diff --git a/.gitignore b/.gitignore
index 96d907bc..335cecb7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@
 /config.mk
 *autoloads.el
 .stack-work/
+test/test-project/target
diff --git a/README.md b/README.md
index c29ef978..f26df8fc 100644
--- a/README.md
+++ b/README.md
@@ -516,6 +516,7 @@ before being used.
 - `rustic-cargo-bench` run 'cargo bench' for the current project
 - `rustic-cargo-build-doc` build the documentation for the current project
 - `rustic-cargo-doc` open the documentation for the current project in a browser
+- `rustic-cargo-lints` called with `rustic-lints-arguments`
 
 ## Clippy
 
diff --git a/rustic-babel.el b/rustic-babel.el
index 6cb9830e..52306f26 100644
--- a/rustic-babel.el
+++ b/rustic-babel.el
@@ -364,7 +364,7 @@ kill the running process."
         (let ((default-directory dir)
               (toolchain (cdr (assq :toolchain params))))
           (write-region
-           (concat "#![allow(non_snake_case)]\n"
+           (concat "#![allow(non_snake_case, unused)]\n"
                    (if use-blocks (rustic-babel-insert-mod use-blocks) "")
                    (if include-blocks (rustic-babel-include-blocks include-blocks) "")
                    (if wrap-main (rustic-babel-ensure-main-wrap body) body))
diff --git a/rustic-cargo.el b/rustic-cargo.el
index b5e6ed86..d524eb0c 100644
--- a/rustic-cargo.el
+++ b/rustic-cargo.el
@@ -40,6 +40,11 @@ If nil then the project is simply created."
   :type 'boolean
   :group 'rustic-cargo)
 
+(defcustom rustic-default-test-arguments "--workspace --benches --tests --all-features"
+  "Default arguments when running 'cargo test'."
+  :type 'string
+  :group 'rustic-cargo)
+
 (defcustom rustic-cargo-check-arguments "--workspace --benches --tests --all-features"
   "Default arguments when running 'cargo check'."
   :type 'string
@@ -90,6 +95,14 @@ stored in this variable.")
   (when rustic-cargo-test-disable-warnings
     (setq-local rustic-compile-rustflags "-Awarnings")))
 
+(defun rustic-cargo-run-test (test)
+  "Run TEST which can be a single test or mod name."
+  (let* ((c (list (rustic-cargo-bin) "test" test))
+         (buf rustic-test-buffer-name)
+         (proc rustic-test-process-name)
+         (mode 'rustic-cargo-test-mode))
+    (rustic-compilation c (list :buffer buf :process proc :mode mode))))
+
 ;;;###autoload
 (defun rustic-cargo-test-run (&optional test-args)
   "Start compilation process for 'cargo test' with optional TEST-ARGS."
@@ -112,10 +125,13 @@ When calling this function from `rustic-popup-mode', always use the value of
   (interactive "P")
   (rustic-cargo-test-run
    (cond (arg
-          (setq rustic-test-arguments (read-from-minibuffer "Cargo test arguments: " rustic-test-arguments)))
+          (setq rustic-test-arguments (read-from-minibuffer "Cargo test arguments: " rustic-default-test-arguments)))
          ((eq major-mode 'rustic-popup-mode)
-          rustic-test-arguments)
-         (t ""))))
+          (if (> (length rustic-test-arguments) 0)
+              rustic-test-arguments
+            rustic-default-test-arguments))
+         (t
+          rustic-default-test-arguments))))
 
 ;;;###autoload
 (defun rustic-cargo-test-rerun ()
@@ -141,15 +157,6 @@ When calling this function from `rustic-popup-mode', always use the value of
                     (rustic-cargo--get-current-mod)))
       (rustic-cargo-test)))
 
-(defun rustic-cargo-run-test (test)
-  "Run TEST which can be a single test or mod name."
-  (let* ((command (list (rustic-cargo-bin) "test" test))
-         (c (append command))
-         (buf rustic-test-buffer-name)
-         (proc rustic-test-process-name)
-         (mode 'rustic-cargo-test-mode))
-    (rustic-compilation c (list :buffer buf :process proc :mode mode))))
-
 (defconst rustic-cargo-mod-regexp
   "^\s*mod\s+\\([[:word:][:multibyte:]_][[:word:][:multibyte:]_[:digit:]]*\\)\s*{")
 (defconst rustic-cargo-fn-regexp
@@ -235,7 +242,7 @@ Execute process in PATH."
          (inhibit-read-only t))
     (make-process :name rustic-cargo-outdated-process-name
                   :buffer buf
-                  :command '("cargo" "outdated" "--depth" "1")
+                  :command `(,(rustic-cargo-bin) "outdated" "--depth" "1")
                   :filter #'rustic-cargo-outdated-filter
                   :sentinel #'rustic-cargo-outdated-sentinel
                   :file-handler t)
@@ -287,7 +294,7 @@ Execute process in PATH."
   "Ask whether to install crate CRATE."
   (let ((cmd (format "cargo install cargo-%s" crate)))
     (when (yes-or-no-p (format "Cargo-%s missing. Install ? " crate))
-      (async-shell-command cmd "cargo" "cargo-error"))))
+      (async-shell-command cmd (rustic-cargo-bin) "cargo-error"))))
 
