Make sure toolstates.json ends in a newline
This avoids the following broken logging in CI: ``` {"book":"test-pass","reference":"test-pass","rustbook":"test-fail","rust-by-example":"test-pass","nomicon":"test-pass","embedded-book":"test-pass","edition-guide":"test-pass"}::group::Building bootstrap ```
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@ -262,6 +262,8 @@ fn toolstates(&self) -> HashMap<Box<str>, ToolState> {
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/// `rust.save-toolstates` in `config.toml`. If unspecified, nothing will be
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/// done. The file is updated immediately after this function completes.
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pub fn save_toolstate(&self, tool: &str, state: ToolState) {
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use std::io::Write;
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// If we're in a dry run setting we don't want to save toolstates as
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// that means if we e.g. panic down the line it'll look like we tested
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// everything (but we actually haven't).
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@ -286,7 +288,8 @@ pub fn save_toolstate(&self, tool: &str, state: ToolState) {
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current_toolstates.insert(tool.into(), state);
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t!(file.seek(SeekFrom::Start(0)));
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t!(file.set_len(0));
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t!(serde_json::to_writer(file, ¤t_toolstates));
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t!(serde_json::to_writer(&file, ¤t_toolstates));
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t!(writeln!(file)); // make sure this ends in a newline
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}
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}
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}
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