[INFO] fetching crate animal_chess 0.1.1...
[INFO] testing animal_chess-0.1.1 against 1.54.0 for beta-1.55-1
[INFO] extracting crate animal_chess 0.1.1 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate animal_chess 0.1.1 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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-14/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" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 666977ed101bb196d643e250d3d3a293bbf774c912dce3847e2ccd6d6b93643b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "666977ed101bb196d643e250d3d3a293bbf774c912dce3847e2ccd6d6b93643b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "666977ed101bb196d643e250d3d3a293bbf774c912dce3847e2ccd6d6b93643b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "666977ed101bb196d643e250d3d3a293bbf774c912dce3847e2ccd6d6b93643b", kill_on_drop: false }`
[INFO] [stdout] 666977ed101bb196d643e250d3d3a293bbf774c912dce3847e2ccd6d6b93643b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9f5571d7996c4f9c306f28c311b7cdd0b31a73ccc0351ecbf148e25762a0ebf5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9f5571d7996c4f9c306f28c311b7cdd0b31a73ccc0351ecbf148e25762a0ebf5", 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-56b6b25bfdf88048.animal_chess.89znpjlz-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/animal_chess-56b6b25bfdf88048.animal_chess.89znpjlz-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/animal_chess-56b6b25bfdf88048.animal_chess.89znpjlz-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/animal_chess-56b6b25bfdf88048.animal_chess.89znpjlz-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/animal_chess-56b6b25bfdf88048.animal_chess.89znpjlz-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/animal_chess-56b6b25bfdf88048.animal_chess.89znpjlz-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/animal_chess-56b6b25bfdf88048.animal_chess.89znpjlz-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/animal_chess-56b6b25bfdf88048.animal_chess.89znpjlz-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/animal_chess-56b6b25bfdf88048.animal_chess.89znpjlz-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/animal_chess-56b6b25bfdf88048.animal_chess.89znpjlz-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/animal_chess-56b6b25bfdf88048.animal_chess.89znpjlz-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/animal_chess-56b6b25bfdf88048.animal_chess.89znpjlz-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/animal_chess-56b6b25bfdf88048.animal_chess.89znpjlz-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/animal_chess-56b6b25bfdf88048.animal_chess.89znpjlz-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/animal_chess-56b6b25bfdf88048.animal_chess.89znpjlz-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/animal_chess-56b6b25bfdf88048.animal_chess.89znpjlz-cgu.9.rcgu.o" "/opt/rustwide/target/debug/deps/animal_chess-56b6b25bfdf88048.22pia9u3t5l43b7v.rcgu.o" "-Wl,--as-needed" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libsdl2-6c4ad8a068816049.rlib" "/opt/rustwide/target/debug/deps/libsdl2_sys-6dfc4cad185dc548.rlib" "/opt/rustwide/target/debug/deps/libbitflags-f89ae4b715176e2d.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-5c53d641eb010a81.rlib" "/opt/rustwide/target/debug/deps/liblibc-f14f9a5269b59615.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-2420485b9e5ef5e1.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-785e3cb61c4b1960.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-087191a88bdaa22d.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-9981842c02975178.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-6fb405869b015fde.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-d05c5c3c56004b7b.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-42d74d2097528b38.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd_detect-fb36534c113d2209.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-b56b9042c12b6535.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-491902d6cb3e76df.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-61834e0981b8c367.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-f78aa99d613a55bc.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-53ee54cd7fed2c57.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-544ecdbd6cda3c58.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-379cc252b6943a79.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-8063eea38dcc5e62.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-5b228734afae15ee.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-d6c7a399d95d173f.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/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/deps/animal_chess-56b6b25bfdf88048" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-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`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "9f5571d7996c4f9c306f28c311b7cdd0b31a73ccc0351ecbf148e25762a0ebf5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f5571d7996c4f9c306f28c311b7cdd0b31a73ccc0351ecbf148e25762a0ebf5", kill_on_drop: false }`
[INFO] [stdout] 9f5571d7996c4f9c306f28c311b7cdd0b31a73ccc0351ecbf148e25762a0ebf5
