[Notes] [Git][BuildStream/buildstream][tiagogomes/issue-500] 109 commits: _exceptions.py: Modify BstError API to allow optional retry

[Tiago Gomes <gitlab mg gitlab com>]

Title: GitLab

Tiago Gomes pushed to branch tiagogomes/issue-500 at BuildStream / buildstream

Commits:

• 9ebd7fe1
  by Josh Smith at 2018-07-27T04:41:26Z

  _exceptions.py: Modify BstError API to allow optional retry
  
  job.py: Changes to the logic surrounding retry attempts and child process return codes
  element.py, source.py: ElementError and SourceError also implement this change.
  
  These exceptions now have an optional parameter of temporary which defaults to false. This will potentially break
  backwards compatibility where exceptions were previously raised and a retry was intended.
  
  To trigger a retry, one must now raise their SourceError or ElementError with temporary=True.
  
  This aims to fix #397.
  

• ca224425
  by Josh Smith at 2018-07-27T04:41:26Z

  _downloadablefilesource.py: Update network errors to be temporary
  
  This follows the change in 67ecd97a05279a3b7570ad59f05bf0a5973ef04c.
  

• 0a7cfcdf
  by Josh Smith at 2018-07-27T04:41:26Z

  tests/sources: deb, tar and zip all test for retry behaviour
  
  This is following 5d6418a06a3a0262df5f6b9e6e1a36578515fd4a where
  DownloadableFileSource was modified to raise 'temporary'
  errors when relating to file downloading.
  

• 9b2bc78f
  by Josh Smith at 2018-07-27T04:41:26Z

  cascache.py: Update cache push/pull errors to be temporary
  
  Further work needs to be done for the current grpc exceptions which are reraised.
  

• 4986527f
  by Josh Smith at 2018-07-27T04:41:26Z

  plugin.py: Extend Plugin.call() API
  
  Plugin.call() now takes fail_temporarily as an optional parameter,
  when supplied it will cause subsequent failures to trigger temporary
  errors as opposed to permanent errors.
  
  This also extends Plugin.check_output() which makes use of Plugin.call()
  

• a9a1048e
  by Josh Smith at 2018-07-27T04:41:26Z

  git.py: Update git plugin to fail temporarily on clone failures
  
  The git plugin will now make use of the fail_temporarily parameter
  to Plugin.call(), allowing failures to trigger a retry.
  

• aa071cb6
  by Tristan Van Berkom at 2018-07-27T06:13:53Z

  Merge branch 'tristan/temporary-failures' into 'master'
  
  Temorary failures
  
  Closes #397
  
  See merge request BuildStream/buildstream!574

• 4d86e7c5
  by Tristan Van Berkom at 2018-07-27T06:43:48Z

  element.py, source.py, plugin.py: Adjusting API version since annotations.
  
  Since we backported the temporary/permanent failures patch for #397
  into the `bst-1.2` branch, we need to adjust the since versions in master
  down to 1.2.
  

• fb222ba1
  by Josh Smith at 2018-07-27T08:50:45Z

  cascache.py: Raise ArtifactError on grpc error
  
  This aims to fix issue #502.
  

• 48916b8a
  by Tristan Maat at 2018-07-27T10:22:41Z

  Merge branch 'Qinusty/502' into 'master'
  
  cascache.py: Raise ArtifactError on grpc error
  
  Closes #502
  
  See merge request BuildStream/buildstream!576

• 23e080b9
  by James Ennis at 2018-07-27T11:13:50Z

  README.md: Minor corrections
  

• 196cfffc
  by James Ennis at 2018-07-27T11:13:50Z

  README.md: Direct users towards the tutorial before existing projects:
  
    This patch also removes displaying the projects that live within
    the buildstream-examples repository, as we wish to deprecate this
    repo and migrate the two examples.
    - #438 and #439
  
    In addition to this, both examples do not 'build' in their current
    state.
  

