Uploaded 1.2.17 to xenial-proposed

apt (1.2.17) xenial; urgency=medium

  [ David Kalnischkies ]
  * apt-key: warn instead of fail on unreadable keyrings (LP: #1642386)
  * show apt-key warnings in apt update (Closes: 834973)

  [ Julian Andres Klode ]
  * test-releasefile-verification: installaptold: Clean up before run

 -- Julian Andres Klode <juli...@ubuntu.com>  Wed, 23 Nov 2016 20:09:27
+0100


** Changed in: apt (Ubuntu Xenial)
       Status: Triaged => In Progress

** Description changed:

+ [Impact]
+ Breaks update on systems with unreadable GPG keys
+ 
+ [Test case]
+ Run apt update with an unreadable GPG key file in trusted.gpg.d. This should 
work and (stretch goal) print a warning about the key being unreadable.
+ 
+ [Regression potential]
+ Low risk. We check that very situation in the automated test suite now like 
we did a lot of other situations before. The fix has been available in apt 
since 1.3_rc3 on Aug 30, and there have been no regressions reported since then.
+ 
+ [Original bug report]
  Hello, a recent apt update appears to have broken apt entirely.
  
  A coworker reported seeing troubles: http://paste.ubuntu.com/23487135/
  
  To test, I upgraded my laptop then immediately re-ran apt-get update &&
  apt-get -u dist-upgrade:
  
  sarnold@hunt:~/Downloads$ sudo apt-get update && sudo apt-get -u dist-upgrade
  Hit:1 http://mirrors.kernel.org/ubuntu xenial InRelease
- Hit:2 http://mirrors.kernel.org/ubuntu xenial-updates InRelease               
                                    
- Hit:3 http://mirrors.kernel.org/ubuntu xenial-security InRelease              
                                    
- Ign:4 http://mirrors.kernel.org/ubuntu precise InRelease                      
                                    
- Get:5 http://mirrors.kernel.org/ubuntu precise-updates InRelease [55.7 kB]    
                                    
- Get:6 http://mirrors.kernel.org/ubuntu precise-security InRelease [55.7 kB]   
                                    
- Get:7 http://mirrors.kernel.org/ubuntu precise-proposed InRelease [55.7 kB]   
                                    
- Ign:8 http://mirrors.kernel.org/ubuntu trusty InRelease                       
                                    
- Get:9 http://mirrors.kernel.org/ubuntu trusty-updates InRelease [65.9 kB]     
                                    
- Hit:10 http://mirrors.kernel.org/ubuntu trusty-security InRelease             
                                    
- Get:11 http://mirrors.kernel.org/ubuntu trusty-proposed InRelease [65.9 kB]   
                                    
- Get:12 http://mirrors.kernel.org/ubuntu xenial-proposed InRelease [247 kB]    
                                    
- Err:1 http://mirrors.kernel.org/ubuntu xenial InRelease                       
                                    
-   At least one invalid signature was encountered.
- Hit:13 http://security.debian.org jessie/updates InRelease                    
                                    
- Err:2 http://mirrors.kernel.org/ubuntu xenial-updates InRelease               
                                    
-   At least one invalid signature was encountered.
- Get:14 http://mirrors.kernel.org/ubuntu yakkety InRelease [247 kB]            
                                    
- Err:3 http://mirrors.kernel.org/ubuntu xenial-security InRelease              
                                    
-   At least one invalid signature was encountered.
- Hit:15 http://mirrors.kernel.org/ubuntu yakkety-updates InRelease             
                                    
- Get:16 http://mirrors.kernel.org/ubuntu yakkety-security InRelease [93.3 kB]  
                                    
- Hit:17 http://security.debian.org wheezy/updates InRelease                    
                                    
- Get:18 http://mirrors.kernel.org/ubuntu yakkety-proposed InRelease [95.7 kB]  
                                    
- Hit:19 http://mirrors.kernel.org/ubuntu zesty InRelease                       
                                    
- Hit:20 http://mirrors.kernel.org/ubuntu zesty-updates InRelease               
                                    
- Hit:21 http://mirrors.kernel.org/ubuntu zesty-security InRelease              
                                    
- Err:5 http://mirrors.kernel.org/ubuntu precise-updates InRelease              
                                    
-   At least one invalid signature was encountered.
- Hit:22 http://mirrors.kernel.org/ubuntu zesty-proposed InRelease              
                                    
