[INFO] updating cached repository snoyberg/lightsout-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/snoyberg/lightsout-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/snoyberg/lightsout-rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/snoyberg/lightsout-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/snoyberg/lightsout-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/snoyberg/lightsout-rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/snoyberg/lightsout-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/snoyberg/lightsout-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 76008bccf87b0685164b2da45eeaf82f440a9de8
[INFO] sha for GitHub repo snoyberg/lightsout-rs: 76008bccf87b0685164b2da45eeaf82f440a9de8
[INFO] validating manifest of snoyberg/lightsout-rs on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of snoyberg/lightsout-rs on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing snoyberg/lightsout-rs
[INFO] finished frobbing snoyberg/lightsout-rs
[INFO] frobbed toml for snoyberg/lightsout-rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/snoyberg/lightsout-rs/Cargo.toml
[INFO] started frobbing snoyberg/lightsout-rs
[INFO] finished frobbing snoyberg/lightsout-rs
[INFO] frobbed toml for snoyberg/lightsout-rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/snoyberg/lightsout-rs/Cargo.toml
[INFO] crate snoyberg/lightsout-rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing snoyberg/lightsout-rs against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/snoyberg/lightsout-rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] b76bb72b8f5c3047d375e0a874a2cd25158b7f6ca375e0d3d37a5612a54c0652
[INFO] running `"docker" "start" "-a" "b76bb72b8f5c3047d375e0a874a2cd25158b7f6ca375e0d3d37a5612a54c0652"`
[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 syn v0.15.22
[INFO] [stderr]    Compiling rand v0.6.1
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]    Compiling stdweb-derive v0.5.1
[INFO] [stderr]    Compiling lightsout v0.1.0 (/opt/crater/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: 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/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/lightsout-a5e80103b040b120.lightsout.e3iznylu-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/lightsout-a5e80103b040b120.lightsout.e3iznylu-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/lightsout-a5e80103b040b120.lightsout.e3iznylu-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/lightsout-a5e80103b040b120.lightsout.e3iznylu-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/lightsout-a5e80103b040b120.lightsout.e3iznylu-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/lightsout-a5e80103b040b120.lightsout.e3iznylu-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/lightsout-a5e80103b040b120.lightsout.e3iznylu-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/lightsout-a5e80103b040b120.lightsout.e3iznylu-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/lightsout-a5e80103b040b120.lightsout.e3iznylu-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/lightsout-a5e80103b040b120.lightsout.e3iznylu-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/lightsout-a5e80103b040b120.lightsout.e3iznylu-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/lightsout-a5e80103b040b120.lightsout.e3iznylu-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/lightsout-a5e80103b040b120.lightsout.e3iznylu-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/lightsout-a5e80103b040b120.lightsout.e3iznylu-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/lightsout-a5e80103b040b120.lightsout.e3iznylu-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/lightsout-a5e80103b040b120.lightsout.e3iznylu-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/lightsout-a5e80103b040b120" "/opt/crater/target/debug/deps/lightsout-a5e80103b040b120.4axz9rgsafuynh6l.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/libstdweb-90e92f6e77173ed7.rlib" "/opt/crater/target/debug/deps/libdiscard-9c096ff64b75fbcb.rlib" "/opt/crater/target/debug/deps/libstdweb_internal_runtime-70e5f0c291db6bff.rlib" "/opt/crater/target/debug/deps/libserde_json-d26bd6b5ed5c507b.rlib" "/opt/crater/target/debug/deps/libryu-511d1a21231511ed.rlib" "/opt/crater/target/debug/deps/libitoa-965dbaa5417f4779.rlib" "/opt/crater/target/debug/deps/libserde-f9461453cd826712.rlib" "/opt/crater/target/debug/deps/librand-69d32b4106a32cb4.rlib" "/opt/crater/target/debug/deps/liblibc-b9309cc3089265c8.rlib" "/opt/crater/target/debug/deps/librand_xorshift-ed607ecbc9af3364.rlib" "/opt/crater/target/debug/deps/librand_pcg-f13281b07f95deab.rlib" "/opt/crater/target/debug/deps/librand_hc-3fc42ec1c8af02b1.rlib" "/opt/crater/target/debug/deps/librand_chacha-9efa1c258da08e64.rlib" "/opt/crater/target/debug/deps/librand_isaac-c8ad415819834091.rlib" "/opt/crater/target/debug/deps/librand_core-31821dc910b5bac2.rlib" "-Wl,--start-group" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-1d6d86bd078a28e9.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-e9721e46a424e2a9.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-c07193698f282147.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-6da45690f3863086.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-690797036dd27680.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-d3896ccbfd8eda2b.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-7cccc3739e3d7623.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-5e9ba178a513cd29.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-5ca9f83bf63d1f4b.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-bba1c7ef9e950882.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-e23c9de62012deb5.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-9b59dffdcd513d5d.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-17392340ab2e4a97.rlib" "-Wl,--end-group" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-ac21508a81e3f7f3.rlib" "-Wl,-Bdynamic" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil"
[INFO] [stderr]   = note: /opt/crater/target/debug/deps/lightsout-a5e80103b040b120.lightsout.e3iznylu-cgu.1.rcgu.o: In function `stdweb::webapi::event_target::IEventTarget::add_event_listener':
[INFO] [stderr]           /opt/crater/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/crater/target/debug/deps/lightsout-a5e80103b040b120.lightsout.e3iznylu-cgu.1.rcgu.o: In function `stdweb::webapi::node::INode::first_child':
[INFO] [stderr]           /opt/crater/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/crater/target/debug/deps/lightsout-a5e80103b040b120.lightsout.e3iznylu-cgu.1.rcgu.o: In function `stdweb::webapi::node::INode::append_child':
[INFO] [stderr]           /opt/crater/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/crater/target/debug/deps/lightsout-a5e80103b040b120.lightsout.e3iznylu-cgu.1.rcgu.o: In function `stdweb::webapi::node::INode::append_child':
[INFO] [stderr]           /opt/crater/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/crater/target/debug/deps/lightsout-a5e80103b040b120.lightsout.e3iznylu-cgu.1.rcgu.o: In function `stdweb::webapi::node::INode::remove_child':
[INFO] [stderr]           /opt/crater/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/crater/target/debug/deps/lightsout-a5e80103b040b120.lightsout.e3iznylu-cgu.1.rcgu.o:/opt/crater/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" "b76bb72b8f5c3047d375e0a874a2cd25158b7f6ca375e0d3d37a5612a54c0652"`
[INFO] running `"docker" "rm" "-f" "b76bb72b8f5c3047d375e0a874a2cd25158b7f6ca375e0d3d37a5612a54c0652"`
[INFO] [stdout] b76bb72b8f5c3047d375e0a874a2cd25158b7f6ca375e0d3d37a5612a54c0652