alamb opened a new issue #695:
URL: https://github.com/apache/arrow-datafusion/issues/695
**Describe the bug**
When I build datafusion like this
```
cargo +1.52.1 test -p datafusion
```
I get the following error:
```
Compiling datafusion v4.0.0-SNAPSHOT
(/Users/alamb/Software/arrow-datafusion/datafusion)
error[E0277]: `[(std::string::String, SQLMetric); 2]` is not an iterator
--> datafusion/src/physical_plan/parquet.rs:516:14
|
516 | .flat_map(|p| {
| ^^^^^^^^ borrow the array with `&` or call `.iter()` on
it to iterate over it
|
= help: the trait `Iterator` is not implemented for
`[(std::string::String, SQLMetric); 2]`
= note: arrays are not iterators, but slices like the following are:
`&[1, 2, 3]`
= note: required because of the requirements on the impl of
`IntoIterator` for `[(std::string::String, SQLMetric); 2]`
error[E0599]: the method `chain` exists for struct
`std::iter::FlatMap<std::slice::Iter<'_, ParquetPartition>,
[(std::string::String, SQLMetric); 2],
[closure@datafusion/src/physical_plan/parquet.rs:516:23: 530:14]>`, but its
trait bounds were not satisfied
--> datafusion/src/physical_plan/parquet.rs:531:14
|
531 | .chain(std::iter::once((
| ^^^^^ method cannot be called on
`std::iter::FlatMap<std::slice::Iter<'_, ParquetPartition>,
[(std::string::String, SQLMetric); 2],
[closure@datafusion/src/physical_plan/parquet.rs:516:23: 530:14]>` due to
unsatisfied trait bounds
|
:::
/Users/alamb/.rustup/toolchains/1.52.1-x86_64-apple-darwin/lib/rustlib/src/rust/library/core/src/iter/adapters/flatten.rs:12:1
|
12 | pub struct FlatMap<I, U: IntoIterator, F> {
| -----------------------------------------
| |
| doesn't satisfy `_: Iterator`
| doesn't satisfy `_: futures::StreamExt`
| doesn't satisfy `_: futures::Stream`
|
= note: the following trait bounds were not satisfied:
`std::iter::FlatMap<std::slice::Iter<'_, ParquetPartition>,
[(std::string::String, SQLMetric); 2],
[closure@datafusion/src/physical_plan/parquet.rs:516:23: 530:14]>:
futures::Stream`
which is required by `std::iter::FlatMap<std::slice::Iter<'_,
ParquetPartition>, [(std::string::String, SQLMetric); 2],
[closure@datafusion/src/physical_plan/parquet.rs:516:23: 530:14]>:
futures::StreamExt`
`[(std::string::String, SQLMetric); 2]: IntoIterator`
which is required by `std::iter::FlatMap<std::slice::Iter<'_,
ParquetPartition>, [(std::string::String, SQLMetric); 2],
[closure@datafusion/src/physical_plan/parquet.rs:516:23: 530:14]>: Iterator`
`&std::iter::FlatMap<std::slice::Iter<'_, ParquetPartition>,
[(std::string::String, SQLMetric); 2],
[closure@datafusion/src/physical_plan/parquet.rs:516:23: 530:14]>:
futures::Stream`
which is required by `&std::iter::FlatMap<std::slice::Iter<'_,
ParquetPartition>, [(std::string::String, SQLMetric); 2],
[closure@datafusion/src/physical_plan/parquet.rs:516:23: 530:14]>:
futures::StreamExt`
`&mut std::iter::FlatMap<std::slice::Iter<'_, ParquetPartition>,
[(std::string::String, SQLMetric); 2],
[closure@datafusion/src/physical_plan/parquet.rs:516:23: 530:14]>:
futures::Stream`
which is required by `&mut
std::iter::FlatMap<std::slice::Iter<'_, ParquetPartition>,
[(std::string::String, SQLMetric); 2],
[closure@datafusion/src/physical_plan/parquet.rs:516:23: 530:14]>:
futures::StreamExt`
`std::iter::FlatMap<std::slice::Iter<'_, ParquetPartition>,
[(std::string::String, SQLMetric); 2],
[closure@datafusion/src/physical_plan/parquet.rs:516:23: 530:14]>: Iterator`
which is required by `&mut
std::iter::FlatMap<std::slice::Iter<'_, ParquetPartition>,
[(std::string::String, SQLMetric); 2],
[closure@datafusion/src/physical_plan/parquet.rs:516:23: 530:14]>: Iterator`
error: aborting due to 2 previous errors
Some errors have detailed explanations: E0277, E0599.