- Hit:23 http://mirrors.kernel.org/ubuntu precise Release                       
                                    
- Hit:24 http://mirrors.kernel.org/ubuntu trusty Release                        
                                    
- Ign:25 http://archive.canonical.com/ubuntu precise InRelease                  
                                    
- Hit:26 http://security.ubuntu.com/ubuntu xenial-security InRelease            
                                    
+ Hit:2 http://mirrors.kernel.org/ubuntu xenial-updates InRelease
+ Hit:3 http://mirrors.kernel.org/ubuntu xenial-security InRelease
+ Ign:4 http://mirrors.kernel.org/ubuntu precise InRelease
+ Get:5 http://mirrors.kernel.org/ubuntu precise-updates InRelease [55.7 kB]
+ Get:6 http://mirrors.kernel.org/ubuntu precise-security InRelease [55.7 kB]
+ Get:7 http://mirrors.kernel.org/ubuntu precise-proposed InRelease [55.7 kB]
+ Ign:8 http://mirrors.kernel.org/ubuntu trusty InRelease
+ Get:9 http://mirrors.kernel.org/ubuntu trusty-updates InRelease [65.9 kB]
+ Hit:10 http://mirrors.kernel.org/ubuntu trusty-security InRelease
+ Get:11 http://mirrors.kernel.org/ubuntu trusty-proposed InRelease [65.9 kB]
+ Get:12 http://mirrors.kernel.org/ubuntu xenial-proposed InRelease [247 kB]
+ Err:1 http://mirrors.kernel.org/ubuntu xenial InRelease
+   At least one invalid signature was encountered.
+ Hit:13 http://security.debian.org jessie/updates InRelease
+ Err:2 http://mirrors.kernel.org/ubuntu xenial-updates InRelease
+   At least one invalid signature was encountered.
+ Get:14 http://mirrors.kernel.org/ubuntu yakkety InRelease [247 kB]
+ Err:3 http://mirrors.kernel.org/ubuntu xenial-security InRelease
+   At least one invalid signature was encountered.
+ Hit:15 http://mirrors.kernel.org/ubuntu yakkety-updates InRelease
+ Get:16 http://mirrors.kernel.org/ubuntu yakkety-security InRelease [93.3 kB]
+ Hit:17 http://security.debian.org wheezy/updates InRelease
+ Get:18 http://mirrors.kernel.org/ubuntu yakkety-proposed InRelease [95.7 kB]
+ Hit:19 http://mirrors.kernel.org/ubuntu zesty InRelease
+ Hit:20 http://mirrors.kernel.org/ubuntu zesty-updates InRelease
+ Hit:21 http://mirrors.kernel.org/ubuntu zesty-security InRelease
+ Err:5 http://mirrors.kernel.org/ubuntu precise-updates InRelease
+   At least one invalid signature was encountered.
+ Hit:22 http://mirrors.kernel.org/ubuntu zesty-proposed InRelease
+ Hit:23 http://mirrors.kernel.org/ubuntu precise Release
+ Hit:24 http://mirrors.kernel.org/ubuntu trusty Release
+ Ign:25 http://archive.canonical.com/ubuntu precise InRelease
+ Hit:26 http://security.ubuntu.com/ubuntu xenial-security InRelease
  Hit:27 
http://ppa.launchpad.net/ci-train-ppa-service/stable-phone-overlay/ubuntu vivid 
InRelease
- Hit:28 http://ftp.debian.org/debian unstable InRelease                        
                 
- Err:6 http://mirrors.kernel.org/ubuntu precise-security InRelease        
-   At least one invalid signature was encountered.
- Err:7 http://mirrors.kernel.org/ubuntu precise-proposed InRelease             
                 
-   At least one invalid signature was encountered.
- Err:9 http://mirrors.kernel.org/ubuntu trusty-updates InRelease               
                 
-   At least one invalid signature was encountered.
- Ign:29 http://archive.canonical.com/ubuntu trusty InRelease                   
                  
