[INFO] updating cached repository https://github.com/corytaitchison/blackjack-online
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cdb82e34b173e2248d1902f145a6a9291de32917
[INFO] testing corytaitchison/blackjack-online against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcorytaitchison%2Fblackjack-online" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/corytaitchison/blackjack-online on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/corytaitchison/blackjack-online
[INFO] finished tweaking git repo https://github.com/corytaitchison/blackjack-online
[INFO] tweaked toml for git repo https://github.com/corytaitchison/blackjack-online written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/corytaitchison/blackjack-online already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4fa91c7a63ae549fddfef1c251009761ce2c8bf85f8fe990836de8f2353d5f36
[INFO] running `"docker" "start" "-a" "4fa91c7a63ae549fddfef1c251009761ce2c8bf85f8fe990836de8f2353d5f36"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling stdweb-internal-runtime v0.1.5
[INFO] [stderr]    Compiling base-x v0.2.6
[INFO] [stderr]    Compiling ndarray v0.13.0
[INFO] [stderr]    Compiling yew v0.11.0
[INFO] [stderr]    Compiling yew-macro v0.11.0
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling stdweb v0.4.20
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling backtrace v0.3.42
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling failure v0.1.6
[INFO] [stderr]    Compiling futures-macro v0.3.1
[INFO] [stderr]    Compiling futures-util v0.3.1
[INFO] [stderr]    Compiling futures-executor v0.3.1
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling futures v0.3.1
[INFO] [stderr]    Compiling serde_json v1.0.44
[INFO] [stderr]    Compiling bincode v1.2.1
[INFO] [stderr]    Compiling stdweb-derive v0.5.3
[INFO] [stderr]    Compiling stdweb-internal-macros v0.2.9
[INFO] [stderr]    Compiling blackjack-online v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variant is never constructed: `CycleState`
[INFO] [stderr]   --> src/components/action_button.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     CycleState,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `console`
[INFO] [stderr]   --> src/lib.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     console: ConsoleService,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] error: linking with `cc` failed: exit code: 1
[INFO] [stderr]   |
[INFO] [stderr]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-L" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/blackjack_online-b3da3eea16adeaf7.blackjack_online.5cr3pcro-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/blackjack_online-b3da3eea16adeaf7.blackjack_online.5cr3pcro-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/blackjack_online-b3da3eea16adeaf7.blackjack_online.5cr3pcro-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/blackjack_online-b3da3eea16adeaf7.blackjack_online.5cr3pcro-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/blackjack_online-b3da3eea16adeaf7.blackjack_online.5cr3pcro-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/blackjack_online-b3da3eea16adeaf7.blackjack_online.5cr3pcro-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/blackjack_online-b3da3eea16adeaf7.blackjack_online.5cr3pcro-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/blackjack_online-b3da3eea16adeaf7.blackjack_online.5cr3pcro-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/blackjack_online-b3da3eea16adeaf7.blackjack_online.5cr3pcro-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/blackjack_online-b3da3eea16adeaf7.blackjack_online.5cr3pcro-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/blackjack_online-b3da3eea16adeaf7.blackjack_online.5cr3pcro-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/blackjack_online-b3da3eea16adeaf7.blackjack_online.5cr3pcro-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/blackjack_online-b3da3eea16adeaf7.blackjack_online.5cr3pcro-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/blackjack_online-b3da3eea16adeaf7.blackjack_online.5cr3pcro-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/blackjack_online-b3da3eea16adeaf7.blackjack_online.5cr3pcro-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/blackjack_online-b3da3eea16adeaf7.blackjack_online.5cr3pcro-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/blackjack_online-b3da3eea16adeaf7" "/opt/rustwide/target/debug/deps/blackjack_online-b3da3eea16adeaf7.3swpdcf880hemxkg.