False positive: ansible-lint reports [ANSIBLE0002] Trailing whitespace when there are none

The problem

When running ansible-lint on a Ansible role, it reported [ANSIBLE0002] Trailing whitespace on every line in one of my task files, like shown in the example below:


(vansible23)[audun@hostname my-role]$ ansible-lint .
[ANSIBLE0002] Trailing whitespace
/home/audun/git/my-role/tasks/main.yml:1
---
[ANSIBLE0002] Trailing whitespace
/home/audun/git/my-role/tasks/main.yml:2

[ANSIBLE0002] Trailing whitespace
/home/audun/git/my-role/tasks/main.yml:3
- debug: msg="Hello World"

The investigation

I had a suspicion there might be hidden characters in the file, but before running it through a HEX editor, I tried to check it with the Linux file command:


(vansible23)[audun@hostname my-role]$ file /home/audun/git/my-role/tasks/main.yml
/home/audun/git/my-role/tasks/main.yml: ASCII text, with CRLF line terminators


As shown above, it turned out that the file had CRLF line terminators on every line, indicating that this file had been created on Windows. That was luckily easy to fix.

The solution

The dos2unix command was used to change the file to Unix format:


(vansible23)[audun@hostname my-role]$ dos2unix /home/audun/git/my-role/tasks/main.yml
dos2unix: converting file /home/audun/git/my-role/tasks/main.yml to Unix format ...


Afterwards ansible-lint reported no issues:


(vansible23)[audun@hostname my-role]$ ansible-lint .

Remote deployment failed (oracle.jdevimpl.deploy.common.Jsr88RemoteDeployer) with Oracle® JDeveloper

The problem

Using JDeveloper 12.1.3, I had created a dummy BPMN Process with just a User Task bound to a human task. For this task I had also auto-generated an input form. Deploying the task form went fine, but when trying to deploy the BPMN process I got the following error:

[08:30:27 AM] Deployment cancelled.

[08:30:27 AM] Taskflow deployment failed to deploy to server. Remote deployment failed

[08:30:27 AM] Deployment cancelled.

[08:30:27 AM] ----  Deployment incomplete  ----.

[08:30:27 AM] Remote deployment failed (oracle.jdevimpl.deploy.common.Jsr88RemoteDeployer)

The cause

After trying various things, I discovered the problem was my proxy settings in Oracle® JDeveloper.

The solution

Tools -> Preferences -> Web Browser and Proxy -> Proxy Settings, and then I set it to No Proxy. 

Now I could deploy the process without any errors. 

I assume it would also have worked if I had set it to Manual Proxy Settings, and then added my hostname to the exception list.