- Hit:30 http://ppa.launchpad.net/snappy-dev/image/ubuntu vivid InRelease       
                  
- Hit:31 http://ftp.debian.org/debian testing InRelease                     
- Err:10 http://mirrors.kernel.org/ubuntu trusty-security InRelease         
-   At least one invalid signature was encountered.
- Err:11 http://mirrors.kernel.org/ubuntu trusty-proposed InRelease             
                  
-   At least one invalid signature was encountered.
- Err:13 http://security.debian.org jessie/updates InRelease                    
                  
-   At least one invalid signature was encountered.
- Hit:32 http://archive.canonical.com/ubuntu xenial InRelease                   
                  
+ Hit:28 http://ftp.debian.org/debian unstable InRelease
+ Err:6 http://mirrors.kernel.org/ubuntu precise-security InRelease
+   At least one invalid signature was encountered.
+ Err:7 http://mirrors.kernel.org/ubuntu precise-proposed InRelease
+   At least one invalid signature was encountered.
+ Err:9 http://mirrors.kernel.org/ubuntu trusty-updates InRelease
+   At least one invalid signature was encountered.
+ Ign:29 http://archive.canonical.com/ubuntu trusty InRelease
+ Hit:30 http://ppa.launchpad.net/snappy-dev/image/ubuntu vivid InRelease
+ Hit:31 http://ftp.debian.org/debian testing InRelease
+ Err:10 http://mirrors.kernel.org/ubuntu trusty-security InRelease
+   At least one invalid signature was encountered.
+ Err:11 http://mirrors.kernel.org/ubuntu trusty-proposed InRelease
+   At least one invalid signature was encountered.
+ Err:13 http://security.debian.org jessie/updates InRelease
+   At least one invalid signature was encountered.
+ Hit:32 http://archive.canonical.com/ubuntu xenial InRelease
  Hit:33 
http://ppa.launchpad.net/ci-train-ppa-service/stable-phone-overlay/ubuntu 
xenial InRelease
- Ign:34 http://ftp.debian.org/debian jessie InRelease                     
- Err:12 http://mirrors.kernel.org/ubuntu xenial-proposed InRelease        
-   At least one invalid signature was encountered.
- Err:14 http://mirrors.kernel.org/ubuntu yakkety InRelease                
-   At least one invalid signature was encountered.
- Hit:35 http://archive.canonical.com/ubuntu yakkety InRelease              
- Err:15 http://mirrors.kernel.org/ubuntu yakkety-updates InRelease         
-   At least one invalid signature was encountered.
- Hit:36 http://ftp.debian.org/debian jessie-updates InRelease              
- Err:16 http://mirrors.kernel.org/ubuntu yakkety-security InRelease        
-   At least one invalid signature was encountered.
- Err:17 http://security.debian.org wheezy/updates InRelease                
-   At least one invalid signature was encountered.
- Hit:37 http://archive.canonical.com/ubuntu zesty InRelease                
- Err:18 http://mirrors.kernel.org/ubuntu yakkety-proposed InRelease        
-   At least one invalid signature was encountered.
- Ign:38 http://ftp.debian.org/debian wheezy InRelease                     
- Err:19 http://mirrors.kernel.org/ubuntu zesty InRelease                  
-   At least one invalid signature was encountered.
- Err:20 http://mirrors.kernel.org/ubuntu zesty-updates InRelease           
-   At least one invalid signature was encountered.
- Hit:39 http://archive.canonical.com/ubuntu precise Release                
- Err:21 http://mirrors.kernel.org/ubuntu zesty-security InRelease          
-   At least one invalid signature was encountered.
- Hit:40 http://ftp.debian.org/debian wheezy-updates InRelease              
- Err:22 http://mirrors.kernel.org/ubuntu zesty-proposed InRelease          
-   At least one invalid signature was encountered.
- Err:41 http://mirrors.kernel.org/ubuntu precise Release.gpg               
-   At least one invalid signature was encountered.
- Hit:42 http://archive.canonical.com/ubuntu trusty Release                
- Err:43 http://mirrors.kernel.org/ubuntu trusty Release.gpg               
-   At least one invalid signature was encountered.
- Hit:44 http://ftp.debian.org/debian jessie Release  
+ Ign:34 http://ftp.debian.org/debian jessie InRelease
+ Err:12 http://mirrors.kernel.org/ubuntu xenial-proposed InRelease
+   At least one invalid signature was encountered.
+ Err:14 http://mirrors.kernel.org/ubuntu yakkety InRelease
+   At least one invalid signature was encountered.