 (defun rustic-cargo-outdated-generate-menu (packages)
   "Re-populate the `tabulated-list-entries' with PACKAGES."
@@ -486,15 +493,15 @@ When calling this function from `rustic-popup-mode', always use the value of
 
 (defun rustic-cargo-run-get-relative-example-name ()
   "Run 'cargo run --example' if current buffer within a 'examples' directory."
-  (if rustic--buffer-workspace
-      (let ((relative-filenames
-             (split-string (file-relative-name buffer-file-name rustic--buffer-workspace) "/")))
-        (if (string= "examples" (car relative-filenames))
-            (let ((size (length relative-filenames)))
-              (cond ((eq size 2) (file-name-sans-extension(nth 1 relative-filenames))) ;; examples/single-example1.rs
-                    ((> size 2) (car (nthcdr (- size 2) relative-filenames))) ;; examples/example2/main.rs
-                    (t nil))) nil))
-    nil))
+  (let* ((buffer-project-root (rustic-buffer-crate))
+         (relative-filenames
+          (if buffer-project-root
+              (split-string (file-relative-name buffer-file-name buffer-project-root) "/") nil)))
+    (if (and relative-filenames (string= "examples" (car relative-filenames)))
+        (let ((size (length relative-filenames)))
+          (cond ((eq size 2) (file-name-sans-extension (nth 1 relative-filenames))) ;; examples/single-example1.rs
+                ((> size 2) (car (nthcdr (- size 2) relative-filenames)))           ;; examples/example2/main.rs
+                (t nil))) nil)))
 
 ;;;###autoload
 (defun rustic-run-shell-command (&optional arg)
diff --git a/rustic-clippy.el b/rustic-clippy.el
index 6dcd067d..3d221e5a 100644
--- a/rustic-clippy.el
+++ b/rustic-clippy.el
@@ -17,6 +17,11 @@
   :type 'string
   :group 'rustic-cargo)
 
+(defcustom rustic-lints-arguments "-f custom_lints.toml clippy"
+  "Default arguments when running cargo-lints."
+  :type 'string
+  :group 'rustic-cargo)
+
 (defvar rustic-clippy-process-name "rustic-cargo-clippy-process"
   "Process name for clippy processes.")
 
@@ -53,6 +58,18 @@
                                 :sentinel (plist-get args :sentinel)
                                 :no-display (plist-get args :silent)))))
 
+;;;###autoload
+(defun rustic-cargo-lints ()
+  "Run cargo-lints with optional ARGS."
+  (interactive)
+  (let* ((command `(,(rustic-cargo-bin)
+                    "lints"
+                    ,@(split-string rustic-lints-arguments)))
+         (buf rustic-clippy-buffer-name)
+         (proc rustic-clippy-process-name)
+         (mode 'rustic-cargo-clippy-mode))
+    (rustic-compilation command (list :buffer buf :process proc :mode mode))))
+
 ;;;###autoload
 (defun rustic-cargo-clippy (&optional arg)
   "Run 'cargo clippy'.
@@ -63,7 +80,7 @@ When calling this function from `rustic-popup-mode', always use the value of
   (interactive "P")
   (rustic-cargo-clippy-run
    :params (cond (arg
-          (setq rustic-clippy-arguments (read-from-minibuffer "Cargo clippy arguments: " rustic-clippy-arguments)))
+          (setq rustic-clippy-arguments (read-from-minibuffer "Cargo clippy arguments: " rustic-default-clippy-arguments)))
          ((eq major-mode 'rustic-popup-mode)
           (if (> (length rustic-clippy-arguments) 0)
               rustic-clippy-arguments
diff --git a/rustic-compile.el b/rustic-compile.el
index e85ef1cb..e40587f2 100644
--- a/rustic-compile.el
+++ b/rustic-compile.el
@@ -237,6 +237,7 @@ Set environment variables for rust process."
       (set-process-sentinel process (plist-get args :sentinel))
       (set-process-coding-system process 'utf-8-emacs-unix 'utf-8-emacs-unix)
       (process-put process 'command (plist-get args :command))
+      (process-put process 'file-buffer (plist-get args :file-buffer))
       process)))
 