• 2b93574e
  by James Ennis at 2018-07-27T11:13:50Z

  main_install.rst: Add note to refer Windows and macOS users to docker
  

• 63e2320e
  by Josh Smith at 2018-07-27T11:16:55Z

  .gitignore: Ignore .pytest_cache/
  

• 6ea97b17
  by Javier Jardón at 2018-07-27T11:54:20Z

  Merge branch 'jennis/doc_improvements' into 'master'
  
  Refer readers to our tutorial before referring them to existing bst projects
  
  See merge request BuildStream/buildstream!578

• 8b46e874
  by Jonathan Maw at 2018-07-27T12:24:56Z

  project: Parse and store mirrors
  

• a2e9c62a
  by Jonathan Maw at 2018-07-27T12:24:56Z

  Move _ALIAS_SEPARATOR into utils
  
  The separator is useful in source files other than _project.py
  

• 7c993ac0
  by Jonathan Maw at 2018-07-27T12:24:56Z

  source: Store the url aliases or use an override
  
  This is part of a later plan to implement mirroring without forcing
  everyone to update their sources. We use the expected calls to
  Source.translate_url() when running Source.configure() to extract the
  aliases from the URL. Multiple aliases must be extracted because
  sources exist that may fetch from multiple aliases (for example, git
  submodules)
  
  Later, we want to substitute another URI where the alias normally reads
  from the project - We accomplish this by re-instantiating the Source
  with the alias overrides passed as an argument to the constructor.
  

• 2889003c
  by Jonathan Maw at 2018-07-27T12:24:56Z

  source: When fetching, try to fetch from mirrors first
  
  **KLUDGE WARNING**: This involves making the source store its "meta"
  object so that it's possible to create a copy of the source inside the
  fetch queue, instead of back when the pipeline was being loaded.
  
  This adds the SourceFetcher class, which is intended for sources that
  fetch from multiple URLs (e.g. the git source and its submodules)
  
  Fix when fetching
  

• f81e8e7b
  by Jonathan Maw at 2018-07-27T12:24:56Z

  Set default mirror via command-line or user config
  
  In user config (buildstream.conf), it is set with the "default-mirror"
  field.
  
  On the command-line, it is set with "--default-mirror"
  

• 755ed898
  by Jonathan Maw at 2018-07-27T12:24:56Z

  Add mirrored source tracking
  

• 19c01a56
  by Jonathan Maw at 2018-07-27T12:24:56Z

  bzr.py: Improve mirror support
  
  This fixes:
  * Bzr repositories pulling from the branch they were created with.
  * Bzr's _ensure_mirror() not actually checking that it successfully
    mirrored the ref.
  

• 84872141
  by Jonathan Maw at 2018-07-27T12:24:56Z

  git.py: Improve mirror support
  
  When implementing fetching from mirrors, I encountered some problems
  with the git source:
  
  1. The mirror URL was using translate_url()'s output, so if a different
     alias was used, then fetching from the mirror would go to a different
     directory, and be inaccessible.
  2. After fixing that, fetching was unable to pull from a URL other than
     the one used at repository creation, meaning it wouldn't actually
     pull from the mirror.
  

• bd51a0b2
  by Jonathan Maw at 2018-07-27T12:24:56Z

  testutils: Add a helper to copy a testutils repo
  
  This is helpful if you want to test what happens when you have one repo
  that has diverged from another. By copying the repo you're sure they
  start with shared history.
  
  This is especially useful when mirroring.
  

• 909120ab
  by Jonathan Maw at 2018-07-27T12:24:56Z

  tests: Add mirrored fetching and tracking tests
  

• 1cbc2e17
  by Jonathan Maw at 2018-07-27T12:24:56Z

  doc: Add documentation for source mirroring
  

• 202d9d26
  by Jonathan Maw at 2018-07-27T12:24:56Z

  NEWS: Add item for source mirroring
  

• 2b23898d
  by Jonathan Maw at 2018-07-27T12:24:56Z

  doc: Add tutorials for setting up git and tar mirrors
  

• bd4d0355
  by Jonathan Maw at 2018-07-27T13:08:00Z

  Merge branch '328-support-for-downloading-sources-from-mirrors' into 'master'
  
  Resolve "Support for downloading sources from mirrors"
  
  Closes #328
  
  See merge request BuildStream/buildstream!404

• cb4693b2
  by Josh Smith at 2018-07-27T14:00:26Z

  Merge branch 'Qinusty/pytest_cache_gitignore'
  

• 8a96679a
  by Josh Smith at 2018-07-27T14:01:07Z

  Merge branch 'master' of gitlab.com:BuildStream/buildstream
  

• f5c8ff61
  by Josh Smith at 2018-07-27T14:10:45Z

  _context.py: Cache size is now restricted to available disk space
  
  This address issue #491.
  
  When attempting to run buildstream with a configuration specifying
  a cache quota larger than your available disk space, buildstream
  will alert the user and exit.
  
  Note:
  This takes into consideration your current cache usage and
  therefore restricts the overall size of your artifact cache folder.
  

