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Add Context method for resolving an Event's SpanRef #1434

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merged 9 commits into from
Jun 23, 2021

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nightkr
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@nightkr nightkr commented Jun 10, 2021

Motivation

Fixes #1428

Solution

Adds a new Context::event_span method as proposed in the issue.

No existing formatters were changed to use it yet, that seems like a secondary issue (especially if they already work correctly).

@nightkr nightkr requested review from hawkw and a team as code owners June 10, 2021 20:29
@nightkr nightkr mentioned this pull request Jun 11, 2021
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this looks great --- i had a couple very small docs suggestions, but no major blockers!

in #1431 (comment), we discussed adding an event_scope helper to iterate over all the spans in an event's scope, do you want to add that as part of this branch as well, or in a follow-up once this is merged? i'm fine either way.

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nightkr commented Jun 23, 2021

Added event_span example+test and event_scope

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lgtm --- i commented on a couple tiny nits.

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@hawkw hawkw merged commit 067d214 into tokio-rs:v0.1.x Jun 23, 2021
nightkr added a commit to Appva/tracing that referenced this pull request Jun 24, 2021
…o-rs#1434)

Fixes tokio-rs#1428 (forward-port from v0.1.x)

Adds a new `Context::event_span` method as proposed in the issue.

No existing formatters were changed to use it yet, that seems like a
secondary issue (especially if they already work correctly).
hawkw pushed a commit that referenced this pull request Jun 24, 2021
Forward-port of #1431 and #1434

* subscriber: unify span traversal (#1431)

## Motivation

Fixes #1429 (forwardport from v0.1.x branch)

## Solution

Implemented as described in #1429, and migrated all internal uses of the
deprecated methods. All tests passed both before and after the migration
(9ec8130).

- Add a new method `SpanRef::scope(&self)` that returns a leaf-to-root
  `Iterator`, including the specified leaf
- Add a new method `Scope::from_root(self)` (where `Scope` is the type
  returned by `SpanRef::scope` defined earlier) that returns a
  root-to-leaf `Iterator` that ends at the current leaf (in other
  words: it's essentially the same as
  `Scope::collect::<Vec<_>>().into_iter().rev()`)
- Deprecate all existing iterators, since they can be replaced by the
  new unified mechanism:
  - `Span::parents` is equivalent to `Span::scope().skip(1)` (although
    the `skip` is typically a bug)
  - `Span::from_root` is equivalent to `Span::scope().skip(1).from_root()`
    (although the `skip` is typically a bug)
  - `Context::scope` is equivalent to
    `Context::lookup_current().scope().from_root()` (although the
    `lookup_current` is sometimes a bug, see also #1428)

* subscriber: add Context method for resolving an Event's SpanRef (#1434)

## Motivation

Fixes #1428 (forward-port from v0.1.x)

## Solution

Adds a new `Context::event_span` method as proposed in the issue.

No existing formatters were changed to use it yet, that seems like a
secondary issue (especially if they already work correctly).
hawkw added a commit that referenced this pull request Jun 26, 2021
# 0.2.19 (June 25, 2021)

### Deprecated

- **registry**: `SpanRef::parents`, `SpanRef::from_root`, and
  `Context::scope` iterators, which are replaced by new `SpanRef::scope`
  and `Scope::from_root` iterators (#1413)

### Added

- **registry**: `SpanRef::scope` method, which returns a leaf-to-root
  `Iterator` including the leaf span (#1413)
- **registry**: `Scope::from_root` method, which reverses the `scope`
  iterator to iterate root-to-leaf (#1413)
- **registry**: `Context::event_span` method, which looks up the parent
  span of an event (#1434)
- **registry**: `Context::event_scope` method, returning a `Scope`
  iterator over the span scope of an event (#1434)
- **fmt**: `MakeWriter::make_writer_for` method, which allows returning
  a different writer based on a span or event's metadata (#1141)
- **fmt**: `MakeWriterExt` trait, with `with_max_level`,
  `with_min_level`, `with_filter`, `and`, and `or_else` combinators
  (#1274)
- **fmt**: `MakeWriter` implementation for `Arc<W> where &W: io::Write`
  (#1274)

Thanks to @teozkr and @Folyd for contributing to this release!
hawkw added a commit that referenced this pull request Jun 26, 2021
# 0.2.19 (June 25, 2021)

