[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/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/snoyberg/lightsout-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/snoyberg/lightsout-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/snoyberg/lightsout-rs" "work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/snoyberg/lightsout-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/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 master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of snoyberg/lightsout-rs on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "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/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/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/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/snoyberg/lightsout-rs/Cargo.toml
[INFO] crate snoyberg/lightsout-rs has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing snoyberg/lightsout-rs against master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-6/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/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=forbid" "-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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "build" "--frozen"`
[INFO] [stdout] 9cad3fd82d91b62e70b0bc868b5a7faaff3fa64f1ed1030162e371dd50e1c215
[INFO] running `"docker" "start" "-a" "9cad3fd82d91b62e70b0bc868b5a7faaff3fa64f1ed1030162e371dd50e1c215"`
[INFO] [stderr]    Compiling stdweb-internal-runtime v0.1.2
[INFO] [stderr]    Compiling base-x v0.2.3
[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 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: 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/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/lightsout-e3a24d90961293ea.lightsout.18n94nnv-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/lightsout-e3a24d90961293ea.lightsout.18n94nnv-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/lightsout-e3a24d90961293ea.lightsout.18n94nnv-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/lightsout-e3a24d90961293ea.lightsout.18n94nnv-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/lightsout-e3a24d90961293ea.lightsout.18n94nnv-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/lightsout-e3a24d90961293ea.lightsout.18n94nnv-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/lightsout-e3a24d90961293ea.lightsout.18n94nnv-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/lightsout-e3a24d90961293ea.lightsout.18n94nnv-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/lightsout-e3a24d90961293ea.lightsout.18n94nnv-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/lightsout-e3a24d90961293ea.lightsout.18n94nnv-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/lightsout-e3a24d90961293ea.lightsout.18n94nnv-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/lightsout-e3a24d90961293ea.lightsout.18n94nnv-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/lightsout-e3a24d90961293ea.lightsout.18n94nnv-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/lightsout-e3a24d90961293ea.lightsout.18n94nnv-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/lightsout-e3a24d90961293ea.lightsout.18n94nnv-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/lightsout-e3a24d90961293ea.lightsout.18n94nnv-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/lightsout-e3a24d90961293ea" "/opt/crater/target/debug/deps/lightsout-e3a24d90961293ea.3uee5t0xrsmzk962.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/opt/crater/rustup-home/toolchains/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/libstdweb-c9991a7ea06c59d5.rlib" "/opt/crater/target/debug/deps/libdiscard-bdca4de8f4138539.rlib" "/opt/crater/target/debug/deps/libstdweb_internal_runtime-951e0f380f218564.rlib" "/opt/crater/target/debug/deps/libserde_json-9a85d6a708b62efb.rlib" "/opt/crater/target/debug/deps/libryu-b9d080f35bac9d36.rlib" "/opt/crater/target/debug/deps/libitoa-df83f905c432da48.rlib" "/opt/crater/target/debug/deps/libserde-5f9330bccfd65023.rlib" "/opt/crater/target/debug/deps/librand-e6b2edeef8e97254.rlib" "/opt/crater/target/debug/deps/liblibc-5bf4714a19e37dad.rlib" "/opt/crater/target/debug/deps/librand_xorshift-a6767425fc71f2f6.rlib" "/opt/crater/target/debug/deps/librand_pcg-46b89ff6effd1e55.rlib" "/opt/crater/target/debug/deps/librand_hc-c13928914dbc0e82.rlib" "/opt/crater/target/debug/deps/librand_chacha-35540e3dd3bfe207.rlib" "/opt/crater/target/debug/deps/librand_isaac-ee060631e81f1e15.rlib" "/opt/crater/target/debug/deps/librand_core-576c4e93c9e38e6b.rlib" "-Wl,--start-group" "/opt/crater/rustup-home/toolchains/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-8469d768695d9748.rlib" "/opt/crater/rustup-home/toolchains/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-786c0f406992159b.rlib" "/opt/crater/rustup-home/toolchains/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-eda54ffd3e6402cc.rlib" "/opt/crater/rustup-home/toolchains/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-3b59adbc83c396a4.rlib" "/opt/crater/rustup-home/toolchains/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-1d2bb09f4dcbd4be.rlib" "/opt/crater/rustup-home/toolchains/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-e96acda46b77a2fd.rlib" "/opt/crater/rustup-home/toolchains/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-596074f575b1f832.rlib" "/opt/crater/rustup-home/toolchains/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-57f280c1596673cd.rlib" "/opt/crater/rustup-home/toolchains/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-16132b5b2ecf9ec1.rlib" "-Wl,--end-group" "/opt/crater/rustup-home/toolchains/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-37286a0a9c4289ff.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-e3a24d90961293ea.lightsout.18n94nnv-cgu.0.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-e3a24d90961293ea.lightsout.18n94nnv-cgu.0.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-e3a24d90961293ea.lightsout.18n94nnv-cgu.0.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-e3a24d90961293ea.lightsout.18n94nnv-cgu.0.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-e3a24d90961293ea.lightsout.18n94nnv-cgu.0.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-e3a24d90961293ea.lightsout.18n94nnv-cgu.0.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" "9cad3fd82d91b62e70b0bc868b5a7faaff3fa64f1ed1030162e371dd50e1c215"`
[INFO] running `"docker" "rm" "-f" "9cad3fd82d91b62e70b0bc868b5a7faaff3fa64f1ed1030162e371dd50e1c215"`
[INFO] [stdout] 9cad3fd82d91b62e70b0bc868b5a7faaff3fa64f1ed1030162e371dd50e1c215