fix a docstring typo

Builder.substituted doesn't change the builder in place, contrary to
what the docstring suggested.
25 jobs for stable in 41 minutes and 22 seconds (queued for 8 seconds)
latest
Status Job ID Name Coverage
  Build Env
manual #147498
allowed to fail manual
build-env:conda
manual #147496
allowed to fail manual
build-env:debian
manual #147499
allowed to fail manual
build-env:default
manual #147494
allowed to fail manual
build-env:ubuntu
 
  Build
passed #147512
build:bleeding-edge

00:04:37

passed #147503
build:debian

00:04:17

passed #147510
build:latest

00:04:06

passed #147508
build:no-extras

00:02:25

passed #147506
build:stable

00:02:24

passed #147501
build:ubuntu

00:04:35

 
  Test
passed #147532
build PDF documentation

00:05:22

passed #147530
build documentation

00:03:55

passed #147534
check for broken links in doc

00:01:07

passed #147517
check for dependencies installed

00:00:40

passed #147514
check whitespace style

00:00:41

failed #147528
allowed to fail
test:bleeding-edge

00:32:46

failed #147524
test:debian

00:32:19

failed #147526
test:latest

00:30:46

failed #147520
test:no-extras

00:36:41

failed #147518
test:stable

00:35:52

failed #147522
test:ubuntu

00:28:51

 
  Deploy
skipped #147539
allowed to fail manual
remove_coverage
skipped #147542
allowed to fail manual
remove_docs
skipped #147536
upload coverage
skipped #147540
upload documentation to the test server
 
Name Stage Failure
failed
test:no-extras Test
53.24s call     kwant/physics/tests/test_gauge.py::test_minimal_cycle_basis[3-honeycomb-circle]
35.41s call kwant/physics/tests/test_gauge.py::test_phases[cubic-finite-3]
22.34s call kwant/physics/tests/test_gauge.py::test_phases[cubic-finite-2]
====== 1 failed, 289 passed, 26 skipped, 3 warnings in 2171.76s (0:36:11) ======
Authenticating with credentials from /root/.docker/config.json
Uploading artifacts...
tests.xml: found 1 matching files

Uploading artifacts to coordinator... ok
id=147520 responseStatus=201 Created token=2cupHyD4
ERROR: Job failed: exit code 1
failed
test:stable Test
51.93s call     kwant/physics/tests/test_gauge.py::test_minimal_cycle_basis[3-honeycomb-circle]
34.40s call kwant/physics/tests/test_gauge.py::test_phases[cubic-finite-3]
23.44s call kwant/physics/tests/test_gauge.py::test_phases[cubic-finite-2]
=========== 1 failed, 431 passed, 15 warnings in 2119.36s (0:35:19) ============
Authenticating with credentials from /root/.docker/config.json
Uploading artifacts...
tests.xml: found 1 matching files

Uploading artifacts to coordinator... ok
id=147518 responseStatus=201 Created token=pKDDNV3J
ERROR: Job failed: exit code 1
failed
test:bleeding-edge Test
18.92s call     kwant/physics/tests/test_gauge.py::test_phases[cubic-finite-2]
========== 1 failed, 431 passed, 5968 warnings in 1802.34s (0:30:02) ===========
/usr/local/envs/kwant-latest/lib/python3.8/site-packages/pep8.py:110: FutureWarning: Possible nested set at position 1
EXTRANEOUS_WHITESPACE_REGEX = re.compile(r'[[({] | []}),;:]')
Authenticating with credentials from /root/.docker/config.json
Uploading artifacts...
tests.xml: found 1 matching files

Uploading artifacts to coordinator... ok
id=147528 responseStatus=201 Created token=Fdby6yfJ
ERROR: Job failed: exit code 1
failed
test:debian Test
47.16s call     kwant/physics/tests/test_gauge.py::test_minimal_cycle_basis[3-honeycomb-circle]
31.06s call kwant/physics/tests/test_gauge.py::test_phases[cubic-finite-3]
20.94s call kwant/physics/tests/test_gauge.py::test_phases[cubic-finite-2]
=========== 1 failed, 431 passed, 16 warnings in 1905.85s (0:31:45) ============
Authenticating with credentials from /root/.docker/config.json
Uploading artifacts...
tests.xml: found 1 matching files

Uploading artifacts to coordinator... ok
id=147524 responseStatus=201 Created token=ULmMV_zB
ERROR: Job failed: exit code 1
failed
test:latest Test
44.02s call     kwant/physics/tests/test_gauge.py::test_minimal_cycle_basis[3-honeycomb-circle]
30.76s call kwant/physics/tests/test_gauge.py::test_phases[cubic-finite-3]
20.72s call kwant/physics/tests/test_gauge.py::test_phases[cubic-finite-2]
========== 1 failed, 431 passed, 5968 warnings in 1811.87s (0:30:11) ===========
Authenticating with credentials from /root/.docker/config.json
Uploading artifacts...
tests.xml: found 1 matching files

Uploading artifacts to coordinator... ok
id=147526 responseStatus=201 Created token=Hz2h3v46
ERROR: Job failed: exit code 1
failed
test:ubuntu Test
41.00s call     kwant/physics/tests/test_gauge.py::test_minimal_cycle_basis[3-honeycomb-circle]
30.09s call kwant/physics/tests/test_gauge.py::test_phases[cubic-finite-3]
17.93s call kwant/physics/tests/test_gauge.py::test_phases[cubic-finite-2]
========== 1 failed, 431 passed, 1325 warnings in 1697.39s (0:28:17) ===========
Authenticating with credentials from /root/.docker/config.json
Uploading artifacts...
tests.xml: found 1 matching files

Uploading artifacts to coordinator... ok
id=147522 responseStatus=201 Created token=2vp6Lyu7
ERROR: Job failed: exit code 1