R Under development (unstable) (2026-10-18 r90707 ucrt) -- "Unsuffered Consequences"
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Platform: x86_64-w64-mingw32/x64

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> library(testthat)
> library(a5R)
a5R 1.0.0 • a5 crate 1.0.0 • A5 index 1.0 • 1 thread
> 
> test_check("a5R")
-- a5R 1.0.0 -------------------------------------------------------------------
a5 crate: 1.0.0
Threads: 1
C API: 1
The tzdb package is not installed. Timezones will not be available to Arrow compute functions. If you get errors when using Arrow on datetimes, try running `install.packages('tzdb')` and trying again.

thread '<unnamed>' (219484) panicked at src\threading.rs:89:17:
a5R test panic
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
[ FAIL 0 | WARN 0 | SKIP 5 | PASS 1520 ]

══ Skipped tests (5) ═══════════════════════════════════════════════════════════
• On CRAN (4): 'test-c-api.R:3:3', 'test-cell.R:140:1', 'test-covering.R:28:1',
  'test-covering.R:44:1'
• On Windows (1): 'test-threads.R:104:3'

[ FAIL 0 | WARN 0 | SKIP 5 | PASS 1520 ]
> 
> proc.time()
   user  system elapsed 
  30.75    4.54   35.09