$ bzr bd -S -- -krobert.park@canonical.com
Building using working tree
Building package in merge mode
Looking for a way to retrieve the upstream tarball
Using the upstream tarball that is present in /home/robru/ubuntu/scratch
bzr: ERROR: An error (1) occurred running quilt: None

Applying patch /home/robru/ubuntu/scratch/build-area/qtpurchasing-opensource-src-5.6.0~git20151002.2d04db2e/debian/patches/ubuntu_libpay_backend.diff
can't find file to patch at input line 5
Perhaps you used the wrong -p or --strip option?
The text leading up to this was:
--------------------------
|diff --git a/.gitignore b/.gitignore
|index 4a5200a..a34a6af 100644
|--- a/.gitignore
|+++ b/.gitignore
--------------------------
No file to patch.  Skipping patch.
1 out of 1 hunk ignored
patching file src/purchasing/doc/qtpurchasing.qdocconf
Hunk #1 FAILED at 6.
1 out of 1 hunk FAILED -- rejects in file src/purchasing/doc/qtpurchasing.qdocconf
patching file src/purchasing/inapppurchase/inapppurchase.pri
patching file src/purchasing/inapppurchase/qinapppurchasebackendfactory.cpp
patching file src/purchasing/inapppurchase/qinappstore.cpp
patching file src/purchasing/inapppurchase/ubuntu/qubuntuinappproduct.cpp
patching file src/purchasing/inapppurchase/ubuntu/qubuntuinappproduct_p.h
patching file src/purchasing/inapppurchase/ubuntu/qubuntuinapppurchasebackend.cpp
patching file src/purchasing/inapppurchase/ubuntu/qubuntuinapppurchasebackend_p.h
patching file src/purchasing/inapppurchase/ubuntu/qubuntuinapptransaction.cpp
patching file src/purchasing/inapppurchase/ubuntu/qubuntuinapptransaction_p.h
patching file src/purchasing/inapppurchase/ubuntu/ubuntu.pri
patching file tests/auto/purchasing/purchasing.pro
patching file tests/auto/purchasing/qinappstore/tst_qinappstore.cpp
patching file tests/auto/purchasing/ubuntu/store_mock.cpp
patching file tests/auto/purchasing/ubuntu/store_mock.h
patching file tests/auto/purchasing/ubuntu/tst_qinappstore_ubuntu.cpp
patching file tests/auto/purchasing/ubuntu/ubuntu.pro
Patch /home/robru/ubuntu/scratch/build-area/qtpurchasing-opensource-src-5.6.0~git20151002.2d04db2e/debian/patches/ubuntu_libpay_backend.diff does not apply (enforce with -f)