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0.1: add Layer implementations for various containers #1536

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merged 2 commits into from
Sep 4, 2021

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jsgf
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@jsgf jsgf commented Sep 3, 2021

Add Layer<S> impls for:

  • Box<L>
  • Box<dyn Layer<S>>
  • Arc<L>
  • Arc<dyn Layer<S>>

where L: Layer<S>

Add Layer<S> impls for:
- Box<L>
- Box<dyn Layer<S>>
- Arc<L>
- Arc<dyn Layer<S>>

where L: Layer<S>
@jsgf jsgf requested review from hawkw and a team as code owners September 3, 2021 19:38
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jsgf commented Sep 3, 2021

Obv this could be mechanised with something like auto_impl but I didn't want to add a dependency. And I also considered a macro, since the only difference for each type is in the impl<S> Layer<S> for ... line.

... Hm, and the type params and where constraints.

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I think this looks good to me. I'm personally (slightly) against adding auto_impl as a dependency for two reasons:

  • some consumers of tracing-subscriber are sensitive to macro dependencies, and
  • this isn't that much boilerplate anyways.

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(i'm not gonna merge, I still want Eliza to review this.)

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jsgf commented Sep 3, 2021

I think a plain macro is a good tradeoff.

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looks good to me --- the macro seems like the right approach!

@hawkw hawkw merged commit f21028f into tokio-rs:v0.1.x Sep 4, 2021
hawkw pushed a commit that referenced this pull request Sep 10, 2021
hawkw added a commit that referenced this pull request Sep 12, 2021
# 0.2.21 (September 12, 2021)

This release introduces the [`Filter`] trait, a new API for [per-layer
filtering][plf]. This allows controlling which spans and events are
recorded by various layers individually, rather than globally.

In addition, it adds a new [`Targets`] filter, which provides a
lighter-weight version of the filtering provided by [`EnvFilter`], as
well as other smaller API improvements and fixes.

### Deprecated

- **registry**: `SpanRef::parent_id`, which cannot properly support
  per-layer filtering. Use `.parent().map(SpanRef::id)` instead.
  ([#1523])

### Fixed

- **layer** `Context` methods that are provided when the `Subscriber`
  implements `LookupSpan` no longer require the "registry" feature flag
  ([#1525])
- **layer** `fmt::Debug` implementation for `Layered` no longer requires
  the `S` type parameter to implement `Debug` ([#1528])

### Added

- **registry**: `Filter` trait, `Filtered` type, `Layer::with_filter`
  method, and other APIs for per-layer filtering ([#1523])
- **filter**: `FilterFn` and `DynFilterFn` types that implement global
  (`Layer`) and per-layer (`Filter`) filtering for closures and function
  pointers ([#1523])
- **filter**: `Targets` filter, which implements a lighter-weight form
  of `EnvFilter`-like filtering ([#1550])
- **env-filter**: Added support for filtering on floating-point values
  ([#1507])
- **layer**: `Layer::on_layer` callback, called when layering the
  `Layer` onto a `Subscriber` ([#1523])
- **layer**: `Layer` implementations for `Box<L>` and `Arc<L>` where `L:
  Layer` ([#1536])
- **layer**: `Layer` implementations for `Box<dyn Layer<S> + Send + Sync
  + 'static>` and `Arc<dyn Layer<S> + Send + Sync + 'static>` ([#1536])
- A number of small documentation fixes and improvements ([#1553],
  [#1544], [#1539], [#1524])

Special thanks to new contributors @jsgf and @maxburke for contributing
to this release!

[`Filter`]: https://docs.rs/tracing-subscriber/0.2.21/tracing_subscriber/layer/trait.Filter.html
[`plf`]: https://docs.rs/tracing-subscriber/0.2.21/tracing_subscriber/layer/index.html#per-layer-filtering
[`Targets`]: https://docs.rs/tracing-subscriber/0.2.21/tracing_subscriber/filter/struct.Targets.html
[`EnvFilter`]: https://docs.rs/tracing-subscriber/0.2.21/tracing_subscriber/filter/struct.EnvFilter.html
[#1507]: #1507
[#1523]: #1523
[#1524]: #1524
[#1525]: #1525
[#1528]: #1528
[#1539]: #1539
[#1544]: #1544
[#1550]: #1550
[#1553]: #1553
hawkw added a commit that referenced this pull request Sep 12, 2021
# 0.2.21 (September 12, 2021)

This release introduces the [`Filter`] trait, a new API for [per-layer
filtering][plf]. This allows controlling which spans and events are
recorded by various layers individually, rather than globally.

