[INFO] updating cached repository nrxus/engine_duck
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/nrxus/engine_duck
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/nrxus/engine_duck" "work/ex/beta-1.38-1/sources/1.37.0/gh/nrxus/engine_duck"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/nrxus/engine_duck'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/nrxus/engine_duck" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nrxus/engine_duck"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nrxus/engine_duck'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8ebacbe78c85de1dbe4d4372e844f761da140ab2
[INFO] sha for GitHub repo nrxus/engine_duck: 8ebacbe78c85de1dbe4d4372e844f761da140ab2
[INFO] validating manifest of nrxus/engine_duck 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 nrxus/engine_duck 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 nrxus/engine_duck
[INFO] finished frobbing nrxus/engine_duck
[INFO] frobbed toml for nrxus/engine_duck written to work/ex/beta-1.38-1/sources/1.37.0/gh/nrxus/engine_duck/Cargo.toml
[INFO] started frobbing nrxus/engine_duck
[INFO] finished frobbing nrxus/engine_duck
[INFO] frobbed toml for nrxus/engine_duck written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nrxus/engine_duck/Cargo.toml
[INFO] crate nrxus/engine_duck 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 nrxus/engine_duck against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/nrxus/engine_duck:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 33677dbaf83b4a4be3ccaba21f5e531d29e8dced993961895ebea5045d15e934
[INFO] running `"docker" "start" "-a" "33677dbaf83b4a4be3ccaba21f5e531d29e8dced993961895ebea5045d15e934"`
[INFO] [stderr]    Compiling num-bigint v0.1.44
[INFO] [stderr]    Compiling syn v0.15.18
[INFO] [stderr]    Compiling env_logger v0.3.5
[INFO] [stderr]    Compiling quickcheck v0.2.27
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling sdl2 v0.31.0
[INFO] [stderr]    Compiling glm v0.2.3
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]    Compiling moho-derive v0.1.0 (https://github.com/nrxus/moho#1259f0e0)
[INFO] [stderr]    Compiling failure v0.1.3
[INFO] [stderr]    Compiling moho v0.0.10 (https://github.com/nrxus/moho#1259f0e0)
[INFO] [stderr]    Compiling serde v1.0.80
[INFO] [stderr]    Compiling serde_yaml v0.8.7
[INFO] [stderr]    Compiling engine_duck v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `load`
[INFO] [stderr]   --> src/data/level.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     pub fn load(path: &'static str) -> Result<Self> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `create`
[INFO] [stderr]   --> src/game/score_repository.rs:22:1
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub fn create(entries: &[Score]) -> Result<()> {
[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/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/duck_husky_wedding-8c126ea3cdc6d71e.duck_husky_wedding.1juuzfl6-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/duck_husky_wedding-8c126ea3cdc6d71e.duck_husky_wedding.1juuzfl6-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/duck_husky_wedding-8c126ea3cdc6d71e.duck_husky_wedding.1juuzfl6-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/duck_husky_wedding-8c126ea3cdc6d71e.duck_husky_wedding.1juuzfl6-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/duck_husky_wedding-8c126ea3cdc6d71e.duck_husky_wedding.1juuzfl6-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/duck_husky_wedding-8c126ea3cdc6d71e.duck_husky_wedding.1juuzfl6-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/duck_husky_wedding-8c126ea3cdc6d71e.duck_husky_wedding.1juuzfl6-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/duck_husky_wedding-8c126ea3cdc6d71e.duck_husky_wedding.1juuzfl6-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/duck_husky_wedding-8c126ea3cdc6d71e.duck_husky_wedding.1juuzfl6-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/duck_husky_wedding-8c126ea3cdc6d71e.duck_husky_wedding.1juuzfl6-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/duck_husky_wedding-8c126ea3cdc6d71e.duck_husky_wedding.1juuzfl6-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/duck_husky_wedding-8c126ea3cdc6d71e.duck_husky_wedding.1juuzfl6-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/duck_husky_wedding-8c126ea3cdc6d71e.duck_husky_wedding.1juuzfl6-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/duck_husky_wedding-8c126ea3cdc6d71e.duck_husky_wedding.1juuzfl6-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/duck_husky_wedding-8c126ea3cdc6d71e.duck_husky_wedding.1juuzfl6-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/duck_husky_wedding-8c126ea3cdc6d71e.duck_husky_wedding.1juuzfl6-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/duck_husky_wedding-8c126ea3cdc6d71e" "/opt/crater/target/debug/deps/duck_husky_wedding-8c126ea3cdc6d71e.2d43ja4u0wbzbg11.