
             .map_err(to_shell_err(call.arguments_span()))?;
 
         // Check that source exists
-        let meta = source.metadata().map_err(to_shell_err(call.arguments_span()))?;
+        let meta = source
+            .metadata()
+            .map_err(to_shell_err(call.arguments_span()))?;
 
         match meta.file_type {
             VfsFileType::File => move_file(&source, &dest, call.arguments_span())?,
···
     span: nu_protocol::Span,
 ) -> Result<(), ShellError> {
     // Read source file content
-    let mut source_file = source
-        .open_file()
-        .map_err(to_shell_err(span))?;
+    let mut source_file = source.open_file().map_err(to_shell_err(span))?;
 
     let mut contents = Vec::new();
     source_file
···
     // Recursively move all entries
     let entries = source.read_dir().map_err(to_shell_err(span))?;
     for entry_name in entries {
-        let source_entry = source.join(entry_name.as_str()).map_err(to_shell_err(span))?;
+        let source_entry = source
+            .join(entry_name.as_str())
+            .map_err(to_shell_err(span))?;
         let dest_entry = dest.join(entry_name.as_str()).map_err(to_shell_err(span))?;
 
         let entry_meta = source_entry.metadata().map_err(to_shell_err(span))?;
···
 
     Ok(())
 }
-

src/cmd/version.rs

···
         call: &Call,
         _input: PipelineData,
     ) -> Result<PipelineData, ShellError> {
-        Ok(Value::string("dysnomia.v099.t1765660500", call.head).into_pipeline_data())
+        let date = compile_time::unix!();
+        let rustc = compile_time::rustc_version_str!();
+        Ok(
+            Value::string(format!("dysnomia.v099.t{date} (rustc {rustc})"), call.head)
+                .into_pipeline_data(),
+        )
     }
 }