also delete new cargo .global_cache when clearing caches

Author: syphar

src/workspace.rs

@@ -4,6 +4,7 @@ use crate::inside_docker::CurrentContainer;
 use crate::Toolchain;
 use failure::{Error, ResultExt};
 use log::info;
+use std::fs;
 use std::path::{Path, PathBuf};
 use std::sync::Arc;
 use std::time::Duration;
@@ -236,6 +237,11 @@ impl Workspace {
             }
         }
 
+        let global_cache = self.cargo_home().join(".global-cache");
+        if global_cache.exists() {
+            fs::remove_file(global_cache)?;
+        }
+
         Ok(())
     }