[INFO] updating cached repository https://github.com/snoyberg/lightsout-rs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/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] 76008bccf87b0685164b2da45eeaf82f440a9de8
[INFO] testing snoyberg/lightsout-rs against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsnoyberg%2Flightsout-rs" "work/builds/worker-4/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/snoyberg/lightsout-rs on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/snoyberg/lightsout-rs
[INFO] finished tweaking git repo https://github.com/snoyberg/lightsout-rs
[INFO] tweaked toml for git repo https://github.com/snoyberg/lightsout-rs written to work/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/snoyberg/lightsout-rs already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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-2019-09-28" "build" "--frozen"`
[INFO] [stdout] 6225948c285e8c9ea2c6c8beb82cfadccb56c16259d8f458606669b40d20f228
[INFO] running `"docker" "start" "-a" "6225948c285e8c9ea2c6c8beb82cfadccb56c16259d8f458606669b40d20f228"`
[INFO] [stderr]    Compiling libc v0.2.44
[INFO] [stderr]    Compiling stdweb-internal-runtime v0.1.2
[INFO] [stderr]    Compiling base-x v0.2.3
[INFO] [stderr]    Compiling stdweb-internal-macros v0.2.2
[INFO] [stderr]    Compiling stdweb v0.4.10
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]    Compiling rand v0.6.1
[INFO] [stderr]    Compiling stdweb-derive v0.5.1
[INFO] [stderr]    Compiling lightsout v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:14:24
[INFO] [stderr]    |
[INFO] [stderr] 14 |     listeners: Vec<Box<FnMut(&T)>>,
[INFO] [stderr]    |                        ^^^^^^^^^ help: use `dyn`: `dyn FnMut(&T)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]    --> src/main.rs:156:58
[INFO] [stderr]     |
[INFO] [stderr] 156 |                 let mut lights: [Reactive<Light>; 25] =  std::mem::uninitialized();
[INFO] [stderr]     |                                                          ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new_random`
[INFO] [stderr]    --> src/main.rs:166:5
[INFO] [stderr]     |
[INFO] [stderr] 166 |     fn new_random<R: rand::Rng>(difficulty: usize, rng: &mut R) -> Game {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `all_off`
[INFO] [stderr]    --> src/main.rs:220:5
[INFO] [stderr]     |
[INFO] [stderr] 220 |     fn all_off(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_usize`
[INFO] [stderr]    --> src/main.rs:258:1
[INFO] [stderr]     |
[INFO] [stderr] 258 | fn read_usize(buffer: &mut String, stdin: &std::io::Stdin, stdout: &std::io::Stdout, label: &str) -> Result<usize, std::io::Error> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/lightsout-b251ce0169607338.lightsout.5curgqfm-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/lightsout-b251ce0169607338.lightsout.5curgqfm-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/lightsout-b251ce0169607338.lightsout.5curgqfm-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/lightsout-b251ce0169607338.lightsout.5curgqfm-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/lightsout-b251ce0169607338.lightsout.5curgqfm-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/lightsout-b251ce0169607338.lightsout.5curgqfm-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/lightsout-b251ce0169607338.lightsout.5curgqfm-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/lightsout-b251ce0169607338.lightsout.5curgqfm-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/lightsout-b251ce0169607338.lightsout.5curgqfm-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/lightsout-b251ce0169607338.lightsout.5curgqfm-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/lightsout-b251ce0169607338.lightsout.5curgqfm-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/lightsout-b251ce0169607338.lightsout.5curgqfm-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/lightsout-b251ce0169607338.lightsout.5curgqfm-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/lightsout-b251ce0169607338.lightsout.5curgqfm-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/lightsout-b251ce0169607338.lightsout.5curgqfm-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/lightsout-b251ce0169607338.lightsout.5curgqfm-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/lightsout-b251ce0169607338" "/opt/rustwide/target/debug/deps/lightsout-b251ce0169607338.fqnive9256idmfl.