[INFO] cloning repository https://github.com/jadeaffenjaeger/rust_connect_four
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jadeaffenjaeger/rust_connect_four" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjadeaffenjaeger%2Frust_connect_four", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjadeaffenjaeger%2Frust_connect_four'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b851577953258e3d251a6b07bc7168d6a5de7571
[INFO] testing jadeaffenjaeger/rust_connect_four against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjadeaffenjaeger%2Frust_connect_four" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jadeaffenjaeger/rust_connect_four 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 git repo https://github.com/jadeaffenjaeger/rust_connect_four
[INFO] finished tweaking git repo https://github.com/jadeaffenjaeger/rust_connect_four
[INFO] tweaked toml for git repo https://github.com/jadeaffenjaeger/rust_connect_four written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/jadeaffenjaeger/rust_connect_four 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] eb9142194e94c2aff540f0968bc7b02654802d245d4749e0c5a2b3d0f90f8267
[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" "eb9142194e94c2aff540f0968bc7b02654802d245d4749e0c5a2b3d0f90f8267", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb9142194e94c2aff540f0968bc7b02654802d245d4749e0c5a2b3d0f90f8267", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb9142194e94c2aff540f0968bc7b02654802d245d4749e0c5a2b3d0f90f8267", kill_on_drop: false }`
[INFO] [stdout] eb9142194e94c2aff540f0968bc7b02654802d245d4749e0c5a2b3d0f90f8267
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 410c326d322f7f0a816b8a8aa408a9ea026fe35bef77649501b17c0c7d35a896
[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" "410c326d322f7f0a816b8a8aa408a9ea026fe35bef77649501b17c0c7d35a896", kill_on_drop: false }`
[INFO] [stderr]    Compiling sdl2 v0.34.5
[INFO] [stderr]    Compiling c_vec v2.0.0
[INFO] [stderr]    Compiling sdl2-sys v0.34.5
[INFO] [stderr]    Compiling connect_four v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/game.rs:86:23
[INFO] [stdout]    |
[INFO] [stdout] 86 |             .filter(|(i, &num)| num < NUM_ROWS)
[INFO] [stdout]    |                       ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[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/connect_four-d3ca36960c2546b2.connect_four.2fbvcgtd-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/connect_four-d3ca36960c2546b2.connect_four.2fbvcgtd-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/connect_four-d3ca36960c2546b2.connect_four.2fbvcgtd-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/connect_four-d3ca36960c2546b2.connect_four.2fbvcgtd-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/connect_four-d3ca36960c2546b2.connect_four.2fbvcgtd-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/connect_four-d3ca36960c2546b2.connect_four.2fbvcgtd-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/connect_four-d3ca36960c2546b2.connect_four.2fbvcgtd-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/connect_four-d3ca36960c2546b2.connect_four.2fbvcgtd-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/connect_four-d3ca36960c2546b2.connect_four.2fbvcgtd-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/connect_four-d3ca36960c2546b2.connect_four.2fbvcgtd-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/connect_four-d3ca36960c2546b2.connect_four.2fbvcgtd-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/connect_four-d3ca36960c2546b2.connect_four.2fbvcgtd-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/connect_four-d3ca36960c2546b2.connect_four.2fbvcgtd-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/connect_four-d3ca36960c2546b2.connect_four.2fbvcgtd-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/connect_four-d3ca36960c2546b2.connect_four.2fbvcgtd-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/connect_four-d3ca36960c2546b2.connect_four.2fbvcgtd-cgu.9.rcgu.o" "/opt/rustwide/target/debug/deps/connect_four-d3ca36960c2546b2.3ihgtfbrg8u8rkco.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/librand-08af1d871362c2fe.rlib" "/opt/rustwide/target/debug/deps/librand_chacha-cbc694fa134c6e01.rlib" "/opt/rustwide/target/debug/deps/libppv_lite86-545d86392ea1d8e4.rlib" "/opt/rustwide/target/debug/deps/librand_core-8b6215ce75f700d0.rlib" "/opt/rustwide/target/debug/deps/libgetrandom-d801f701964b43b4.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-38c8a3e888ecb06a.rlib" "/opt/rustwide/target/debug/deps/libpetgraph-8d7a2b72a791dcf7.rlib" "/opt/rustwide/target/debug/deps/libindexmap-d8d3c76f0f3a39a5.rlib" "/opt/rustwide/target/debug/deps/libhashbrown-8c5395ff9e9a0462.rlib" "/opt/rustwide/target/debug/deps/libfixedbitset-a6b47c01ebd08ca6.rlib" "/opt/rustwide/target/debug/deps/libsdl2-b4bb019342f23e3f.rlib" "/opt/rustwide/target/debug/deps/libc_vec-9dd5c06e1da9b581.rlib" "/opt/rustwide/target/debug/deps/libsdl2_sys-d3e2a334f8663f19.rlib" "/opt/rustwide/target/debug/deps/libbitflags-f89ae4b715176e2d.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-5c53d641eb010a81.rlib" "/opt/rustwide/target/debug/deps/liblibc-ef703b7b559de845.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_gfx" "-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/connect_four-d3ca36960c2546b2" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs"
[INFO] [stdout]   = note: /usr/bin/ld: cannot find -lSDL2_gfx
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `connect_four`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "410c326d322f7f0a816b8a8aa408a9ea026fe35bef77649501b17c0c7d35a896", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "410c326d322f7f0a816b8a8aa408a9ea026fe35bef77649501b17c0c7d35a896", kill_on_drop: false }`
[INFO] [stdout] 410c326d322f7f0a816b8a8aa408a9ea026fe35bef77649501b17c0c7d35a896
