[INFO] updating cached repository pixlark/rust-2048 [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/pixlark/rust-2048 [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/pixlark/rust-2048" "work/ex/beta-1.37-6/sources/1.36.0/gh/pixlark/rust-2048"` [INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/pixlark/rust-2048'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/pixlark/rust-2048" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/pixlark/rust-2048"` [INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/pixlark/rust-2048'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 5c4cad366c974d5471e6db2a1b727b8c9133b342 [INFO] sha for GitHub repo pixlark/rust-2048: 5c4cad366c974d5471e6db2a1b727b8c9133b342 [INFO] validating manifest of pixlark/rust-2048 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 pixlark/rust-2048 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 pixlark/rust-2048 [INFO] finished frobbing pixlark/rust-2048 [INFO] frobbed toml for pixlark/rust-2048 written to work/ex/beta-1.37-6/sources/1.36.0/gh/pixlark/rust-2048/Cargo.toml [INFO] started frobbing pixlark/rust-2048 [INFO] finished frobbing pixlark/rust-2048 [INFO] frobbed toml for pixlark/rust-2048 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/pixlark/rust-2048/Cargo.toml [INFO] crate pixlark/rust-2048 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 pixlark/rust-2048 against beta-2019-07-23 for beta-1.37-6 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/pixlark/rust-2048:/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-2019-07-23" "build" "--frozen"` [INFO] [stdout] 09d50f4157eb5ae07a0fababc601a080ea4f23f86cb5b1b5978a9ef52df51664 [INFO] running `"docker" "start" "-a" "09d50f4157eb5ae07a0fababc601a080ea4f23f86cb5b1b5978a9ef52df51664"` [INFO] [stderr] Compiling num-integer v0.1.39 [INFO] [stderr] Compiling game-2048 v0.1.0 (/opt/crater/workdir) [INFO] [stderr] Compiling sdl2-sys v0.31.0 [INFO] [stderr] Compiling rand_isaac v0.1.0 [INFO] [stderr] Compiling rand v0.6.1 [INFO] [stderr] Compiling num-iter v0.1.37 [INFO] [stderr] Compiling num v0.1.42 [INFO] [stderr] Compiling sdl2 v0.31.0 [INFO] [stderr] warning: unused import: `sdl2::video::WindowContext` [INFO] [stderr] --> src/main.rs:15:5 [INFO] [stderr] | [INFO] [stderr] 15 | use sdl2::video::WindowContext; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: type `v2` should have an upper camel case name [INFO] [stderr] --> src/main.rs:44:8 [INFO] [stderr] | [INFO] [stderr] 44 | struct v2 { [INFO] [stderr] | ^^ help: convert the identifier to upper camel case: `V2` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(non_camel_case_types)] on by default [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'rand::Rng::choose': use SliceRandom::choose instead [INFO] [stderr] --> src/main.rs:267:32 [INFO] [stderr] | [INFO] [stderr] 267 | let choice: u64 = *rng.choose(&[2, 4]).unwrap(); [INFO] [stderr] | ^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(deprecated)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `state_stack` [INFO] [stderr] --> src/main.rs:321:13 [INFO] [stderr] | [INFO] [stderr] 321 | let mut state_stack: Vec> = Vec::new(); [INFO] [stderr] | ^^^^^^^^^^^ help: consider prefixing with an underscore: `_state_stack` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:321:9 [INFO] [stderr] | [INFO] [stderr] 321 | let mut state_stack: Vec> = Vec::new(); [INFO] [stderr] | ----^^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_mut)] on by default [INFO] [stderr] [INFO] [stderr] warning: method is never used: `get_fitness` [INFO] [stderr] --> src/main.rs:270:5 [INFO] [stderr] | [INFO] [stderr] 270 | fn get_fitness(&self) -> usize { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `PlayingState` [INFO] [stderr] --> src/main.rs:301:1 [INFO] [stderr] | [INFO] [stderr] 301 | struct PlayingState { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: static variable `color_map` should have an upper case name [INFO] [stderr] --> src/main.rs:27:16 [INFO] [stderr] | [INFO] [stderr] 27 | static ref color_map: HashMap = { [INFO] [stderr] | ^^^^^^^^^ help: convert the identifier to upper case: `COLOR_MAP` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(non_upper_case_globals)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:159:21 [INFO] [stderr] | [INFO] [stderr] 159 | / canvas.copy( [INFO] [stderr] 160 | | &texture, [INFO] [stderr] 161 | | None, [INFO] [stderr] 162 | | Some(Rect::new( [INFO] [stderr] ... | [INFO] [stderr] 167 | | )), [INFO] [stderr] 168 | | ); [INFO] [stderr] | |______________________^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_must_use)] on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [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-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/game_2048-8717606522cda802.game_2048.1z1ropfc-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/game_2048-8717606522cda802.game_2048.1z1ropfc-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/game_2048-8717606522cda802.game_2048.1z1ropfc-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/game_2048-8717606522cda802.game_2048.1z1ropfc-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/game_2048-8717606522cda802.game_2048.1z1ropfc-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/game_2048-8717606522cda802.game_2048.1z1ropfc-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/game_2048-8717606522cda802.game_2048.1z1ropfc-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/game_2048-8717606522cda802.game_2048.1z1ropfc-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/game_2048-8717606522cda802.game_2048.1z1ropfc-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/game_2048-8717606522cda802.game_2048.1z1ropfc-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/game_2048-8717606522cda802.game_2048.1z1ropfc-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/game_2048-8717606522cda802.game_2048.1z1ropfc-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/game_2048-8717606522cda802.game_2048.1z1ropfc-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/game_2048-8717606522cda802.game_2048.1z1ropfc-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/game_2048-8717606522cda802.game_2048.1z1ropfc-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/game_2048-8717606522cda802.game_2048.1z1ropfc-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/game_2048-8717606522cda802" "/opt/crater/target/debug/deps/game_2048-8717606522cda802.4q6yhd71g39p8a98.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/liblazy_static-6758b07bea2a83cb.rlib" "/opt/crater/target/debug/deps/libsdl2-893bfa73f3b84745.rlib" "/opt/crater/target/debug/deps/librand-50ac49218de7ad14.rlib" "/opt/crater/target/debug/deps/librand-5ff711d960a84769.rlib" "/opt/crater/target/debug/deps/libsdl2_sys-42b30a28781cb6a1.rlib" "/opt/crater/target/debug/deps/libbitflags-e424d0a7dda42873.rlib" "/opt/crater/target/debug/deps/liblazy_static-0e1e36676eed3924.rlib" "/opt/crater/target/debug/deps/libnum-6d1c41becdc658de.rlib" "/opt/crater/target/debug/deps/libnum_iter-6a53ebaecf43d64b.rlib" "/opt/crater/target/debug/deps/libnum_integer-3e4b662ece72588f.rlib" "/opt/crater/target/debug/deps/libnum_traits-b0613bcbd790bfdc.rlib" "/opt/crater/target/debug/deps/librand-a1a37c3cb091691f.rlib" "/opt/crater/target/debug/deps/liblibc-dd2098d9bf30d378.rlib" "/opt/crater/target/debug/deps/librand_xorshift-e4175971b0eedd8b.rlib" "/opt/crater/target/debug/deps/librand_pcg-a99eb8994209efbf.rlib" "/opt/crater/target/debug/deps/librand_hc-1a031fb5dbbfb4e7.rlib" "/opt/crater/target/debug/deps/librand_chacha-d91d5d797b9b0b3f.rlib" "/opt/crater/target/debug/deps/librand_isaac-4c91238f55fb3c7b.rlib" "/opt/crater/target/debug/deps/librand_core-0169ea5a612ef054.rlib" "-Wl,--start-group" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-a80a1e8e09cafef8.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-e0e6351da805c468.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-e04f54bafc95e331.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-67901d3322495bd5.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-bd390b1abaceaec1.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-312dd37fdc7bedfc.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-8ed0e51d58d644a3.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-8a423c320a6c707f.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-d6a95598e2238263.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-d231614b153016eb.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-3821619027f463e4.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-1cfd794d18771a44.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-dcf33cf10c2452ef.rlib" "-Wl,--end-group" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-c258fea34bf64bce.rlib" "-Wl,-Bdynamic" "-lSDL2_ttf" "-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] 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 `game-2048`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "09d50f4157eb5ae07a0fababc601a080ea4f23f86cb5b1b5978a9ef52df51664"` [INFO] running `"docker" "rm" "-f" "09d50f4157eb5ae07a0fababc601a080ea4f23f86cb5b1b5978a9ef52df51664"` [INFO] [stdout] 09d50f4157eb5ae07a0fababc601a080ea4f23f86cb5b1b5978a9ef52df51664