+ Hit:35 http://archive.canonical.com/ubuntu yakkety InRelease
+ Err:15 http://mirrors.kernel.org/ubuntu yakkety-updates InRelease
+   At least one invalid signature was encountered.
+ Hit:36 http://ftp.debian.org/debian jessie-updates InRelease
+ Err:16 http://mirrors.kernel.org/ubuntu yakkety-security InRelease
+   At least one invalid signature was encountered.
+ Err:17 http://security.debian.org wheezy/updates InRelease
+   At least one invalid signature was encountered.
+ Hit:37 http://archive.canonical.com/ubuntu zesty InRelease
+ Err:18 http://mirrors.kernel.org/ubuntu yakkety-proposed InRelease
+   At least one invalid signature was encountered.
+ Ign:38 http://ftp.debian.org/debian wheezy InRelease
+ Err:19 http://mirrors.kernel.org/ubuntu zesty InRelease
+   At least one invalid signature was encountered.
+ Err:20 http://mirrors.kernel.org/ubuntu zesty-updates InRelease
+   At least one invalid signature was encountered.
+ Hit:39 http://archive.canonical.com/ubuntu precise Release
+ Err:21 http://mirrors.kernel.org/ubuntu zesty-security InRelease
+   At least one invalid signature was encountered.
+ Hit:40 http://ftp.debian.org/debian wheezy-updates InRelease
+ Err:22 http://mirrors.kernel.org/ubuntu zesty-proposed InRelease
+   At least one invalid signature was encountered.
+ Err:41 http://mirrors.kernel.org/ubuntu precise Release.gpg
+   At least one invalid signature was encountered.
+ Hit:42 http://archive.canonical.com/ubuntu trusty Release
+ Err:43 http://mirrors.kernel.org/ubuntu trusty Release.gpg
+   At least one invalid signature was encountered.
+ Hit:44 http://ftp.debian.org/debian jessie Release
  Err:26 http://security.ubuntu.com/ubuntu xenial-security InRelease
-   At least one invalid signature was encountered.
+   At least one invalid signature was encountered.
  Err:27 
http://ppa.launchpad.net/ci-train-ppa-service/stable-phone-overlay/ubuntu vivid 
InRelease
-   At least one invalid signature was encountered.
+   At least one invalid signature was encountered.
  Err:28 http://ftp.debian.org/debian unstable InRelease
-   At least one invalid signature was encountered.
- Hit:45 http://ftp.debian.org/debian wheezy Release  
+   At least one invalid signature was encountered.
+ Hit:45 http://ftp.debian.org/debian wheezy Release
  Err:30 http://ppa.launchpad.net/snappy-dev/image/ubuntu vivid InRelease
-   At least one invalid signature was encountered.
+   At least one invalid signature was encountered.
  Err:31 http://ftp.debian.org/debian testing InRelease
-   At least one invalid signature was encountered.
+   At least one invalid signature was encountered.
  Err:32 http://archive.canonical.com/ubuntu xenial InRelease
-   At least one invalid signature was encountered.
+   At least one invalid signature was encountered.
  Err:33 
http://ppa.launchpad.net/ci-train-ppa-service/stable-phone-overlay/ubuntu 
xenial InRelease
-   At least one invalid signature was encountered.
+   At least one invalid signature was encountered.
  Err:35 http://archive.canonical.com/ubuntu yakkety InRelease
-   At least one invalid signature was encountered.
+   At least one invalid signature was encountered.
  Err:36 http://ftp.debian.org/debian jessie-updates InRelease
-   At least one invalid signature was encountered.
+   At least one invalid signature was encountered.
  Err:37 http://archive.canonical.com/ubuntu zesty InRelease
-   At least one invalid signature was encountered.
+   At least one invalid signature was encountered.
  Err:46 http://archive.canonical.com/ubuntu precise Release.gpg
-   At least one invalid signature was encountered.
+   At least one invalid signature was encountered.
  Err:40 http://ftp.debian.org/debian wheezy-updates InRelease
-   At least one invalid signature was encountered.
+   At least one invalid signature was encountered.
  Err:47 http://archive.canonical.com/ubuntu trusty Release.gpg
-   At least one invalid signature was encountered.
+   At least one invalid signature was encountered.
  Err:48 http://ftp.debian.org/debian jessie Release.gpg
-   At least one invalid signature was encountered.
+   At least one invalid signature was encountered.
  Err:49 http://ftp.debian.org/debian wheezy Release.gpg
-   At least one invalid signature was encountered.