In addition, it adds a new [`Targets`] filter, which provides a
lighter-weight version of the filtering provided by [`EnvFilter`], as
well as other smaller API improvements and fixes.

### Deprecated

- **registry**: `SpanRef::parent_id`, which cannot properly support
  per-layer filtering. Use `.parent().map(SpanRef::id)` instead.
  ([#1523])

### Fixed

- **layer** `Context` methods that are provided when the `Subscriber`
  implements `LookupSpan` no longer require the "registry" feature flag
  ([#1525])
- **layer** `fmt::Debug` implementation for `Layered` no longer requires
  the `S` type parameter to implement `Debug` ([#1528])

### Added

- **registry**: `Filter` trait, `Filtered` type, `Layer::with_filter`
  method, and other APIs for per-layer filtering ([#1523])
- **filter**: `FilterFn` and `DynFilterFn` types that implement global
  (`Layer`) and per-layer (`Filter`) filtering for closures and function
  pointers ([#1523])
- **filter**: `Targets` filter, which implements a lighter-weight form
  of `EnvFilter`-like filtering ([#1550])
- **env-filter**: Added support for filtering on floating-point values
  ([#1507])
- **layer**: `Layer::on_layer` callback, called when layering the
  `Layer` onto a `Subscriber` ([#1523])
- **layer**: `Layer` implementations for `Box<L>` and `Arc<L>` where `L:
  Layer` ([#1536])
- **layer**: `Layer` implementations for `Box<dyn Layer<S> + Send + Sync
  + 'static>` and `Arc<dyn Layer<S> + Send + Sync + 'static>` ([#1536])
- A number of small documentation fixes and improvements ([#1553],
  [#1544], [#1539], [#1524])

Special thanks to new contributors @jsgf and @maxburke for contributing
to this release!

[`Filter`]: https://docs.rs/tracing-subscriber/0.2.21/tracing_subscriber/layer/trait.Filter.html
[`plf`]: https://docs.rs/tracing-subscriber/0.2.21/tracing_subscriber/layer/index.html#per-layer-filtering
[`Targets`]: https://docs.rs/tracing-subscriber/0.2.21/tracing_subscriber/filter/struct.Targets.html
[`EnvFilter`]: https://docs.rs/tracing-subscriber/0.2.21/tracing_subscriber/filter/struct.EnvFilter.html
[#1507]: #1507
[#1523]: #1523
[#1524]: #1524
[#1525]: #1525
[#1528]: #1528
[#1539]: #1539
[#1544]: #1544
[#1550]: #1550
[#1553]: #1553
hawkw added a commit that referenced this pull request Sep 12, 2021
# 0.2.21 (September 12, 2021)

This release introduces the [`Filter`] trait, a new API for [per-layer
filtering][plf]. This allows controlling which spans and events are
recorded by various layers individually, rather than globally.

In addition, it adds a new [`Targets`] filter, which provides a
lighter-weight version of the filtering provided by [`EnvFilter`], as
well as other smaller API improvements and fixes.

### Deprecated

- **registry**: `SpanRef::parent_id`, which cannot properly support
  per-layer filtering. Use `.parent().map(SpanRef::id)` instead.
  ([#1523])

### Fixed

- **layer** `Context` methods that are provided when the `Subscriber`
  implements `LookupSpan` no longer require the "registry" feature flag
  ([#1525])
- **layer** `fmt::Debug` implementation for `Layered` no longer requires
  the `S` type parameter to implement `Debug` ([#1528])

