[INFO] fetching crate animal_chess 0.1.1...
[INFO] testing animal_chess-0.1.1 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate animal_chess 0.1.1 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate animal_chess 0.1.1 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate animal_chess 0.1.1
[INFO] finished tweaking crates.io crate animal_chess 0.1.1
[INFO] tweaked toml for crates.io crate animal_chess 0.1.1 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate animal_chess 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d9a2b37a2560c001c50e8ccd25be5dbbb6b6c4d6b13f25b4427ebe0b5290c240
[INFO] running `Command { std: "docker" "start" "-a" "d9a2b37a2560c001c50e8ccd25be5dbbb6b6c4d6b13f25b4427ebe0b5290c240", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d9a2b37a2560c001c50e8ccd25be5dbbb6b6c4d6b13f25b4427ebe0b5290c240", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9a2b37a2560c001c50e8ccd25be5dbbb6b6c4d6b13f25b4427ebe0b5290c240", kill_on_drop: false }`
[INFO] [stdout] d9a2b37a2560c001c50e8ccd25be5dbbb6b6c4d6b13f25b4427ebe0b5290c240
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4b48b6afafe0d427f91a840360fbe5aaba33aaade179e8036998ae213e175f44
[INFO] running `Command { std: "docker" "start" "-a" "4b48b6afafe0d427f91a840360fbe5aaba33aaade179e8036998ae213e175f44", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling sdl2 v0.34.0
[INFO] [stderr]    Compiling sdl2-sys v0.34.0
[INFO] [stderr]    Compiling animal_chess v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Duration`
[INFO] [stdout]  --> src/ai.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::time::{Duration, Instant};
[INFO] [stdout]   |                 ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `max_depth` is assigned to, but never used
[INFO] [stdout]    --> src/ai.rs:123:17
[INFO] [stdout]     |
[INFO] [stdout] 123 |         let mut max_depth = 0;
[INFO] [stdout]     |                 ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]     = note: consider using `_max_depth` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `max_depth` is never read
[INFO] [stdout]    --> src/ai.rs:129:13
[INFO] [stdout]     |
[INFO] [stdout] 129 |             max_depth = d;
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-m64" "/opt/rustwide/target/debug/deps/animal_chess-a5fab92c16784443.animal_chess.f0755b48-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/animal_chess-a5fab92c16784443.animal_chess.f0755b48-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/animal_chess-a5fab92c16784443.animal_chess.f0755b48-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/animal_chess-a5fab92c16784443.animal_chess.f0755b48-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/animal_chess-a5fab92c16784443.animal_chess.f0755b48-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/animal_chess-a5fab92c16784443.animal_chess.f0755b48-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/animal_chess-a5fab92c16784443.animal_chess.f0755b48-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/animal_chess-a5fab92c16784443.animal_chess.f0755b48-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/animal_chess-a5fab92c16784443.animal_chess.f0755b48-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/animal_chess-a5fab92c16784443.animal_chess.f0755b48-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/animal_chess-a5fab92c16784443.animal_chess.f0755b48-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/animal_chess-a5fab92c16784443.animal_chess.f0755b48-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/animal_chess-a5fab92c16784443.animal_chess.f0755b48-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/animal_chess-a5fab92c16784443.animal_chess.f0755b48-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/animal_chess-a5fab92c16784443.animal_chess.f0755b48-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/animal_chess-a5fab92c16784443.animal_chess.f0755b48-cgu.9.rcgu.o" "/opt/rustwide/target/debug/deps/animal_chess-a5fab92c16784443.2hmqzl92mlybldxr.rcgu.o" "-Wl,--as-needed" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/beta-2022-04-10-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libsdl2-2116803b20ae34f0.rlib" "/opt/rustwide/target/debug/deps/libsdl2_sys-65678ea39cba7ec9.rlib" "/opt/rustwide/target/debug/deps/libbitflags-c6d9dc90f7379932.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-86422d76b8bd90ed.rlib" "/opt/rustwide/target/debug/deps/liblibc-1eaaee8e9ee1e8f2.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/beta-2022-04-10-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-ff9290e971253a38.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2022-04-10-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-5534b29ea7b2d8f5.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2022-04-10-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-8bfbb13072fc2761.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2022-04-10-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libmemchr-d6d1fa92fa620f17.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2022-04-10-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-7cfd201521727d95.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2022-04-10-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-0e8010e8fce8e5a7.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2022-04-10-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-19093fec3c6dd913.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2022-04-10-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd_detect-89c4cbe9256c1890.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2022-04-10-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-73e4507673363945.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2022-04-10-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-3fe98c0f46f27964.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2022-04-10-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-a76787f08d45e37d.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2022-04-10-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-8cea480e62c5b261.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2022-04-10-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-1fb939608cd05a1c.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2022-04-10-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-842e67e3ab562f66.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2022-04-10-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-0c1c8fec3b1a54cc.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2022-04-10-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-689faa634b72af17.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2022-04-10-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-6c2c561a8181be5e.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2022-04-10-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-88c4d85fe493b0a6.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/beta-2022-04-10-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-f5394bdb1df5df01.rlib" "-Wl,-Bdynamic" "-lSDL2" "-lSDL2_image" "-lutil" "-ldl" "-lutil" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-L" "/opt/rustwide/rustup-home/toolchains/beta-2022-04-10-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/deps/animal_chess-a5fab92c16784443" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro,-znow" "-nodefaultlibs"
[INFO] [stdout]   = note: /usr/bin/ld: cannot find -lSDL2_image
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `animal_chess` due to 2 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "4b48b6afafe0d427f91a840360fbe5aaba33aaade179e8036998ae213e175f44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b48b6afafe0d427f91a840360fbe5aaba33aaade179e8036998ae213e175f44", kill_on_drop: false }`
[INFO] [stdout] 4b48b6afafe0d427f91a840360fbe5aaba33aaade179e8036998ae213e175f44