[INFO] updating cached repository ccapitalK/chippy
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ccapitalK/chippy
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ccapitalK/chippy" "work/ex/beta-1.38-1/sources/1.37.0/gh/ccapitalK/chippy"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/ccapitalK/chippy'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ccapitalK/chippy" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ccapitalK/chippy"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ccapitalK/chippy'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 182b0ac1ddfaa64e1c9b359d08191b10671a852b
[INFO] sha for GitHub repo ccapitalK/chippy: 182b0ac1ddfaa64e1c9b359d08191b10671a852b
[INFO] validating manifest of ccapitalK/chippy 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 ccapitalK/chippy 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 ccapitalK/chippy
[INFO] finished frobbing ccapitalK/chippy
[INFO] frobbed toml for ccapitalK/chippy written to work/ex/beta-1.38-1/sources/1.37.0/gh/ccapitalK/chippy/Cargo.toml
[INFO] started frobbing ccapitalK/chippy
[INFO] finished frobbing ccapitalK/chippy
[INFO] frobbed toml for ccapitalK/chippy written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ccapitalK/chippy/Cargo.toml
[INFO] crate ccapitalK/chippy 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 ccapitalK/chippy 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-0/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/ccapitalK/chippy:/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] 85ca7b58d92c5a9a280a6e27778fb6e3297058591672a8e57239b1be6c53ae6c
[INFO] running `"docker" "start" "-a" "85ca7b58d92c5a9a280a6e27778fb6e3297058591672a8e57239b1be6c53ae6c"`
[INFO] [stderr]    Compiling num v0.1.36
[INFO] [stderr]    Compiling sdl2 v0.31.0
[INFO] [stderr]    Compiling chippy v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `StoreTrue`
[INFO] [stderr]   --> src/main.rs:15:32
[INFO] [stderr]    |
[INFO] [stderr] 15 | use argparse::{ArgumentParser, StoreTrue, Store};
[INFO] [stderr]    |                                ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `audio_context`
[INFO] [stderr]   --> src/main.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let audio_context = contexts.sdl.audio().unwrap();
[INFO] [stderr]    |         ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_audio_context`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_st_active`
[INFO] [stderr]    --> src/cpu.rs:386:5
[INFO] [stderr]     |
[INFO] [stderr] 386 |     pub fn get_st_active(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` 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/chippy-65066b3fbcaaa0d4.chippy.cx02cuyn-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/chippy-65066b3fbcaaa0d4.chippy.cx02cuyn-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/chippy-65066b3fbcaaa0d4.chippy.cx02cuyn-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/chippy-65066b3fbcaaa0d4.chippy.cx02cuyn-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/chippy-65066b3fbcaaa0d4.chippy.cx02cuyn-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/chippy-65066b3fbcaaa0d4.chippy.cx02cuyn-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/chippy-65066b3fbcaaa0d4.chippy.cx02cuyn-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/chippy-65066b3fbcaaa0d4.chippy.cx02cuyn-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/chippy-65066b3fbcaaa0d4.chippy.cx02cuyn-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/chippy-65066b3fbcaaa0d4.chippy.cx02cuyn-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/chippy-65066b3fbcaaa0d4.chippy.cx02cuyn-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/chippy-65066b3fbcaaa0d4.chippy.cx02cuyn-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/chippy-65066b3fbcaaa0d4.chippy.cx02cuyn-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/chippy-65066b3fbcaaa0d4.chippy.cx02cuyn-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/chippy-65066b3fbcaaa0d4.chippy.cx02cuyn-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/chippy-65066b3fbcaaa0d4.chippy.cx02cuyn-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/chippy-65066b3fbcaaa0d4" "/opt/crater/target/debug/deps/chippy-65066b3fbcaaa0d4.50wmcyyxd1rz0lzp.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/libsdl2-f58c26089b617fca.rlib" "/opt/crater/target/debug/deps/libsdl2_sys-6ec9d610426acc19.rlib" "/opt/crater/target/debug/deps/libbitflags-b03ee8d07369378c.rlib" "/opt/crater/target/debug/deps/liblazy_static-5b3a6350224c4bac.rlib" "/opt/crater/target/debug/deps/libnum-21583d9e0585b1d1.rlib" "/opt/crater/target/debug/deps/libnum_iter-0c80d544ba1f8bd7.rlib" "/opt/crater/target/debug/deps/libnum_integer-4739295d8bcfef2e.rlib" "/opt/crater/target/debug/deps/libnum_traits-cf072775152a8823.rlib" "/opt/crater/target/debug/deps/librand-06e6dab173165164.rlib" "/opt/crater/target/debug/deps/liblibc-51eb378bf85f9622.rlib" "/opt/crater/target/debug/deps/libbyteorder-46cb11aad7c12c3b.rlib" "/opt/crater/target/debug/deps/libargparse-da038dabfff49c06.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_ttf" "-lSDL2" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil"
[INFO] [stderr]   = note: /usr/bin/ld: cannot find -lSDL2_ttf
[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 `chippy`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "85ca7b58d92c5a9a280a6e27778fb6e3297058591672a8e57239b1be6c53ae6c"`
[INFO] running `"docker" "rm" "-f" "85ca7b58d92c5a9a280a6e27778fb6e3297058591672a8e57239b1be6c53ae6c"`
[INFO] [stdout] 85ca7b58d92c5a9a280a6e27778fb6e3297058591672a8e57239b1be6c53ae6c