+   At least one invalid signature was encountered.
  Fetched 981 kB in 1s (496 kB/s)
  Reading package lists... Done
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://mirrors.kernel.org/ubuntu xenial InRelease: At least one invalid 
signature was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://mirrors.kernel.org/ubuntu xenial-updates InRelease: At least one invalid 
signature was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://mirrors.kernel.org/ubuntu xenial-security InRelease: At least one 
invalid signature was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://mirrors.kernel.org/ubuntu precise-updates InRelease: At least one 
invalid signature was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://mirrors.kernel.org/ubuntu precise-security InRelease: At least one 
invalid signature was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://mirrors.kernel.org/ubuntu precise-proposed InRelease: At least one 
invalid signature was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://mirrors.kernel.org/ubuntu trusty-updates InRelease: At least one invalid 
signature was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://mirrors.kernel.org/ubuntu trusty-security InRelease: At least one 
invalid signature was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://mirrors.kernel.org/ubuntu trusty-proposed InRelease: At least one 
invalid signature was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://security.debian.org jessie/updates InRelease: At least one invalid 
signature was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://mirrors.kernel.org/ubuntu xenial-proposed InRelease: At least one 
invalid signature was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://mirrors.kernel.org/ubuntu yakkety InRelease: At least one invalid 
signature was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://mirrors.kernel.org/ubuntu yakkety-updates InRelease: At least one 
invalid signature was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://mirrors.kernel.org/ubuntu yakkety-security InRelease: At least one 
invalid signature was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://security.debian.org wheezy/updates InRelease: At least one invalid 
signature was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://mirrors.kernel.org/ubuntu yakkety-proposed InRelease: At least one 
invalid signature was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://mirrors.kernel.org/ubuntu zesty InRelease: At least one invalid 
signature was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://mirrors.kernel.org/ubuntu zesty-updates InRelease: At least one invalid 
signature was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://mirrors.kernel.org/ubuntu zesty-security InRelease: At least one invalid 
signature was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://mirrors.kernel.org/ubuntu zesty-proposed InRelease: At least one invalid 
signature was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://mirrors.kernel.org/ubuntu precise Release: At least one invalid 
signature was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://mirrors.kernel.org/ubuntu trusty Release: At least one invalid signature 
was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://security.ubuntu.com/ubuntu xenial-security InRelease: At least one 
invalid signature was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://ppa.launchpad.net/ci-train-ppa-service/stable-phone-overlay/ubuntu vivid 
InRelease: At least one invalid signature was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://ftp.debian.org/debian unstable InRelease: At least one invalid signature 
was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://ppa.launchpad.net/snappy-dev/image/ubuntu vivid InRelease: At least one 
invalid signature was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://ftp.debian.org/debian testing InRelease: At least one invalid signature 
was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://archive.canonical.com/ubuntu xenial InRelease: At least one invalid 
signature was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://ppa.launchpad.net/ci-train-ppa-service/stable-phone-overlay/ubuntu 
xenial InRelease: At least one invalid signature was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://archive.canonical.com/ubuntu yakkety InRelease: At least one invalid 
