syntax_data: {"ast_node_type":"variable","tokens":[{"end":66,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:         let stdout = String::from_utf8(stdout).context("stdout")?;
context_before:         } = cmd.args(args).output()?;
context_after:         let stderr = String::from_utf8(stderr).context("stderr")?;