### Added

- **registry**: `Filter` trait, `Filtered` type, `Layer::with_filter`
  method, and other APIs for per-layer filtering ([#1523])
- **filter**: `FilterFn` and `DynFilterFn` types that implement global
  (`Layer`) and per-layer (`Filter`) filtering for closures and function
  pointers ([#1523])
- **filter**: `Targets` filter, which implements a lighter-weight form
  of `EnvFilter`-like filtering ([#1550])
- **env-filter**: Added support for filtering on floating-point values
  ([#1507])
- **layer**: `Layer::on_layer` callback, called when layering the
  `Layer` onto a `Subscriber` ([#1523])
- **layer**: `Layer` implementations for `Box<L>` and `Arc<L>` where `L:
  Layer` ([#1536])
- **layer**: `Layer` implementations for  `Box<dyn Layer>` and 
  `Arc<dyn Layer>` ([#1536])
- A number of small documentation fixes and improvements ([#1553],
  [#1544], [#1539], [#1524])

Special thanks to new contributors @jsgf and @maxburke for contributing
to this release!

[`Filter`]: https://docs.rs/tracing-subscriber/0.2.21/tracing_subscriber/layer/trait.Filter.html
[plf]: https://docs.rs/tracing-subscriber/0.2.21/tracing_subscriber/layer/index.html#per-layer-filtering
[`Targets`]: https://docs.rs/tracing-subscriber/0.2.21/tracing_subscriber/filter/struct.Targets.html
[`EnvFilter`]: https://docs.rs/tracing-subscriber/0.2.21/tracing_subscriber/filter/struct.EnvFilter.html
[#1507]: #1507
[#1523]: #1523
[#1524]: #1524
[#1525]: #1525
[#1528]: #1528
[#1539]: #1539
[#1544]: #1544
[#1550]: #1550
[#1553]: #1553
hawkw added a commit that referenced this pull request Sep 12, 2021
# 0.2.21 (September 12, 2021)

This release introduces the [`Filter`] trait, a new API for [per-layer
filtering][plf]. This allows controlling which spans and events are
recorded by various layers individually, rather than globally.

In addition, it adds a new [`Targets`] filter, which provides a
lighter-weight version of the filtering provided by [`EnvFilter`], as
well as other smaller API improvements and fixes.

### Deprecated

- **registry**: `SpanRef::parent_id`, which cannot properly support
  per-layer filtering. Use `.parent().map(SpanRef::id)` instead.
  ([#1523])

### Fixed

- **layer** `Context` methods that are provided when the `Subscriber`
  implements `LookupSpan` no longer require the "registry" feature flag
  ([#1525])
- **layer** `fmt::Debug` implementation for `Layered` no longer requires
  the `S` type parameter to implement `Debug` ([#1528])

### Added

- **registry**: `Filter` trait, `Filtered` type, `Layer::with_filter`
  method, and other APIs for per-layer filtering ([#1523])
- **filter**: `FilterFn` and `DynFilterFn` types that implement global
  (`Layer`) and per-layer (`Filter`) filtering for closures and function
  pointers ([#1523])
- **filter**: `Targets` filter, which implements a lighter-weight form
  of `EnvFilter`-like filtering ([#1550])
- **env-filter**: Added support for filtering on floating-point values
  ([#1507])
- **layer**: `Layer::on_layer` callback, called when layering the
  `Layer` onto a `Subscriber` ([#1523])
- **layer**: `Layer` implementations for `Box<L>` and `Arc<L>` where `L:
  Layer` ([#1536])
- **layer**: `Layer` implementations for  `Box<dyn Layer>` and
  `Arc<dyn Layer>` ([#1536])
- A number of small documentation fixes and improvements ([#1553],
  [#1544], [#1539], [#1524])

Special thanks to new contributors @jsgf and @maxburke for contributing
to this release!

