[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 master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FClarkWalker%2Frust_wasm_yew_demo" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ClarkWalker/rust_wasm_yew_demo on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "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-8/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" "+b70888601af92f6cdc0364abab3446e418b91d36" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8ac99a3696ab3797103345a80ac723d67f3a9453d68c78fe083c8ee8d63310b7
[INFO] running `Command { std: "docker" "start" "-a" "8ac99a3696ab3797103345a80ac723d67f3a9453d68c78fe083c8ee8d63310b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ac99a3696ab3797103345a80ac723d67f3a9453d68c78fe083c8ee8d63310b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ac99a3696ab3797103345a80ac723d67f3a9453d68c78fe083c8ee8d63310b7", kill_on_drop: false }`
[INFO] [stdout] 8ac99a3696ab3797103345a80ac723d67f3a9453d68c78fe083c8ee8d63310b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7ec1911da683add68733c8ed59b2b98c89d38c1bf4ff1f23fc260c47832dc9e3
[INFO] running `Command { std: "docker" "start" "-a" "7ec1911da683add68733c8ed59b2b98c89d38c1bf4ff1f23fc260c47832dc9e3", kill_on_drop: false }`
[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 cc v1.0.27
[INFO] [stderr]    Compiling autocfg v0.1.1
[INFO] [stderr]    Compiling stdweb-internal-runtime v0.1.3
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling base-x v0.2.3
[INFO] [stderr]    Compiling byteorder v1.2.7
[INFO] [stderr]    Compiling rustc-demangle v0.1.11
[INFO] [stderr]    Compiling stdweb v0.4.12
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling backtrace v0.3.13
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]    Compiling backtrace-sys v0.1.26
[INFO] [stderr]    Compiling syn v0.15.23
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling bytes v0.4.11
[INFO] [stderr]    Compiling http v0.1.14
[INFO] [stderr]    Compiling serde_json v1.0.33
[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-internal-macros v0.2.4
[INFO] [stderr]    Compiling stdweb-derive v0.5.1
[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-afd63f40d5ce831b._2018_12_19_wasm_demo_02.3d8aeb27-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-afd63f40d5ce831b._2018_12_19_wasm_demo_02.3d8aeb27-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-afd63f40d5ce831b._2018_12_19_wasm_demo_02.3d8aeb27-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-afd63f40d5ce831b._2018_12_19_wasm_demo_02.3d8aeb27-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-afd63f40d5ce831b._2018_12_19_wasm_demo_02.3d8aeb27-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-afd63f40d5ce831b._2018_12_19_wasm_demo_02.3d8aeb27-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-afd63f40d5ce831b._2018_12_19_wasm_demo_02.3d8aeb27-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-afd63f40d5ce831b._2018_12_19_wasm_demo_02.3d8aeb27-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-afd63f40d5ce831b._2018_12_19_wasm_demo_02.3d8aeb27-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-afd63f40d5ce831b._2018_12_19_wasm_demo_02.3d8aeb27-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-afd63f40d5ce831b._2018_12_19_wasm_demo_02.3d8aeb27-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-afd63f40d5ce831b._2018_12_19_wasm_demo_02.3d8aeb27-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-afd63f40d5ce831b._2018_12_19_wasm_demo_02.3d8aeb27-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-afd63f40d5ce831b._2018_12_19_wasm_demo_02.3d8aeb27-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-afd63f40d5ce831b._2018_12_19_wasm_demo_02.3d8aeb27-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-afd63f40d5ce831b._2018_12_19_wasm_demo_02.3d8aeb27-cgu.9.rcgu.o" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-afd63f40d5ce831b.31urtme2dcio61bz.rcgu.o" "-Wl,--as-needed" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/target/debug/build/backtrace-sys-611321ee6fdd7d86/out" "-L" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libyew-783d2f4abc28b73f.rlib" "/opt/rustwide/target/debug/deps/libstdweb-52e9da5bef697906.rlib" "/opt/rustwide/target/debug/deps/libdiscard-e53e9963f70e18d6.rlib" "/opt/rustwide/target/debug/deps/libstdweb_internal_runtime-9b3caef9d325b553.rlib" "/opt/rustwide/target/debug/deps/libserde_json-30d5d8b909d0bd2c.rlib" "/opt/rustwide/target/debug/deps/libryu-d0e657f