• 32ddb544
  by Qinusty at 2018-07-27T14:57:30Z

  Merge branch 'Qinusty/491' into 'master'
  
  Cache quota is now restricted to available disk space
  
  See merge request BuildStream/buildstream!563

• cb8c99e5
  by Tristan Maat at 2018-07-29T07:52:06Z

  buildelement.py: Only display one activity message (#507)
  

• 08b7562b
  by Tristan Van Berkom at 2018-07-29T10:23:43Z

  Merge branch '507-some-log-lines-appear-to-be-duplicates' into 'master'
  
  Resolve "Some log lines appear to be duplicates"
  
  Closes #507
  
  See merge request BuildStream/buildstream!573

• 3b7158b3
  by Tristan Van Berkom at 2018-07-29T10:25:02Z

  source.py: Bring down since version for source mirroring APIs
  
  Since we have now backported this to `bst-1.2`, the APIs have
  been introduced in 1.2 and not 1.4
  

• e84f8b24
  by Tristan Van Berkom at 2018-07-29T10:25:02Z

  NEWS: Bring down since version of backported features to 1.1.5
  
  These features will be released in 1.1.5 since they have been
  backported, lets reflect this in the NEWS file in master.
  
  Also this adds the backported `remote` plugin to the NEWS
  

• df18d38c
  by Tristan Van Berkom at 2018-07-29T10:26:08Z

  git.py: Handle concurrent download completions properly
  
  Use os.rename() to rename the cloned temporary repository into
  place in the source cache, and issue a STATUS message when discarding
  a duplicate clone, in the case where the same repository is cloned
  twice in parallel.
  
  The problem with using shutil.move() is that it will create the source
  directory in a subdirectory of the destination when the destination
  exists, so it's behavior depends on whether the destination exists.
  
  This shutil.move() behavior has so far hidden the race condition
  where a duplicate repo is created in a subdirectory, as you need
  to have three concurrent downloads of the same repo in order to
  trigger the error.
  
  This fixes issue #503
  

• 92714b03
  by Tristan Van Berkom at 2018-07-29T11:18:52Z

  Merge branch 'tristan/fix-spurious-errors' into 'master'
  
  git.py: Handle concurrent download completions properly
  
  Closes #503
  
  See merge request BuildStream/buildstream!583

• 8568d272
  by Phil Dawson at 2018-07-30T07:58:07Z

  examples: add project demonstrating a junction element
  
  This is part of the work towards #437.
  

• efa24e7e
  by Phil Dawson at 2018-07-30T07:58:07Z

  junctions.run: Add terminal session output for junctions walkthrough.
  
  This is part of the work towards #437.
  

• bf175bf7
  by Phil Dawson at 2018-07-30T07:58:07Z

  junction-elements.rst: Add junctions walkthrough
  
  This is part of the work towards #437.
  

• e8931048
  by James Ennis at 2018-07-30T07:58:07Z

  using_advanced_features.rst: Added file
  

• b4f25190
  by Phil Dawson at 2018-07-30T07:58:07Z

  tests/examples/junctions.py: Add tests for junctions walkthrough
  
  This is part of the work towards issue #437.
  

• aff76ae9
  by Phil Dawson at 2018-07-30T09:15:49Z

  Merge branch 'phil/437-junction-tutorial' into 'master'
  
  Phil/437 junction tutorial
  
  See merge request BuildStream/buildstream!550

• c313ad17
  by Tom Pollard at 2018-07-30T10:57:49Z

  widget.py: Limit failure summary to currently failing elements
  
  Change widget.py print_summary() to only print the failure
  messages of elements in the Failure Summary that failed on the
  current try.
  

• 4a3def5c
  by Tristan Maat at 2018-07-30T11:47:21Z

  Merge branch 'tpollard/386' into 'master'
  
  widget.py: Limit failure summary to currently failing elements
  
  See merge request BuildStream/buildstream!561

• 34015a26
  by Tristan Maat at 2018-07-30T12:19:45Z

  HACKING.rst: Add note about asking for dev permissions
  

• ae47a72b
  by Tristan Van Berkom at 2018-07-30T13:11:34Z

  Merge branch 'tlater/ask-for-dev-permissions' into 'master'
  
  HACKING.rst: Add note about asking for dev permissions
  
  See merge request BuildStream/buildstream!587

• 695c0cb0
  by Phil Dawson at 2018-07-30T16:07:36Z

  junction-elements.rst: Add missing language specifier to literalinclude
  
  A missing language specifier on a literal include directive results in yaml
  being rendered as python code. This commit adds the :language: tag to that
  directive.
  

