[INFO] updating cached repository iptq/rust-wasm-canvas
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/iptq/rust-wasm-canvas
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/iptq/rust-wasm-canvas" "work/ex/beta-1.37-6/sources/1.36.0/gh/iptq/rust-wasm-canvas"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/iptq/rust-wasm-canvas'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/iptq/rust-wasm-canvas" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/iptq/rust-wasm-canvas"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/iptq/rust-wasm-canvas'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8751c546fb296778b065c35411bc202dab0e7688
[INFO] sha for GitHub repo iptq/rust-wasm-canvas: 8751c546fb296778b065c35411bc202dab0e7688
[INFO] validating manifest of iptq/rust-wasm-canvas 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 iptq/rust-wasm-canvas 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 iptq/rust-wasm-canvas
[INFO] finished frobbing iptq/rust-wasm-canvas
[INFO] frobbed toml for iptq/rust-wasm-canvas written to work/ex/beta-1.37-6/sources/1.36.0/gh/iptq/rust-wasm-canvas/Cargo.toml
[INFO] started frobbing iptq/rust-wasm-canvas
[INFO] finished frobbing iptq/rust-wasm-canvas
[INFO] frobbed toml for iptq/rust-wasm-canvas written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/iptq/rust-wasm-canvas/Cargo.toml
[INFO] crate iptq/rust-wasm-canvas 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 iptq/rust-wasm-canvas against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/iptq/rust-wasm-canvas:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] bff195a3833472558459fe38c46d42f6a7fc2854cc50c372b6c1bed86e4bd0d5
[INFO] running `"docker" "start" "-a" "bff195a3833472558459fe38c46d42f6a7fc2854cc50c372b6c1bed86e4bd0d5"`
[INFO] [stderr]    Compiling cc v1.0.29
[INFO] [stderr]    Compiling rustc-demangle v0.1.13
[INFO] [stderr]    Compiling ref_thread_local v0.0.0
[INFO] [stderr]    Compiling backtrace v0.3.13
[INFO] [stderr]    Compiling sdl2-sys v0.32.5
[INFO] [stderr]    Compiling rand_jitter v0.1.3
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling rand_os v0.1.2
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling sdl2 v0.32.1
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling rust-wasm-canvas v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `sdl_context`
[INFO] [stderr]  --> src/system.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     sdl_context: Sdl,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `timer_subsystem`
[INFO] [stderr]  --> src/system.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     timer_subsystem: TimerSubsystem,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `video_subsystem`
[INFO] [stderr]  --> src/system.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     video_subsystem: VideoSubsystem,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `global_system` should have an upper case name
[INFO] [stderr]   --> src/main.rs:17:20
[INFO] [stderr]    |
[INFO] [stderr] 17 |     static managed global_system: System = System::init().unwrap();
[INFO] [stderr]    |                    ^^^^^^^^^^^^^ help: convert the identifier to upper case: `GLOBAL_SYSTEM`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_upper_case_globals)] on by default
[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/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/rust_wasm_canvas-e8b08da9aeee478e.rust_wasm_canvas.dv8piv4w-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/rust_wasm_canvas-e8b08da9aeee478e.rust_wasm_canvas.dv8piv4w-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/rust_wasm_canvas-e8b08da9aeee478e.rust_wasm_canvas.dv8piv4w-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/rust_wasm_canvas-e8b08da9aeee478e.rust_wasm_canvas.dv8piv4w-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/rust_wasm_canvas-e8b08da9aeee478e.rust_wasm_canvas.dv8piv4w-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/rust_wasm_canvas-e8b08da9aeee478e.rust_wasm_canvas.dv8piv4w-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/rust_wasm_canvas-e8b08da9aeee478e.rust_wasm_canvas.dv8piv4w-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/rust_wasm_canvas-e8b08da9aeee478e.rust_wasm_canvas.dv8piv4w-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/rust_wasm_canvas-e8b08da9aeee478e.rust_wasm_canvas.dv8piv4w-