fix: degrade MSRV to 1.75.0 (#64)

Author: andylokandy

.github/workflows/ci.yml

@@ -16,7 +16,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ windows-latest, macos-latest, ubuntu-latest ]
-        rust: [ "1.81", stable, nightly ]
+        rust: [ "1.75", stable, nightly ]
     env:
       RUST_BACKTRACE: 1
     steps:

.gitignore

@@ -3,4 +3,3 @@
 
 .editorconfig
 .idea
-Cargo.lock

CHANGELOG.md

@@ -6,7 +6,6 @@
 
 - Add `TraceId::random()` and `SpanId::random()`.
 - Add `FromStr`, `Display`, and `serde` support for `TraceId`, `SpanId`.
-- Bump MSRV 1.81.0.
 
 ## v0.7.6