Update circle test

Author: screamerbg

circle.yml

@@ -22,7 +22,9 @@ test:
         - cd .tests/bld-test/mbed && mbed update 85 --clean
         - cd .tests/bld-test && mbed update --clean
         - cd .tests/bld-test && mbed compile -m LPC1768 -j 0
-        - cd .tests && mbed new new-offline --offline
+        - cd .tests && mbed import https://github.com/ARMmbed/mbed-os-example-mesh-minimal offline-test
+        - cd .tests/offline-test && mbed update mbed-os-5.5.6 --offline
+        - cd .tests/offline-test && mbed update mbed-os-5.7.5 --offline
         - cd .tests && mbed new supported-tests
         - |-
             cd .tests/supported-tests

mbed/mbed.py

@@ -2174,7 +2174,7 @@ def update(rev=None, clean=False, clean_files=False, clean_deps=False, ignore=Fa
         except ProcessException as e:
             err = "Unable to update \"%s\" to %s" % (repo.name, repo.revtype(rev))
             if offline:
-                err = err + "\nThis might be caused by offline mode ('--offline' used).\nYou should try without offline mode."
+                err = err + "\nThis might be caused by offline mode ('--offline' used). You should try without offline mode."
             elif depth:
                 err = err + ("\nThis might be caused by the '--depth' option, which prevents fetching the whole revision history." % (repo.revtype(repo.rev)))
             if ignore: