subscriber: replace unmaintained ansi_term with nu-ansi-term (tok…

…io-rs#2287)

This increases the MSRV of `tracing-subscriber` to 1.50+.

## Motivation

[ansi_term] last time update is over 2 years ago, use
nushell team forked [nu-ansi-term] instead

## Solution

Use [nu-ansi-term].

Closes tokio-rs#2040

[nu-ansi-term]: https://github.com/nushell/nu-ansi-term
[ansi_term]: https://github.com/ogham/rust-ansi-term

.github/workflows/CI.yml

@@ -212,50 +212,38 @@ jobs:
     name: "cargo check (+MSRV -Zminimal-versions)"
     needs: check
     runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v3
-    - name: "install Rust ${{ env.MSRV }}"
-      uses: actions-rs/toolchain@v1
-      with:
-        toolchain: ${{ env.MSRV }}
-        profile: minimal
-    - name: "install Rust nightly"
-      uses: actions-rs/toolchain@v1
-      with:
-        toolchain: nightly
-        profile: minimal
-    - name: Select minimal versions
-      uses: actions-rs/cargo@v1
-      with:
-        command: update
-        args: -Z minimal-versions
-        toolchain: nightly
-    - name: Check
-      uses: actions-rs/cargo@v1
-      with:
-        command: check
-        # skip the following crates:
-        # - tracing-appender, as it has its own MSRV.
-        #   TODO(eliza): remove this when appender is on the same MSRV as
-        #   everything else
-        # - the examples, as they are not published & we don't care about
-        #   MSRV support for them.
-        # - tracing-futures, as it depends on ancient tokio versions.
-        #   TODO(eliza): remove this when the ancient tokio deps are dropped
-        args: >-
-          --workspace --all-features --locked
-          --exclude=tracing-appender
-          --exclude=tracing-examples
-          --exclude=tracing-futures
-          --exclude=tracing-opentelemetry
-        toolchain: ${{ env.MSRV }}
-
-  # TODO: remove this once tracing's MSRV is bumped.
-  check-msrv-appender:
-    # Run `cargo check` on our minimum supported Rust version (1.53.0).
-    name: "cargo check (tracing-appender MSRV)"
-    needs: check
-    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        # cargo hack --feature-powerset will have a significant permutation
+        # number, we can't just use --all as it increases the runtime
+        # further than what we would like to
+        subcrate:
+        - tracing-appender
+        - tracing-attributes
+        - tracing-core
+        - tracing-futures
+        - tracing-log
+        - tracing-macros
+        - tracing-serde
+        - tracing-subscriber
+        - tracing-tower
+        - tracing-opentelemetry
+        - tracing
+        toolchain:
+        - 1.49.0
+        - stable
+        # TODO(eliza): remove this when appender is on the same MSRV.
+        #              same for tracing subscriber
+        exclude:
+        - subcrate: tracing-appender
+          toolchain: 1.49.0
+        - subcrate: tracing-subscriber
+          toolchain: 1.49.0
+        include:
+        - subcrate: tracing-appender
+          toolchain: 1.53.0
+        - subcrate: tracing-subscriber
+          toolchain: 1.50.0
     steps:
     - uses: actions/checkout@v3
     - name: "install Rust ${{ env.APPENDER_MSRV }}"