Apply verbosity flag to scarb package tracing only

scarb/src/bin/scarb/main.rs

@@ -1,6 +1,8 @@
 use anyhow::Result;
 use clap::Parser;
+use std::str::FromStr;
 use tracing_log::AsTrace;
+use tracing_subscriber::filter::Directive;
 use tracing_subscriber::EnvFilter;
 
 use args::Args;
@@ -15,11 +17,16 @@ mod commands;
 fn main() {
     let args: Args = Args::parse();
 
+    let cli_log_level_directive = Directive::from_str(
+        format!("scarb={}", args.verbose.log_level_filter().as_trace()).as_str(),
+    )
+    .expect("Failed to parse log level directive from command line.");
+
     tracing_subscriber::fmt()
         .with_writer(std::io::stderr)
         .with_env_filter(
             EnvFilter::builder()
-                .with_default_directive(args.verbose.log_level_filter().as_trace().into())
+                .with_default_directive(cli_log_level_directive)
                 .with_env_var("SCARB_LOG")
                 .from_env_lossy(),
         )