• fcb87b0a
  by Phil Dawson at 2018-07-30T16:53:37Z

  Merge branch 'phil/fixup-junctions-tutorial' into 'master'
  
  junction-elements.rst: Add missing language specifier to literalinclude
  
  See merge request BuildStream/buildstream!591

• 3d308894
  by Richard Maw at 2018-07-31T16:31:36Z

  element.py: Cache the result of checking whether an artifact is cached weakly
  
  Normally we'd only need it in the case of scheduling a weakly cached build,
  but to allow caching of failed builds we need to be able to distinguish
  between cached successes and cached failures
  for both strong and weak cache keys.
  
  To allow other cache lookup codepaths to look up via the weak key
  requires changes through the call stack to consult which key to use,
  and cache invalidation of the saved state when it changes.
  

• b3a68e28
  by Richard Maw at 2018-07-31T16:31:36Z

  element.py: Add metadata to distinguish between successful and failed builds
  
  This just puts the metadata in place,
  we're adding code paths to add failed builds later.
  

• f4573df3
  by Richard Maw at 2018-07-31T16:31:36Z

  Convert call-sites of Element._cached() that assume success
  
  When we later add cached failures it needs to not treat them as successes.
  

• 553df108
  by Richard Maw at 2018-07-31T16:31:36Z

  _frontend/widget.py: Render cached failures differently to successes
  

• d14d8ee2
  by Richard Maw at 2018-07-31T16:32:35Z

  Cache failed builds
  
  This creates an artifact when element assembly fails too,
  and if it's the right kind of exception uses the now-included install directory
  similarly to if it had returned successfully.
  
  If there's a failure during install the artifact contains any installed files,
  but may contain nothing at all.
  

• d83122bb
  by Richard Maw at 2018-07-31T16:32:35Z

  _scheduler/queues/buildqueue.py: Skip rebuilding cached failures
  
  This flags up a failure and if run in an interactive prompt
  permits the user to attempt a rebuild.
  

• 78944e9a
  by Richard Maw at 2018-07-31T16:32:35Z

  tests: Add tests for cached behaviours
  

• 3fa79d8d
  by Richard Maw at 2018-07-31T16:32:35Z

  _scheduler/queues: Add failed builds to "done" queue
  
  This allows the scheduler to move jobs from the current queue to the next.
  
  As a result of this change later queues than the build queue
  mustn't skip a cached failure, so the logic is specialised to build queues only.
  

• e8cd43dc
  by Richard Maw at 2018-07-31T16:32:58Z

  NEWS: Describe caching of failures
  
  Closes #76.
  

• 88cd61ea
  by knownexus at 2018-07-31T16:32:58Z

  Added the missing `_get_build_log` function
  

• 4fc1f5d1
  by Phillip Smyth at 2018-07-31T17:17:34Z

  Merge branch 'richardmaw/cache-fail' into 'master'
  
  Store failed builds in the cache
  
  Closes #76
  
  See merge request BuildStream/buildstream!475

• 6cd3df09
  by Phil Dawson at 2018-08-01T08:05:45Z

  doc/sessions: Add terminal sessions for use in workspaces tutorial
  
  This is part of the the work towards issue #437
  

• 8c0522ad
  by Phil Dawson at 2018-08-01T08:05:45Z

  Add project for workspaces tutorial
  
  This is part of the work towards issue #437
  

• dc60b713
  by Phil Dawson at 2018-08-01T08:05:45Z

  tutorials: Add workspaces tutorial
  
  This is part of the work towards issue #437
  

• bf8c3dfb
  by Phil Dawson at 2018-08-01T08:05:45Z

  testutils/patch.py: Add methods for applying and removing patches
  

• b69783d4
  by Phil Dawson at 2018-08-01T08:05:45Z

  tests/examples/developing.py: Add tests for workspaces walkthrough
  

• 480565c2
  by Phil Dawson at 2018-08-01T09:04:26Z

  Merge branch 'phil/437-workspaces-tutorial' into 'master'
  
  Phil/437 workspaces tutorial
  
  Closes #437
  
  See merge request BuildStream/buildstream!519

• 87edf67e
  by Martin Blanchard at 2018-08-01T11:07:05Z

  complete.py: Ensure paths get completed from 'element-path'
  
  Element paths should always be completed from the root element folder
  defined by the element-path key in project.conf. Fix complete_path() to
  always search into its given base_directory argument.
  