[`Filter`]: https://docs.rs/tracing-subscriber/0.2.21/tracing_subscriber/layer/trait.Filter.html
[plf]: https://docs.rs/tracing-subscriber/0.2.21/tracing_subscriber/layer/index.html#per-layer-filtering
[`Targets`]: https://docs.rs/tracing-subscriber/0.2.21/tracing_subscriber/filter/struct.Targets.html
[`EnvFilter`]: https://docs.rs/tracing-subscriber/0.2.21/tracing_subscriber/filter/struct.EnvFilter.html
[#1507]: #1507
[#1523]: #1523
[#1524]: #1524
[#1525]: #1525
[#1528]: #1528
[#1539]: #1539
[#1544]: #1544
[#1550]: #1550
[#1553]: #1553
davidbarsky added a commit that referenced this pull request Sep 13, 2021
Add `Layer<S>` impls for:
- `Box<L>`
- `Box<dyn Layer<S>>`
- `Arc<L>`
- `Arc<dyn Layer<S>>`
 where `L: Layer<S>`
davidbarsky added a commit that referenced this pull request Sep 13, 2021
hawkw pushed a commit that referenced this pull request Sep 15, 2021
Add `Layer<S>` impls for:
- `Box<L>`
- `Box<dyn Layer<S>>`
- `Arc<L>`
- `Arc<dyn Layer<S>>`
 where `L: Layer<S>`
hawkw pushed a commit that referenced this pull request Sep 15, 2021
facebook-github-bot pushed a commit to facebook/fb303 that referenced this pull request Sep 15, 2021
Summary:
This includes recent changes:
- `skip_all` in #[instrument] tokio-rs/tracing#1548
- NoSubscriber no-op Subscriber tokio-rs/tracing#1549
- Box/Arc Layer (tokio-rs/tracing#1536 +
  tokio-rs/tracing#1547)
- log filtering fixes tokio-rs/tracing#1543

Local: force `log` and `log-always` features off. This removes the
`enable-trace-logging` flag from smartplatform/reconciler.

Reviewed By: guswynn

Differential Revision: D30906032

fbshipit-source-id: fdc3e4e29a39e9e181d9f4ff017e6b3e16acdcd8
facebook-github-bot pushed a commit to facebook/fbthrift that referenced this pull request Sep 15, 2021
Summary:
This includes recent changes:
- `skip_all` in #[instrument] tokio-rs/tracing#1548
- NoSubscriber no-op Subscriber tokio-rs/tracing#1549
- Box/Arc Layer (tokio-rs/tracing#1536 +
  tokio-rs/tracing#1547)
- log filtering fixes tokio-rs/tracing#1543

Local: force `log` and `log-always` features off. This removes the
`enable-trace-logging` flag from smartplatform/reconciler.

Reviewed By: guswynn

Differential Revision: D30906032

fbshipit-source-id: fdc3e4e29a39e9e181d9f4ff017e6b3e16acdcd8
facebook-github-bot pushed a commit to facebookexperimental/rust-shed that referenced this pull request Sep 15, 2021
Summary:
This includes recent changes:
- `skip_all` in #[instrument] tokio-rs/tracing#1548
- NoSubscriber no-op Subscriber tokio-rs/tracing#1549
- Box/Arc Layer (tokio-rs/tracing#1536 +
  tokio-rs/tracing#1547)
- log filtering fixes tokio-rs/tracing#1543

Local: force `log` and `log-always` features off. This removes the
`enable-trace-logging` flag from smartplatform/reconciler.

Reviewed By: guswynn

Differential Revision: D30906032

fbshipit-source-id: fdc3e4e29a39e9e181d9f4ff017e6b3e16acdcd8
facebook-github-bot pushed a commit to facebookincubator/antlir that referenced this pull request Sep 15, 2021
Summary:
This includes recent changes:
- `skip_all` in #[instrument] tokio-rs/tracing#1548
- NoSubscriber no-op Subscriber tokio-rs/tracing#1549
- Box/Arc Layer (tokio-rs/tracing#1536 +
  tokio-rs/tracing#1547)
- log filtering fixes tokio-rs/tracing#1543

Local: force `log` and `log-always` features off. This removes the
`enable-trace-logging` flag from smartplatform/reconciler.

Reviewed By: guswynn

Differential Revision: D30906032

fbshipit-source-id: fdc3e4e29a39e9e181d9f4ff017e6b3e16acdcd8
facebook-github-bot pushed a commit to facebook/sapling that referenced this pull request Sep 15, 2021
Summary:
This includes recent changes:
- `skip_all` in #[instrument] tokio-rs/tracing#1548
- NoSubscriber no-op Subscriber tokio-rs/tracing#1549
- Box/Arc Layer (tokio-rs/tracing#1536 +
  tokio-rs/tracing#1547)
- log filtering fixes tokio-rs/tracing#1543

Local: force `log` and `log-always` features off. This removes the
`enable-trace-logging` flag from smartplatform/reconciler.

