Fix inbound fuzzing build

Nightly builds were broken when the fuzzer change landed, so we missed
the regression. This change fixes the inbound fuzzer build. It also
updates the devcontainer build to include a nightly toolchain with
cargo-fuzz.

Signed-off-by: Oliver Gould <ver@buoyant.io>

.devcontainer/Dockerfile

@@ -18,6 +18,12 @@ ARG YQ_VERSION=v4.2.0
 RUN curl --proto '=https' --tlsv1.3 -vsSfLo /usr/local/bin/yq "https://github.com/mikefarah/yq/releases/download/${YQ_VERSION}/yq_linux_amd64" \
     && chmod +x /usr/local/bin/yq
 
+FROM docker.io/rust:${RUST_VERSION}-bullseye as nightly
+RUN rustup toolchain add nightly
+
+FROM nightly as fuzz
+RUN cargo +nightly install cargo-fuzz
+
 #
 # Main image
 #
@@ -63,6 +69,8 @@ COPY --from=cargo-deny /usr/local/bin/cargo-deny /usr/local/bin/cargo-deny
 COPY --from=k3d /usr/local/bin/k3d /usr/local/bin/k3d
 COPY --from=kubectl /usr/local/bin/kubectl /usr/local/bin/kubectl
 COPY --from=yq /usr/local/bin/yq /usr/local/bin/yq
+COPY --from=nightly /usr/local/rustup/toolchains/nightly-x86_64-unknown-linux-gnu /usr/local/rustup/toolchains/nightly-x86_64-unknown-linux-gnu
+COPY --from=fuzz /usr/local/cargo/bin/cargo-fuzz /usr/local/cargo/bin/cargo-fuzz
 
 ENTRYPOINT ["/usr/local/share/docker-init.sh"]
 CMD ["sleep", "infinity"]

linkerd/app/inbound/src/http.rs

@@ -219,6 +219,7 @@ pub mod fuzz {
                         kind: "server".into(),
                         name: "testsaz".into(),
                     }],
+                    kind: "server".into(),
                     name: "testsrv".into(),
                 },
             );
@@ -228,7 +229,10 @@ pub mod fuzz {
 
     impl svc::Param<policy::ServerLabel> for Target {
         fn param(&self) -> policy::ServerLabel {
-            policy::ServerLabel("testsrv".into())
+            policy::ServerLabel {
+                kind: "server".into(),
+                name: "testsrv".into(),
+            }
         }
     }