[INFO] cloning repository https://github.com/mizyoukan/mandelbrot-wasm-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mizyoukan/mandelbrot-wasm-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmizyoukan%2Fmandelbrot-wasm-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmizyoukan%2Fmandelbrot-wasm-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6e87c4ca73e7b17b1407c604bc5c0cc16871d3c2
[INFO] testing mizyoukan/mandelbrot-wasm-rs against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmizyoukan%2Fmandelbrot-wasm-rs" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mizyoukan/mandelbrot-wasm-rs on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mizyoukan/mandelbrot-wasm-rs
[INFO] finished tweaking git repo https://github.com/mizyoukan/mandelbrot-wasm-rs
[INFO] tweaked toml for git repo https://github.com/mizyoukan/mandelbrot-wasm-rs written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/mizyoukan/mandelbrot-wasm-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/koute/stdweb`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded base-x v0.2.2
[INFO] [stderr]   Downloaded num-traits v0.2.0
[INFO] [stderr]   Downloaded num-complex v0.1.42
[INFO] [stderr]   Downloaded serde_json v1.0.9
[INFO] [stderr]   Downloaded serde v1.0.27
[INFO] [stderr]   Downloaded syn v0.12.13
[INFO] [stderr]   Downloaded serde_derive_internals v0.19.0
[INFO] [stderr]   Downloaded futures v0.1.18
[INFO] [stderr]   Downloaded serde_derive v1.0.27
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5994ea36e14bc28340a97e80d02c898d74b66473e2b9320640b47d3041fafd5d
[INFO] running `Command { std: "docker" "start" "-a" "5994ea36e14bc28340a97e80d02c898d74b66473e2b9320640b47d3041fafd5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5994ea36e14bc28340a97e80d02c898d74b66473e2b9320640b47d3041fafd5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5994ea36e14bc28340a97e80d02c898d74b66473e2b9320640b47d3041fafd5d", kill_on_drop: false }`
[INFO] [stdout] 5994ea36e14bc28340a97e80d02c898d74b66473e2b9320640b47d3041fafd5d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 70968ed311a884ca690d2b3de899757c354d4e7f7cb154c81a3bf9dd9eefbb9a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "70968ed311a884ca690d2b3de899757c354d4e7f7cb154c81a3bf9dd9eefbb9a", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling num-traits v0.2.0
[INFO] [stderr]    Compiling serde v1.0.27
[INFO] [stderr]    Compiling itoa v0.3.4
[INFO] [stderr]    Compiling stdweb v0.4.0 (https://github.com/koute/stdweb?rev=c9cbbcd#c9cbbcd4)
[INFO] [stderr]    Compiling futures v0.1.18
[INFO] [stderr]    Compiling proc-macro2 v0.2.3
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling quote v0.4.2
[INFO] [stderr]    Compiling syn v0.12.13
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling num-complex v0.1.42
[INFO] [stderr]    Compiling serde_derive_internals v0.19.0
[INFO] [stderr]    Compiling serde_derive v1.0.27
[INFO] [stderr]    Compiling serde_json v1.0.9
[INFO] [stderr]    Compiling stdweb-derive v0.4.0 (https://github.com/koute/stdweb?rev=c9cbbcd#c9cbbcd4)
[INFO] [stderr]    Compiling mandelbrot-wasm-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: linking with `cc` failed: exit code: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-Wl,--eh-frame-hdr" "-L" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/mandelbrot_wasm_rs-997405ea0fb71ac4.mandelbrot_wasm_rs.dxod58ul-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/mandelbrot_wasm_rs-997405ea0fb71ac4.mandelbrot_wasm_rs.dxod58ul-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/mandelbrot_wasm_rs-997405ea0fb71ac4.mandelbrot_wasm_rs.dxod58ul-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/mandelbrot_wasm_rs-997405ea0fb71ac4.mandelbrot_wasm_rs.dxod58ul-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/mandelbrot_wasm_rs-997405ea0fb71ac4.mandelbrot_wasm_rs.dxod58ul-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/mandelbrot_wasm_rs-997405ea0fb71ac4.mandelbrot_wasm_rs.dxod58ul-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/mandelbrot_wasm_rs-997405ea0fb71ac4.mandelbrot_wasm_