Reviewed By: guswynn

Differential Revision: D30906032

fbshipit-source-id: fdc3e4e29a39e9e181d9f4ff017e6b3e16acdcd8
hawkw added a commit that referenced this pull request Sep 17, 2021
The `Layer::on_layer` method on `Layer` was added in PR #1523. PR #1536,
which added `Layer` implementations to `Box<dyn Layer<...> + ...>` and
`Arc<dyn Layer<...> + ...>`, merged prior to #1523. However, when
merging #1523, I didn't think to update the `Layer` impl for `Box`ed and
`Arc`ed layers to forward `on_layer` to the inner `Layer`. This means
that when a `Layer` is wrapped in an `Arc` or a `Box`, the `on_layer`
method never gets called.

When per-layer filters are in use, the `on_layer` method is necessary to
ensure the filter is registered with the inner subscriber and has a
valid ID. This bug means that when per-layer filters are wrapped in a
`Box` or `Arc`, they won't be registered, and per-layer filtering
breaks.

This PR fixes the bug by adding `on_layer` implementations to the
`Layer` impls for `Arc`ed and `Box`ed layers. I also added some tests
--- thanks to @Noah-Kennedy for the original repro that these were based
on (#1563 (comment)).

Signed-off-by: Eliza Weisman <[email protected]>
hawkw added a commit that referenced this pull request Sep 17, 2021
The `Layer::on_layer` method on `Layer` was added in PR #1523. PR #1536,
which added `Layer` implementations to `Box<dyn Layer<...> + ...>` and
`Arc<dyn Layer<...> + ...>`, merged prior to #1523. However, when
merging #1523, I didn't think to update the `Layer` impl for `Box`ed and
`Arc`ed layers to forward `on_layer` to the inner `Layer`. This means
that when a `Layer` is wrapped in an `Arc` or a `Box`, the `on_layer`
method never gets called.

When per-layer filters are in use, the `on_layer` method is necessary to
ensure the filter is registered with the inner subscriber and has a
valid ID. This bug means that when per-layer filters are wrapped in a
`Box` or `Arc`, they won't be registered, and per-layer filtering
breaks.

This PR fixes the bug by adding `on_layer` implementations to the
`Layer` impls for `Arc`ed and `Box`ed layers. I also added some tests
--- thanks to @Noah-Kennedy for the original repro that these were based
on (#1563 (comment)).

I also added a nicer debug assertion to `Filtered` for cases where
`Layer` impls don't call `on_layer`, so that this fails less confusingly
in the future.

Signed-off-by: Eliza Weisman <[email protected]>
vkill pushed a commit to bk-rs/fbthrift-git-rs that referenced this pull request Jan 12, 2023
Summary:
This includes recent changes:
- `skip_all` in #[instrument] tokio-rs/tracing#1548
- NoSubscriber no-op Subscriber tokio-rs/tracing#1549
- Box/Arc Layer (tokio-rs/tracing#1536 +
  tokio-rs/tracing#1547)
- log filtering fixes tokio-rs/tracing#1543

Local: force `log` and `log-always` features off. This removes the
`enable-trace-logging` flag from smartplatform/reconciler.

Reviewed By: guswynn

Differential Revision: D30906032

fbshipit-source-id: fdc3e4e29a39e9e181d9f4ff017e6b3e16acdcd8
kaffarell pushed a commit to kaffarell/tracing that referenced this pull request May 22, 2024
…s#1536)

Add `Layer<S>` impls for:
- `Box<L>`
- `Box<dyn Layer<S>>`
- `Arc<L>`
- `Arc<dyn Layer<S>>`

where `L: Layer<S>`
kaffarell pushed a commit to kaffarell/tracing that referenced this pull request May 22, 2024
kaffarell pushed a commit to kaffarell/tracing that referenced this pull request May 22, 2024
# 0.2.21 (September 12, 2021)

This release introduces the [`Filter`] trait, a new API for [per-layer
filtering][plf]. This allows controlling which spans and events are
recorded by various layers individually, rather than globally.

In addition, it adds a new [`Targets`] filter, which provides a
lighter-weight version of the filtering provided by [`EnvFilter`], as
well as other smaller API improvements and fixes.

