Remove env_logger from workspace.

- We don't want to include it in the top level workspace as it interferes
  with MSRV, and doesn't provide benefit.
- For MSRV check we just run check.
- Also bump to 0.11 in example.

Relates #1546,#1554

Author: hdost

.github/workflows/ci.yml

@@ -93,9 +93,9 @@ jobs:
       run: ./scripts/patch_dependencies.sh
     - name: Run tests
       run: cargo --version &&
-        cargo test --manifest-path=opentelemetry/Cargo.toml --features trace,metrics,testing &&
-        cargo test --manifest-path=opentelemetry-jaeger/Cargo.toml --features rt-tokio &&
-        cargo test --manifest-path=opentelemetry-zipkin/Cargo.toml
+        cargo check --lib --manifest-path=opentelemetry/Cargo.toml --features trace,metrics,testing &&
+        cargo check --lib --manifest-path=opentelemetry-jaeger/Cargo.toml --features rt-tokio &&
+        cargo check --lib --manifest-path=opentelemetry-zipkin/Cargo.toml
   cargo-deny:
     runs-on: ubuntu-latest
     continue-on-error: true # Prevent sudden announcement of a new advisory from failing ci

Cargo.toml

@@ -21,7 +21,6 @@ debug = 1
 async-std = "1.10"
 async-trait = "0.1"
 bytes = "1"
-env_logger = { version = "0.10", default-features = false } # env_logger requires a newer MSRV
 futures-core = "0.3"
 futures-executor = "0.3"
 futures-util = { version = "0.3", default-features = false }

opentelemetry-jaeger/examples/actix-udp/Cargo.toml

@@ -11,4 +11,4 @@ opentelemetry-jaeger = { path = "../.." }
 opentelemetry_sdk = { path = "../../../opentelemetry-sdk" }
 actix-web = "4.1"
 actix-service = "2"
-env_logger = "0.10.0"
+env_logger = "0.11.0"