Version control not working, not allowing me to push

[rithvik nakirikanti]

We have multiple contributors that have access to a GitHub. For the other contributors, they are able to commit and push their changes successfully except me. This is my log when I try to push my changes to GitHub. Can someone please tell me what this means?

git -c diff.mnemonicprefix=false -c core.quotepath=false push -v --tags origin master:master
Pushing to https://github.com/NanoGurus4347/ftc_app.git
To https://github.com/NanoGurus4347/ftc_app.git
= [up to date] 15.10.06.002 -> 15.10.06.002
= [up to date] 15.11.04.001 -> 15.11.04.001
= [up to date] 16.01.04.001 -> 16.01.04.001
= [up to date] 16.02.09.001 -> 16.02.09.001
= [up to date] 16.03.30.001 -> 16.03.30.001
= [up to date] 16.07.08.001 -> 16.07.08.001
= [up to date] 16.07.08.002 -> 16.07.08.002
= [up to date] 20150918_001 -> 20150918_001
= [up to date] beta_20150803_001 -> beta_20150803_001
= [up to date] beta_20150803_002 -> beta_20150803_002
= [up to date] v1.77 -> v1.77
= [up to date] v2.2 -> v2.2
= [up to date] v2.2.1 -> v2.2.1
= [up to date] v2.35 -> v2.35
= [up to date] v2.4 -> v2.4
= [up to date] v3.0 -> v3.0
= [up to date] v3.1 -> v3.1
= [up to date] v3.1_fixed -> v3.1_fixed
= [up to date] v3.4 -> v3.4
= [up to date] v3.5 -> v3.5
= [up to date] v_15_05_15 -> v_15_05_15
= [up to date] v_15_05_15_002 -> v_15_05_15_002
= [up to date] v_15_05_15_003 -> v_15_05_15_003
= [up to date] v_15_05_15_004 -> v_15_05_15_004
= [up to date] v_15_05_15_005 -> v_15_05_15_005
= [up to date] v_15_05_15_006 -> v_15_05_15_006
= [up to date] v_15_05_15_v07 -> v_15_05_15_v07
! [rejected] master -> master (non-fast-forward)
error: failed to push some refs to 'https://github.com/NanoGurus4347/ftc_app.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.

[bgannin · Accepted solution]

Your current branch is not up to date (the remote repository on GitHub has changes you are missing.) You need to pull and incorporate those before proceeding to push your local commits.