rs.dxod58ul-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/mandelbrot_wasm_rs-997405ea0fb71ac4.mandelbrot_wasm_rs.dxod58ul-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/mandelbrot_wasm_rs-997405ea0fb71ac4.mandelbrot_wasm_rs.dxod58ul-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/mandelbrot_wasm_rs-997405ea0fb71ac4.mandelbrot_wasm_rs.dxod58ul-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/mandelbrot_wasm_rs-997405ea0fb71ac4.mandelbrot_wasm_rs.dxod58ul-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/mandelbrot_wasm_rs-997405ea0fb71ac4.mandelbrot_wasm_rs.dxod58ul-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/mandelbrot_wasm_rs-997405ea0fb71ac4.mandelbrot_wasm_rs.dxod58ul-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/mandelbrot_wasm_rs-997405ea0fb71ac4.mandelbrot_wasm_rs.dxod58ul-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/mandelbrot_wasm_rs-997405ea0fb71ac4.mandelbrot_wasm_rs.dxod58ul-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/mandelbrot_wasm_rs-997405ea0fb71ac4.mandelbrot_wasm_rs.dxod58ul-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/mandelbrot_wasm_rs-997405ea0fb71ac4" "/opt/rustwide/target/debug/deps/mandelbrot_wasm_rs-997405ea0fb71ac4.f6hmbcjdp0ullwd.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libstdweb-62442a9ac37150ff.rlib" "/opt/rustwide/target/debug/deps/libfutures-4b85b03c9c5493b1.rlib" "/opt/rustwide/target/debug/deps/libserde_json-62c204495d951636.rlib" "/opt/rustwide/target/debug/deps/libdtoa-9e582f846bf6d236.rlib" "/opt/rustwide/target/debug/deps/libitoa-a74952ebff40760e.rlib" "/opt/rustwide/target/debug/deps/libnum_traits-aabeb1842e73e3a8.rlib" "/opt/rustwide/target/debug/deps/libserde-2dc7107c4b1032cf.rlib" "/opt/rustwide/target/debug/deps/libnum_complex-61cd01eb10be8e9e.rlib" "/opt/rustwide/target/debug/deps/libnum_traits-12b299687e0f0997.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-7444fd17919e9af0.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-0ee2f67026959ab7.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-df1bcd1e82256d04.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-ed9ecf1b54021131.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-0ede66bb24e94b96.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-7c2de7f50940865c.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-b138d50085fd4683.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-6576870d8f2b9ae2.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-042a30c5f67b2c91.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-7b3f33d3dbe385dc.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-90b3063cd7b22527.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-17f9484f8dc4da1e.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-df38345acd9d92e1.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-a5e10ca10bdd9e54.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-9e5b4162eeef2cef.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-3a4e739a77468800.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-0f3a0c116d5e04d6.rlib" "-Wl,-Bdynamic" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc"
[INFO] [stdout]   = note: /usr/bin/ld: /opt/rustwide/target/debug/deps/mandelbrot_wasm_rs-997405ea0fb71ac4.mandelbrot_wasm_rs.dxod58ul-cgu.2.rcgu.o: in function `<stdweb::webapi::html_element::HtmlElement as stdweb::webcore::instance_of::InstanceOf>::instance_of':
[INFO] [stdout]           /opt/rustwide/cargo-home/git/checkouts/stdweb-66ebc2cc69682dc2/c9cbbcd/src/webapi/html_element.rs:85: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/mandelbrot_wasm_rs-997405ea0fb71ac4.mandelbrot_wasm_rs.dxod58ul-cgu.2.rcgu.o: in function `stdweb::webapi::node::INode::append_child':
[INFO] [stdout]           /opt/rustwide/cargo-home/git/checkouts/stdweb-66ebc2cc69682dc2/c9cbbcd/src/webapi/node.rs:45: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/mandelbrot_wasm_rs-997405ea0fb71ac4.mandelbrot_wasm_rs.dxod58ul-cgu.3.rcgu.o: in function `stdweb::webapi::non_element_parent_node::INonElementParentNode::get_element_by_id':
