Emscripten Targets Fail with Container Images

[Alexhuszagh]

The container images are currently disabled on CI, however, they can be built. Unfortunately, attempting to do so produces:

error: linking with `emcc` failed: exit status: 1
  |
  = note: "emcc" "-s" "EXPORTED_FUNCTIONS=[\"_main\",\"_rust_eh_personality\"]" "/target/asmjs-unknown-emscripten/debug/deps/hellopp-4c6a3d6639ab24e0.1hwx1m4z77xgklfq.rcgu.o" "/target/asmjs-unknown-emscripten/debug/deps/hellopp-4c6a3d6639ab24e0.3olwem368bbcwnj6.rcgu.o" "/target/asmjs-unknown-emscripten/debug/deps/hellopp-4c6a3d6639ab24e0.42n3za5etetqf8wx.rcgu.o" "/target/asmjs-unknown-emscripten/debug/deps/hellopp-4c6a3d6639ab24e0.4bj48wwofmo2wxg5.rcgu.o" "/target/asmjs-unknown-emscripten/debug/deps/hellopp-4c6a3d6639ab24e0.4jy695kpqag0b4sv.rcgu.o" "/target/asmjs-unknown-emscripten/debug/deps/hellopp-4c6a3d6639ab24e0.kbgciut9opgn29.rcgu.o" "/target/asmjs-unknown-emscripten/debug/deps/hellopp-4c6a3d6639ab24e0.weu0i7ngo91mteq.rcgu.o" "/target/asmjs-unknown-emscripten/debug/deps/hellopp-4c6a3d6639ab24e0.2i5frysyjwi3f262.rcgu.o" "-L" "/target/asmjs-unknown-emscripten/debug/deps" "-L" "/target/debug/deps" "-L" "/target/asmjs-unknown-emscripten/debug/build/hellopp-b9600f35a3c2512d/out" "-L" "/rust/lib/rustlib/asmjs-unknown-emscripten/lib" "-l" "hellopp" "-l" "stdc++" "/rust/lib/rustlib/asmjs-unknown-emscripten/lib/libstd-fb2df19118db310d.rlib" "/rust/lib/rustlib/asmjs-unknown-emscripten/lib/libpanic_unwind-8386994b3a04ec77.rlib" "/rust/lib/rustlib/asmjs-unknown-emscripten/lib/libstd_detect-a104798db2201fc8.rlib" "/rust/lib/rustlib/asmjs-unknown-emscripten/lib/librustc_demangle-757cd8e06e392eda.rlib" "/rust/lib/rustlib/asmjs-unknown-emscripten/lib/libhashbrown-2c8bb84b50611da0.rlib" "/rust/lib/rustlib/asmjs-unknown-emscripten/lib/librustc_std_workspace_alloc-4a1eb87aaa56a6c1.rlib" "/rust/lib/rustlib/asmjs-unknown-emscripten/lib/libunwind-83c302b3cc8b7dbd.rlib" "/rust/lib/rustlib/asmjs-unknown-emscripten/lib/libcfg_if-9ada802475829674.rlib" "/rust/lib/rustlib/asmjs-unknown-emscripten/lib/liblibc-f9e2f3b41c6b1d5a.rlib" "/rust/lib/rustlib/asmjs-unknown-emscripten/lib/liballoc-ecb78a21f9518a04.rlib" "/rust/lib/rustlib/asmjs-unknown-emscripten/lib/librustc_std_workspace_core-58e0792c29686b11.rlib" "/rust/lib/rustlib/asmjs-unknown-emscripten/lib/libcore-ebe70f38647fc4a3.rlib" "/rust/lib/rustlib/asmjs-unknown-emscripten/lib/libcompiler_builtins-2c31a05cb537eb0d.rlib" "-l" "c" "-s" "DISABLE_EXCEPTION_CATCHING=0" "-L" "/rust/lib/rustlib/asmjs-unknown-emscripten/lib" "-L" "/rust/lib/rustlib/asmjs-unknown-emscripten/lib/self-contained" "-o" "/target/asmjs-unknown-emscripten/debug/deps/hellopp-4c6a3d6639ab24e0.js" "-O0" "--memory-init-file" "0" "-g4" "-s" "DEFAULT_LIBRARY_FUNCS_TO_INCLUDE=[]" "-s" "ERROR_ON_UNDEFINED_SYMBOLS=1" "-s" "ASSERTIONS=1" "-s" "ABORTING_MALLOC=0" "-Wl,--fatal-warnings" "-s" "WASM=0"
  = note: emcc: warning: please replace -g4 with -gsource-map [-Wdeprecated]
          emcc: error: wasm2js does not support source maps yet (debug in wasm for now)

[Alexhuszagh]

Looks like we can re-enable asmjs-unknown-emscripten once rust-lang/rust#98216 lands on stable, as long as we ensure the compiler version is high enough.