### Deprecated

- **registry**: `SpanRef::parents`, `SpanRef::from_root`, and
  `Context::scope` iterators, which are replaced by new `SpanRef::scope`
  and `Scope::from_root` iterators (#1413)

### Added

- **registry**: `SpanRef::scope` method, which returns a leaf-to-root
  `Iterator` including the leaf span (#1413)
- **registry**: `Scope::from_root` method, which reverses the `scope`
  iterator to iterate root-to-leaf (#1413)
- **registry**: `Context::event_span` method, which looks up the parent
  span of an event (#1434)
- **registry**: `Context::event_scope` method, returning a `Scope`
  iterator over the span scope of an event (#1434)
- **fmt**: `MakeWriter::make_writer_for` method, which allows returning
  a different writer based on a span or event's metadata (#1141)
- **fmt**: `MakeWriterExt` trait, with `with_max_level`,
  `with_min_level`, `with_filter`, `and`, and `or_else` combinators
  (#1274)
- **fmt**: `MakeWriter` implementation for `Arc<W> where &W: io::Write`
  (#1274)

Thanks to @teozkr and @Folyd for contributing to this release!
hawkw added a commit that referenced this pull request Oct 22, 2021
## Motivation

`tracing-subscriber` currently contains some APIs that were deprecated
in the v0.2.x series:
- `fmt::LayerBuilder`, which is now a type alias for `fmt::Layer` (as
  the `Layer` type can expose all the same methods as the builder)
- `registry::SpanRef::parent_id`, which doesn't play nice with per-layer
  filtering,
- `fmt::Layer::inherit_fields`, which no longer does anything as it's
  now the default behavior
- `fmt::Layer::on_event`, which was renamed to `fmt_event`
- the `SpanRef::parents` and `layer::Context::scope` iterators, which
  were replaced by the APIs added in #1431 and #1434

Prior to releasing v0.3, the deprecated APIs should be removed.

## Solution

This branch deletes the deprecated APIs, with the exception of
`SpanRef::parents` and `Context::scope` (which were already removed in
240d11a).

Signed-off-by: Eliza Weisman <[email protected]>
hawkw added a commit that referenced this pull request Oct 22, 2021
# 0.3.0 (Oct 22, 2021)

This is a breaking release of `tracing-subscriber`. The primary breaking
change in this release is the removal of the dependency on the [`chrono`
crate], due to [RUSTSEC-2020-0159]. To replace `chrono`, support is
added for formatting timestamps using the [`time` crate] instead.

In addition, this release includes a number of other breaking API
changes, such as adding (limited) support for `#![no_std]` targets,
removing previously deprecated APIs, and more.

### Breaking Changes

- Removed APIs deprecated in the v0.2.x release series.
- Renamed `Layer::new_span` to `Layer::on_new_span` ([#1674])
- Removed `Layer` impl for `Arc<L: Layer<S>>` and `Arc<dyn Layer<S> +
  ...>` ([#1649])
- Replaced the [`chrono` crate] with the [`time` crate] for timestamp
  formatting, to resolve [RUSTSEC-2020-0159] ([#1646])
- Removed `json` and `env-filter` from default features. They must now
  be enabled explictly ([#1647])
- Changed `FormatEvent::format_event` and `FormatFields::format_fields`
  trait methods to take a `Writer` type, rather than a `&mut dyn
  fmt::Write` trait object ([#1661])
- Changed the signature of the `MakeWriter` trait by adding a lifetime
  parameter ([#781])
  ### Changed

- **layer**: Renamed `Layer::new_span` to `Layer::on_new_span` ([#1674])
- **fmt**: Changed `FormatEvent::format_event` and
  `FormatFields::format_fields` trait methods to take a `Writer` type,
  rather than a `&mut dyn fmt::Write` trait object ([#1661])
- **json**, **env-filter**: `json` and `env-filter` feature flags are no
  longer enabled by default ([#1647])
  ### Removed

