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chore: bump MSRV to 1.56 (#2546)

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As part of upgrading syn to 2.0 (e.g.,
https://github.com/tokio-rs/tracing/pull/2516), we need to bump the MSRV
to 1.56. As part of this PR, I've:
- Updated the text descriptions of what would be an in-policy MSRV bump
  to use more recent versions of rustc. The _niceness_ of said version
  numbers are purely coincidental.
- I've removed some of the exceptions made in CI.yml in order to support
  some crates with a higher MSRV.
This commit is contained in:
David Barsky 2023-04-05 14:19:55 -04:00 committed by Eliza Weisman
parent 77c4af7425
commit 33a1c6fe45
1 changed files with 4 additions and 4 deletions
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8
tracing-mock/README.md
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@ -29,7 +29,7 @@ structured, event-based diagnostic information. `tracing-mock` provides
tools for making assertions about what `tracing` diagnostics are emitted
by code under test.
*Compiler support: [requires `rustc` 1.49+][msrv]*
*Compiler support: [requires `rustc` 1.56+][msrv]*
[msrv]: #supported-rust-versions
@ -154,14 +154,14 @@ handle.assert_finished();
## Supported Rust Versions
Tracing is built against the latest stable release. The minimum supported
version is 1.49. The current Tracing version is not guaranteed to build on Rust
version is 1.56. The current Tracing version is not guaranteed to build on Rust
versions earlier than the minimum supported version.
Tracing follows the same compiler support policies as the rest of the Tokio
project. The current stable Rust compiler and the three most recent minor
versions before it will always be supported. For example, if the current stable
compiler version is 1.45, the minimum supported version will not be increased
past 1.42, three minor versions prior. Increasing the minimum supported compiler
compiler version is 1.69, the minimum supported version will not be increased
past 1.66, three minor versions prior. Increasing the minimum supported compiler
version is not considered a semver breaking change as long as doing so complies
with this policy.