[INFO] cloning repository https://github.com/ahouts/web-snake
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ahouts/web-snake" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fahouts%2Fweb-snake", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fahouts%2Fweb-snake'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8e71f901278c9f31fdddec2d9d158cb848184525
[INFO] testing ahouts/web-snake against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fahouts%2Fweb-snake" "/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/ahouts/web-snake on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-8/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/ahouts/web-snake
[INFO] finished tweaking git repo https://github.com/ahouts/web-snake
[INFO] tweaked toml for git repo https://github.com/ahouts/web-snake written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/ahouts/web-snake already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 47005a384c1b57ddccfc1194b201264fea7c7a8565d2d78ab9a0cb3db55fbeb6
[INFO] running `Command { std: "docker" "start" "-a" "47005a384c1b57ddccfc1194b201264fea7c7a8565d2d78ab9a0cb3db55fbeb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "47005a384c1b57ddccfc1194b201264fea7c7a8565d2d78ab9a0cb3db55fbeb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47005a384c1b57ddccfc1194b201264fea7c7a8565d2d78ab9a0cb3db55fbeb6", kill_on_drop: false }`
[INFO] [stdout] 47005a384c1b57ddccfc1194b201264fea7c7a8565d2d78ab9a0cb3db55fbeb6
[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=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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0389a6c0deff9e531066aecfc6058e5dfc0ccfb03536ea7f8b6b1a5f2e2e808b
[INFO] running `Command { std: "docker" "start" "-a" "0389a6c0deff9e531066aecfc6058e5dfc0ccfb03536ea7f8b6b1a5f2e2e808b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.21
[INFO] [stderr]    Compiling serde v1.0.80
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling ryu v0.2.6
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling stdweb-internal-runtime v0.1.2
[INFO] [stderr]    Compiling itoa v0.4.3
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]    Compiling base-x v0.2.3
[INFO] [stderr]    Compiling alloc-no-stdlib v1.3.0
[INFO] [stderr]    Compiling byteorder v1.2.7
[INFO] [stderr]    Compiling discard v1.0.4
[INFO] [stderr]    Compiling stdweb-internal-macros v0.2.2
[INFO] [stderr]    Compiling stdweb v0.4.10
[INFO] [stderr]    Compiling brotli-decompressor v1.3.1
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]    Compiling brotli v2.5.1
[INFO] [stderr]    Compiling syn v0.15.18
[INFO] [stderr]    Compiling serde_json v1.0.33
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling bincode v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]    Compiling stdweb-derive v0.5.1
[INFO] [stderr]    Compiling web-snake v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/main.rs:148:6
[INFO] [stdout]     |
[INFO] [stdout] 148 |     };
[INFO] [stdout]     |      ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:145:17
[INFO] [stdout]     |
[INFO] [stdout] 145 |             let mut snake_game = snake_ref.borrow_mut();
[INFO] [stdout]     |                 ----^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-m64" "/opt/rustwide/target/debug/deps/web_snake-e5363245d0b286e2.web_snake.7a40625b-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/web_snake-e5363245d0b286e2.web_snake.7a40625b-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/web_snake-e5363245d0b286e2.web_snake.7a40625b-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/web_snake-e5363245d0b286e2.web_snake.7a40625b-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/web_snake-e5363245d0b286e2.web_snake.7a40625b-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/web_snake-e5363245d0b286e2.web_snake.7a40625b-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/web_snake-e5363245d0b286e2.web_snake.7a40625b-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/web_snake-e5363245d0b286e2.web_snake.7a40625b-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/web_snake-e5363245d0b286e2.web_snake.7a40625b-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/web_snake-e5363245d0b286e2.web_snake.7a40625b-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/web_snake-e5363245d0b286e2.web_snake.7a40625b-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/web_snake-e5363245d0b286e2.web_snake.7a40625b-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/web_snake-e5363245d0b286e2.web_snake.7a40625b-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/web_snake-e5363245d0b286e2.web_snake.7a40625b-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/web_snake-e5363245d0b286e2.web_snake.7a40625b-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/web_snake-e5363245d0b286e2.web_snake.7a40625b-cgu.9.rcgu.o" "/opt/rustwide/target/debug/deps/web_snake-e5363245d0b286e2.2k6obrip4lbglsfx.rcgu.o" "-Wl,--as-needed" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libchrono-a3e942d308f73784.rlib" "/opt/rustwide/target/debug/deps/libnum_integer-aba3543fb35a6f9a.rlib" "/opt/rustwide/target/debug/deps/libnum_traits-3e148929924274a8.rlib" "/opt/rustwide/target/debug/deps/libtime-6b3bbab1f9c5602f.rlib" "/opt/rustwide/target/debug/deps/liblibc-94c920f5a7e04087.rlib" "/opt/rustwide/target/debug/deps/libbincode-efa8b820bba4563f.rlib" "/opt/rustwide/target/debug/deps/libbyteorder-ac716471e0662004.rlib" "/opt/rustwide/target/debug/deps/libbrotli-d2673603e71105b9.rlib" "/opt/rustwide/target/debug/deps/libbrotli_decompressor-0e229ae736bd4105.rlib" "/opt/rustwide/target/debug/deps/liballoc_no_stdlib-5505eba73dc65134.rlib" "/opt/rustwide/target/debug/deps/libstdweb-de14f9890ef2bc93.rlib" "/opt/rustwide/target/debug/deps/libdiscard-166bdae8beb99e0a.rlib" "/opt/rustwide/target/debug/deps/libstdweb_internal_runtime-fc8d5efcf29f622c.rlib" "/opt/rustwide/target/debug/deps/libserde_json-90583737be7a463a.rlib" "/opt/rustwide/target/debug/deps/libryu-bddbdab27f019c27.rlib" "/opt/rustwide/target/debug/deps/libitoa-ed3e65388eda00dc.rlib" "/opt/rustwide/target/debug/deps/libserde-28a119dc444347b4.