- Removed deprecated `CurrentSpan` type ([#1320])
- **registry**: Removed deprecated `SpanRef::parents` iterator, replaced
  by `SpanRef::scope` in [#1431] ([#1648)])
- **layer**: Removed deprecated `Context::scope` iterator, replaced by
  `Context::span_scope` and `Context::event_scope` in [#1431] and
  [#1434] ([#1648)])
- **layer**: Removed `Layer` impl for `Arc<L: Layer<S>>` and `Arc<dyn
  Layer<S> + ...>`. These interfere with per-layer filtering. ([#1649])
- **fmt**: Removed deprecated `LayerBuilder` type ([#1673])
- **fmt**: Removed `fmt::Layer::on_event` (renamed to
  `fmt::Layer::fmt_event`) ([#1673])
- **fmt**, **chrono**: Removed the `chrono` feature flag and APIs for
  using the [`chrono` crate] for timestamp formatting ([#1646])
  ### Added

- **fmt**, **time**: `LocalTime` and `UtcTime` types for formatting
  timestamps using the [`time` crate] ([#1646])
- **fmt**: Added a lifetime parameter to the `MakeWriter` trait,
  allowing it to return a borrowed writer. This enables implementations
  of `MakeWriter` for types such as `Mutex<T: io::Write>` and
  `std::fs::File`. ([#781])
- **env-filter**: Documentation improvements ([#1637])
- Support for some APIs on `#![no_std]` targets, by disabling the `std`
  feature flag ([#1660])

Thanks to @Folyd and @nmathewson for contributing to this release!

[#1320]: #1320
[#1673]: #1673
[#1674]: #1674
[#1646]: #1646
[#1647]: #1647
[#1648]: #1648
[#1649]: #1649
[#1660]: #1660
[#1661]: #1661
[#1431]: #1431
[#1434]: #1434
[#781]: #781

[`chrono` crate]: https://crates.io/crates/chrono
[`time` crate]: https://crates.io/crates/time
[RUSTSEC-2020-0159]: https://rustsec.org/advisories/RUSTSEC-2020-0159.html
hawkw added a commit that referenced this pull request Oct 22, 2021
# 0.3.0 (Oct 22, 2021)

This is a breaking release of `tracing-subscriber`. The primary breaking
change in this release is the removal of the dependency on the [`chrono`
crate], due to [RUSTSEC-2020-0159]. To replace `chrono`, support is
added for formatting timestamps using the [`time` crate] instead.

In addition, this release includes a number of other breaking API
changes, such as adding (limited) support for `#![no_std]` targets,
removing previously deprecated APIs, and more.

### Breaking Changes

- Removed APIs deprecated in the v0.2.x release series.
- Renamed `Layer::new_span` to `Layer::on_new_span` ([#1674])
- Removed `Layer` impl for `Arc<L: Layer<S>>` and `Arc<dyn Layer<S> +
  ...>` ([#1649])
- Replaced the [`chrono` crate] with the [`time` crate] for timestamp
  formatting, to resolve [RUSTSEC-2020-0159] ([#1646])
- Removed `json` and `env-filter` from default features. They must now
  be enabled explictly ([#1647])
- Changed `FormatEvent::format_event` and `FormatFields::format_fields`
  trait methods to take a `Writer` type, rather than a `&mut dyn
  fmt::Write` trait object ([#1661])
- Changed the signature of the `MakeWriter` trait by adding a lifetime
  parameter ([#781])
  ### Changed

- **layer**: Renamed `Layer::new_span` to `Layer::on_new_span` ([#1674])
- **fmt**: Changed `FormatEvent::format_event` and
  `FormatFields::format_fields` trait methods to take a `Writer` type,
  rather than a `&mut dyn fmt::Write` trait object ([#1661])
- **json**, **env-filter**: `json` and `env-filter` feature flags are no
  longer enabled by default ([#1647])
  ### Removed

- Removed deprecated `CurrentSpan` type ([#1320])
- **registry**: Removed deprecated `SpanRef::parents` iterator, replaced
  by `SpanRef::scope` in [#1431] ([#1648)])
- **layer**: Removed deprecated `Context::scope` iterator, replaced by
  `Context::span_scope` and `Context::event_scope` in [#1431] and
  [#1434] ([#1648)])
- **layer**: Removed `Layer` impl for `Arc<L: Layer<S>>` and `Arc<dyn
  Layer<S> + ...>`. These interfere with per-layer filtering. ([#1649])
- **fmt**: Removed deprecated `LayerBuilder` type ([#1673])
- **fmt**: Removed `fmt::Layer::on_event` (renamed to
  `fmt::Layer::fmt_event`) ([#1673])
- **fmt**, **chrono**: Removed the `chrono` feature flag and APIs for
  using the [`chrono` crate] for timestamp formatting ([#1646])
  ### Added