5cc677ab3.rlib" "/opt/rustwide/target/debug/deps/libserde-5c295389d3a0fa78.rlib" "/opt/rustwide/target/debug/deps/libhttp-074869ba25152beb.rlib" "/opt/rustwide/target/debug/deps/libitoa-629fadaade644a01.rlib" "/opt/rustwide/target/debug/deps/libfnv-e4c6ba56d659bb77.rlib" "/opt/rustwide/target/debug/deps/libbytes-9b3f66c9474936f1.rlib" "/opt/rustwide/target/debug/deps/libiovec-68b2caaf6c141798.rlib" "/opt/rustwide/target/debug/deps/libbyteorder-1c467fd3cc6a12f3.rlib" "/opt/rustwide/target/debug/deps/liblog-e56f824d593d0005.rlib" "/opt/rustwide/target/debug/deps/libfailure-200976b5b64e131f.rlib" "/opt/rustwide/target/debug/deps/libbacktrace-ff8102bbda2d4a4b.rlib" "/opt/rustwide/target/debug/deps/libbacktrace_sys-30f1d5f83c0e1dbc.rlib" "/opt/rustwide/target/debug/deps/librustc_demangle-ec4d4ada6d5619e7.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-956879fdd302e67f.rlib" "/opt/rustwide/target/debug/deps/liblibc-47ac70a49eddf9d5.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-9c44f1fe63de3edb.rlib" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-5dfdbb680ac299a1.rlib" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-353beaf877db2fdf.rlib" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-cd4abd33332d2d3f.rlib" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-3b908b5b50ddd80c.rlib" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-9cafd3521b5532d3.rlib" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-7b0935832903a9ac.rlib" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd_detect-8a349b13d67c76e3.rlib" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-9d41e7cb09eafd8e.rlib" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-095194fedb4c0ec4.rlib" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-968cf83f088269ec.rlib" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-e63bbb95a6beff5c.rlib" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-9f216e67c2916fa5.rlib" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-4688b763605c6a0e.rlib" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-a9b2dc3244289321.rlib" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-52d5241975807511.rlib" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-9924c22ae1efcf66.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-003d83a588984e1f.rlib" "-Wl,-Bdynamic" "-lutil" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-L" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/deps/_2018_12_19_wasm_demo_02-afd63f40d5ce831b" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs"
[INFO] [stdout]   = note: /usr/bin/ld: /opt/rustwide/target/debug/deps/libyew-783d2f4abc28b73f.rlib(yew-783d2f4abc28b73f.yew.5d758253-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-783d2f4abc28b73f.rlib(yew-783d2f4abc28b73f.yew.5d758253-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-783d2f4abc28b73f.rlib(yew-783d2f4abc28b73f.yew.5d758253-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-783d2f4abc28b73f.rlib(yew-783d2f4abc28b73f.yew.5d758253-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-783d2f4abc28b73f.rlib(yew-783d2f4abc28b73f.yew.5d758253-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-52e9da5bef697906.rlib(stdweb-52e9da5bef697906.stdweb.1daef19a-cgu.1.rcgu.o):/opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.12/src/webcore/macros.rs:32: more undefined references to `emscripten_asm_const_int' follow
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-52e9da5bef697906.rlib(stdweb-52e9da5bef697906.stdweb.1daef19a-cgu.8.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-52e9da5bef697906.rlib(stdweb-52e9da5bef697906.stdweb.1daef19a-cgu.8.rcgu.o): in function `stdweb::webapi::event_target::EventListenerHandle::remove::snippet::__cargo_web_snippet_f750c7bda400081b4d7209f43f9d59214d39f6ea':
[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-52e9da5bef697906.rlib(stdweb-52e9da5bef697906.stdweb.1daef19a-cgu.8.rcgu.o): in function `stdweb::webapi::event_target::IEventTarget::add_event_listener::snippet::__cargo_web_snippet_99c4eefdc8d4cc724135163b8c8665a1f3de99e4':
[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]           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" "7ec1911da683add68733c8ed59b2b98c89d38c1bf4ff1f23fc260c47832dc9e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ec1911da683add68733c8ed59b2b98c89d38c1bf4ff1f23fc260c47832dc9e3", kill_on_drop: false }`
[INFO] [stdout] 7ec1911da683add68733c8ed59b2b98c89d38c1bf4ff1f23fc260c47832dc9e3