diff --git a/apt-widget/apt-widget.lua b/apt-widget/apt-widget.lua
index 0bd6e3d..a28a42c 100644
--- a/apt-widget/apt-widget.lua
+++ b/apt-widget/apt-widget.lua
@@ -21,7 +21,6 @@ local function script_path()
 	return str:match("(.*/)")
 end
 
-local HOME_DIR = os.getenv("HOME")
 local WIDGET_DIR = script_path()
 local ICONS_DIR = WIDGET_DIR .. "/icons/"
 
diff --git a/cpu-widget/cpu-widget.lua b/cpu-widget/cpu-widget.lua
index 23b61f6..3cd0e8d 100644
--- a/cpu-widget/cpu-widget.lua
+++ b/cpu-widget/cpu-widget.lua
@@ -34,7 +34,7 @@ local process_rows = {
 }
 
 -- Remove spaces at end and beggining of a string
-function trim(s)
+local function trim(s)
    return (s:gsub("^%s*(.-)%s*$", "%1"))
 end
 
diff --git a/docker-widget/docker.lua b/docker-widget/docker.lua
index 36cd320..27465f9 100644
--- a/docker-widget/docker.lua
+++ b/docker-widget/docker.lua
@@ -63,7 +63,7 @@ local docker_widget = wibox.widget {
 }
 
 local parse_container = function(line)
-    local name, id, image, how_long, size, actual_status
+    local name, id, image, status, how_long, size, actual_status
     if string.find(line, '::Created::') then
         name, id, image, size = line:match(DOCKER_CREATED_STATUS_PATTERN)
         actual_status = 'Created'
@@ -182,14 +182,19 @@ local function worker(user_args)
                         status_icon:set_opacity(0.2)
                         status_icon:emit_signal('widget::redraw_needed')
 
-                        spawn.easy_async(executable_name .. ' ' .. command .. ' ' .. container['name'], function(_, stderr)
-                            if stderr ~= '' then show_warning(stderr) end
-                            spawn.easy_async(string.format(LIST_CONTAINERS_CMD, executable_name, number_of_containers),
-                                function(stdout, container_errors)
-                                    rebuild_widget(stdout, container_errors)
-                                end)
-                            end)
-                    end) ) )
+                        spawn.easy_async(executable_name .. ' ' .. command .. ' ' .. container['name'],
+                            function(_, stderr)
+                                if stderr ~= '' then show_warning(stderr) end
+                                spawn.easy_async(
+                                    string.format(LIST_CONTAINERS_CMD,executable_name, number_of_containers),
+                                    function(stdout, container_errors)
+                                        rebuild_widget(stdout, container_errors)
+                                    end
+                                )
+                            end
+                        )
+                    end) )
+                )
             else
                 start_stop_button = nil
             end
@@ -241,12 +246,14 @@ local function worker(user_args)
                         status_icon:set_opacity(0.2)
                         status_icon:emit_signal('widget::redraw_needed')
 
-                        awful.spawn.easy_async(executable_name .. ' ' .. command .. ' ' .. container['name'], function(_, stderr)
-                            if stderr ~= '' then show_warning(stderr) end
-                            spawn.easy_async(string.format(LIST_CONTAINERS_CMD, executable_name, number_of_containers),
-                                function(stdout, container_errors)
-                                    rebuild_widget(stdout, container_errors)
-                                end)
+                        awful.spawn.easy_async(executable_name .. ' ' .. command .. ' ' .. container['name'],
+                            function(_, stderr)
+                                if stderr ~= '' then show_warning(stderr) end
+                                spawn.easy_async(string.format(LIST_CONTAINERS_CMD,
+                                                               executable_name, number_of_containers),
+                                    function(stdout, container_errors)
+                                        rebuild_widget(stdout, container_errors)
+                                    end)
                             end)
                     end) ) )
             else
@@ -273,12 +280,15 @@ local function worker(user_args)
                 }
                 delete_button:buttons(
                         gears.table.join( awful.button({}, 1, function()
-                            awful.spawn.easy_async(executable_name .. ' rm ' .. container['name'], function(_, rm_stderr)
-                                if rm_stderr ~= '' then show_warning(rm_stderr) end
-                                spawn.easy_async(string.format(LIST_CONTAINERS_CMD, executable_name, number_of_containers),
-                                    function(lc_stdout, lc_stderr)
-                                        rebuild_widget(lc_stdout, lc_stderr) end)
-                                    end)
+                            awful.spawn.easy_async(executable_name .. ' rm ' .. container['name'],
+                                function(_, rm_stderr)
+                                    if rm_stderr ~= '' then show_warning(rm_stderr) end
+                                    spawn.easy_async(string.format(LIST_CONTAINERS_CMD,
+                                                                   executable_name, number_of_containers),
+                                        function(lc_stdout, lc_stderr)
+                                            rebuild_widget(lc_stdout, lc_stderr)
+                                        end)
+                                end)
                         end)))
 
                 local old_cursor, old_wibox
diff --git a/mpris-widget/init.lua b/mpris-widget/init.lua
index 1402ba3..eb2dda6 100644
--- a/mpris-widget/init.lua
+++ b/mpris-widget/init.lua
@@ -179,13 +179,14 @@ local function worker()
     watch(string.format(GET_MPD_CMD, "'" .. default_player .. "'"), 1, update_graphic, mpris_widget)
 
     local mpris_popup = awful.widget.watch(
-        "playerctl metadata --format '{{ status }}: {{ artist }} - {{ title }}\nDuration: {{ duration(position) }}/{{ duration(mpris:length) }}'",
+        "playerctl metadata --format '{{ status }}: {{ artist }} - {{ title }}\n"
+        .. "Duration: {{ duration(position) }}/{{ duration(mpris:length) }}'",
         1,
-        function(popup, stdout)
+        function(callback_popup, stdout)
             local metadata = stdout
-            if popup.visible then
-                popup:get_widget().text = metadata
-                popup:move_next_to(mouse.current_widget_geometry)
+            if callback_popup.visible then
+                callback_popup:get_widget().text = metadata
+                callback_popup:move_next_to(mouse.current_widget_geometry)
             end
         end,
         awful.popup {