edubraqd commented on issue #10131:
URL: https://github.com/apache/arrow-rs/issues/10131#issuecomment-5532864204

   One more temporal cast that still panics on `main` 
(`arrow-cast/src/cast/mod.rs`, the `(Time64(Microsecond), Time64(Nanosecond))` 
arm uses an unchecked `x * (NANOSECONDS / MICROSECONDS)`), in case it helps 
whoever picks this up:
   
   ```rust
   let a = Time64MicrosecondArray::from(vec![i64::MAX]);
   let _ = cast(&a, &DataType::Time64(TimeUnit::Nanosecond));
   // thread panicked at arrow-cast/src/cast/mod.rs:1782:55 (59.2.0): attempt 
to multiply with overflow
   ```
   
   Reached from DataFusion with `SELECT 
arrow_cast(arrow_cast(9223372036854775807, 'Time64(Microsecond)'), 
'Time64(Nanosecond)')`.
   


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