[INFO] cloning repository https://github.com/ClarkWalker/rust_wasm_yew_demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ClarkWalker/rust_wasm_yew_demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FClarkWalker%2Frust_wasm_yew_demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FClarkWalker%2Frust_wasm_yew_demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3a38721892dabe6687fcde7fd4454adad5864913
[INFO] testing ClarkWalker/rust_wasm_yew_demo against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FClarkWalker%2Frust_wasm_yew_demo" "/workspace/builds/worker-50/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-50/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ClarkWalker/rust_wasm_yew_demo on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ClarkWalker/rust_wasm_yew_demo
[INFO] finished tweaking git repo https://github.com/ClarkWalker/rust_wasm_yew_demo
[INFO] tweaked toml for git repo https://github.com/ClarkWalker/rust_wasm_yew_demo written to /workspace/builds/worker-50/source/Cargo.toml
[INFO] crate git repo https://github.com/ClarkWalker/rust_wasm_yew_demo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded yew v0.4.0
[INFO] [stderr]   Downloaded cc v1.0.27
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4076cc2d5e7fc440369b056f2759b3ec9f22287f279df26cf0fa885d88478173
[INFO] running `Command { std: "docker" "start" "-a" "4076cc2d5e7fc440369b056f2759b3ec9f22287f279df26cf0fa885d88478173", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4076cc2d5e7fc440369b056f2759b3ec9f22287f279df26cf0fa885d88478173", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4076cc2d5e7fc440369b056f2759b3ec9f22287f279df26cf0fa885d88478173", kill_on_drop: false }`
[INFO] [stdout] 4076cc2d5e7fc440369b056f2759b3ec9f22287f279df26cf0fa885d88478173
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fd92d11afaa186cef417e2f41127e2b8f6e444e765d833c5b69f3b6585c22d4d
[INFO] running `Command { std: "docker" "start" "-a" "fd92d11afaa186cef417e2f41127e2b8f6e444e765d833c5b69f3b6585c22d4d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]    Compiling libc v0.2.45
[INFO] [stderr]    Compiling serde v1.0.82
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling cc v1.0.27
[INFO] [stderr]    Compiling autocfg v0.1.1
[INFO] [stderr]    Compiling itoa v0.4.3
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]    Compiling stdweb-internal-runtime v0.1.3
[INFO] [stderr]    Compiling byteorder v1.2.7
[INFO] [stderr]    Compiling base-x v0.2.3
[INFO] [stderr]    Compiling rustc-demangle v0.1.11
[INFO] [stderr]    Compiling discard v1.0.4
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling backtrace-sys v0.1.26
[INFO] [stderr]    Compiling backtrace v0.3.13
[INFO] [stderr]    Compiling stdweb v0.4.12
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]    Compiling serde_json v1.0.33
[INFO] [stderr]    Compiling bytes v0.4.11
[INFO] [stderr]    Compiling syn v0.15.23
[INFO] [stderr]    Compiling http v0.1.14
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling serde_derive v1.0.82
[INFO] [stderr]    Compiling failure v0.1.3
[INFO] [stderr]    Compiling stdweb-derive v0.5.1
[INFO] [stderr]    Compiling stdweb-internal-macros v0.2.4
[INFO] [stderr]    Compiling yew v0.4.0
[INFO] [stderr]    Compiling _2018_12_19_wasm_demo_02 