[INFO] updating cached repository pixlark/rust-chess
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/pixlark/rust-chess
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/pixlark/rust-chess" "work/ex/beta-1.38-1/sources/1.37.0/gh/pixlark/rust-chess"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/pixlark/rust-chess'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/pixlark/rust-chess" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pixlark/rust-chess"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pixlark/rust-chess'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5574de551476386e7c852d19d296848b03d0bd15
[INFO] sha for GitHub repo pixlark/rust-chess: 5574de551476386e7c852d19d296848b03d0bd15
[INFO] validating manifest of pixlark/rust-chess 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-chess 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-chess
[INFO] finished frobbing pixlark/rust-chess
[INFO] frobbed toml for pixlark/rust-chess written to work/ex/beta-1.38-1/sources/1.37.0/gh/pixlark/rust-chess/Cargo.toml
[INFO] started frobbing pixlark/rust-chess
[INFO] finished frobbing pixlark/rust-chess
[INFO] frobbed toml for pixlark/rust-chess written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pixlark/rust-chess/Cargo.toml
[INFO] crate pixlark/rust-chess 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-chess 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/pixlark/rust-chess:/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] f0afd256926dda83d4754af8bb28f9a02b7fdbc74b8563f5f3eb555ff3bf48ec
[INFO] running `"docker" "start" "-a" "f0afd256926dda83d4754af8bb28f9a02b7fdbc74b8563f5f3eb555ff3bf48ec"`
[INFO] [stderr]    Compiling sdl2-sys v0.31.0
[INFO] [stderr]    Compiling sdl2 v0.31.0
[INFO] [stderr]    Compiling game v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/main.rs:418:13
[INFO] [stderr]     |
[INFO] [stderr] 418 |             _ => panic!("Movement not implemented for this yet..."),
[INFO] [stderr]     |             ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unreachable_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sdl_image_context`
[INFO] [stderr]    --> src/main.rs:590:9
[INFO] [stderr]     |
[INFO] [stderr] 590 |     let sdl_image_context = image::init(image::InitFlag::all()).unwrap();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_sdl_image_context`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/main.rs:85:13
[INFO] [stderr]    |
[INFO] [stderr] 85 |         for i in 0..3 {
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `flipped`
[INFO] [stderr]   --> src/main.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     fn flipped(self: &Side) -> Side {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `starting`
[INFO] [stderr]    --> src/main.rs:203:5
[INFO] [stderr]     |
[INFO] [stderr] 203 |     fn starting() -> Board {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `capture_on_line`
[INFO] [stderr]    --> src/main.rs:263:5
[INFO] [stderr]     |
[INFO] [stderr] 263 | /     fn capture_on_line(
[INFO] [stderr] 264 | |         self: &Board,
[INFO] [stderr] 265 | |         side: Side,
[INFO] [stderr] 266 | |         pos: Pos,
[INFO] [stderr] ...   |
[INFO] [stderr] 284 | |         None
[INFO] [stderr] 285 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:468:9
[INFO] [stderr]     |
[INFO] [stderr] 468 | /         canvas.copy(
[INFO] [stderr] 469 | |             texture_table.table[tex_index.0][tex_index.1]
[INFO] [stderr] 470 | |                 .as_ref()
[INFO] [stderr] 471 | |                 .unwrap(),
[INFO] [stderr] ...   |
[INFO] [stderr] 478 | |             )),
[INFO] [stderr] 479 | |         );
[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] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:570:13
[INFO] [stderr]     |
[INFO] [stderr] 570 | /             canvas.copy(
[INFO] [stderr] 571 | |                 texture_table.table[tex_index.0][tex_index.1]
[INFO] [stderr] 572 | |                     .as_ref()
[INFO] [stderr] 573 | |                     .unwrap(),
[INFO] [stderr] ...   |
[INFO] [stderr] 580 | |                 )),
[INFO] [stderr] 581 | |             );
[INFO] [stderr]     | |______________^
[INFO] [stderr]     |
[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-c13ae9e996888a46.game.8hhggjbi-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/game-c13ae9e996888a46.game.8hhggjbi-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/game-c13ae9e996888a46.game.8hhggjbi-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/game-c13ae9e996888a46.game.8hhggjbi-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/game-c13ae9e996888a46.game.8hhggjbi-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/game-c13ae9e996888a46.game.8hhggjbi-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/game-c13ae9e996888a46.game.8hhggjbi-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/game-c13ae9e996888a46.game.8hhggjbi-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/game-c13ae9e996888a46.game.8hhggjbi-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/game-c13ae9e996888a46.game.8hhggjbi-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/game-c13ae9e996888a46.game.8hhggjbi-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/game-c13ae9e996888a46.game.8hhggjbi-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/game-c13ae9e996888a46.game.8hhggjbi-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/game-c13ae9e996888a46.game.8hhggjbi-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/game-c13ae9e996888a46.game.8hhggjbi-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/game-c13ae9e996888a46.game.8hhggjbi-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/game-c13ae9e996888a46" "/opt/crater/target/debug/deps/game-c13ae9e996888a46.31xajhm2ovgeo0b6.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/libsdl2-3fbc147fd888367b.rlib" "/opt/crater/target/debug/deps/librand-38bcbb9f261db4a2.rlib" "/opt/crater/target/debug/deps/librand-b1e03a2e62a72ad1.rlib" "/opt/crater/target/debug/deps/libsdl2_sys-08ea4c01873f9e6b.rlib" "/opt/crater/target/debug/deps/libbitflags-05fa20c47058c1db.rlib" "/opt/crater/target/debug/deps/liblazy_static-0c9d1899e9eae559.rlib" "/opt/crater/target/debug/deps/liblibc-96489a6b7aca76d0.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" "-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_image" "-lSDL2" "-lutil" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil"
[INFO] [stderr]   = note: /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 `game`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "f0afd256926dda83d4754af8bb28f9a02b7fdbc74b8563f5f3eb555ff3bf48ec"`
[INFO] running `"docker" "rm" "-f" "f0afd256926dda83d4754af8bb28f9a02b7fdbc74b8563f5f3eb555ff3bf48ec"`
[INFO] [stdout] f0afd256926dda83d4754af8bb28f9a02b7fdbc74b8563f5f3eb555ff3bf48ec