rust: Remove use of `py.eval()` The previous Rust code allocated an intermediate `Vec`, converted that to a Python list, then used `eval` to run Python code that converts that list to a Python set. rust-cpython exposes Rust bindings for Python sets, let’s use that instead to construct a set directly. Differential Revision: https://phab.mercurial-scm.org/D10328

# See http://EditorConfig.org for the specification

root = true

[*.py]
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indent_style = space
trim_trailing_whitespace = true
end_of_line = lf

[*.{c,h}]
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trim_trailing_whitespace = true
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[*.t]
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trim_trailing_whitespace = false
end_of_line = lf