[INFO] updating cached repository https://github.com/cassaundra/backlight
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 36bd9a0740ad2737fdf5554396abb750a67b3114
[INFO] testing cassaundra/backlight against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcassaundra%2Fbacklight" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cassaundra/backlight on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/cassaundra/backlight
[INFO] finished tweaking git repo https://github.com/cassaundra/backlight
[INFO] tweaked toml for git repo https://github.com/cassaundra/backlight written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/cassaundra/backlight already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b6193a46f6e3a39697ffd926eccc083fdb86798c92898ac61384410c5630798f
[INFO] running `"docker" "start" "-a" "b6193a46f6e3a39697ffd926eccc083fdb86798c92898ac61384410c5630798f"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling autocfg v0.1.5
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]    Compiling scrap v0.5.0
[INFO] [stderr]    Compiling portmidi v0.2.4
[INFO] [stderr]    Compiling block v0.1.6
[INFO] [stderr]    Compiling phf v0.7.24
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling palette v0.4.1
[INFO] [stderr]    Compiling palette_derive v0.4.1
[INFO] [stderr]    Compiling launchpad v1.0.0 (https://github.com/cassaundra/launch-rs.git#105cf8ef)
[INFO] [stderr]    Compiling backlight v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `count`
[INFO] [stderr]   --> src/main.rs:35:7
[INFO] [stderr]    |
[INFO] [stderr] 35 |         let count = (buffer.len() / 4) as u128;
[INFO] [stderr]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_count`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:14:2
[INFO] [stderr]    |
[INFO] [stderr] 14 |     launchpad.light_all_raw(0);
[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:74:5
[INFO] [stderr]    |
[INFO] [stderr] 74 |                 launchpad.light_single(7 - pad_x as u8, 7 - pad_y as u8, &color);
[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/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/backlight-1c3f1cebe1f21cad.backlight.6genh93a-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/backlight-1c3f1cebe1f21cad.backlight.6genh93a-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/backlight-1c3f1cebe1f21cad.backlight.6genh93a-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/backlight-1c3f1cebe1f21cad.backlight.6genh93a-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/backlight-1c3f1cebe1f21cad.backlight.6genh93a-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/backlight-1c3f1cebe1f21cad.backlight.6genh93a-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/backlight-1c3f1cebe1f21cad.backlight.6genh93a-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/backlight-1c3f1cebe1f21cad.backlight.6genh93a-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/backlight-1c3f1cebe1f21cad.backlight.6genh93a-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/backlight-1c3f1cebe1f21cad.backlight.6genh93a-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/backlight-1c3f1cebe1f21cad.backlight.6genh93a-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/backlight-1c3f1cebe1f21cad.backlight.6genh93a-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/backlight-1c3f1cebe1f21cad.backlight.6genh93a-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/backlight-1c3f1cebe1f21cad.backlight.6genh93a-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/backlight-1c3f1cebe1f21cad.backlight.6genh93a-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/backlight-1c3f1cebe1f21cad.backlight.6genh93a-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/backlight-1c3f1cebe1f21cad" "/opt/rustwide/target/debug/deps/backlight-1c3f1cebe1f21cad.2iruc5ueinmhtz46.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/liblaunchpad-c4a9ff324c54f4fc.rlib" "/opt/rustwide/target/debug/deps/libportmidi-736a6a5c9c1fbdae.rlib" "/opt/rustwide/target/debug/deps/libpalette-76e65030d6e06754.rlib" "/opt/rustwide/target/debug/deps/libphf-49868a6ef625e4ab.rlib" "/opt/rustwide/target/debug/deps/libphf_shared-b81885939469b324.rlib" "/opt/rustwide/target/debug/deps/libsiphasher-a8dae4f504067954.rlib" "/opt/rustwide/target/debug/deps/libnum_traits-7dd1ad4d9b1da490.rlib" "/opt/rustwide/target/debug/deps/libapprox-784a355a158982c4.rlib" "/opt/rustwide/target/debug/deps/libscrap-127e0d41090f24a1.rlib" "/opt/rustwide/target/debug/deps/liblibc-64020fc9ebf99f99.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-1bfa4eb209c6e5e2.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-44f8eb3d0b2fad61.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-abc626f09920d361.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-546e83c8973f1a65.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-12768dfc68674934.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-e06867e4497f2ee8.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-cbc579f43f6df57b.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-7abd6d5a7ebf9a23.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-46423c7bc03bd327.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-fc3773ed7bc68f07.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-9cdc98176efd27e2.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-02d88502a763e06b.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-8cdc9d38dd6cd3ce.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-336f7d63e72901ef.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/beta-2020-06-03-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-57917b1be5233117.rlib" "-Wl,-Bdynamic" "-lportmidi" "-lxcb" "-lxcb-shm" "-lxcb-randr" "-lutil" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-ldl" "-lutil"
[INFO] [stderr]   = note: /usr/bin/ld: cannot find -lportmidi
[INFO] [stderr]           collect2: error: ld returned 1 exit status
[INFO] [stderr]           
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error; 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `backlight`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "b6193a46f6e3a39697ffd926eccc083fdb86798c92898ac61384410c5630798f"`
[INFO] running `"docker" "rm" "-f" "b6193a46f6e3a39697ffd926eccc083fdb86798c92898ac61384410c5630798f"`
[INFO] [stdout] b6193a46f6e3a39697ffd926eccc083fdb86798c92898ac61384410c5630798f