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/target/debug/build/backtrace-sys-85de2db0b3bf4621/out" "-L" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libbjo-a558caf37858be69.rlib" "/opt/rustwide/target/debug/deps/libyew-494d8e31f1b3c340.rlib" "/opt/rustwide/target/debug/deps/libproc_macro_nested-3b9d3705a85b5147.rlib" "/opt/rustwide/target/debug/deps/libhttp-55532e8710845f8c.rlib" "/opt/rustwide/target/debug/deps/libbytes-3a4187fd0a5185a1.rlib" "/opt/rustwide/target/debug/deps/libfnv-18c63eb7d27d11b7.rlib" "/opt/rustwide/target/debug/deps/libslab-4c5e5a4b1eda1a25.rlib" "/opt/rustwide/target/debug/deps/libanymap-16ac0cbd5a2e2ebb.rlib" "/opt/rustwide/target/debug/deps/libindexmap-5038356c3e608616.rlib" "/opt/rustwide/target/debug/deps/liblog-c709ae7ff9aa4321.rlib" "/opt/rustwide/target/debug/deps/libbincode-d13f32bc79a5d1d5.rlib" "/opt/rustwide/target/debug/deps/libbyteorder-f8593b3755ad6d95.rlib" "/opt/rustwide/target/debug/deps/libfailure-53a40ff71a0a4539.rlib" "/opt/rustwide/target/debug/deps/libbacktrace-e78b75d5e2b5108a.rlib" "/opt/rustwide/target/debug/deps/libbacktrace_sys-44d4c3f7da8967c2.rlib" "/opt/rustwide/target/debug/deps/librustc_demangle-96825a490c3cad52.rlib" "/opt/rustwide/target/debug/deps/libstdweb-48a94f8f722fd41f.rlib" "/opt/rustwide/target/debug/deps/libdiscard-655a8a041e78b6aa.rlib" "/opt/rustwide/target/debug/deps/libstdweb_internal_runtime-f19a79c7cf8c28f9.rlib" "/opt/rustwide/target/debug/deps/libserde_json-ffb1374df390d176.rlib" "/opt/rustwide/target/debug/deps/libryu-4b9f3bcd1724e82b.rlib" "/opt/rustwide/target/debug/deps/libitoa-7de3c31887c9a994.rlib" "/opt/rustwide/target/debug/deps/libserde-e3b7c3eb8d30cce9.rlib" "/opt/rustwide/target/debug/deps/librand-b58d133e32ac3d03.rlib" "/opt/rustwide/target/debug/deps/librand_chacha-ac64b5fb2e622a52.rlib" "/opt/rustwide/target/debug/deps/libc2_chacha-2620b4cba9d0fc59.rlib" "/opt/rustwide/target/debug/deps/libppv_lite86-eb2823c1b1b026b4.rlib" "/opt/rustwide/target/debug/deps/librand_core-1336cf02affd6fd6.rlib" "/opt/rustwide/target/debug/deps/libgetrandom-2851bc30e2ace2a1.rlib" "/opt/rustwide/target/debug/deps/liblibc-813b6816ff4e58b4.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-0d7329a98a9ffead.rlib" "/opt/rustwide/target/debug/deps/libndarray-cfdf54fe7eec6099.rlib" "/opt/rustwide/target/debug/deps/libmatrixmultiply-2b849a7a8ae6906e.rlib" "/opt/rustwide/target/debug/deps/libnum_complex-bbd1fd552e81a9cb.rlib" "/opt/rustwide/target/debug/deps/libnum_integer-e2d76c693688508b.rlib" "/opt/rustwide/target/debug/deps/libitertools-791b084c4ee40fed.rlib" "/opt/rustwide/target/debug/deps/libeither-667bb5f36f496548.rlib" "/opt/rustwide/target/debug/deps/libnum_traits-447df9d8850f95e5.rlib" "/opt/rustwide/target/debug/deps/librawpointer-144ad41b6bbe73b8.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-44f8eb3d0b2fad61.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-abc626f09920d361.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-546e83c8973f1a65.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-12768dfc68674934.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-e06867e4497f2ee8.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-cbc579f43f6df57b.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-7abd6d5a7ebf9a23.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-46423c7bc03bd327.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-fc3773ed7bc68f07.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-9cdc98176efd27e2.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-02d88502a763e06b.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-8cdc9d38dd6cd3ce.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-336f7d63e72901ef.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-57917b1be5233117.rlib" "-Wl,-Bdynamic" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-ldl" "-lutil"
[INFO] [stderr]   = note: /usr/bin/ld: /opt/rustwide/target/debug/deps/libyew-494d8e31f1b3c340.rlib(yew-494d8e31f1b3c340.yew.7zsfy1r1-cgu.10.rcgu.o): in function `yew::virtual_dom::vtag::VTag::apply_diffs::snippet::__cargo_web_snippet_0da47658267a7497de743e1b0892f992ba6ca6ef':
[INFO] [stderr]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.20/src/webcore/macros.rs:139: undefined reference to `emscripten_asm_const_int'
[INFO] [stderr]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libyew-494d8e31f1b3c340.rlib(yew-494d8e31f1b3c340.yew.7zsfy1r1-cgu.10.rcgu.o): in function `yew::virtual_dom::vtag::set_attribute::snippet::__cargo_web_snippet_da2febd72f9938d90bc2bf2905643f595b07abd9':
[INFO] [stderr]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.20/src/webcore/macros.rs:139: undefined reference to `emscripten_asm_const_int'
[INFO] [stderr]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libyew-494d8e31f1b3c340.rlib(yew-494d8e31f1b3c340.yew.7zsfy1r1-cgu.10.rcgu.o): in function `yew::virtual_dom::vtag::remove_attribute::snippet::__cargo_web_snippet_f6358c198ebcc61c9da370cca2679c0b8bc81a7b':