 (defun rustic-compilation-setup-buffer (buf dir mode &optional no-mode-line)
@@ -283,7 +284,8 @@ ARGS is a plist that affects how the process is run.
         (process (or (plist-get args :process) rustic-compilation-process-name))
         (mode (or (plist-get args :mode) 'rustic-compilation-mode))
         (directory (or (plist-get args :directory) (funcall rustic-compile-directory-method)))
-        (sentinel (or (plist-get args :sentinel) #'compilation-sentinel)))
+        (sentinel (or (plist-get args :sentinel) #'compilation-sentinel))
+        (file-buffer (current-buffer)))
     (rustic-compilation-setup-buffer buf directory mode)
     (setq next-error-last-buffer buf)
     (unless (plist-get args :no-display)
@@ -294,6 +296,7 @@ ARGS is a plist that affects how the process is run.
       (rustic-make-process :name process
                            :buffer buf
                            :command command
+                           :file-buffer file-buffer
                            :filter #'rustic-compilation-filter
                            :sentinel sentinel
                            :file-handler t))))
diff --git a/rustic.el b/rustic.el
index 2d97db19..b9a2e081 100644
--- a/rustic.el
+++ b/rustic.el
@@ -1,6 +1,6 @@
 ;;; rustic.el --- Rust development environment -*-lexical-binding: t-*-
 
-;; Version: 2.5
+;; Version: 2.6
 ;; Author: Mozilla
 ;;
 ;; Keywords: languages
diff --git a/test/rustic-cargo-test.el b/test/rustic-cargo-test.el
index 5976f47b..c4658c8d 100644
--- a/test/rustic-cargo-test.el
+++ b/test/rustic-cargo-test.el
@@ -201,5 +201,29 @@ fn test21() {
              (buffer (process-buffer proc)))
         (while (eq (process-status proc) 'run)
           (sit-for 0.01))
+
+        (should (string= (s-join " " (process-get proc 'command))
+                             (concat (rustic-cargo-bin) " check "
+                                     rustic-cargo-check-arguments)))
+
         (with-current-buffer buffer
           (should (string-match "^warning:\s" (buffer-substring-no-properties (point-min) (point-max)))))))))
+
+(ert-deftest rustic-cargo-test-test ()
+  (let* ((string "mod tests {
+#[test]
+fn test() {
+}
+}")
+         (buf (rustic-test-count-error-helper-new string))
+         (default-directory (buffer-file-name buf)))
+    (with-current-buffer buf
+      (let* ((proc (rustic-cargo-test))
+             (buffer (process-buffer proc)))
+        (while (eq (process-status proc) 'run)
+          (sit-for 0.01))
+        (with-current-buffer buffer
+          (should (eq major-mode 'rustic-cargo-test-mode)))
+        (should (string= (s-join " " (process-get proc 'command))
+                         (concat (rustic-cargo-bin) " test "
+                                 rustic-default-test-arguments)))))))
diff --git a/test/rustic-compile-test.el b/test/rustic-compile-test.el
index de3f405d..46e6c409 100644
--- a/test/rustic-compile-test.el
+++ b/test/rustic-compile-test.el
@@ -153,6 +153,7 @@
         (should (= compilation-num-errors-found 1))))))
 
 (ert-deftest rustic-test-cargo-test ()
+  ;; NOTE: this doesn't seem to be the case anymore
   ;; compilation-num-errors-found would be 8 with regular compilaton mode
   ;; due to parsing issues https://github.com/rust-lang/rust-mode/pull/254
   (let ((rustic-compile-backtrace "full"))
@@ -209,19 +210,32 @@
       (with-current-buffer (get-buffer rustic-test-buffer-name)
         (should (= compilation-num-errors-found 10))))))
 
