Lamp testbench in Rust around the HPCS 6500
lampbench station / export / label / tm30 / calibrate replace the Python lamp_station.py, lamp_export.py, label_printer.py, tm30.py and calibration.py that lived in HPCS6500-py. The driver is a submodule (HPCS6500/, like mppt-testbench). Workspace crates: tm30 (TM-30-18 port of colour-science 0.4.7), brother-ql (raster protocol, byte-identical to brother_ql) and lamp-label (QR + ID labels for the QL-820NWB). Bundles are byte-identical to lamp_export.py's (golden tests); the station runs end to end in a test against the simulated instrument.
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//! The station end to end: scripted answers on stdin, the simulated
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//! instrument, a throwaway comparison-data repository.
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use std::io::Write;
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use std::path::Path;
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use std::process::{Command, Stdio};
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fn git(dir: &Path, args: &[&str]) -> String {
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let o = Command::new("git")
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.arg("-C")
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.arg(dir)
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.args(args)
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.output()
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.unwrap();
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assert!(
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o.status.success(),
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"git {args:?}: {}",
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String::from_utf8_lossy(&o.stderr)
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);
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String::from_utf8_lossy(&o.stdout).to_string()
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}
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/// A valid EAN-13 with the given 12 leading digits.
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fn ean(d12: &str) -> String {
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let sum: u32 = d12
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.chars()
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.enumerate()
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.map(|(i, c)| c.to_digit(10).unwrap() * if i % 2 == 1 { 3 } else { 1 })
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.sum();
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format!("{d12}{}", (10 - sum % 10) % 10)
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}
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#[test]
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fn station_measures_commits_and_re_measures() {
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let tmp = std::env::temp_dir().join(format!("lampbench-station-{}", std::process::id()));
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let _ = std::fs::remove_dir_all(&tmp);
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let repo = tmp.join("comparison-data");
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std::fs::create_dir_all(repo.join("lamps")).unwrap();
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git(&repo, &["init", "-q"]);
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git(&repo, &["config", "user.name", "Test"]);
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git(&repo, &["config", "user.email", "test@example.com"]);
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std::fs::write(repo.join("README.md"), "data\n").unwrap();
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git(&repo, &["add", "."]);
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git(&repo, &["commit", "-qm", "init"]);
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// --interval 0.5 keeps the runs in different seconds, so the re-measure changes measured_at
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let internal = ean("200123456789");
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let answers = [
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// lamp 1: no barcode
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"",
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"philips", // manufacturer -> canonical "Philips"
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"Test A60", // model
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"", // type: led
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"y", // dimmable
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"Warm White", // variant -> lower case
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"", // notes
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"806",
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"2700",
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"8.5",
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"",
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"",
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"60", // rated: flux, CCT, W, Ra, lifetime, equivalent
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"", // insert the lamp
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// lamp 2: retailer-internal EAN (no online lookup)
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&internal,
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"",
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"Shop bulb",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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// re-measure lamp 1, everything pre-filled
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"L0001",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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"",
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// a bad barcode, then quit
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"12345",
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"q",
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]
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.join("\n")
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+ "\n";
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let mut child = Command::new(env!("CARGO_BIN_EXE_lampbench"))
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.args([
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"station",
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"--simulate",
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"--settle",
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"0",
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"--readings",
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"2",
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"--interval",
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"0.5",
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"--no-push",
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"--no-labels",
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"--no-lookup",
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])
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.arg("--data-repo")
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.arg(&repo)
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.arg("--cache")
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.arg(tmp.join("ean-cache.json"))
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.env_remove("HPCS_LABEL_PRINTER")
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.stdin(Stdio::piped())
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.stdout(Stdio::piped())
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.stderr(Stdio::piped())
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.spawn()
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.unwrap();
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child
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.stdin
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.take()
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.unwrap()
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.write_all(answers.as_bytes())
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.unwrap();
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let out = child.wait_with_output().unwrap();
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let text = String::from_utf8_lossy(&out.stdout);
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assert!(
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out.status.success(),
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"{text}\n{}",
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String::from_utf8_lossy(&out.stderr)
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);
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assert!(text.contains("--- New lamp L0001 ---"), "{text}");
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assert!(
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text.contains("Using canonical brand name: Philips") || text.contains("Manufacturer"),
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"{text}"
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);
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assert!(
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text.contains("Lookup: ? / ? (retailer-internal barcode, not resolvable)"),
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"{text}"
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);
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assert!(text.contains("Re-measuring L0001"), "{text}");
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assert!(text.contains("Not a valid EAN-13/UPC-A: '12345'"), "{text}");
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assert!(text.contains("PSU off"), "{text}");
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assert!(text.trim_end().ends_with("Bye."), "{text}");
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let m: serde_json::Value = serde_json::from_str(
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&std::fs::read_to_string(repo.join("lamps/L0001/metrics.json")).unwrap(),
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)
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.unwrap();
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assert_eq!(m["manufacturer"], "Philips");
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assert_eq!(m["variant"], "warm white");
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assert_eq!(m["dimmable"], true);
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assert_eq!(m["type"], "led");
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assert_eq!(
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m["rated"],
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serde_json::json!({"Phi_lm": 806, "CCT_K": 2700, "Power_W": 8.5, "W_equiv": 60})
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);
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assert_eq!(m["readings_averaged"], 2);
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assert_eq!(m["supply"]["ac_voltage"], 230.0);
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let m2: serde_json::Value = serde_json::from_str(
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&std::fs::read_to_string(repo.join("lamps/L0002/metrics.json")).unwrap(),
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)
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.unwrap();
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assert_eq!(m2["ean"], internal.as_str());
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assert_eq!(m2["notes"], "retailer-internal barcode, brand unknown");
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assert_eq!(
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std::fs::read_to_string(repo.join("lamps/L0001/spd.csv"))
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.unwrap()
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.lines()
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.count(),
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351
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);
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assert_eq!(
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std::fs::read_to_string(repo.join("lamps/L0001/tm30.csv"))
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.unwrap()
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.lines()
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.count(),
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17
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);
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let log = git(&repo, &["log", "--format=%s"]);
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let subjects: Vec<&str> = log.lines().collect();
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assert_eq!(
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subjects[0], "Re-measure lamp L0001 (Philips, Test A60, warm white)",
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"{log}"
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);
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assert_eq!(
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subjects[1],
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format!("Add lamp L0002 (Shop bulb, EAN {internal})"),
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"{log}"
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);
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assert_eq!(
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subjects[2], "Add lamp L0001 (Philips, Test A60, warm white)",
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"{log}"
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);
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let _ = std::fs::remove_dir_all(&tmp);
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}
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