Re-enable asmjs CI

Author: JohnTitor

ci/azure.yml

@@ -46,10 +46,8 @@ jobs:
           TARGET: arm-unknown-linux-gnueabihf
         arm-unknown-linux-musleabihf:
           TARGET: arm-unknown-linux-musleabihf
-        # Disabled because currently broken, see:
-        # https://github.com/rust-lang/libc/issues/1591
-        # asmjs-unknown-emscripten:
-        #  TARGET: asmjs-unknown-emscripten
+        asmjs-unknown-emscripten:
+          TARGET: asmjs-unknown-emscripten
         i686-linux-android:
           TARGET: i686-linux-android
         i686-unknown-linux-musl:

ci/docker/asmjs-unknown-emscripten/Dockerfile

@@ -1,6 +1,11 @@
 FROM ubuntu:20.04
 
-RUN apt-get update && \
+# This is a workaround to avoid the interaction with tzdata.
+ENV DEBIAN_FRONTEND=noninteractive
+ENV TZ=America/New_York
+
+RUN apt-get update
+RUN apt-get install -y --no-install-recommends tzdata
     apt-get install -y --no-install-recommends \
     ca-certificates \
     curl \
@@ -12,6 +17,8 @@ RUN apt-get update && \
     python3-distutils \
     xz-utils
 
+RUN ln -s /usr/bin/python3 /usr/bin/python & \
+    ln -s /usr/bin/pip3 /usr/bin/pip
 COPY emscripten.sh /
 RUN bash /emscripten.sh