### Deprecated

- **registry**: `SpanRef::parent_id`, which cannot properly support
  per-layer filtering. Use `.parent().map(SpanRef::id)` instead.
  ([tokio-rs#1523])

### Fixed

- **layer** `Context` methods that are provided when the `Subscriber`
  implements `LookupSpan` no longer require the "registry" feature flag
  ([tokio-rs#1525])
- **layer** `fmt::Debug` implementation for `Layered` no longer requires
  the `S` type parameter to implement `Debug` ([tokio-rs#1528])

### Added

- **registry**: `Filter` trait, `Filtered` type, `Layer::with_filter`
  method, and other APIs for per-layer filtering ([tokio-rs#1523])
- **filter**: `FilterFn` and `DynFilterFn` types that implement global
  (`Layer`) and per-layer (`Filter`) filtering for closures and function
  pointers ([tokio-rs#1523])
- **filter**: `Targets` filter, which implements a lighter-weight form
  of `EnvFilter`-like filtering ([tokio-rs#1550])
- **env-filter**: Added support for filtering on floating-point values
  ([tokio-rs#1507])
- **layer**: `Layer::on_layer` callback, called when layering the
  `Layer` onto a `Subscriber` ([tokio-rs#1523])
- **layer**: `Layer` implementations for `Box<L>` and `Arc<L>` where `L:
  Layer` ([tokio-rs#1536])
- **layer**: `Layer` implementations for  `Box<dyn Layer>` and
  `Arc<dyn Layer>` ([tokio-rs#1536])
- A number of small documentation fixes and improvements ([tokio-rs#1553],
  [tokio-rs#1544], [tokio-rs#1539], [tokio-rs#1524])

Special thanks to new contributors @jsgf and @maxburke for contributing
to this release!

[`Filter`]: https://docs.rs/tracing-subscriber/0.2.21/tracing_subscriber/layer/trait.Filter.html
[plf]: https://docs.rs/tracing-subscriber/0.2.21/tracing_subscriber/layer/index.html#per-layer-filtering
[`Targets`]: https://docs.rs/tracing-subscriber/0.2.21/tracing_subscriber/filter/struct.Targets.html
[`EnvFilter`]: https://docs.rs/tracing-subscriber/0.2.21/tracing_subscriber/filter/struct.EnvFilter.html
[tokio-rs#1507]: tokio-rs#1507
[tokio-rs#1523]: tokio-rs#1523
[tokio-rs#1524]: tokio-rs#1524
[tokio-rs#1525]: tokio-rs#1525
[tokio-rs#1528]: tokio-rs#1528
[tokio-rs#1539]: tokio-rs#1539
[tokio-rs#1544]: tokio-rs#1544
[tokio-rs#1550]: tokio-rs#1550
[tokio-rs#1553]: tokio-rs#1553
kaffarell pushed a commit to kaffarell/tracing that referenced this pull request May 22, 2024
…-rs#1576)

The `Layer::on_layer` method on `Layer` was added in PR tokio-rs#1523. PR tokio-rs#1536,
which added `Layer` implementations to `Box<dyn Layer<...> + ...>` and
`Arc<dyn Layer<...> + ...>`, merged prior to tokio-rs#1523. However, when
merging tokio-rs#1523, I didn't think to update the `Layer` impl for `Box`ed and
`Arc`ed layers to forward `on_layer` to the inner `Layer`. This means
that when a `Layer` is wrapped in an `Arc` or a `Box`, the `on_layer`
method never gets called.

When per-layer filters are in use, the `on_layer` method is necessary to
ensure the filter is registered with the inner subscriber and has a
valid ID. This bug means that when per-layer filters are wrapped in a
`Box` or `Arc`, they won't be registered, and per-layer filtering
breaks.

This PR fixes the bug by adding `on_layer` implementations to the
`Layer` impls for `Arc`ed and `Box`ed layers. I also added some tests
--- thanks to @Noah-Kennedy for the original repro that these were based
on (tokio-rs#1563 (comment)).

I also added a nicer debug assertion to `Filtered` for cases where
`Layer` impls don't call `on_layer`, so that this fails less confusingly
in the future.

Signed-off-by: Eliza Weisman <[email protected]>
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3 participants