-;; ;; TODO: parsing doesn't work
-;; (ert-deftest rustic-test-count-warnings ()
-;;   (let* ((string "fn main() {
-;;                        let v1 = vec![1, 2, 3];
-;;                        let v2 = vec![1, 2, 3];
-;;                     }")
-;;          (default-directory (rustic-test-count-error-helper string))
-;;          (proc (rustic-compilation-start (split-string "cargo build"))))
-;;     (while (eq (process-status proc) 'run)
-;;       (sit-for 0.1))
-;;     (with-current-buffer (get-buffer rustic-compilation-buffer-name)
-;;       (should (= compilation-num-warnings-found 1)))))
-
-
-
-
+(ert-deftest rustic-test-count-warnings ()
+  (let* ((string "fn main() {
+                       let v1 = vec![1, 2, 3];
+                       let v2 = vec![1, 2, 3];
+                       let v3 = vec![1, 2, 3];
+                       let v4 = vec![1, 2, 3];
+                       let v5 = vec![1, 2, 3];
+                       let v6 = vec![1, 2, 3];
+                       let v7 = vec![1, 2, 3];
+                       let v8 = vec![1, 2, 3];
+                       let v9 = vec![1, 2, 3];
+                       let v10 = vec![1, 2, 3];
+                       let v11 = vec![1, 2, 3];
+                       let v12 = vec![1, 2, 3];
+                       let v13 = vec![1, 2, 3];
+                       let v14 = vec![1, 2, 3];
+                       let v15 = vec![1, 2, 3];
+                       let v16 = vec![1, 2, 3];
+                       let v17 = vec![1, 2, 3];
+                       let v18 = vec![1, 2, 3];
+                       let v19 = vec![1, 2, 3];
+                       let v20 = vec![1, 2, 3];
+                    }")
+         (default-directory (rustic-test-count-error-helper string))
+         (proc (rustic-compilation-start (split-string "cargo build"))))
+    (while (eq (process-status proc) 'run)
+      (sit-for 0.1))
+    (with-current-buffer (get-buffer rustic-compilation-buffer-name)
+      (should (= compilation-num-warnings-found 20)))))
diff --git a/test/rustic-workspace-test.el b/test/rustic-workspace-test.el
index df9c3da6..016c7b52 100644
--- a/test/rustic-workspace-test.el
+++ b/test/rustic-workspace-test.el
@@ -1,11 +1,13 @@
 ;; -*- lexical-binding: t -*-
 ;; Before editing, eval (load-file "test-helper.el")
 
-(ert-deftest rust-test-workspace-location ()
+(ert-deftest rust-test-workspace-crate-location ()
   (should (equal (funcall rustic-compile-directory-method) default-directory))
-  (let* ((test-workspace (expand-file-name "test/test-project/test-workspace/" default-directory))
-         (default-directory test-workspace))
-    (should (equal (funcall rustic-compile-directory-method) test-workspace))))
+  (let* ((test-workspace (expand-file-name "test/test-project/"))
+         (test-crate (expand-file-name "test/test-project/crates/test-crate/")))
+    (let ((default-directory (expand-file-name "src" test-crate)))
+      (should (string= (rustic-buffer-workspace) test-workspace))
+      (should (string= (rustic-buffer-crate) test-crate)))))
 
 ;; just test if project-root function works for different versions
 (ert-deftest rust-test-project-root ()
diff --git a/test/test-project/Cargo.lock b/test/test-project/Cargo.lock
new file mode 100644
index 00000000..be5aa8f9
--- /dev/null
+++ b/test/test-project/Cargo.lock
@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "test-workspace"
+version = "0.0.1"
diff --git a/test/test-project/Cargo.toml b/test/test-project/Cargo.toml
index f741b14a..2abd9359 100644
--- a/test/test-project/Cargo.toml
+++ b/test/test-project/Cargo.toml
@@ -1 +1,2 @@
-# Dummy file needed for test
+[workspace]
+members = ["crates/*"]
\ No newline at end of file
diff --git a/test/test-project/crates/test-crate/Cargo.toml b/test/test-project/crates/test-crate/Cargo.toml
new file mode 100644
index 00000000..3223ebea
--- /dev/null
+++ b/test/test-project/crates/test-crate/Cargo.toml
@@ -0,0 +1,3 @@
+[package]
+name = "test-workspace"
+version = "0.0.1"
\ No newline at end of file
diff --git a/test/test-project/crates/test-crate/src/lib.rs b/test/test-project/crates/test-crate/src/lib.rs
new file mode 100644
index 00000000..c7452f6f
--- /dev/null
+++ b/test/test-project/crates/test-crate/src/lib.rs
@@ -0,0 +1 @@
+uuse libc;
diff --git a/test/test-project/test-workspace/Cargo.toml b/test/test-project/test-workspace/Cargo.toml
deleted file mode 100644
index f741b14a..00000000
--- a/test/test-project/test-workspace/Cargo.toml
+++ /dev/null
@@ -1 +0,0 @@
-# Dummy file needed for test