Error output of ember-cli-update

ember-cli-update-output.txt

$ ember-cli-update --to "~3.4"
Cloning into bare repository '/var/folders/hg/klz90hy524v2m4prxvnnqvlw0000gn/T/tmp-29582kdN8hFA6I9KE/.git'...
Note: checking out '1bcb7a197e52ca01d1858de0346b789187a4b6c9'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by performing another checkout.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -b with the checkout command again. Example:

  git checkout -b <new-branch-name>

HEAD is now at 1bcb7a1 2.18.2
Previous HEAD position was 1bcb7a1 2.18.2
HEAD is now at 1f61253 3.4.3
Previous HEAD position was 1f61253 3.4.3
HEAD is now at 1bcb7a1 2.18.2
Previous HEAD position was 1bcb7a1 2.18.2
HEAD is now at 1f61253 3.4.3
Note: checking out 'f032036401310e8360a1ad4e512534ef62c6f0dd'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by performing another checkout.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -b with the checkout command again. Example:

  git checkout -b <new-branch-name>

HEAD is now at f032036 message
Switched to a new branch 'd2d370a0-dd4e-11e8-a03a-db89a7d1592d'
Switched to branch 'dev'
error: could not apply c0b514e58... message
hint: after resolving the conflicts, mark the corrected paths
hint: with 'git add <paths>' or 'git rm <paths>'

# in ~/Development/apps/mymsd-upgrade/src/main/client [9:52:11]
$ git status
fatal: Unable to read current working directory: No such file or directory

# in ~/Development/apps/mymsd-upgrade/src/main/client [9:52:40]
$ git mergetool
shell-init: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory
fatal: Unable to read current working directory: No such file or directory
fatal: Unable to read current working directory: No such file or directory