  See issue BuildStream/buildstream#448
  

• d10e4668
  by Phillip Smyth at 2018-08-01T12:05:40Z

  Merge branch 'mablanch/448-autocompletion-broken-defaults' into 'master'
  
  Fix autocompletion for elements in sub-folders
  
  See merge request BuildStream/buildstream!592

• 6aedc57b
  by Jim MacArthur at 2018-08-01T12:07:32Z

  Add BST_VIRTUAL_DIRECTORY flag for element plugins
  

• 1d3af84d
  by Jim MacArthur at 2018-08-01T12:07:32Z

  utils.py: add getmtime() and magic_timestamp
  
  magic_timestamp is moved into file scope so other classes
  can use it.
  

• 4397e45a
  by Jim MacArthur at 2018-08-01T12:07:32Z

  Sandbox.py: Rename __root to _root.
  
  This is to allow to allow its use by subclasses.
  
  Since access to get_directories is now blocked for some plugins,
  and the subclasses of Sandbox do not have configuration defined
  by YAML files, they need another way to get at the root directory.
  

• 9bf343cf
  by Jim MacArthur at 2018-08-01T12:07:32Z

  Add the virtual directory class 'Directory' and one implementation.
  
  buildstream/storage/Directory.py: New file.
  buildstream/storage/_filebaseddirectory.py: New file.
  buildstream/_exceptions.py: New VIRTUAL_FS exception source.
  

• f124dfec
  by Jim MacArthur at 2018-08-01T12:07:32Z

  storage: Add __init__.py
  

• 42bdce0b
  by Jim MacArthur at 2018-08-01T12:07:32Z

  sandbox.py: Add function to get virtual directory.
  

• fe1a3428
  by Jim MacArthur at 2018-08-01T12:07:33Z

  _stream.py: Convert to virtual directories.
  
  This removes _add_directory_to_tarfile since it is now implemented in
  _filebaseddirectory.py.
  

• 849724ce
  by Jim MacArthur at 2018-08-01T12:07:33Z

  element.py: Conversion to use virtual directories
  

• 270325b4
  by Jim MacArthur at 2018-08-01T12:07:33Z

  plugins/elements/compose.py: Convert to virtual directories
  

• a8c71ba4
  by Jim MacArthur at 2018-08-01T12:07:33Z

  plugins/elements/import.py: Convert to virtual directories
  

• 4e6a9049
  by Jim MacArthur at 2018-08-01T12:07:33Z

  sandbox: Remove instances of get_directory
  
  sandbox/_mount.py, sandbox/_sandboxbwrap.py:
    Remove instances of get_directory
  

• e69f2b23
  by Jim MacArthur at 2018-08-01T12:07:33Z

  plugins/elements/stack.py: Convert to virtual directories
  

• 6877b6fc
  by Jim MacArthur at 2018-08-01T12:07:33Z

  scriptelement.py: Convert to virtual directories
  

• 8edf1f80
  by Jim MacArthur at 2018-08-01T12:07:33Z

  compose.py: Remove unused getmtime()
  

• 02c6c846
  by Jim MacArthur at 2018-08-01T12:07:33Z

  sandbox.py: Use _root in _has_command
  
  This will need more attention when we bring in another virtual
  directory backend, however, we've said it is acceptable for the
  sandbox itself to access the underlying directory, and this is
  the best fix in the meantime.
  

• eabc3899
  by Jim MacArthur at 2018-08-01T13:16:04Z

  Merge branch 'jmac/virtual_directories' into 'master'
  
  Abstract directory class and filesystem-backed implementation
  
  See merge request BuildStream/buildstream!445

• 60ddb193
  by Josh Smith at 2018-08-01T14:17:17Z

  message.py: MessagesType.SKIPPED added
  

• 0756c615
  by Josh Smith at 2018-08-01T14:17:17Z

  cascache.py: Display SKIPPED message for each remote skipped
  

• 62a250fe
  by Qinusty at 2018-08-01T15:01:25Z

  Merge branch 'Qinusty/481' into 'master'
  
  Add SKIPPED message type for actions being skipped
  
  See merge request BuildStream/buildstream!562

• 00ddcbd7
  by Martin Blanchard at 2018-08-01T15:16:33Z

  element.py: Raise an exception on unbuilt element checkout
  
  Trying to checkout an element that has no cached artifacts should be and
  handled failure. See BuildStream/buildstream#447.
  

