bug#22878: 25.1.50; Emacs hangs on startup

bug#22878: 25.1.50; Emacs hangs on startup

[Mark Karpov]

I test startup of my Emacs on Travis CI with this python script:

https://github.com/mrkkrp/dot-emacs/blob/master/test-startup.py

Some time ago (last successful build was on February 22 2016), startup
started to hang with Emacs 25 master. I'm perfectly sure that this is
not due to my configuration. Looks like this:

https://travis-ci.org/mrkkrp/dot-emacs/builds/112443741#L230

I reported similar issue some time ago and it was fixed. I think it's
some sort of regression again. Perhaps you could add test to prevent
problems of this sort in the future?



In GNU Emacs 25.1.50.7 (x86_64-unknown-linux-gnu, GTK+ Version 3.18.7)
 of 2016-02-18 built on arch
Repository revision: 5a0472e8ea9128f75bca04f5f65682ae8280c208
Windowing system distributor 'The X.Org Foundation', version 11.0.11801000
Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GCONF GSETTINGS
NOTIFY ACL GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11

Important settings:
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix

Major mode: H

Minor modes in effect:
  interactive-haskell-mode: t
  haskell-indentation-mode: t
  magit-auto-revert-mode: t
  global-git-commit-mode: t
  async-bytecomp-package-mode: t
  shell-dirtrack-mode: t
  diff-auto-refine-mode: t
  whitespace-mode: t
  hl-todo-mode: t
  flycheck-color-mode-line-mode: t
  yas-global-mode: t
  yas-minor-mode: t
  vimish-fold-global-mode: t
  vimish-fold-mode: t
  show-paren-mode: t
  rich-minority-mode: t
  minibuffer-electric-default-mode: t
  ivy-mode: t
  global-auto-revert-mode: t
  auto-revert-mode: t
  display-time-mode: t
  delete-selection-mode: t
  cyphejor-mode: t
  ace-popup-menu-mode: t
  smartparens-global-mode: t
  smartparens-mode: t
  flyspell-mode: t
  flyspell-lazy-mode: t
  mk-highlight-line-mode: t
  modalka-mode: t
  flycheck-mode: t
  tooltip-mode: t
  global-eldoc-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  auto-fill-function: message-do-auto-fill
  transient-mark-mode: t
  auto-fill-mode: 1

Recent messages:
Reading active file from archive via nnfolder...done
Reading active file via nndraft...done
Checking new news...done
Are you sure you want to quit reading news? (y or n) y
Saving file /home/mark/.newsrc...
Wrote /home/mark/.newsrc
Saving /home/mark/.newsrc.eld...
Saving file /home/mark/.newsrc.eld...
Wrote /home/mark/.newsrc.eld
Saving /home/mark/.newsrc.eld...done

Load-path shadows:
None found.

Features:
(browse-url vc vc-dispatcher haskell-doc inf-haskell haskell-decl-scan
imenu haskell haskell-completions haskell-load haskell-commands
highlight-uses-mode haskell-modules haskell-sandbox haskell-repl
haskell-debug haskell-interactive-mode haskell-presentation-mode
haskell-collapse haskell-navigate-imports haskell-compile
haskell-process haskell-session url-util json map haskell-hoogle
smartparens-haskell haskell-mode haskell-font-lock haskell-indentation
haskell-string haskell-sort-imports haskell-lexeme haskell-align-imports
haskell-compat haskell-complete-module flymake compile dabbrev linum
magit-blame magit-stash magit-bisect magit-remote magit-commit
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code-pages mule custom widget hashtable-print-readable backquote
dbusbind inotify dynamic-setting system-font-setting font-render-setting
move-toolbar gtk x-toolkit x multi-tty make-network-process emacs)

Memory information:
((conses 16 522563 60252)
 (symbols 48 47566 45)
 (miscs 40 203 551)
 (strings 32 110929 16047)
 (string-bytes 1 3377131)
 (vectors 16 79262)
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 (buffers 976 25)
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bug#22878: 25.1.50; Emacs hangs on startup

[Eli Zaretskii]

> From: Mark Karpov <markkarpov@openmailbox.org>
> Date: Wed, 02 Mar 2016 10:19:13 +0600
> 
> I test startup of my Emacs on Travis CI with this python script:
> 
> https://github.com/mrkkrp/dot-emacs/blob/master/test-startup.py
> 
> Some time ago (last successful build was on February 22 2016), startup
> started to hang with Emacs 25 master. I'm perfectly sure that this is
> not due to my configuration. Looks like this:
> 
> https://travis-ci.org/mrkkrp/dot-emacs/builds/112443741#L230
> 
> I reported similar issue some time ago and it was fixed. I think it's
> some sort of regression again. Perhaps you could add test to prevent
> problems of this sort in the future?