[INFO] [stdout]           /opt/rustwide/cargo-home/git/checkouts/stdweb-66ebc2cc69682dc2/c9cbbcd/src/webapi/non_element_parent_node.rs:18: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/mandelbrot_wasm_rs-997405ea0fb71ac4.mandelbrot_wasm_rs.dxod58ul-cgu.5.rcgu.o: in function `stdweb::webcore::value::Reference::from_raw_unchecked':
[INFO] [stdout]           /opt/rustwide/cargo-home/git/checkouts/stdweb-66ebc2cc69682dc2/c9cbbcd/src/webcore/value.rs:33: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-62442a9ac37150ff.rlib(stdweb-62442a9ac37150ff.stdweb.2f3b406q-cgu.0.rcgu.o): in function `<stdweb::webapi::rendering_context::CanvasRenderingContext2d as stdweb::webapi::rendering_context::RenderingContext>::from_canvas':
[INFO] [stdout]           /opt/rustwide/cargo-home/git/checkouts/stdweb-66ebc2cc69682dc2/c9cbbcd/src/webapi/rendering_context.rs:223: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-62442a9ac37150ff.rlib(stdweb-62442a9ac37150ff.stdweb.2f3b406q-cgu.0.rcgu.o):/opt/rustwide/cargo-home/git/checkouts/stdweb-66ebc2cc69682dc2/c9cbbcd/src/webapi/rendering_context.rs:311: more undefined references to `emscripten_asm_const_int' follow
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-62442a9ac37150ff.rlib(stdweb-62442a9ac37150ff.stdweb.2f3b406q-cgu.10.rcgu.o): in function `stdweb::webcore::ffi::emscripten::event_loop':
[INFO] [stdout]           /opt/rustwide/cargo-home/git/checkouts/stdweb-66ebc2cc69682dc2/c9cbbcd/src/webcore/ffi/emscripten.rs:9: undefined reference to `emscripten_pause_main_loop'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/cargo-home/git/checkouts/stdweb-66ebc2cc69682dc2/c9cbbcd/src/webcore/ffi/emscripten.rs:11: undefined reference to `emscripten_set_main_loop'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-62442a9ac37150ff.rlib(stdweb-62442a9ac37150ff.stdweb.2f3b406q-cgu.15.rcgu.o): in function `stdweb::webapi::html_elements::canvas::CanvasElement::set_height':
[INFO] [stdout]           /opt/rustwide/cargo-home/git/checkouts/stdweb-66ebc2cc69682dc2/c9cbbcd/src/webapi/html_elements/canvas.rs:47: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-62442a9ac37150ff.rlib(stdweb-62442a9ac37150ff.stdweb.2f3b406q-cgu.15.rcgu.o): in function `stdweb::webapi::html_elements::canvas::CanvasElement::set_width':
[INFO] [stdout]           /opt/rustwide/cargo-home/git/checkouts/stdweb-66ebc2cc69682dc2/c9cbbcd/src/webapi/html_elements/canvas.rs:71: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-62442a9ac37150ff.rlib(stdweb-62442a9ac37150ff.stdweb.2f3b406q-cgu.15.rcgu.o): in function `<stdweb::webapi::html_elements::canvas::CanvasElement as stdweb::webcore::instance_of::InstanceOf>::instance_of':
[INFO] [stdout]           /opt/rustwide/cargo-home/git/checkouts/stdweb-66ebc2cc69682dc2/c9cbbcd/src/webapi/html_elements/canvas.rs:17: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-62442a9ac37150ff.rlib(stdweb-62442a9ac37150ff.stdweb.2f3b406q-cgu.4.rcgu.o): in function `<stdweb::webcore::symbol::Symbol as core::ops::drop::Drop>::drop':
[INFO] [stdout]           /opt/rustwide/cargo-home/git/checkouts/stdweb-66ebc2cc69682dc2/c9cbbcd/src/webcore/symbol.rs:30: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-62442a9ac37150ff.rlib(stdweb-62442a9ac37150ff.stdweb.2f3b406q-cgu.8.rcgu.o): in function `stdweb::webcore::initialization::initialize':
[INFO] [stdout]           /opt/rustwide/target/debug/build/stdweb-4158db30c5a6d4fc/out/runtime.rs:1: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-62442a9ac37150ff.rlib(stdweb-62442a9ac37150ff.stdweb.2f3b406q-cgu.8.rcgu.o):/opt/rustwide/cargo-home/git/checkouts/stdweb-66ebc2cc69682dc2/c9cbbcd/src/webcore/initialization.rs:23: more undefined references to `emscripten_asm_const_int' follow
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mandelbrot-wasm-rs`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "70968ed311a884ca690d2b3de899757c354d4e7f7cb154c81a3bf9dd9eefbb9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70968ed311a884ca690d2b3de899757c354d4e7f7cb154c81a3bf9dd9eefbb9a", kill_on_drop: false }`
[INFO] [stdout] 70968ed311a884ca690d2b3de899757c354d4e7f7cb154c81a3bf9dd9eefbb9a