- **fmt**, **time**: `LocalTime` and `UtcTime` types for formatting
  timestamps using the [`time` crate] ([#1646])
- **fmt**: Added a lifetime parameter to the `MakeWriter` trait,
  allowing it to return a borrowed writer. This enables implementations
  of `MakeWriter` for types such as `Mutex<T: io::Write>` and
  `std::fs::File`. ([#781])
- **env-filter**: Documentation improvements ([#1637])
- Support for some APIs on `#![no_std]` targets, by disabling the `std`
  feature flag ([#1660])

Thanks to @Folyd and @nmathewson for contributing to this release!

[#1320]: #1320
[#1673]: #1673
[#1674]: #1674
[#1646]: #1646
[#1647]: #1647
[#1648]: #1648
[#1649]: #1649
[#1660]: #1660
[#1661]: #1661
[#1431]: #1431
[#1434]: #1434
[#781]: #781

[`chrono` crate]: https://crates.io/crates/chrono
[`time` crate]: https://crates.io/crates/time
[RUSTSEC-2020-0159]: https://rustsec.org/advisories/RUSTSEC-2020-0159.html

Signed-off-by: Eliza Weisman <[email protected]>
davidbarsky pushed a commit to tokio-rs/tracing-opentelemetry that referenced this pull request Mar 21, 2023
# 0.3.0 (Oct 22, 2021)

This is a breaking release of `tracing-subscriber`. The primary breaking
change in this release is the removal of the dependency on the [`chrono`
crate], due to [RUSTSEC-2020-0159]. To replace `chrono`, support is
added for formatting timestamps using the [`time` crate] instead.

In addition, this release includes a number of other breaking API
changes, such as adding (limited) support for `#![no_std]` targets,
removing previously deprecated APIs, and more.

### Breaking Changes

- Removed APIs deprecated in the v0.2.x release series.
- Renamed `Layer::new_span` to `Layer::on_new_span` ([#1674])
- Removed `Layer` impl for `Arc<L: Layer<S>>` and `Arc<dyn Layer<S> +
  ...>` ([#1649])
- Replaced the [`chrono` crate] with the [`time` crate] for timestamp
  formatting, to resolve [RUSTSEC-2020-0159] ([#1646])
- Removed `json` and `env-filter` from default features. They must now
  be enabled explictly ([#1647])
- Changed `FormatEvent::format_event` and `FormatFields::format_fields`
  trait methods to take a `Writer` type, rather than a `&mut dyn
  fmt::Write` trait object ([#1661])
- Changed the signature of the `MakeWriter` trait by adding a lifetime
  parameter ([#781])
  ### Changed

- **layer**: Renamed `Layer::new_span` to `Layer::on_new_span` ([#1674])
- **fmt**: Changed `FormatEvent::format_event` and
  `FormatFields::format_fields` trait methods to take a `Writer` type,
  rather than a `&mut dyn fmt::Write` trait object ([#1661])
- **json**, **env-filter**: `json` and `env-filter` feature flags are no
  longer enabled by default ([#1647])
  ### Removed

- Removed deprecated `CurrentSpan` type ([#1320])
- **registry**: Removed deprecated `SpanRef::parents` iterator, replaced
  by `SpanRef::scope` in [#1431] ([#1648)])
- **layer**: Removed deprecated `Context::scope` iterator, replaced by
  `Context::span_scope` and `Context::event_scope` in [#1431] and
  [#1434] ([#1648)])
- **layer**: Removed `Layer` impl for `Arc<L: Layer<S>>` and `Arc<dyn
  Layer<S> + ...>`. These interfere with per-layer filtering. ([#1649])
- **fmt**: Removed deprecated `LayerBuilder` type ([#1673])
- **fmt**: Removed `fmt::Layer::on_event` (renamed to
  `fmt::Layer::fmt_event`) ([#1673])
- **fmt**, **chrono**: Removed the `chrono` feature flag and APIs for
  using the [`chrono` crate] for timestamp formatting ([#1646])
  ### Added

- **fmt**, **time**: `LocalTime` and `UtcTime` types for formatting
  timestamps using the [`time` crate] ([#1646])
- **fmt**: Added a lifetime parameter to the `MakeWriter` trait,
  allowing it to return a borrowed writer. This enables implementations
  of `MakeWriter` for types such as `Mutex<T: io::Write>` and
  `std::fs::File`. ([#781])
- **env-filter**: Documentation improvements ([#1637])
- Support for some APIs on `#![no_std]` targets, by disabling the `std`
  feature flag ([#1660])

Thanks to @Folyd and @nmathewson for contributing to this release!

