Attempting to run through the Go tutorial on OSX results in the following when running `snapcraft` the first time: ``` Launching a VM. Launched: snapcraft-test-httplab-dobs 2019-12-16T15:57:59Z INFO Waiting for restart... snapd 2.42.5 from Canonical✓ installed core18 20191126 from Canonical✓ installed snapcraft 3.8 from Canonical✓ installed Ign:1 http://security.ubuntu.com/ubuntu bionic-security InRelease Ign:2 http://archive.ubuntu.com/ubuntu bionic InRelease Ign:3 http://archive.ubuntu.com/ubuntu bionic-updates InRelease Err:4 http://security.ubuntu.com/ubuntu bionic-security Release 404 Not Found [IP: 91.189.91.14 80] Ign:5 http://archive.ubuntu.com/ubuntu bionic-backports InRelease Err:6 http://archive.ubuntu.com/ubuntu bionic Release 404 Not Found [IP: 91.189.88.24 80] Err:7 http://archive.ubuntu.com/ubuntu bionic-updates Release 404 Not Found [IP: 91.189.88.24 80] Err:8 http://archive.ubuntu.com/ubuntu bionic-backports Release 404 Not Found [IP: 91.189.88.24 80] Reading package lists... Done E: The repository 'http://security.ubuntu.com/ubuntu bionic-security Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://archive.ubuntu.com/ubuntu bionic Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://archive.ubuntu.com/ubuntu bionic-updates Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://archive.ubuntu.com/ubuntu bionic-backports Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. Failed to update the package cache: Some files could not be downloaded: failed to run apt update Check that the sources on your host are configured correctly. An error occurred when trying to execute 'sudo -i env SNAPCRAFT_HAS_TTY=True snapcraft refresh' with 'multipass': returned exit code 2. ``` On subsequent runs: ``` Launching a VM. snap "snapd" has no updates available snap "core18" has no updates available snap "snapcraft" has no updates available mount failed: Error enabling mount support in 'snapcraft-test-httplab-dobs' An error occurred with the instance when trying to mount with 'multipass': returned exit code 2. Ensure that 'multipass' is setup correctly and try again. ``` I've confirmed that multipass is running, though unclear how to confirm that it's set up "correctly." Based on others' incidents I attempted to run `snapcraft clean`, the result was the following: ``` Sorry, an error occurred in Snapcraft: module 'os' has no attribute 'sched_getaffinity' Traceback (most recent call last): File "/usr/local/bin/snapcraft", line 8, in <module> sys.exit(run()) File "/usr/local/Cellar/snapcraft/3.9/libexec/lib/python3.7/site-packages/click/core.py", line 764, in __call__ return self.main(*args, **kwargs) File "/usr/local/Cellar/snapcraft/3.9/libexec/lib/python3.7/site-packages/click/core.py", line 717, in main rv = self.invoke(ctx) File "/usr/local/Cellar/snapcraft/3.9/libexec/lib/python3.7/site-packages/click/core.py", line 1137, in invoke return _process_result(sub_ctx.command.invoke(sub_ctx)) File "/usr/local/Cellar/snapcraft/3.9/libexec/lib/python3.7/site-packages/snapcraft/cli/_command.py", line 87, in invoke return super().invoke(ctx) File "/usr/local/Cellar/snapcraft/3.9/libexec/lib/python3.7/site-packages/click/core.py", line 956, in invoke return ctx.invoke(self.callback, **ctx.params) File "/usr/local/Cellar/snapcraft/3.9/libexec/lib/python3.7/site-packages/click/core.py", line 555, in invoke return callback(*args, **kwargs) File "/usr/local/Cellar/snapcraft/3.9/libexec/lib/python3.7/site-packages/click/decorators.py", line 17, in new_func return f(get_current_context(), *args, **kwargs) File "/usr/local/Cellar/snapcraft/3.9/libexec/lib/python3.7/site-packages/snapcraft/cli/lifecycle.py", line 338, in clean lifecycle.clean(project, parts, steps.PRIME) File "/usr/local/Cellar/snapcraft/3.9/libexec/lib/python3.7/site-packages/snapcraft/internal/lifecycle/_clean.py", line 198, in clean config = project_loader.load_config(project) File "/usr/local/Cellar/snapcraft/3.9/libexec/lib/python3.7/site-packages/snapcraft/internal/project_loader/__init__.py", line 47, in load_config return Config(project) File "/usr/local/Cellar/snapcraft/3.9/libexec/lib/python3.7/site-packages/snapcraft/internal/project_loader/_config.py", line 212, in __init__ self.data = self._expand_env(snapcraft_yaml) File "/usr/local/Cellar/snapcraft/3.9/libexec/lib/python3.7/site-packages/snapcraft/internal/project_loader/_config.py", line 335, in _expand_env snapcraft_global_environment(self.project) File "/usr/local/Cellar/snapcraft/3.9/libexec/lib/python3.7/site-packages/snapcraft/internal/project_loader/_env.py", line 110, in snapcraft_global_environment "SNAPCRAFT_PARALLEL_BUILD_COUNT": str(project.parallel_build_count), File "/usr/local/Cellar/snapcraft/3.9/libexec/lib/python3.7/site-packages/snapcraft/project/_project_options.py", line 135, in parallel_build_count return len(os.sched_getaffinity(0)) AttributeError: module 'os' has no attribute 'sched_getaffinity' We would appreciate it if you created a bug report at https://launchpad.net/snapcraft/+filebug with the above text included. You can find the traceback in file '/var/folders/8t/bcy9yfg90c56_4m_36wmtyrm0000gp/T/tmp4o1p110g/trace.txt'. ``` Which led me here.