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-m64" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-443462c6f8a2d278._2018_12_19_wasm_demo_02.841d06d3-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-443462c6f8a2d278._2018_12_19_wasm_demo_02.841d06d3-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-443462c6f8a2d278._2018_12_19_wasm_demo_02.841d06d3-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-443462c6f8a2d278._2018_12_19_wasm_demo_02.841d06d3-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-443462c6f8a2d278._2018_12_19_wasm_demo_02.841d06d3-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-443462c6f8a2d278._2018_12_19_wasm_demo_02.841d06d3-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-443462c6f8a2d278._2018_12_19_wasm_demo_02.841d06d3-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-443462c6f8a2d278._2018_12_19_wasm_demo_02.841d06d3-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-443462c6f8a2d278._2018_12_19_wasm_demo_02.841d06d3-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-443462c6f8a2d278._2018_12_19_wasm_demo_02.841d06d3-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-443462c6f8a2d278._2018_12_19_wasm_demo_02.841d06d3-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-443462c6f8a2d278._2018_12_19_wasm_demo_02.841d06d3-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-443462c6f8a2d278._2018_12_19_wasm_demo_02.841d06d3-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-443462c6f8a2d278._2018_12_19_wasm_demo_02.841d06d3-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-443462c6f8a2d278._2018_12_19_wasm_demo_02.841d06d3-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-443462c6f8a2d278._2018_12_19_wasm_demo_02.841d06d3-cgu.9.rcgu.o" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-443462c6f8a2d278.1l7xxk71j29m0bni.rcgu.o" "-Wl,--as-needed" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/target/debug/build/backtrace-sys-a3f88324a2cda255/out" "-L" "/opt/rustwide/rustup-home/toolchains/722e1797249a965b6335aebd65d777f917e498f1/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libyew-396f472bcc9b07f0.rlib" "/opt/rustwide/target/debug/deps/libstdweb-f8c3b4a03f4a01df.rlib" "/opt/rustwide/target/debug/deps/libdiscard-e8075c277bd827d9.rlib" "/opt/rustwide/target/debug/deps/libstdweb_internal_runtime-1df2eedc28a6f61b.rlib" "/opt/rustwide/target/debug/deps/libserde_json-7af781bc31fb66e6.rlib" "/opt/rustwide/target/debug/deps/libryu-15b6ba5feaf4bf0a.rlib" "/opt/rustwide/target/debug/deps/libserde-f24598223aac47a0.rlib" "/opt/rustwide/target/debug/deps/libhttp-305f96f6977f0130.rlib" "/opt/rustwide/target/debug/deps/libitoa-96ce37d5cfefc361.rlib" "/opt/rustwide/target/debug/deps/libfnv-8c5c165005b941da.rlib" "/opt/rustwide/target/debug/deps/libbytes-1b1de24e6327a55e.rlib" "/opt/rustwide/target/debug/deps/libiovec-630bd3dd5873a317.rlib" "/opt/rustwide/target/debug/deps/libbyteorder-d225e2dd059ea547.rlib" "/opt/rustwide/target/debug/deps/liblog-55b4103c168c913a.rlib" "/opt/rustwide/target/debug/deps/libfailure-ca8682905fb5998f.rlib" "/opt/rustwide/target/debug/deps/libbacktrace-3fb4470bb6cf1c1c.rlib" "/opt/rustwide/target/debug/deps/libbacktrace_sys-6fd9289a44762fe8.rlib" "/opt/rustwide/target/debug/deps/librustc_demangle-50b4a3becba04f26.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-4a0a4d007dac91ef.rlib" "/opt/rustwide/target/debug/deps/liblibc-13d8f9b5b14c5b4b.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/722e1797249a965b6335aebd65d777f917e498f1/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-29e5e596e889a0aa.rlib" "/opt/rustwide/rustup-home/toolchains/722e1797249a965b6335aebd65d777f917e498f1/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-1b145d9fcdc08832.rlib" "/opt/rustwide/rustup-home/toolchains/722e1797249a965b6335aebd65d777f917e498f1/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-5b037ee6b77e2ff0.rlib" "/opt/rustwide/rustup-home/toolchains/722e1797249a965b6335aebd65d777f917e498f1/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-9635a64fca0ebd28.rlib" "/opt/rustwide/rustup-home/toolchains/722e1797249a965b6335aebd65d777f917e498f1/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-a7574eb9bb7a8fc5.rlib" "/opt/rustwide/rustup-home/toolchains/722e1797249a965b6335aebd65d777f917e498f1/lib/rustlib/x86_64-unknown-linux-gnu/lib/libmemchr-f5fa1dc334dcaeeb.rlib" "/opt/rustwide/rustup-home