[#1320]: tokio-rs/tracing#1320
[#1673]: tokio-rs/tracing#1673
[#1674]: tokio-rs/tracing#1674
[#1646]: tokio-rs/tracing#1646
[#1647]: tokio-rs/tracing#1647
[#1648]: tokio-rs/tracing#1648
[#1649]: tokio-rs/tracing#1649
[#1660]: tokio-rs/tracing#1660
[#1661]: tokio-rs/tracing#1661
[#1431]: tokio-rs/tracing#1431
[#1434]: tokio-rs/tracing#1434
[#781]: tokio-rs/tracing#781

[`chrono` crate]: https://crates.io/crates/chrono
[`time` crate]: https://crates.io/crates/time
[RUSTSEC-2020-0159]: https://rustsec.org/advisories/RUSTSEC-2020-0159.html

Signed-off-by: Eliza Weisman <[email protected]>
kaffarell pushed a commit to kaffarell/tracing that referenced this pull request May 22, 2024
…o-rs#1434)

## Motivation

Fixes tokio-rs#1428

## Solution

Adds a new `Context::event_span` method as proposed in the issue.

No existing formatters were changed to use it yet, that seems like a
secondary issue (especially if they already work correctly).
kaffarell pushed a commit to kaffarell/tracing that referenced this pull request May 22, 2024
# 0.2.19 (June 25, 2021)

### Deprecated

- **registry**: `SpanRef::parents`, `SpanRef::from_root`, and
  `Context::scope` iterators, which are replaced by new `SpanRef::scope`
  and `Scope::from_root` iterators (tokio-rs#1413)

### Added

- **registry**: `SpanRef::scope` method, which returns a leaf-to-root
  `Iterator` including the leaf span (tokio-rs#1413)
- **registry**: `Scope::from_root` method, which reverses the `scope`
  iterator to iterate root-to-leaf (tokio-rs#1413)
- **registry**: `Context::event_span` method, which looks up the parent
  span of an event (tokio-rs#1434)
- **registry**: `Context::event_scope` method, returning a `Scope`
  iterator over the span scope of an event (tokio-rs#1434)
- **fmt**: `MakeWriter::make_writer_for` method, which allows returning
  a different writer based on a span or event's metadata (tokio-rs#1141)
- **fmt**: `MakeWriterExt` trait, with `with_max_level`,
  `with_min_level`, `with_filter`, `and`, and `or_else` combinators
  (tokio-rs#1274)
- **fmt**: `MakeWriter` implementation for `Arc<W> where &W: io::Write`
  (tokio-rs#1274)

Thanks to @teozkr and @Folyd for contributing to this release!
kaffarell pushed a commit to kaffarell/tracing that referenced this pull request May 22, 2024
## Motivation

`tracing-subscriber` currently contains some APIs that were deprecated
in the v0.2.x series:
- `fmt::LayerBuilder`, which is now a type alias for `fmt::Layer` (as
  the `Layer` type can expose all the same methods as the builder)
- `registry::SpanRef::parent_id`, which doesn't play nice with per-layer
  filtering,
- `fmt::Layer::inherit_fields`, which no longer does anything as it's
  now the default behavior
- `fmt::Layer::on_event`, which was renamed to `fmt_event`
- the `SpanRef::parents` and `layer::Context::scope` iterators, which
  were replaced by the APIs added in tokio-rs#1431 and tokio-rs#1434

Prior to releasing v0.3, the deprecated APIs should be removed.

## Solution

This branch deletes the deprecated APIs, with the exception of
`SpanRef::parents` and `Context::scope` (which were already removed in
240d11a).

Signed-off-by: Eliza Weisman <[email protected]>
kaffarell pushed a commit to kaffarell/tracing that referenced this pull request May 22, 2024
# 0.3.0 (Oct 22, 2021)

This is a breaking release of `tracing-subscriber`. The primary breaking
change in this release is the removal of the dependency on the [`chrono`
crate], due to [RUSTSEC-2020-0159]. To replace `chrono`, support is
added for formatting timestamps using the [`time` crate] instead.

