bug#20817: 25.0.50; Problems with upgrading of packages

[Mark Karpov]

Here's what I've got (copy-pasted «as is»):

Debugger entered--Lisp error: (error "Package `([cl-struct-package-desc names 
(20150617 359) Namespaces for emacs-lisp. Avoid name clobbering without hiding 
symbols. ((emacs (24 1)) (cl-lib (0 5))) tar melpa nil ((:url . 
http://github.com/Bruce-Connor/names) (:keywords extensions lisp)) nil] 
dont-select)-' is unavailable")
  signal(error ("Package `([cl-struct-package-desc names (20150617 359) 
Namespaces for emacs-lisp. Avoid name clobbering without hiding symbols. 
((emacs (24 1)) (cl-lib (0 5))) tar melpa nil ((:url . 
http://github.com/Bruce-Connor/names) (:keywords extensions lisp)) nil] 
dont-select)-' is unavailable"))
  error("Package `%s-%s' is unavailable" ([cl-struct-package-desc names 
(20150617 359) "Namespaces for emacs-lisp. Avoid name clobbering without hiding 
symbols." ((emacs (24 1)) (cl-lib (0 5))) tar "melpa" nil ((:url . 
"http://github.com/Bruce-Connor/names";) (:keywords "extensions" "lisp")) nil] 
dont-select) "")
  package-compute-transaction(nil ((([cl-struct-package-desc names (20150617 
359) "Namespaces for emacs-lisp. Avoid name clobbering without hiding symbols." 
((emacs (24 1)) (cl-lib (0 5))) tar "melpa" nil ((:url . 
"http://github.com/Bruce-Connor/names";) (:keywords "extensions" "lisp")) nil] 
dont-select))))
  #[513 
"\302\303\304\"\210\305.!\203/.
G\306Y\203/.
\307H>\203/.
\307H>\204).\310\311\312.D\"\210.\313H\2020.
.\204@.\314.!\204@.\315.
       
B!\210\210\305.!\203w.
G\306Y\203w.
\307H>\203w.\316.!?\205}.\317.C.\307H>\204p.\310\311\312.D\"\210.\320H\"\202}.\317\321.CC\"\211\203\207.\322.!\202\215.\323\324\325.!\"\207"
 [cl-struct-package-desc-tags package-selected-packages add-hook 
post-command-hook package-menu--post-refresh vectorp 10 0 signal 
wrong-type-argument package-desc 1 package--user-selected-p 
package--save-selected-packages package-installed-p package-compute-transaction 
4 nil package-download-transaction message "`%s' is already installed" 
package-desc-full-name] 8 
("/usr/local/share/emacs/25.0.50/lisp/emacs-lisp/package.elc" . 77294) 
(byte-code "\204.\302\303!\210       \204.\304 
\210\305\306\307\310\311\312\313     \"\"\311\303$!\311D\207" 
[package--initialized package-archive-contents package-initialize t 
package-refresh-contents intern completing-read "Install package: " delq nil 
mapcar #[257 "\300.@!?\205\f.\301.@!\207" [package-installed-p symbol-name] 3 
"\n\n(fn ELT)"]] 8)](([cl-struct-package-desc names (20150617 359) "Namespaces 
for emacs-lisp. Avoid name clobbering without hiding symbols." ((emacs (24 1)) 
(cl-lib (0 5))) tar "melpa" nil ((:url . 
"http://github.com/Bruce-Connor/names";) (:keywords "extensions" "lisp")) nil] 
dont-select) t)
  apply(#[513 
"\302\303\304\"\210\305.!\203/.
G\306Y\203/.
\307H>\203/.
\307H>\204).\310\311\312.D\"\210.\313H\2020.
.\204@.\314.!\204@.\315.
 
