Improve error message when deploy protocol isn't available
----------------------------------------------------------
Key: MSITE-599
URL: https://jira.codehaus.org/browse/MSITE-599
Project: Maven 2.x and 3.x Site Plugin
Issue Type: Improvement
Components: site:deploy
Affects Versions: 3.0-beta-3, 2.3
Reporter: Herve Boutemy
actual message tells the problem but doesn't really help to fix the issue:
{noformat}[INFO] --- maven-site-plugin:3.0-SNAPSHOT:deploy (default-deploy) @
asf-pom-site ---
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3.476s
[INFO] Finished at: Sun Jul 24 23:14:10 CEST 2011
[INFO] Final Memory: 19M/342M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal
org.apache.maven.plugins:maven-site-plugin:3.0-SNAPSHOT:deploy (default-deploy)
on project asf-pom-site: Unsupported protocol: 'scp': Cannot find wagon which
supports the requested protocol: scp: java.util.NoSuchElementException
[ERROR] role: org.apache.maven.wagon.Wagon
[ERROR] roleHint: scp
[ERROR] -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e
switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please
read the following articles:
[ERROR] [Help 1]
http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException{noformat}
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