In addition, this release includes a number of other breaking API
changes, such as adding (limited) support for `#![no_std]` targets,
removing previously deprecated APIs, and more.

### Breaking Changes

- Removed APIs deprecated in the v0.2.x release series.
- Renamed `Layer::new_span` to `Layer::on_new_span` ([tokio-rs#1674])
- Removed `Layer` impl for `Arc<L: Layer<S>>` and `Arc<dyn Layer<S> +
  ...>` ([tokio-rs#1649])
- Replaced the [`chrono` crate] with the [`time` crate] for timestamp
  formatting, to resolve [RUSTSEC-2020-0159] ([tokio-rs#1646])
- Removed `json` and `env-filter` from default features. They must now
  be enabled explictly ([tokio-rs#1647])
- Changed `FormatEvent::format_event` and `FormatFields::format_fields`
  trait methods to take a `Writer` type, rather than a `&mut dyn
  fmt::Write` trait object ([tokio-rs#1661])
- Changed the signature of the `MakeWriter` trait by adding a lifetime
  parameter ([tokio-rs#781])
  ### Changed

- **layer**: Renamed `Layer::new_span` to `Layer::on_new_span` ([tokio-rs#1674])
- **fmt**: Changed `FormatEvent::format_event` and
  `FormatFields::format_fields` trait methods to take a `Writer` type,
  rather than a `&mut dyn fmt::Write` trait object ([tokio-rs#1661])
- **json**, **env-filter**: `json` and `env-filter` feature flags are no
  longer enabled by default ([tokio-rs#1647])
  ### Removed

- Removed deprecated `CurrentSpan` type ([tokio-rs#1320])
- **registry**: Removed deprecated `SpanRef::parents` iterator, replaced
  by `SpanRef::scope` in [tokio-rs#1431] ([tokio-rs#1648)])
- **layer**: Removed deprecated `Context::scope` iterator, replaced by
  `Context::span_scope` and `Context::event_scope` in [tokio-rs#1431] and
  [tokio-rs#1434] ([tokio-rs#1648)])
- **layer**: Removed `Layer` impl for `Arc<L: Layer<S>>` and `Arc<dyn
  Layer<S> + ...>`. These interfere with per-layer filtering. ([tokio-rs#1649])
- **fmt**: Removed deprecated `LayerBuilder` type ([tokio-rs#1673])
- **fmt**: Removed `fmt::Layer::on_event` (renamed to
  `fmt::Layer::fmt_event`) ([tokio-rs#1673])
- **fmt**, **chrono**: Removed the `chrono` feature flag and APIs for
  using the [`chrono` crate] for timestamp formatting ([tokio-rs#1646])
  ### Added

- **fmt**, **time**: `LocalTime` and `UtcTime` types for formatting
  timestamps using the [`time` crate] ([tokio-rs#1646])
- **fmt**: Added a lifetime parameter to the `MakeWriter` trait,
  allowing it to return a borrowed writer. This enables implementations
  of `MakeWriter` for types such as `Mutex<T: io::Write>` and
  `std::fs::File`. ([tokio-rs#781])
- **env-filter**: Documentation improvements ([tokio-rs#1637])
- Support for some APIs on `#![no_std]` targets, by disabling the `std`
  feature flag ([tokio-rs#1660])

Thanks to @Folyd and @nmathewson for contributing to this release!

[tokio-rs#1320]: tokio-rs#1320
[tokio-rs#1673]: tokio-rs#1673
[tokio-rs#1674]: tokio-rs#1674
[tokio-rs#1646]: tokio-rs#1646
[tokio-rs#1647]: tokio-rs#1647
[tokio-rs#1648]: tokio-rs#1648
[tokio-rs#1649]: tokio-rs#1649
[tokio-rs#1660]: tokio-rs#1660
[tokio-rs#1661]: tokio-rs#1661
[tokio-rs#1431]: tokio-rs#1431
[tokio-rs#1434]: tokio-rs#1434
[tokio-rs#781]: tokio-rs#781

[`chrono` crate]: https://crates.io/crates/chrono
[`time` crate]: https://crates.io/crates/time
[RUSTSEC-2020-0159]: https://rustsec.org/advisories/RUSTSEC-2020-0159.html

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