[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-1.37-6/sources/1.36.0/gh/snoyberg/lightsout-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/snoyberg/lightsout-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/snoyberg/lightsout-rs" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/snoyberg/lightsout-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/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 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of snoyberg/lightsout-rs on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "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-1.37-6/sources/1.36.0/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-1.37-6/sources/beta-2019-07-23/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" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing snoyberg/lightsout-rs against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 4159066eb14b5eed0be5d0b548f7f7d836df9cfcfc258668fcb252076e19d077
[INFO] running `"docker" "start" "-a" "4159066eb14b5eed0be5d0b548f7f7d836df9cfcfc258668fcb252076e19d077"`
[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 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-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/lightsout-9c513af39749b763.lightsout.bwtwcdxt-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/lightsout-9c513af39749b763.lightsout.bwtwcdxt-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/lightsout-9c513af39749b763.lightsout.bwtwcdxt-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/lightsout-9c513af39749b763.lightsout.bwtwcdxt-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/lightsout-9c513af39749b763.lightsout.bwtwcdxt-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/lightsout-9c513af39749b763.lightsout.bwtwcdxt-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/lightsout-9c513af39749b763.lightsout.bwtwcdxt-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/lightsout-9c513af39749b763.lightsout.bwtwcdxt-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/lightsout-9c513af39749b763.lightsout.bwtwcdxt-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/lightsout-9c513af39749b763.lightsout.bwtwcdxt-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/lightsout-9c513af39749b763.lightsout.bwtwcdxt-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/lightsout-9c513af39749b763.lightsout.bwtwcdxt-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/lightsout-9c513af39749b763.lightsout.bwtwcdxt-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/lightsout-9c513af39749b763.lightsout.bwtwcdxt-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/lightsout-9c513af39749b763.lightsout.bwtwcdxt-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/lightsout-9c513af39749b763.lightsout.bwtwcdxt-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/lightsout-9c513af39749b763" "/opt/crater/target/debug/deps/lightsout-9c513af39749b763.an1d2s9h5aw9mwp.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/libstdweb-5a13338db96f3677.rlib" "/opt/crater/target/debug/deps/libdiscard-57236529d613e1dd.rlib" "/opt/crater/target/debug/deps/libstdweb_internal_runtime-0cac03ffd604502b.rlib" "/opt/crater/target/debug/deps/libserde_json-f123eef0d15cab9a.rlib" "/opt/crater/target/debug/deps/libryu-e96bf1fa7384491d.rlib" "/opt/crater/target/debug/deps/libitoa-78d333a119156c7a.rlib" "/opt/crater/target/debug/deps/libserde-63c9111e6d501797.rlib" "/opt/crater/target/debug/deps/librand-3ae8e3c2a4cdc104.rlib" "/opt/crater/target/debug/deps/liblibc-905f7ddd4c010808.rlib" "/opt/crater/target/debug/deps/librand_xorshift-e4175971b0eedd8b.rlib" "/opt/crater/target/debug/deps/librand_pcg-a99eb8994209efbf.rlib" "/opt/crater/target/debug/deps/librand_hc-1a031fb5dbbfb4e7.rlib" "/opt/crater/target/debug/deps/librand_chacha-d91d5d797b9b0b3f.rlib" "/opt/crater/target/debug/deps/librand_isaac-e44604c0a003e3f8.rlib" "/opt/crater/target/debug/deps/librand_core-0169ea5a612ef054.rlib" "-Wl,--start-group" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-a80a1e8e09cafef8.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-e0e6351da805c468.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-e04f54bafc95e331.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-67901d3322495bd5.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-bd390b1abaceaec1.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-312dd37fdc7bedfc.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-8ed0e51d58d644a3.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-8a423c320a6c707f.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-d6a95598e2238263.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-d231614b153016eb.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-3821619027f463e4.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-1cfd794d18771a44.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-dcf33cf10c2452ef.rlib" "-Wl,--end-group" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-c258fea34bf64bce.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-9c513af39749b763.lightsout.bwtwcdxt-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-9c513af39749b763.lightsout.bwtwcdxt-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-9c513af39749b763.lightsout.bwtwcdxt-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-9c513af39749b763.lightsout.bwtwcdxt-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-9c513af39749b763.lightsout.bwtwcdxt-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-9c513af39749b763.lightsout.bwtwcdxt-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" "4159066eb14b5eed0be5d0b548f7f7d836df9cfcfc258668fcb252076e19d077"`
[INFO] running `"docker" "rm" "-f" "4159066eb14b5eed0be5d0b548f7f7d836df9cfcfc258668fcb252076e19d077"`
[INFO] [stdout] 4159066eb14b5eed0be5d0b548f7f7d836df9cfcfc258668fcb252076e19d077