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/rust_wasm_canvas-e8b08da9aeee478e.rust_wasm_canvas.dv8piv4w-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/rust_wasm_canvas-e8b08da9aeee478e.rust_wasm_canvas.dv8piv4w-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/rust_wasm_canvas-e8b08da9aeee478e.rust_wasm_canvas.dv8piv4w-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/rust_wasm_canvas-e8b08da9aeee478e.rust_wasm_canvas.dv8piv4w-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/rust_wasm_canvas-e8b08da9aeee478e.rust_wasm_canvas.dv8piv4w-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/rust_wasm_canvas-e8b08da9aeee478e.rust_wasm_canvas.dv8piv4w-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/rust_wasm_canvas-e8b08da9aeee478e.rust_wasm_canvas.dv8piv4w-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/rust_wasm_canvas-e8b08da9aeee478e" "/opt/crater/target/debug/deps/rust_wasm_canvas-e8b08da9aeee478e.4ej6dsa5qugr75s7.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/opt/crater/target/debug/build/backtrace-sys-8b395e57db842d3b/out" "-L" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/libref_thread_local-2b57c88827799265.rlib" "/opt/crater/target/debug/deps/libfailure-b035294c13e2a2b5.rlib" "/opt/crater/target/debug/deps/libbacktrace-24685430224d0daf.rlib" "/opt/crater/target/debug/deps/libbacktrace_sys-a51a8593ce88a63a.rlib" "/opt/crater/target/debug/deps/librustc_demangle-545df78df8ee1b23.rlib" "/opt/crater/target/debug/deps/libcfg_if-f8f28fea847dcb27.rlib" "/opt/crater/target/debug/deps/libsdl2-58092eae730eba13.rlib" "/opt/crater/target/debug/deps/librand-4a53aa9d54d795dd.rlib" "/opt/crater/target/debug/deps/librand_xorshift-6a66fc50e6498d00.rlib" "/opt/crater/target/debug/deps/librand_pcg-e9bfc6cba8890745.rlib" "/opt/crater/target/debug/deps/librand_hc-83283ab0a0ee3df8.rlib" "/opt/crater/target/debug/deps/librand_chacha-b9f5abd1824a7f75.rlib" "/opt/crater/target/debug/deps/librand_isaac-94fc18115e9afd61.rlib" "/opt/crater/target/debug/deps/librand_core-482fdfb44fe03c92.rlib" "/opt/crater/target/debug/deps/librand_os-6f1b2d659962e68f.rlib" "/opt/crater/target/debug/deps/librand_jitter-4e4a4328edc945b8.rlib" "/opt/crater/target/debug/deps/librand_core-a9179eebc82cf0f0.rlib" "/opt/crater/target/debug/deps/libsdl2_sys-2f8d2928f3ea8e82.rlib" "/opt/crater/target/debug/deps/libbitflags-6f632fff558bf385.rlib" "/opt/crater/target/debug/deps/liblazy_static-ab49020bde3ad45f.rlib" "/opt/crater/target/debug/deps/liblibc-a2400964cc07e3c0.rlib" "/opt/crater/target/debug/deps/libnum-558d8b228c2ea06c.rlib" "/opt/crater/target/debug/deps/libnum_iter-a7210c4b115aa645.rlib" "/opt/crater/target/debug/deps/libnum_integer-b313e99b23f6e865.rlib" "/opt/crater/target/debug/deps/libnum_traits-cd98387e0f6e90f9.rlib" "-Wl,--start-group" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-9895e8982b0a79e7.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-57306b8ed3378a0e.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-54463ae5adae3649.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-d99667b199a9875a.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-51f4300e102199f5.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-b3ccf1f7737a6a91.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-157c37a3ceb78853.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-505bcee45aafb736.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-c29abd529ba4452b.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-895383a3232f6572.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-5594cb4f559bc761.rlib" "-Wl,--end-group" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-38e90baf978bc428.rlib" "-Wl,-Bdynamic" "-lSDL2" "-lutil" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil"
[INFO] [stderr]   = note: /opt/crater/target/debug/deps/rust_wasm_canvas-e8b08da9aeee478e.rust_wasm_canvas.dv8piv4w-cgu.10.rcgu.o: In function `rust_wasm_canvas::main':
[INFO] [stderr]           /opt/crater/workdir/src/main.rs:39: undefined reference to `emscripten_set_main_loop'
[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 `rust-wasm-canvas`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "bff195a3833472558459fe38c46d42f6a7fc2854cc50c372b6c1bed86e4bd0d5"`
[INFO] running `"docker" "rm" "-f" "bff195a3833472558459fe38c46d42f6a7fc2854cc50c372b6c1bed86e4bd0d5"`
[INFO] [stdout] bff195a3833472558459fe38c46d42f6a7fc2854cc50c372b6c1bed86e4bd0d5