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-008055cc7d873802.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-06f01ac2578bda94.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-f9a3c3274a1835e0.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-d4cbb754ee9f4daa.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-95c14e1c1e3ebcc4.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-d489f0ca872880cc.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-75f07df0b18fea39.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd_detect-0c35b278736219a2.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-e530649c9a06e3c6.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-6b148909d375a785.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-cd15fa647f4775d1.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-74be3a703f788ba2.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-8f2c5b445c28b2e3.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-8480e85e0be96197.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-ac23a75f6f42004e.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-557ba8776e04d182.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-4beb03d03503c439.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-dd7db1bec6909f24.rlib" "-Wl,-Bdynamic" "-lutil" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-L" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/deps/web_snake-e5363245d0b286e2" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs"
[INFO] [stdout]   = note: /usr/bin/ld: /opt/rustwide/target/debug/deps/web_snake-e5363245d0b286e2.web_snake.7a40625b-cgu.12.rcgu.o: in function `<stdweb::webapi::events::keyboard::KeyDownEvent as stdweb::webcore::instance_of::InstanceOf>::instance_of':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.10/src/webapi/events/keyboard.rs:225: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/web_snake-e5363245d0b286e2.web_snake.7a40625b-cgu.12.rcgu.o: in function `stdweb::webapi::event_target::IEventTarget::add_event_listener':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.10/src/webapi/event_target.rs:54: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/web_snake-e5363245d0b286e2.web_snake.7a40625b-cgu.12.rcgu.o: in function `stdweb::webapi::event_target::IEventTarget::add_event_listener':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.10/src/webapi/event_target.rs:54: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/web_snake-e5363245d0b286e2.web_snake.7a40625b-cgu.12.rcgu.o: in function `stdweb::webapi::event_target::IEventTarget::add_event_listener':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.10/src/webapi/event_target.rs:54: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/web_snake-e5363245d0b286e2.web_snake.7a40625b-cgu.12.rcgu.o: in function `stdweb::webapi::event_target::IEventTarget::add_event_listener':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.10/src/webapi/event_target.rs:54: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/web_snake-e5363245d0b286e2.web_snake.7a40625b-cgu.12.rcgu.o:/opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.10/src/webapi/event_target.rs:54: more undefined references to `emscripten_asm_const_int' follow
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-de14f9890ef2bc93.rlib(stdweb-de14f9890ef2bc93.stdweb.4a99c6ee-cgu.2.rcgu.o): in function `stdweb::webcore::ffi::emscripten::event_loop':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.10/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-0.4.10/src/webcore/ffi/emscripten.rs:11: undefined reference to `emscripten_set_main_loop'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-de14f9890ef2bc93.rlib(stdweb-de14f9890ef2bc93.stdweb.4a99c6ee-cgu.4.rcgu.o): in function `stdweb::webapi::window::window':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.10/src/webapi/window.rs:45: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-de14f9890ef2bc93.rlib(stdweb-de14f9890ef2bc93.stdweb.4a99c6ee-cgu.4.rcgu.o): in function `stdweb::webapi::window::Window::alert':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.10/src/webapi/window.rs:55: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-de14f9890ef2bc93.rlib(stdweb-de14f9890ef2bc93.stdweb.4a99c6ee-cgu.4.rcgu.o): in function `stdweb::webapi::html_elements::canvas::CanvasElement::height':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.10/src/webapi/html_elements/canvas.rs:35: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-de14f9890ef2bc93.rlib(stdweb-de14f9890ef2bc93.stdweb.4a99c6ee-cgu.4.rcgu.o): in function `stdweb::webapi::html_elements::canvas::CanvasElement::width':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.10/src/webapi/html_elements/canvas.rs:59: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-de14f9890ef2bc93.rlib(stdweb-de14f9890ef2bc93.stdweb.4a99c6ee-cgu.4.rcgu.o): in function `<stdweb::webapi::html_elements::canvas::CanvasElement as stdweb::webcore::instance_of::InstanceOf>::instance_of':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.10/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-de14f9890ef2bc93.rlib(stdweb-de14f9890ef2bc93.stdweb.4a99c6ee-cgu.6.rcgu.o):/opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.10/src/webcore/initialization.rs:20: 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; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `web-snake` due to 2 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "0389a6c0deff9e531066aecfc6058e5dfc0ccfb03536ea7f8b6b1a5f2e2e808b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0389a6c0deff9e531066aecfc6058e5dfc0ccfb03536ea7f8b6b1a5f2e2e808b", kill_on_drop: false }`
[INFO] [stdout] 0389a6c0deff9e531066aecfc6058e5dfc0ccfb03536ea7f8b6b1a5f2e2e808b