signature was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://ftp.debian.org/debian jessie-updates InRelease: At least one invalid 
signature was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://archive.canonical.com/ubuntu zesty InRelease: At least one invalid 
signature was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://archive.canonical.com/ubuntu precise Release: At least one invalid 
signature was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://ftp.debian.org/debian wheezy-updates InRelease: At least one invalid 
signature was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://archive.canonical.com/ubuntu trusty Release: At least one invalid 
signature was encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://ftp.debian.org/debian jessie Release: At least one invalid signature was 
encountered.
  W: An error occurred during the signature verification. The repository is not 
updated and the previous index files will be used. GPG error: 
http://ftp.debian.org/debian wheezy Release: At least one invalid signature was 
encountered.
  W: Failed to fetch http://mirrors.kernel.org/ubuntu/dists/xenial/InRelease  
At least one invalid signature was encountered.
  W: Failed to fetch 
http://mirrors.kernel.org/ubuntu/dists/xenial-updates/InRelease  At least one 
invalid signature was encountered.
  W: Failed to fetch 
http://mirrors.kernel.org/ubuntu/dists/xenial-security/InRelease  At least one 
invalid signature was encountered.
  W: Failed to fetch 
http://security.ubuntu.com/ubuntu/dists/xenial-security/InRelease  At least one 
invalid signature was encountered.
  W: Failed to fetch 
http://ppa.launchpad.net/ci-train-ppa-service/stable-phone-overlay/ubuntu/dists/vivid/InRelease
  At least one invalid signature was encountered.
  W: Failed to fetch 
http://ppa.launchpad.net/snappy-dev/image/ubuntu/dists/vivid/InRelease  At 
least one invalid signature was encountered.
  W: Failed to fetch 
http://ppa.launchpad.net/ci-train-ppa-service/stable-phone-overlay/ubuntu/dists/xenial/InRelease
  At least one invalid signature was encountered.
  W: Failed to fetch 
http://mirrors.kernel.org/ubuntu/dists/precise-updates/InRelease  At least one 
invalid signature was encountered.
  W: Failed to fetch 
http://mirrors.kernel.org/ubuntu/dists/precise-security/InRelease  At least one 
invalid signature was encountered.
  W: Failed to fetch 
http://mirrors.kernel.org/ubuntu/dists/precise-proposed/InRelease  At least one 
invalid signature was encountered.
  W: Failed to fetch 
http://mirrors.kernel.org/ubuntu/dists/trusty-updates/InRelease  At least one 
invalid signature was encountered.
  W: Failed to fetch 
http://mirrors.kernel.org/ubuntu/dists/trusty-security/InRelease  At least one 
invalid signature was encountered.
  W: Failed to fetch 
http://mirrors.kernel.org/ubuntu/dists/trusty-proposed/InRelease  At least one 
invalid signature was encountered.
  W: Failed to fetch 
http://mirrors.kernel.org/ubuntu/dists/xenial-proposed/InRelease  At least one 
invalid signature was encountered.
  W: Failed to fetch http://archive.canonical.com/ubuntu/dists/xenial/InRelease 
 At least one invalid signature was encountered.
  W: Failed to fetch http://mirrors.kernel.org/ubuntu/dists/yakkety/InRelease  
At least one invalid signature was encountered.
  W: Failed to fetch 
http://mirrors.kernel.org/ubuntu/dists/yakkety-updates/InRelease  At least one 
invalid signature was encountered.
  W: Failed to fetch 
http://mirrors.kernel.org/ubuntu/dists/yakkety-security/InRelease  At least one 
invalid signature was encountered.
  W: Failed to fetch 
http://mirrors.kernel.org/ubuntu/dists/yakkety-proposed/InRelease  At least one 
invalid signature was encountered.
  W: Failed to fetch 
http://archive.canonical.com/ubuntu/dists/yakkety/InRelease  At least one 
invalid signature was encountered.
  W: Failed to fetch http://mirrors.kernel.org/ubuntu/dists/zesty/InRelease  At 
least one invalid signature was encountered.
  W: Failed to fetch 
http://mirrors.kernel.org/ubuntu/dists/zesty-updates/InRelease  At least one 
invalid signature was encountered.
  W: Failed to fetch 
http://mirrors.kernel.org/ubuntu/dists/zesty-security/InRelease  At least one 
invalid signature was encountered.