[INFO] [stderr]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.20/src/webcore/macros.rs:139: undefined reference to `emscripten_asm_const_int'
[INFO] [stderr]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libyew-494d8e31f1b3c340.rlib(yew-494d8e31f1b3c340.yew.7zsfy1r1-cgu.10.rcgu.o): in function `yew::virtual_dom::vtag::set_checked::snippet::__cargo_web_snippet_a1f43b583e011a9bbeae64030b81f677e6c29005':
[INFO] [stderr]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.20/src/webcore/macros.rs:139: undefined reference to `emscripten_asm_const_int'
[INFO] [stderr]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-48a94f8f722fd41f.rlib(stdweb-48a94f8f722fd41f.stdweb.e3y00956-cgu.1.rcgu.o): in function `<stdweb::webcore::symbol::Symbol as core::clone::Clone>::clone::snippet::__cargo_web_snippet_0aced9e2351ced72f1ff99645a129132b16c0d3c':
[INFO] [stderr]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.20/src/webcore/macros.rs:47: undefined reference to `emscripten_asm_const_int'
[INFO] [stderr]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-48a94f8f722fd41f.rlib(stdweb-48a94f8f722fd41f.stdweb.e3y00956-cgu.1.rcgu.o):/opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.20/src/webcore/macros.rs:139: more undefined references to `emscripten_asm_const_int' follow
[INFO] [stderr]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-48a94f8f722fd41f.rlib(stdweb-48a94f8f722fd41f.stdweb.e3y00956-cgu.4.rcgu.o): in function `stdweb::webcore::ffi::emscripten::event_loop':
[INFO] [stderr]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.20/src/webcore/ffi/emscripten.rs:9: undefined reference to `emscripten_pause_main_loop'
[INFO] [stderr]           /usr/bin/ld: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.20/src/webcore/ffi/emscripten.rs:11: undefined reference to `emscripten_set_main_loop'
[INFO] [stderr]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-48a94f8f722fd41f.rlib(stdweb-48a94f8f722fd41f.stdweb.e3y00956-cgu.5.rcgu.o): in function `stdweb::webapi::node::INode::append_child::snippet::__cargo_web_snippet_e741b9d9071097746386b2c2ec044a2bc73e688c':
[INFO] [stderr]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.20/src/webcore/macros.rs:139: undefined reference to `emscripten_asm_const_int'
[INFO] [stderr]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-48a94f8f722fd41f.rlib(stdweb-48a94f8f722fd41f.stdweb.e3y00956-cgu.5.rcgu.o): in function `stdweb::webapi::node::INode::remove_child::snippet::__cargo_web_snippet_cd41a77d0178ae27c833ef2950e5f1a48a1455c1':
[INFO] [stderr]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.20/src/webcore/macros.rs:149: undefined reference to `emscripten_asm_const_int'
[INFO] [stderr]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-48a94f8f722fd41f.rlib(stdweb-48a94f8f722fd41f.stdweb.e3y00956-cgu.5.rcgu.o): in function `stdweb::webapi::node::INode::remove_child::snippet::__cargo_web_snippet_b06dde4acf09433b5190a4b001259fe5d4abcbc2':
[INFO] [stderr]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.20/src/webcore/macros.rs:149: undefined reference to `emscripten_asm_const_int'
[INFO] [stderr]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-48a94f8f722fd41f.rlib(stdweb-48a94f8f722fd41f.stdweb.e3y00956-cgu.5.rcgu.o): in function `stdweb::webapi::node::INode::remove_child::snippet::__cargo_web_snippet_ab05f53189dacccf2d365ad26daa407d4f7abea9':
[INFO] [stderr]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.20/src/webcore/macros.rs:149: undefined reference to `emscripten_asm_const_int'
[INFO] [stderr]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-48a94f8f722fd41f.rlib(stdweb-48a94f8f722fd41f.stdweb.e3y00956-cgu.5.rcgu.o): in function `stdweb::webapi::node::INode::remove_child::snippet::__cargo_web_snippet_614a3dd2adb7e9eac4a0ec6e59d37f87e0521c3b':
[INFO] [stderr]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.20/src/webcore/macros.rs:149: undefined reference to `emscripten_asm_const_int'
[INFO] [stderr]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-48a94f8f722fd41f.rlib(stdweb-48a94f8f722fd41f.stdweb.e3y00956-cgu.5.rcgu.o):/opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.20/src/webcore/macros.rs:149: more undefined references to `emscripten_asm_const_int' follow
[INFO] [stderr]           collect2: error: ld returned 1 exit status
[INFO] [stderr]           
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `blackjack-online`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "4fa91c7a63ae549fddfef1c251009761ce2c8bf85f8fe990836de8f2353d5f36"`
[INFO] running `"docker" "rm" "-f" "4fa91c7a63ae549fddfef1c251009761ce2c8bf85f8fe990836de8f2353d5f36"`
[INFO] [stdout] 4fa91c7a63ae549fddfef1c251009761ce2c8bf85f8fe990836de8f2353d5f36