For more information about an error, try `rustc --explain E0277`.
error: could not compile `datafusion`
To learn more, run the command again with --verbose.
warning: build failed, waiting for other jobs to finish...
error[E0277]: `[(std::string::String, SQLMetric); 2]` is not an iterator
--> datafusion/src/physical_plan/parquet.rs:516:14
|
516 | .flat_map(|p| {
| ^^^^^^^^ borrow the array with `&` or call `.iter()` on
it to iterate over it
|
= help: the trait `Iterator` is not implemented for
`[(std::string::String, SQLMetric); 2]`
= note: arrays are not iterators, but slices like the following are:
`&[1, 2, 3]`
= note: required because of the requirements on the impl of
`IntoIterator` for `[(std::string::String, SQLMetric); 2]`
error[E0599]: the method `chain` exists for struct
`std::iter::FlatMap<std::slice::Iter<'_, ParquetPartition>,
[(std::string::String, SQLMetric); 2],
[closure@datafusion/src/physical_plan/parquet.rs:516:23: 530:14]>`, but its
trait bounds were not satisfied
--> datafusion/src/physical_plan/parquet.rs:531:14
|
531 | .chain(std::iter::once((
| ^^^^^ method cannot be called on
`std::iter::FlatMap<std::slice::Iter<'_, ParquetPartition>,
[(std::string::String, SQLMetric); 2],
[closure@datafusion/src/physical_plan/parquet.rs:516:23: 530:14]>` due to
unsatisfied trait bounds
|
:::
/Users/alamb/.rustup/toolchains/1.52.1-x86_64-apple-darwin/lib/rustlib/src/rust/library/core/src/iter/adapters/flatten.rs:12:1
|
12 | pub struct FlatMap<I, U: IntoIterator, F> {
| -----------------------------------------
| |
| doesn't satisfy `_: Iterator`
| doesn't satisfy `_: futures::StreamExt`
| doesn't satisfy `_: futures::Stream`
|
= note: the following trait bounds were not satisfied:
`std::iter::FlatMap<std::slice::Iter<'_, ParquetPartition>,
[(std::string::String, SQLMetric); 2],
[closure@datafusion/src/physical_plan/parquet.rs:516:23: 530:14]>:
futures::Stream`
which is required by `std::iter::FlatMap<std::slice::Iter<'_,
ParquetPartition>, [(std::string::String, SQLMetric); 2],
[closure@datafusion/src/physical_plan/parquet.rs:516:23: 530:14]>:
futures::StreamExt`
`[(std::string::String, SQLMetric); 2]: IntoIterator`
which is required by `std::iter::FlatMap<std::slice::Iter<'_,
ParquetPartition>, [(std::string::String, SQLMetric); 2],
[closure@datafusion/src/physical_plan/parquet.rs:516:23: 530:14]>: Iterator`
`&std::iter::FlatMap<std::slice::Iter<'_, ParquetPartition>,
[(std::string::String, SQLMetric); 2],
[closure@datafusion/src/physical_plan/parquet.rs:516:23: 530:14]>:
futures::Stream`
which is required by `&std::iter::FlatMap<std::slice::Iter<'_,
ParquetPartition>, [(std::string::String, SQLMetric); 2],
[closure@datafusion/src/physical_plan/parquet.rs:516:23: 530:14]>:
futures::StreamExt`
`&mut std::iter::FlatMap<std::slice::Iter<'_, ParquetPartition>,
[(std::string::String, SQLMetric); 2],
[closure@datafusion/src/physical_plan/parquet.rs:516:23: 530:14]>:
futures::Stream`
which is required by `&mut
std::iter::FlatMap<std::slice::Iter<'_, ParquetPartition>,
[(std::string::String, SQLMetric); 2],
[closure@datafusion/src/physical_plan/parquet.rs:516:23: 530:14]>:
futures::StreamExt`
`std::iter::FlatMap<std::slice::Iter<'_, ParquetPartition>,
[(std::string::String, SQLMetric); 2],
[closure@datafusion/src/physical_plan/parquet.rs:516:23: 530:14]>: Iterator`
which is required by `&mut
std::iter::FlatMap<std::slice::Iter<'_, ParquetPartition>,
[(std::string::String, SQLMetric); 2],
[closure@datafusion/src/physical_plan/parquet.rs:516:23: 530:14]>: Iterator`
error: aborting due to 2 previous errors
Some errors have detailed explanations: E0277, E0599.
For more information about an error, try `rustc --explain E0277`.
error: build failed
Compilation exited abnormally with code 101 at Wed Jul 7 11:00:32
```
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