  W: Failed to fetch 
http://mirrors.kernel.org/ubuntu/dists/zesty-proposed/InRelease  At least one 
invalid signature was encountered.
  W: Failed to fetch http://archive.canonical.com/ubuntu/dists/zesty/InRelease  
At least one invalid signature was encountered.
  W: Failed to fetch http://ftp.debian.org/debian/dists/unstable/InRelease  At 
least one invalid signature was encountered.
  W: Failed to fetch http://ftp.debian.org/debian/dists/testing/InRelease  At 
least one invalid signature was encountered.
  W: Failed to fetch 
http://ftp.debian.org/debian/dists/jessie-updates/InRelease  At least one 
invalid signature was encountered.
  W: Failed to fetch http://security.debian.org/dists/jessie/updates/InRelease  
At least one invalid signature was encountered.
  W: Failed to fetch 
http://ftp.debian.org/debian/dists/wheezy-updates/InRelease  At least one 
invalid signature was encountered.
  W: Failed to fetch http://security.debian.org/dists/wheezy/updates/InRelease  
At least one invalid signature was encountered.
  W: Failed to fetch http://mirrors.kernel.org/ubuntu/dists/precise/Release.gpg 
 At least one invalid signature was encountered.
  W: Failed to fetch http://mirrors.kernel.org/ubuntu/dists/trusty/Release.gpg  
At least one invalid signature was encountered.
  W: Failed to fetch 
http://archive.canonical.com/ubuntu/dists/precise/Release.gpg  At least one 
invalid signature was encountered.
  W: Failed to fetch 
http://archive.canonical.com/ubuntu/dists/trusty/Release.gpg  At least one 
invalid signature was encountered.
  W: Failed to fetch http://ftp.debian.org/debian/dists/jessie/Release.gpg  At 
least one invalid signature was encountered.
  W: Failed to fetch http://ftp.debian.org/debian/dists/wheezy/Release.gpg  At 
least one invalid signature was encountered.
  W: Some index files failed to download. They have been ignored, or old ones 
used instead.
  Reading package lists... Done
- Building dependency tree       
+ Building dependency tree
  Reading state information... Done
  Calculating upgrade... Done
  The following packages were automatically installed and are no longer 
required:
-   linux-headers-4.4.0-21 linux-headers-4.4.0-21-generic 
linux-headers-4.4.0-22 linux-headers-4.4.0-22-generic
-   linux-headers-4.4.0-24 linux-headers-4.4.0-24-generic 
linux-headers-4.4.0-28 linux-headers-4.4.0-28-generic
-   linux-headers-4.4.0-31 linux-headers-4.4.0-31-generic 
linux-headers-4.4.0-34 linux-headers-4.4.0-34-generic
-   linux-headers-4.4.0-36 linux-headers-4.4.0-36-generic 
linux-headers-4.4.0-38 linux-headers-4.4.0-38-generic
-   linux-image-4.4.0-21-generic linux-image-4.4.0-22-generic 
linux-image-4.4.0-24-generic
-   linux-image-4.4.0-28-generic linux-image-4.4.0-31-generic 
linux-image-4.4.0-34-generic
-   linux-image-4.4.0-36-generic linux-image-4.4.0-38-generic
+   linux-headers-4.4.0-21 linux-headers-4.4.0-21-generic 
linux-headers-4.4.0-22 linux-headers-4.4.0-22-generic
+   linux-headers-4.4.0-24 linux-headers-4.4.0-24-generic 
linux-headers-4.4.0-28 linux-headers-4.4.0-28-generic
+   linux-headers-4.4.0-31 linux-headers-4.4.0-31-generic 
linux-headers-4.4.0-34 linux-headers-4.4.0-34-generic
+   linux-headers-4.4.0-36 linux-headers-4.4.0-36-generic 
linux-headers-4.4.0-38 linux-headers-4.4.0-38-generic
+   linux-image-4.4.0-21-generic linux-image-4.4.0-22-generic 
linux-image-4.4.0-24-generic
+   linux-image-4.4.0-28-generic linux-image-4.4.0-31-generic 
linux-image-4.4.0-34-generic
+   linux-image-4.4.0-36-generic linux-image-4.4.0-38-generic
  Use 'sudo apt autoremove' to remove them.
  0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
- 
  
  I'll attach the full terminal log soon.
  
  Thanks
  
  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: apt 1.2.15
  ProcVersionSignature: Ubuntu 4.4.0-45.66-generic 4.4.21
  Uname: Linux 4.4.0-45-generic x86_64
  NonfreeKernelModules: zfs zunicode zcommon znvpair zavl
  ApportVersion: 2.20.1-0ubuntu2.1
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Wed Nov 16 12:29:54 2016
  InstallationDate: Installed on 2012-10-18 (1490 days ago)
  InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 
(20120823.1)
  SourcePackage: apt
  UpgradeStatus: Upgraded to xenial on 2016-04-30 (200 days ago)

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