Make --locked required for cargo install --path, too.

Author: ehuss

src/cargo/ops/cargo_install.rs

@@ -215,18 +215,15 @@ fn install_one(
         Some(Filesystem::new(config.cwd().join("target-install")))
     };
 
-    let ws = match overidden_target_dir {
-        Some(dir) => {
-            let mut ws = Workspace::ephemeral(pkg, config, Some(dir), false)?;
-            ws.set_ignore_lock(config.lock_update_allowed());
-            ws
-        }
+    let mut ws = match overidden_target_dir {
+        Some(dir) => Workspace::ephemeral(pkg, config, Some(dir), false)?,
         None => {
             let mut ws = Workspace::new(pkg.manifest_path(), config)?;
             ws.set_require_optional_deps(false);
             ws
         }
     };
+    ws.set_ignore_lock(config.lock_update_allowed());
     let pkg = ws.current()?;
 
     if from_cwd {

tests/testsuite/install.rs

@@ -1190,8 +1190,7 @@ fn custom_target_dir_for_git_source() {
 
 #[test]
 fn install_respects_lock_file() {
-    // `cargo install` now requires --locked to use a Cargo.lock for non
-    // --path installs.
+    // `cargo install` now requires --locked to use a Cargo.lock.
     Package::new("bar", "0.1.0").publish();
     Package::new("bar", "0.1.1")
         .file("src/lib.rs", "not rust")
@@ -1230,7 +1229,8 @@ dependencies = [
 
 #[test]
 fn install_path_respects_lock_file() {
-    // For --path installs, always use local Cargo.lock.
+    // --path version of install_path_respects_lock_file, --locked is required
+    // to use Cargo.lock.
     Package::new("bar", "0.1.0").publish();
     Package::new("bar", "0.1.1")
         .file("src/lib.rs", "not rust")
@@ -1266,7 +1266,11 @@ dependencies = [
         )
         .build();
 
-    p.cargo("install --path .").run();
+    p.cargo("install --path .")
+        .with_stderr_contains("[..]not rust[..]")
+        .with_status(101)
+        .run();
+    p.cargo("install --path . --locked").run();
 }
 
 #[test]