/toolchains/722e1797249a965b6335aebd65d777f917e498f1/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-6ee570a898e75ef0.rlib" "/opt/rustwide/rustup-home/toolchains/722e1797249a965b6335aebd65d777f917e498f1/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-afb62f29a0815772.rlib" "/opt/rustwide/rustup-home/toolchains/722e1797249a965b6335aebd65d777f917e498f1/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd_detect-a632746535fd9988.rlib" "/opt/rustwide/rustup-home/toolchains/722e1797249a965b6335aebd65d777f917e498f1/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-25acc307bcb1d7b6.rlib" "/opt/rustwide/rustup-home/toolchains/722e1797249a965b6335aebd65d777f917e498f1/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-377721a625f6ace7.rlib" "/opt/rustwide/rustup-home/toolchains/722e1797249a965b6335aebd65d777f917e498f1/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-43c01431c8a4ee6f.rlib" "/opt/rustwide/rustup-home/toolchains/722e1797249a965b6335aebd65d777f917e498f1/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-5f74725679453254.rlib" "/opt/rustwide/rustup-home/toolchains/722e1797249a965b6335aebd65d777f917e498f1/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-2b35d8999819161d.rlib" "/opt/rustwide/rustup-home/toolchains/722e1797249a965b6335aebd65d777f917e498f1/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-a81f2980c3f58cf2.rlib" "/opt/rustwide/rustup-home/toolchains/722e1797249a965b6335aebd65d777f917e498f1/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-57b4679830289815.rlib" "/opt/rustwide/rustup-home/toolchains/722e1797249a965b6335aebd65d777f917e498f1/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-2a6a2797f7a73818.rlib" "/opt/rustwide/rustup-home/toolchains/722e1797249a965b6335aebd65d777f917e498f1/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-0e3656b1fda5fd7b.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/722e1797249a965b6335aebd65d777f917e498f1/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-13b419dfbcf9c1f8.rlib" "-Wl,-Bdynamic" "-lutil" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-L" "/opt/rustwide/rustup-home/toolchains/722e1797249a965b6335aebd65d777f917e498f1/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-443462c6f8a2d278" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro,-znow" "-nodefaultlibs"
[INFO] [stdout]   = note: /usr/bin/ld: /opt/rustwide/target/debug/deps/libyew-396f472bcc9b07f0.rlib(yew-396f472bcc9b07f0.yew.bf127d14-cgu.1.rcgu.o): in function `yew::virtual_dom::vtag::VTag<CTX,COMP>::apply_diffs::snippet::__cargo_web_snippet_0da47658267a7497de743e1b0892f992ba6ca6ef':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.12/src/webcore/macros.rs:91: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libyew-396f472bcc9b07f0.rlib(yew-396f472bcc9b07f0.yew.bf127d14-cgu.1.rcgu.o): in function `yew::virtual_dom::vtag::VTag<CTX,COMP>::apply_diffs::snippet::__cargo_web_snippet_6a77b2f2accec26fefbfa0d864061d26f40f8f6f':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.12/src/webcore/macros.rs:91: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libyew-396f472bcc9b07f0.rlib(yew-396f472bcc9b07f0.yew.bf127d14-cgu.1.rcgu.o): in function `yew::virtual_dom::vtag::set_attribute::snippet::__cargo_web_snippet_da2febd72f9938d90bc2bf2905643f595b07abd9':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.12/src/webcore/macros.rs:91: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libyew-396f472bcc9b07f0.rlib(yew-396f472bcc9b07f0.yew.bf127d14-cgu.1.rcgu.o): in function `yew::virtual_dom::vtag::remove_attribute::snippet::__cargo_web_snippet_f6358c198ebcc61c9da370cca2679c0b8bc81a7b':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.12/src/webcore/macros.rs:91: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libyew-396f472bcc9b07f0.rlib(yew-396f472bcc9b07f0.yew.bf127d14-cgu.1.rcgu.o): in function `yew::virtual_dom::vtag::set_checked::snippet::__cargo_web_snippet_a1f43b583e011a9bbeae64030b81f677e6c29005':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.12/src/webcore/macros.rs:91: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-f8c3b4a03f4a01df.rlib(stdweb-f8c3b4a03f4a01df.stdweb.38e21961-cgu.12.rcgu.o):/opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.12/src/webcore/macros.rs:91: more undefined references to `emscripten_asm_const_int' follow
