cmd: add Command::log_command to disable logging cmd name and args

Author: pietroalbini

CHANGELOG.md

@@ -14,6 +14,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - New method `Crate::purge_from_cache` to remove the cached copy of a crate.
 - New method `BuildBuilder::patch_with_git` to replace crates.
 - New method `BuildBuilder::run` to run a build.
+- New method `Command::log_command` to disable logging the command name and
+  args before executing it.
 
 ### Changed
 

src/cmd/mod.rs

@@ -129,6 +129,7 @@ pub struct Command<'w, 'pl> {
     cd: Option<PathBuf>,
     timeout: Option<Duration>,
     no_output_timeout: Option<Duration>,
+    log_command: bool,
     log_output: bool,
 }
 
@@ -179,6 +180,7 @@ impl<'w, 'pl> Command<'w, 'pl> {
             timeout,
             no_output_timeout,
             log_output: true,
+            log_command: true,
         }
     }
 
@@ -261,6 +263,15 @@ impl<'w, 'pl> Command<'w, 'pl> {
         self
     }
 
+    /// Enable or disable logging the command name and args to the [`log` crate][log] before the
+    /// exectuion. By default logging is enabled.
+    ///
+    /// [log]: (https://crates.io/crates/log)
+    pub fn log_command(mut self, log_command: bool) -> Self {
+        self.log_command = log_command;
+        self
+    }
+
     /// Run the prepared command and return an error if it fails (for example with a non-zero exit
     /// code or a timeout).
     pub fn run(self) -> Result<(), Error> {
@@ -389,7 +400,9 @@ impl<'w, 'pl> Command<'w, 'pl> {
                 cmd.current_dir(cd);
             }
 
-            info!("running `{}`", cmdstr);
+            if self.log_command {
+                info!("running `{}`", cmdstr);
+            }
             let out = log_command(
                 cmd,
                 self.process_lines,