[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-1.38-1/sources/1.37.0/gh/iptq/rust-wasm-canvas"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/iptq/rust-wasm-canvas'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/iptq/rust-wasm-canvas" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/iptq/rust-wasm-canvas"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/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 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of iptq/rust-wasm-canvas 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 iptq/rust-wasm-canvas
[INFO] finished frobbing iptq/rust-wasm-canvas
[INFO] frobbed toml for iptq/rust-wasm-canvas written to work/ex/beta-1.38-1/sources/1.37.0/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-1.38-1/sources/beta-2019-08-13/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" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing iptq/rust-wasm-canvas 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-3/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/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] e71cb66efcccf42915f51d56df846415bf32f6f3737bac40d2d42aa602a249f7
[INFO] running `"docker" "start" "-a" "e71cb66efcccf42915f51d56df846415bf32f6f3737bac40d2d42aa602a249f7"`
[INFO] [stderr]    Compiling ref_thread_local v0.0.0
[INFO] [stderr]    Compiling sdl2-sys v0.32.5
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling sdl2 v0.32.1
[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/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/rust_wasm_canvas-1e86e3bf9e4561be.rust_wasm_canvas.7ux9l7xo-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/rust_wasm_canvas-1e86e3bf9e4561be.rust_wasm_canvas.7ux9l7xo-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/rust_wasm_canvas-1e86e3bf9e4561be.rust_wasm_canvas.7ux9l7xo-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/rust_wasm_canvas-1e86e3bf9e4561be.rust_wasm_canvas.7ux9l7xo-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/rust_wasm_canvas-1e86e3bf9e4561be.rust_wasm_canvas.7ux9l7xo-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/rust_wasm_canvas-1e86e3bf9e4561be.rust_wasm_canvas.7ux9l7xo-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/rust_wasm_canvas-1e86e3bf9e4561be.rust_wasm_canvas.7ux9l7xo-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/rust_wasm_canvas-1e86e3bf9e4561be.rust_wasm_canvas.7ux9l7xo-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/rust_wasm_canvas-1e86e3bf9e4561be.rust_wasm_canvas.7ux9l7xo-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/rust_wasm_canvas-1e86e3bf9e4561be.rust_wasm_canvas.7ux9l7xo-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/rust_wasm_canvas-1e86e3bf9e4561be.rust_wasm_canvas.7ux9l7xo-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/rust_wasm_canvas-1e86e3bf9e4561be.rust_wasm_canvas.7ux9l7xo-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/rust_wasm_canvas-1e86e3bf9e4561be.rust_wasm_canvas.7ux9l7xo-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/rust_wasm_canvas-1e86e3bf9e4561be.rust_wasm_canvas.7ux9l7xo-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/rust_wasm_canvas-1e86e3bf9e4561be.rust_wasm_canvas.7ux9l7xo-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/rust_wasm_canvas-1e86e3bf9e4561be.rust_wasm_canvas.7ux9l7xo-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/rust_wasm_canvas-1e86e3bf9e4561be" "/opt/crater/target/debug/deps/rust_wasm_canvas-1e86e3bf9e4561be.6h0p4kml19c6quw.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-657bd82feab0ff05/out" "-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/libref_thread_local-6b6f025852cd9195.rlib" "/opt/crater/target/debug/deps/libfailure-76cea29c3afbf9af.rlib" "/opt/crater/target/debug/deps/libbacktrace-f3cdb6aeb7c91689.rlib" "/opt/crater/target/debug/deps/libbacktrace_sys-632421e36ea1018d.rlib" "/opt/crater/target/debug/deps/librustc_demangle-cfb1af0c5cb5972b.rlib" "/opt/crater/target/debug/deps/libcfg_if-52f952e08f3290ba.rlib" "/opt/crater/target/debug/deps/libsdl2-bc1e87799e625122.rlib" "/opt/crater/target/debug/deps/librand-74437b429b0714b8.rlib" "/opt/crater/target/debug/deps/librand_xorshift-7b19cb00158fa6fb.rlib" "/opt/crater/target/debug/deps/librand_pcg-9681848802540463.rlib" "/opt/crater/target/debug/deps/librand_hc-0652ab44c5db9eb2.rlib" "/opt/crater/target/debug/deps/librand_chacha-11361bf4dfc3f2ea.rlib" "/opt/crater/target/debug/deps/librand_isaac-a4f79f4126c1f25d.rlib" "/opt/crater/target/debug/deps/librand_core-4dce960811a60b1d.rlib" "/opt/crater/target/debug/deps/librand_os-3b92267f6ff46ae2.rlib" "/opt/crater/target/debug/deps/librand_jitter-3f7e8a2892ed93ea.rlib" "/opt/crater/target/debug/deps/librand_core-948b7aad8fedc31f.rlib" "/opt/crater/target/debug/deps/libsdl2_sys-d7360593c3a6df82.rlib" "/opt/crater/target/debug/deps/libbitflags-67998902f09e32c1.rlib" "/opt/crater/target/debug/deps/liblazy_static-df8b3d370f96c908.rlib" "/opt/crater/target/debug/deps/liblibc-c11b30bd1598d379.rlib" "/opt/crater/target/debug/deps/libnum-d77c5714bd491da7.rlib" "/opt/crater/target/debug/deps/libnum_iter-c2670023c017b43e.rlib" "/opt/crater/target/debug/deps/libnum_integer-2746dc7a3b917a7f.rlib" "/opt/crater/target/debug/deps/libnum_traits-b79693a5d7e93180.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" "-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-1e86e3bf9e4561be.rust_wasm_canvas.7ux9l7xo-cgu.12.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" "e71cb66efcccf42915f51d56df846415bf32f6f3737bac40d2d42aa602a249f7"`
[INFO] running `"docker" "rm" "-f" "e71cb66efcccf42915f51d56df846415bf32f6f3737bac40d2d42aa602a249f7"`
[INFO] [stdout] e71cb66efcccf42915f51d56df846415bf32f6f3737bac40d2d42aa602a249f7