36899
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Ran 17 Dec 2020 06:57PM UTC

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Run time 1min

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Build # 36899

Build Type

push

travis-ci-com

Committed by

web-flow

Commit Message

fs.Snapshot is declared in Rust (#11328)

### Problem

Our fundamental filesystem types are declared in Python, but declaring them in Rust would cut down on FFI costs, and allow for better error messages by removing some usage of the `externs::getattr*` functions.

Additionally, the previous change to move `fs.Digest` to Rust in #10905 missed the optimization opportunity of directly extracting the inner Rust `Digest` instance.

### Solution

In two commits: port `fs.Snapshot` to Rust, and optimize the conversion of a `PyDigest` to a `Digest`.

### Result

6% faster runs of `./pants dependencies --transitive ::`.

[ci skip-build-wheels]

Run Details

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Jobs

ID	Job ID	Ran	Files	Coverage
5	36899.5 (PANTS_CONFIG_FILES="${TRAVIS_BUILD_DIR}/pants.travis-ci.toml" PANTS_DYNAMIC_UI=false LC_ALL="en_US.UTF-8" AWS_BUCKET=ci-public.pantsbuild.org BOOTSTRAPPED_PEX_KEY_PREFIX=daily/${TRAVIS_BUILD_NUMBER}/${TRAVIS_BUILD_ID}/pants.pex NATIVE_ENGINE_SO_KEY_PREFIX=monthly/native_engine_so MACOS_PYENV_PY27_VERSION=2.7.18 MACOS_PYENV_PY37_VERSION=3.7.7 MACOS_PYENV_PY38_VERSION=3.8.3 PYENV_ROOT_OSX=${HOME}/.pants_pyenv PYENV_ROOT="${PYENV_ROOT:-${PYENV_ROOT_OSX}}" PATH="${PYENV_ROOT}/shims:${PATH}" AWS_CLI_ROOT="${HOME}/.aws_cli" AWS_ACCESS_KEY_ID__TO_BE_REEXPORTED_ON_DEPLOYS=AKIAV6A6G7RQ2HFZ5KP7 AWS_SECRET_ACCESS_KEY=[secure] RUST_BACKTRACE="all" BOOTSTRAPPED_PEX_KEY_SUFFIX=py37.linux CACHE_NAME=python_tests.py37)	17 Dec 2020 06:57PM UTC	0	0.0	Travis Job 36899.5

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