[ee4j-build] git question

[Bill Shannon <bill.shannon@xxxxxxxxxx>]

Any git experts out there?  I've asked a few people locally but no one has
really been able to explain this to me.

What am I doing wrong here?

javaxmail@datsunx$ git tag -a 1.6.3
javaxmail@datsunx$ git push origin 1.6.3
Counting objects: 1, done.
Writing objects: 100% (1/1), 178 bytes | 178.00 KiB/s, done.
Total 1 (delta 0), reused 0 (delta 0)
To github.com:eclipse-ee4j/javamail.git
 * [new tag]         1.6.3 -> 1.6.3
javaxmail@datsunx$ git checkout master
Switched to branch 'master'
Your branch is behind 'origin/master' by 1 commit, and can be fast-forwarded.
  (use "git pull" to update your local branch)
javaxmail@datsunx$ git pull -r
Updating beab926..8388a02
Fast-forward
 mailapijar/pom.xml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
Current branch master is up to date.
javaxmail@datsunx$ git rebase EE4J_8
First, rewinding head to replay your work on top of it...
javaxmail@datsunx$ git push
To github.com:eclipse-ee4j/javamail.git
 ! [rejected]        master -> master (non-fast-forward)
error: failed to push some refs to 'git@xxxxxxxxxx:eclipse-ee4j/javamail.git'
hint: Updates were rejected because the tip of your current branch is behind
hint: its remote counterpart. Integrate the remote changes (e.g.
hint: 'git pull ...') before pushing again.
hint: See the 'Note about fast-forwards' in 'git push --help' for details.

I don't understand why the git push is failing.

I updated the master branch, then rebased the EE4J_8 branch on top of it.
Shouldn't it be ready to push at that point?

$ git pull -r
First, rewinding head to replay your work on top of it...
Applying: https://github.com/eclipse-ee4j/javamail/issues/336 release job
Applying: Update to newest parent pom. (#341)
Applying: Switch to jakarta coordinates.
Applying: Update parent pom version and update JAF version.
Applying: Update documentation for the move to Eclipse - fix #348
Applying: JavaMail 1.6.3 Final Release.
Applying: Update dependency javax.mail -> jakarta.mail.
Applying: Change Java platform module system name to jakarta.mail.
Applying: Don't include a version in the OSGi javax.activation dependency

What was in the remote master that wasn't pulled the first time?