[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-1.38-1/sources/1.37.0/gh/pixlark/rust-2048"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/pixlark/rust-2048'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/pixlark/rust-2048" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pixlark/rust-2048"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/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 1.37.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of pixlark/rust-2048 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 pixlark/rust-2048 [INFO] finished frobbing pixlark/rust-2048 [INFO] frobbed toml for pixlark/rust-2048 written to work/ex/beta-1.38-1/sources/1.37.0/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-1.38-1/sources/beta-2019-08-13/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" "+1.37.0" "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 pixlark/rust-2048 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/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" "+1.37.0" "build" "--frozen"` [INFO] [stdout] 7a715e9d5da8d301ebddb6706f48097253c1ff5225baf69d8ad87fdfef43008c [INFO] running `"docker" "start" "-a" "7a715e9d5da8d301ebddb6706f48097253c1ff5225baf69d8ad87fdfef43008c"` [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 v0.4.3 [INFO] [stderr] Compiling num v0.1.42 [INFO] [stderr] Compiling rand v0.6.1 [INFO] [stderr] Compiling rand v0.3.22 [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/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/game_2048-2ed54284e209e3a9.game_2048.40zp2u7v-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/game_2048-2ed54284e209e3a9.game_2048.40zp2u7v-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/game_2048-2ed54284e209e3a9.game_2048.40zp2u7v-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/game_2048-2ed54284e209e3a9.game_2048.40zp2u7v-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/game_2048-2ed54284e209e3a9.game_2048.40zp2u7v-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/game_2048-2ed54284e209e3a9.game_2048.40zp2u7v-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/game_2048-2ed54284e209e3a9.game_2048.40zp2u7v-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/game_2048-2ed54284e209e3a9.game_2048.40zp2u7v-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/game_2048-2ed54284e209e3a9.game_2048.40zp2u7v-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/game_2048-2ed54284e209e3a9.game_2048.40zp2u7v-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/game_2048-2ed54284e209e3a9.game_2048.40zp2u7v-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/game_2048-2ed54284e209e3a9.game_2048.40zp2u7v-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/game_2048-2ed54284e209e3a9.game_2048.40zp2u7v-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/game_2048-2ed54284e209e3a9.game_2048.40zp2u7v-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/game_2048-2ed54284e209e3a9.game_2048.40zp2u7v-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/game_2048-2ed54284e209e3a9.game_2048.40zp2u7v-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/game_2048-2ed54284e209e3a9" "/opt/crater/target/debug/deps/game_2048-2ed54284e209e3a9.2rjgf90xt3884ypc.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-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/liblazy_static-024dbe6825df62a4.rlib" "/opt/crater/target/debug/deps/libsdl2-af9f94a329383cef.rlib" "/opt/crater/target/debug/deps/librand-ccd78f055675ea08.rlib" "/opt/crater/target/debug/deps/librand-eabddd27f7f6a3d9.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-afb29d0cf2165d85.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" "/opt/crater/target/debug/deps/librand-46060a6724fed23c.rlib" "/opt/crater/target/debug/deps/liblibc-724ab7746a37ab24.rlib" "/opt/crater/target/debug/deps/librand_xorshift-358bc239bef7c4e5.rlib" "/opt/crater/target/debug/deps/librand_pcg-9bed347662758de4.rlib" "/opt/crater/target/debug/deps/librand_hc-6a64bd9792c35560.rlib" "/opt/crater/target/debug/deps/librand_chacha-5525c5cf1b59dc63.rlib" "/opt/crater/target/debug/deps/librand_isaac-959479901c7dea70.rlib" "/opt/crater/target/debug/deps/librand_core-562aeeaf733cf7c9.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" "-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" "7a715e9d5da8d301ebddb6706f48097253c1ff5225baf69d8ad87fdfef43008c"` [INFO] running `"docker" "rm" "-f" "7a715e9d5da8d301ebddb6706f48097253c1ff5225baf69d8ad87fdfef43008c"` [INFO] [stdout] 7a715e9d5da8d301ebddb6706f48097253c1ff5225baf69d8ad87fdfef43008c