• 4c739e2a
  by Martin Blanchard at 2018-08-01T15:16:33Z

  _stream.py: Print details on checkout failure
  

• 4a4fed7a
  by Qinusty at 2018-08-01T16:14:50Z

  Merge branch 'mablanch/447-stack-trace-checkout' into 'master'
  
  Handle checkout failure for unbuilt elements
  
  See merge request BuildStream/buildstream!590

• 547d20b2
  by Phil Dawson at 2018-08-01T16:31:08Z

  install_linux_distro.rst: Add install instructons for Ubuntu
  
  This commit is part of the work required to resolve issue #436
  

• 592c9061
  by Javier Jardón at 2018-08-01T17:28:05Z

  Merge branch 'phil/436-add-ubuntu-install-intructions' into 'master'
  
  Add Ubuntu install intructions
  
  Closes #436
  
  See merge request BuildStream/buildstream!525

• 4d2e8a14
  by Josh Smith at 2018-08-02T09:12:16Z

  HACKING.rst: Add running a single test example
  

• 039d43e4
  by Tom Pollard at 2018-08-02T10:02:08Z

  Merge branch 'Qinusty/docs_changes' into 'master'
  
  HACKING.rst: Add running a single test example
  
  See merge request BuildStream/buildstream!597

• e788bda4
  by Tiago Gomes at 2018-08-02T11:24:43Z

  plugin: bake API to get and validate a project path
  
  A project path is a path relative to a project directory.
  
  A project path can not also refer to the parent directory in the first
  path component, or point to symbolic links, fifos, sockets and
  block/character devices.
  

• 33292be4
  by Tiago Gomes at 2018-08-02T11:24:43Z

  local plugin: validate project paths
  
  The autotools example had to be copied over inside of the junction
  example, as referring to a path outside of the project directory is
  now disallowed.
  

• 00f170b8
  by Tiago Gomes at 2018-08-02T11:24:43Z

  patch plugin: validate project paths
  

• 4f0f4171
  by Tiago Gomes at 2018-08-02T11:24:43Z

  ostree plugin: validate project paths
  

• c4c0bb1e
  by Tiago Gomes at 2018-08-02T11:24:43Z

  project: validate project paths (element-path)
  

• 385aa592
  by Tiago Gomes at 2018-08-02T11:24:43Z

  project: validate project paths (local plugin paths)
  

• 731328ad
  by Tiago Gomes at 2018-08-02T11:24:43Z

  tests: add generate_file_types testing function
  

• b7362a32
  by Tiago Gomes at 2018-08-02T11:24:43Z

  tests: add additional tests to local plugin
  

• 7e3944dc
  by Tiago Gomes at 2018-08-02T11:24:43Z

  tests: add additional tests to patch plugin
  

• 9f0c8fcf
  by Tiago Gomes at 2018-08-02T11:24:43Z

  tests: test local plugins and element-path paths
  

• 8656a65d
  by Tiago Gomes at 2018-08-02T12:10:29Z

  Merge branch 'tiagogomes/issue-195' into 'master'
  
  Add validation for project paths
  
  See merge request BuildStream/buildstream!593

• d2937122
  by Tiago Gomes at 2018-08-02T16:54:15Z

  element: move build tree instead of copying it
  
  The build tree won't be necessary any longer so it can be just moved.
  

• 7480b378
  by Tiago Gomes at 2018-08-02T16:54:49Z

  cas: ignore files of type socket
  
  These files are automatically generated on the bind() syscall and thus
  can be safely ignored.
  
  This fixes caching the build tree of projects that create a socket as
  part of their tests.
  
  Closes #500.
  

30 changed files:

• .gitignore
• .pylintrc
• HACKING.rst
• NEWS
• README.rst
• buildstream/__init__.py
• buildstream/_artifactcache/cascache.py
• buildstream/_context.py
• buildstream/_exceptions.py
• buildstream/_frontend/app.py
• buildstream/_frontend/cli.py
• buildstream/_frontend/complete.py
• buildstream/_frontend/widget.py
• buildstream/_loader/loader.py
• buildstream/_message.py
• buildstream/_pipeline.py
• buildstream/_project.py
• buildstream/_scheduler/jobs/job.py
• buildstream/_scheduler/queues/buildqueue.py
• buildstream/_scheduler/queues/queue.py
• buildstream/_stream.py
• buildstream/_versions.py
• buildstream/_yaml.py
• buildstream/buildelement.py
• buildstream/element.py
• buildstream/plugin.py
• buildstream/plugins/elements/compose.py
• buildstream/plugins/elements/import.py
• buildstream/plugins/elements/stack.py
• buildstream/plugins/sources/_downloadablefilesource.py

The diff was not included because it is too large.

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