anchor.diff:  
   # TODO(chizhg): remove it once we replace with kntest in the places where this tool is used
   # Install our own tools
  -RUN go get knative.dev/pkg/testutils/junithelper
  +RUN GO111MODULE=on go get knative.dev/pkg/testutils/junithelper@release-0.17
   
   # And our scripts
   ENV SCRIPTS /scripts
  
positive.code: RUN GO111MODULE=on go get github.com/google/ko/cmd/ko@v0.5.1
  RUN GO111MODULE=on go get github.com/boz/kail/cmd/kail
  RUN go get -u github.com/golang/dep/cmd/dep
  # TODO(chizhg): remove once all repos have been updated to use gotestsum.
  RUN go get -u github.com/jstemmer/go-junit-report
  RUN GO111MODULE=on go get -u gotest.tools/gotestsum
  RUN GO111MODULE=on go get -u github.com/raviqqe/liche@v0.0.0-20200229003944-f57a5d1c5be4  # stable liche version for checking md links
  
negative.code: RUN docker-credential-gcr configure-docker
  
  # Replace kubectl with a working version
  # TODO(chizhg): https://github.com/knative/test-infra/issues/1858 was fixed in release-0.16, remove the pin after Knative release-0.19 is cut.
  ARG KUBECTL_VERSION=v1.17.4
  RUN rm -f "$(which kubectl)" && \
      wget "https://storage.googleapis.com/kubernetes-release/release/${KUBECTL_VERSION}/bin/linux/amd64/kubectl" -O /usr/local/bin/kubectl && \
  