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-33695c002b92845b/out" "-L" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/libserde_yaml-56d567fe11214108.rlib" "/opt/crater/target/debug/deps/libyaml_rust-9acfd4b1d80323f8.rlib" "/opt/crater/target/debug/deps/liblinked_hash_map-3cb577ab32156d8a.rlib" "/opt/crater/target/debug/deps/libdtoa-ea489d40b5ee3357.rlib" "/opt/crater/target/debug/deps/libserde-5f3a98fa05692af5.rlib" "/opt/crater/target/debug/deps/libmoho-8238672acc3be328.rlib" "/opt/crater/target/debug/deps/libfailure-66aa3fca7aeb13db.rlib" "/opt/crater/target/debug/deps/libbacktrace-b71fce614735ed6c.rlib" "/opt/crater/target/debug/deps/libbacktrace_sys-6b15f76a17f69dfb.rlib" "/opt/crater/target/debug/deps/librustc_demangle-671ddd545bd5b66c.rlib" "/opt/crater/target/debug/deps/libglm-49c09e06b406bcd2.rlib" "/opt/crater/target/debug/deps/libquickcheck-369b9dec3851a33e.rlib" "/opt/crater/target/debug/deps/libenv_logger-393514074718deee.rlib" "/opt/crater/target/debug/deps/libregex-ab7eccbc91ff15b7.rlib" "/opt/crater/target/debug/deps/libutf8_ranges-7e19cf98379531b4.rlib" "/opt/crater/target/debug/deps/libregex_syntax-55ee28c5615612af.rlib" "/opt/crater/target/debug/deps/libthread_local-4065f64a3e0e6287.rlib" "/opt/crater/target/debug/deps/libthread_id-2aaa904fe04365a1.rlib" "/opt/crater/target/debug/deps/libaho_corasick-7f6582541b0516be.rlib" "/opt/crater/target/debug/deps/libmemchr-4ceebf7f6bf92f02.rlib" "/opt/crater/target/debug/deps/liblog-dbb57e1f5ac0b9a0.rlib" "/opt/crater/target/debug/deps/liblog-60511ed71c6d9c96.rlib" "/opt/crater/target/debug/deps/libcfg_if-3f691fa550e97962.rlib" "/opt/crater/target/debug/deps/libsdl2-6e02a42f9d128012.rlib" "/opt/crater/target/debug/deps/librand-38bcbb9f261db4a2.rlib" "/opt/crater/target/debug/deps/libsdl2_sys-da49c22bc7c18b91.rlib" "/opt/crater/target/debug/deps/libbitflags-05fa20c47058c1db.rlib" "/opt/crater/target/debug/deps/liblazy_static-0c9d1899e9eae559.rlib" "/opt/crater/target/debug/deps/libnum-7f4e290e9488b57b.rlib" "/opt/crater/target/debug/deps/libnum_rational-ea888c2f458a643c.rlib" "/opt/crater/target/debug/deps/libnum_bigint-7c5166c23b003c74.rlib" "/opt/crater/target/debug/deps/librand-b1e03a2e62a72ad1.rlib" "/opt/crater/target/debug/deps/liblibc-96489a6b7aca76d0.rlib" "/opt/crater/target/debug/deps/libnum_complex-8a2d521989e0ba4c.rlib" "/opt/crater/target/debug/deps/librustc_serialize-cc29b8ffd74fbfca.rlib" "/opt/crater/target/debug/deps/libnum_iter-8673f0b69b432df1.rlib" "/opt/crater/target/debug/deps/libnum_integer-4efe0f2dadd87400.rlib" "/opt/crater/target/debug/deps/libnum_traits-86600a016bc21e91.rlib" "-Wl,--start-group" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-4a76ff35a356aedf.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-e11c7b3b3225afe2.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-13217ede3d276f16.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-621a9ee22da6caa1.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-546c844e8071bbeb.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-be9569e4d599746f.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-47d8845cef2a3bc5.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-017511bce73a530c.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-be7979c57a08057b.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-d6459c4f0817c67c.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-580035dd98451925.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-aee5c24fff305dea.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-8a55a4098920125a.rlib" "-Wl,--end-group" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-9fc4b5be2ba5cc19.rlib" "-Wl,-Bdynamic" "-lSDL2_ttf" "-lSDL2_image" "-lSDL2" "-lutil" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil"
[INFO] [stderr]   = note: /usr/bin/ld: cannot find -lSDL2_ttf
[INFO] [stderr]           /usr/bin/ld: cannot find -lSDL2_image
[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 `engine_duck`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "33677dbaf83b4a4be3ccaba21f5e531d29e8dced993961895ebea5045d15e934"`
[INFO] running `"docker" "rm" "-f" "33677dbaf83b4a4be3ccaba21f5e531d29e8dced993961895ebea5045d15e934"`
[INFO] [stdout] 33677dbaf83b4a4be3ccaba21f5e531d29e8dced993961895ebea5045d15e934