Detect incorrectly named cargo.toml for install --path

src/cargo/ops/cargo_install.rs

@@ -212,11 +212,19 @@ fn install_one(
                         src.path().display()
                     );
                 } else {
-                    bail!(
-                        "`{}` does not contain a Cargo.toml file. \
+                    if src.path().join("cargo.toml").exists() {
+                        bail!(
+                            "`{}` does not contain a Cargo.toml file, but found cargo.toml please try to rename it to Cargo.toml. \
                      --path must point to a directory containing a Cargo.toml file.",
-                        src.path().display()
-                    )
+                            src.path().display()
+                        )
+                    } else {
+                        bail!(
+                            "`{}` does not contain a Cargo.toml file. \
+                     --path must point to a directory containing a Cargo.toml file.",
+                            src.path().display()
+                        )
+                    }
                 }
             }
             select_pkg(

tests/testsuite/install.rs

@@ -245,10 +245,11 @@ fn missing() {
 }
 
 #[cargo_test]
+#[cfg(not(target_os = "macos"))]
 fn pkg_missing_cargo_toml() {
     let p = project()
         .file(
-            "Cargo1.toml",
+            "cargo.toml",
             r#"
                 [package]
                 name = "foo"
@@ -259,13 +260,12 @@ fn pkg_missing_cargo_toml() {
         .file("src/main.rs", "fn main() {}")
         .build();
 
-    cargo_process("install")
+    cargo_process("install --path .")
         .arg(p.root())
         .with_status(101)
         .with_stderr(
             "\
-[UPDATING] [..] index
-[ERROR] could not find `[..]` in registry `[..]` with version `*`
+[ERROR] `[CWD]` does not contain a Cargo.toml but found cargo.toml please try to rename it to Cargo.toml. --path must point to a directory containing a Cargo.toml file.
 ",
         )
         .run();