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-f8c3b4a03f4a01df.rlib(stdweb-f8c3b4a03f4a01df.stdweb.38e21961-cgu.15.rcgu.o): in function `stdweb::webcore::ffi::emscripten::event_loop':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.12/src/webcore/ffi/emscripten.rs:11: undefined reference to `emscripten_pause_main_loop'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.12/src/webcore/ffi/emscripten.rs:11: undefined reference to `emscripten_set_main_loop'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-f8c3b4a03f4a01df.rlib(stdweb-f8c3b4a03f4a01df.stdweb.38e21961-cgu.15.rcgu.o): in function `stdweb::webapi::event::IEvent::stop_propagation::snippet::__cargo_web_snippet_85b9ecbdb8513465b790546acfd0cd530441b8a4':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.12/src/webcore/macros.rs:91: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-f8c3b4a03f4a01df.rlib(stdweb-f8c3b4a03f4a01df.stdweb.38e21961-cgu.15.rcgu.o): in function `stdweb::webapi::node::INode::append_child::snippet::__cargo_web_snippet_e741b9d9071097746386b2c2ec044a2bc73e688c':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.12/src/webcore/macros.rs:91: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-f8c3b4a03f4a01df.rlib(stdweb-f8c3b4a03f4a01df.stdweb.38e21961-cgu.15.rcgu.o): in function `stdweb::webapi::node::INode::remove_child::snippet::__cargo_web_snippet_cd41a77d0178ae27c833ef2950e5f1a48a1455c1':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.12/src/webcore/macros.rs:101: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-f8c3b4a03f4a01df.rlib(stdweb-f8c3b4a03f4a01df.stdweb.38e21961-cgu.15.rcgu.o): in function `stdweb::webapi::node::INode::remove_child::snippet::__cargo_web_snippet_b06dde4acf09433b5190a4b001259fe5d4abcbc2':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.12/src/webcore/macros.rs:101: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-f8c3b4a03f4a01df.rlib(stdweb-f8c3b4a03f4a01df.stdweb.38e21961-cgu.15.rcgu.o): in function `stdweb::webapi::node::INode::remove_child::snippet::__cargo_web_snippet_ab05f53189dacccf2d365ad26daa407d4f7abea9':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.12/src/webcore/macros.rs:101: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-f8c3b4a03f4a01df.rlib(stdweb-f8c3b4a03f4a01df.stdweb.38e21961-cgu.15.rcgu.o):/opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.12/src/webcore/macros.rs:101: more undefined references to `emscripten_asm_const_int' follow
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout]   = help: some `extern` functions couldn't be found; some native libraries may need to be installed or have their path specified
[INFO] [stdout]   = note: use the `-l` flag to specify native libraries to link
[INFO] [stdout]   = note: use the `cargo:rustc-link-lib` directive to specify the native libraries to link with Cargo (see https://doc.rust-lang.org/cargo/reference/build-scripts.html#cargorustc-link-libkindname)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `_2018_12_19_wasm_demo_02` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "fd92d11afaa186cef417e2f41127e2b8f6e444e765d833c5b69f3b6585c22d4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd92d11afaa186cef417e2f41127e2b8f6e444e765d833c5b69f3b6585c22d4d", kill_on_drop: false }`
[INFO] [stdout] fd92d11afaa186cef417e2f41127e2b8f6e444e765d833c5b69f3b6585c22d4d