That previous time we were just lucky: the problem disappeared after a
merge from the other branch.  Not sure we even know what was the
problem back then.

Your report is not detailed enough, as you don't show some part of the
script you run, and don't tell where exactly it hangs.  Please provide
those details to allow further investigation.

Thanks.

bug#22878: 25.1.50; Emacs hangs on startup

[Mark Karpov]

Eli Zaretskii <eliz@gnu.org> writes:

> Your report is not detailed enough, as you don't show some part of the
> script you run, and don't tell where exactly it hangs.  Please provide
> those details to allow further investigation.

.travis.yml just executes that python script. I don't know where it
hangs exactly, but here is Emacs Lisp that is executed:

https://github.com/mrkkrp/dot-emacs/blob/master/init.el

And here is ‘mk-compile-init-files’ (although I'm sure in hangs *before*
it, because compiling of files pints to console):

https://github.com/mrkkrp/dot-emacs/blob/master/mk/mk-utils.el#L463

So basically, I think problem is here:

  (add-to-list 'package-archives '("melpa" . "http://melpa.org/packages/"))
  
  (package-initialize)
  
  (unless package-archive-contents
    (package-refresh-contents))
  
  (dolist (package package-selected-packages)
    (when (and (assq package package-archive-contents)
               (not (package-installed-p package)))
      (package-install package t)))

The logs confirm this:

  Starting initial startup
  
  Loading /home/travis/build/mrkkrp/dot-emacs/init.el (source)...
  
  Importing package-keyring.gpg...
  
  Importing package-keyring.gpg...done
  
  Making url-show-status local to  *http melpa.org:80* while let-bound!
  
  No output has been received in the last 10m0s, this potentially
  indicates a stalled build or something wrong with the build itself.

Previously it also had to do with package system with error messages (if
I remember correctly) like “incomprehensible buffer”.

Hope it helps.

bug#22878: 25.1.50; Emacs hangs on startup

[Eli Zaretskii]

> From: Mark Karpov <markkarpov@openmailbox.org>
> Cc: 22878@debbugs.gnu.org
> Date: Thu, 03 Mar 2016 12:13:03 +0600
> 
> .travis.yml just executes that python script. I don't know where it
> hangs exactly, but here is Emacs Lisp that is executed:
> 
> https://github.com/mrkkrp/dot-emacs/blob/master/init.el
> 
> And here is ‘mk-compile-init-files’ (although I'm sure in hangs *before*
> it, because compiling of files pints to console):
> 
> https://github.com/mrkkrp/dot-emacs/blob/master/mk/mk-utils.el#L463
> 
> So basically, I think problem is here:
> 
>   (add-to-list 'package-archives '("melpa" . "http://melpa.org/packages/"))
>   
>   (package-initialize)
>   
>   (unless package-archive-contents
>     (package-refresh-contents))
>   
>   (dolist (package package-selected-packages)
>     (when (and (assq package package-archive-contents)
>                (not (package-installed-p package)))
>       (package-install package t)))
> 
> The logs confirm this:
> 
>   Starting initial startup
>   
>   Loading /home/travis/build/mrkkrp/dot-emacs/init.el (source)...
>   
>   Importing package-keyring.gpg...
>   
>   Importing package-keyring.gpg...done
>   
>   Making url-show-status local to  *http melpa.org:80* while let-bound!
>   
>   No output has been received in the last 10m0s, this potentially
>   indicates a stalled build or something wrong with the build itself.

I'm still not sure I'm following.  Which of the above forms is the one
where Emacs hangs?

Also, can you attach a debugger to it when it hangs and tell what you
see in the debugger?

Thanks.

bug#22878: 25.1.50; Emacs hangs on startup

[Mark Karpov]

FYI, it works again with current master:

https://travis-ci.org/mrkkrp/dot-emacs#L4425

Maybe you can close this, but I'm not sure this won't break again.

bug#22878: 25.1.50; Emacs hangs on startup

[Eli Zaretskii]

> From: Mark Karpov <markkarpov@openmailbox.org>
> CC: 22878@debbugs.gnu.org
> Date: Sun, 13 Mar 2016 10:46:14 +0600
> 
> 
> FYI, it works again with current master:
> 
> https://travis-ci.org/mrkkrp/dot-emacs#L4425
> 
> Maybe you can close this, but I'm not sure this won't break again.

Thanks.  I'd still prefer to have my questions answered (probably with
an older build which did show the problem).  Otherwise, we are relying
on luck to solve this problem, which usually doesn't work.