B!\210\210\305.!\203w.
G\306Y\203w.
\307H>\203w.\316.!?\205}.\317.C.\307H>\204p.\310\311\312.D\"\210.\320H\"\202}.\317\321.CC\"\211\203\207.\322.!\202\215.\323\324\325.!\"\207"
 [cl-struct-package-desc-tags package-selected-packages add-hook 
post-command-hook package-menu--post-refresh vectorp 10 0 signal 
wrong-type-argument package-desc 1 package--user-selected-p 
package--save-selected-packages package-installed-p package-compute-transaction 
4 nil package-download-transaction message "`%s' is already installed" 
package-desc-full-name] 8 
("/usr/local/share/emacs/25.0.50/lisp/emacs-lisp/package.elc" . 77294) 
(byte-code "\204.\302\303!\210       \204.\304 
\210\305\306\307\310\311\312\313     \"\"\311\303$!\311D\207" 
[package--initialized package-archive-contents package-initialize t 
package-refresh-contents intern completing-read "Install package: " delq nil 
mapcar #[257 "\300.@!?\205\f.\301.@!\207" [package-installed-p symbol-name] 3 
"\n\n(fn ELT)"]] 8)] (([cl-struct-package-desc names (20150617 359) "Namespaces 
for emacs-lisp. Avoid name clobbering without hiding symbols." ((emacs (24 1)) 
(cl-lib (0 5))) tar "melpa" nil ((:url . 
"http://github.com/Bruce-Connor/names";) (:keywords "extensions" "lisp")) nil] 
dont-select) t))
  package-install([cl-struct-package-desc names (20150617 359) "Namespaces for 
emacs-lisp. Avoid name clobbering without hiding symbols." ((emacs (24 1)) 
(cl-lib (0 5))) tar "melpa" nil ((:url . 
"http://github.com/Bruce-Connor/names";) (:keywords "extensions" "lisp")) nil] 
dont-select)
  package-menu--perform-transaction(([cl-struct-package-desc names (20150617 
359) "Namespaces for emacs-lisp. Avoid name clobbering without hiding symbols." 
((emacs (24 1)) (cl-lib (0 5))) tar "melpa" nil ((:url . 
"http://github.com/Bruce-Connor/names";) (:keywords "extensions" "lisp")) nil] 
[cl-struct-package-desc haskell-mode (20150618 309) "A Haskell editing mode" 
((cl-lib (0 5))) tar "melpa" nil nil nil] [cl-struct-package-desc clojure-mode 
(20150614 1628) "Major mode for Clojure code" ((emacs (24 3))) single "melpa" 
nil ((:url . "http://github.com/clojure-emacs/clojure-mode";) (:keywords 
"languages" "clojure" "clojurescript" "lisp")) nil] [cl-struct-package-desc 
cider (20150617 753) "Clojure Interactive Development Environment that Rocks" 
((clojure-mode (4 0 0)) (dash (2 4 1)) (pkg-info (0 4)) (emacs (24 3)) (queue 
(0 1 1))) tar "melpa" nil ((:url . "http://www.github.com/clojure-emacs/cider";) 
(:keywords "languages" "clojure" "cider")) nil] [cl-struct-package-desc avy 
(20150615 1048) "set-based completion" ((emacs (24 1)) (cl-lib (0 5))) single 
"melpa" nil ((:url . "https://github.com/abo-abo/avy";) (:keywords "point" 
"location")) nil] [cl-struct-package-desc aggressive-indent (20150618 545) 
"Minor mode to aggressively keep your code always indented" ((emacs (24 1)) 
(names (20150125 9)) (cl-lib (0 5))) single "melpa" nil ((:url . 
"http://github.com/Malabarba/aggressive-indent-mode";) (:keywords "indent" 
"lisp" "maint" "tools")) nil]) ([cl-struct-package-desc names (20150611 636) 
"Namespaces for emacs-lisp. Avoid name clobbering without hiding symbols." 
((emacs (24 1)) (cl-lib (0 5))) nil nil 
"/home/mark/.emacs.d/elpa/names-20150611.636" ((:keywords "extensions" "lisp") 
(:url . "http://github.com/Bruce-Connor/names";)) nil] [cl-struct-package-desc 
clojure-mode (20150611 1524) "Major mode for Clojure code" ((emacs (24 3))) nil 
nil "/home/mark/.emacs.d/elpa/clojure-mode-20150611.1524" ((:keywords 
"languages" "clojure" "clojurescript" "lisp") (:url . 
"http://github.com/clojure-emacs/clojure-mode";)) nil] [cl-struct-package-desc 
haskell-mode (20150611 2343) "A Haskell editing mode" ((cl-lib (0 5))) nil nil 
"/home/mark/.emacs.d/elpa/haskell-mode-20150611.2343" nil nil] 
[cl-struct-package-desc cider (20150612 315) "Clojure Interactive Development 
Environment that Rocks" ((clojure-mode (4 0 0)) (dash (2 4 1)) (pkg-info (0 4)) 
(emacs (24 3)) (queue (0 1 1))) nil nil 
"/home/mark/.emacs.d/elpa/cider-20150612.315" ((:keywords "languages" "clojure" 
"cider") (:url . "http://www.github.com/clojure-emacs/cider";)) nil] 
[cl-struct-package-desc avy (20150608 404) "set-based completion" ((emacs (24 
1)) (cl-lib (0 5))) nil nil "/home/mark/.emacs.d/elpa/avy-20150608.404" 
((:keywords "point" "location") (:url . "https://github.com/abo-abo/avy";)) nil] 
[cl-struct-package-desc aggressive-indent (20150516 238) "Minor mode to 
aggressively keep your code always indented" ((emacs (24 1)) (names (20150125 
9)) (cl-lib (0 5))) nil nil 
"/home/mark/.emacs.d/elpa/aggressive-indent-20150516.238" ((:keywords "indent" 
"lisp" "maint" "tools") (:url . 
"http://github.com/Malabarba/aggressive-indent-mode";)) nil]))
  package-menu-execute()
  funcall-interactively(package-menu-execute)
  #<subr call-interactively>(package-menu-execute nil nil)
  ad-Advice-call-interactively(#<subr call-interactively> package-menu-execute 
nil nil)
  apply(ad-Advice-call-interactively #<subr call-interactively> 
(package-menu-execute nil nil))
  call-interactively(package-menu-execute nil nil)
  command-execute(package-menu-execute)

…and in *Messages*:

Thursday, 18 June 2015
Debug on Error enabled globally
Importing package-keyring.gpg...done
Package refresh done
6 packages can be upgraded; type `U' to mark them for upgrading.
6 packages marked for upgrading.
Upgrade these 6 packages (aggressive-indent-20150516.238, avy-20150608.404, 
cider-20150612.315, haskell-mode-20150611.2343, clojure-mode-20150611.1524, 
names-20150611.636)? (y or n) y
Package menu: Operation started [Upgrading 6]
Entering debugger...
previous-line: Beginning of buffer [4 times]