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libstdweb-d3ef4ade15ca3ba4.rlib" "/opt/rustwide/target/debug/deps/libdiscard-846edfb26de9cf45.rlib" "/opt/rustwide/target/debug/deps/libstdweb_internal_runtime-c9576d257e199d50.rlib" "/opt/rustwide/target/debug/deps/libserde_json-58081411bb32cba2.rlib" "/opt/rustwide/target/debug/deps/libryu-241afc8b85942cc5.rlib" "/opt/rustwide/target/debug/deps/libitoa-1c480b98c3ffabe1.rlib" "/opt/rustwide/target/debug/deps/libserde-5914d74791be5710.rlib" "/opt/rustwide/target/debug/deps/librand-a65c3a8be47ea7d3.rlib" "/opt/rustwide/target/debug/deps/liblibc-c77f831cd61cacf6.rlib" "/opt/rustwide/target/debug/deps/librand_xorshift-2b527fc04ebe2516.rlib" "/opt/rustwide/target/debug/deps/librand_pcg-1ce231bbb93763b7.rlib" "/opt/rustwide/target/debug/deps/librand_hc-bbcbaa40a025ca35.rlib" "/opt/rustwide/target/debug/deps/librand_chacha-e66d8273b760c69f.rlib" "/opt/rustwide/target/debug/deps/librand_isaac-dce7418f4199e2f8.rlib" "/opt/rustwide/target/debug/deps/librand_core-97b7d7050440931a.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-db812c66f862af4c.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-e7871a21575d5ff7.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-2f2c581bc0d759e6.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-35731cabc05dc8a0.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-36477394541292db.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-8b706b170c1272d8.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-801dbb3043ccf581.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-a32aa66ce6f72b21.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-d00ea3bfb2bb6c00.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-d2c6ebe88c3e113c.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-df74f62f6bb60621.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-2170473575daeedb.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-1a08089bbddc4f51.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-f8f562e5472ad5c3.rlib" "-Wl,-Bdynamic" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil"
[INFO] [stderr]   = note: /opt/rustwide/target/debug/deps/lightsout-b251ce0169607338.lightsout.5curgqfm-cgu.1.rcgu.o: In function `stdweb::webapi::event_target::IEventTarget::add_event_listener':
[INFO] [stderr]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.10/src/webcore/macros.rs:37: undefined reference to `emscripten_asm_const_int'
[INFO] [stderr]           /opt/rustwide/target/debug/deps/lightsout-b251ce0169607338.lightsout.5curgqfm-cgu.1.rcgu.o: In function `stdweb::webapi::node::INode::first_child':
[INFO] [stderr]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.10/src/webcore/macros.rs:37: undefined reference to `emscripten_asm_const_int'
[INFO] [stderr]           /opt/rustwide/target/debug/deps/lightsout-b251ce0169607338.lightsout.5curgqfm-cgu.1.rcgu.o: In function `stdweb::webapi::node::INode::append_child':
[INFO] [stderr]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.10/src/webcore/macros.rs:37: undefined reference to `emscripten_asm_const_int'
[INFO] [stderr]           /opt/rustwide/target/debug/deps/lightsout-b251ce0169607338.lightsout.5curgqfm-cgu.1.rcgu.o: In function `stdweb::webapi::node::INode::append_child':
[INFO] [stderr]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.10/src/webcore/macros.rs:37: undefined reference to `emscripten_asm_const_int'
[INFO] [stderr]           /opt/rustwide/target/debug/deps/lightsout-b251ce0169607338.lightsout.5curgqfm-cgu.1.rcgu.o: In function `stdweb::webapi::node::INode::remove_child':
[INFO] [stderr]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.10/src/webcore/macros.rs:37: undefined reference to `emscripten_asm_const_int'
[INFO] [stderr]           /opt/rustwide/target/debug/deps/lightsout-b251ce0169607338.lightsout.5curgqfm-cgu.1.rcgu.o:/opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.10/src/webcore/macros.rs:37: 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 `lightsout`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "6225948c285e8c9ea2c6c8beb82cfadccb56c16259d8f458606669b40d20f228"`
[INFO] running `"docker" "rm" "-f" "6225948c285e8c9ea2c6c8beb82cfadccb56c16259d8f458606669b40d20f228"`
[INFO] [stdout] 6225948c285e8c9ea2c6c8beb82cfadccb56c16259d8f458606669b40d20f228