Suppress error messages from test, update GitHub workflows

Author: duncanpo

.github/workflows/build.yml

@@ -38,7 +38,7 @@ jobs:
             - name: Build OpenTelemetry-cpp
               run:
                   cd opentelemetry-cpp
-                  cmake -S . -B build -DCMAKE_BUILD_TYPE=Release -DCMAKE_POSITION_INDEPENDENT_CODE=ON -DCMAKE_CXX_STANDARD=20 -DWITH_OTLP=TRUE -DWITH_OTLP_HTTP=TRUE -DWITH_OTLP_GRPC=TRUE -DOPENTELEMETRY_INSTALL=ON -DCMAKE_TOOLCHAIN_FILE=../vcpkg/scripts/buildsystems/vcpkg.cmake
+                  cmake -S . -B build -DCMAKE_BUILD_TYPE=Release -DCMAKE_POSITION_INDEPENDENT_CODE=ON -DCMAKE_CXX_STANDARD=20 -DWITH_OTLP_HTTP=TRUE -DWITH_OTLP_GRPC=TRUE -DOPENTELEMETRY_INSTALL=ON -DCMAKE_TOOLCHAIN_FILE=../vcpkg/scripts/buildsystems/vcpkg.cmake
                   cmake --build build --config Release --target all
                   cmake --install build --prefix ${{ env.OPENTELEMETRY_CPP_INSTALL }}
             - name: Build OpenTelemetry-Matlab

test/tcontextPropagation.m

@@ -145,6 +145,7 @@ function testInjectContext(testCase)
 % inject
 carrier = opentelemetry.context.propagation.injectContext();
 headers = carrier.Headers;
+endSpan(sp);
 
 % verify the injected traceparent contains the trace and span IDs
 verifySubstring(testCase, headers(1,2), spancontext.TraceId);
@@ -378,6 +379,7 @@ function testInjectContextComposite(testCase)
 % inject
 carrier = opentelemetry.context.propagation.injectContext();
 headers = carrier.Headers;
+endSpan(sp);
 
 % verify the baggage header
 baggagerow = find(headers(:,1) == "baggage");

test/ttrace.m

@@ -518,6 +518,10 @@ function testLinks(testCase)
 
 endSpan(sp4);
 
+% end the rest of the spans
+endSpan(sp1);
+endSpan(sp3);
+
 results = readJsonResults(testCase);
 
 % one link, no attributes