[INFO] cloning repository https://github.com/yxProgramming/APEX-2020-FRC-Code
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yxProgramming/APEX-2020-FRC-Code" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FyxProgramming%2FAPEX-2020-FRC-Code", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FyxProgramming%2FAPEX-2020-FRC-Code'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 49b0e7e62048efccc67e79c9c676c5ea6c3f5952
[INFO] testing yxProgramming/APEX-2020-FRC-Code against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FyxProgramming%2FAPEX-2020-FRC-Code" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yxProgramming/APEX-2020-FRC-Code on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-2/source/.cargo/config
[INFO] started tweaking git repo https://github.com/yxProgramming/APEX-2020-FRC-Code
[INFO] finished tweaking git repo https://github.com/yxProgramming/APEX-2020-FRC-Code
[INFO] tweaked toml for git repo https://github.com/yxProgramming/APEX-2020-FRC-Code written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/yxProgramming/APEX-2020-FRC-Code already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wpilib v0.4.0
[INFO] [stderr]   Downloaded wpilib-sys v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2c1b294c99a0e3cb8d514b6b78617e826310411858e8e33fa69342a32c0206db
[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" "2c1b294c99a0e3cb8d514b6b78617e826310411858e8e33fa69342a32c0206db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c1b294c99a0e3cb8d514b6b78617e826310411858e8e33fa69342a32c0206db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c1b294c99a0e3cb8d514b6b78617e826310411858e8e33fa69342a32c0206db", kill_on_drop: false }`
[INFO] [stdout] 2c1b294c99a0e3cb8d514b6b78617e826310411858e8e33fa69342a32c0206db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e6a6a8d64ca59cd49182fba1e22b909526d0ddc1d35c0fc2fa94ed5d0b7af56f
[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" "e6a6a8d64ca59cd49182fba1e22b909526d0ddc1d35c0fc2fa94ed5d0b7af56f", kill_on_drop: false }`
[INFO] [stderr]    Compiling wpilib-sys v0.4.0
[INFO] [stderr]    Compiling wpilib v0.4.0
[INFO] [stderr]    Compiling frc_robot_2020 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `robot`
[INFO] [stdout]  --> src/main.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let robot = RobotBase::new().expect("HAL FAILED");
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_robot`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: linking with `cc` failed: exit code: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-Wl,--eh-frame-hdr" "-L" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/frc_robot_2020-9fa06cf35b5429a1.frc_robot_2020.24tx8l8o-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/frc_robot_2020-9fa06cf35b5429a1.frc_robot_2020.24tx8l8o-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/frc_robot_2020-9fa06cf35b5429a1.frc_robot_2020.24tx8l8o-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/frc_robot_2020-9fa06cf35b5429a1.frc_robot_2020.24tx8l8o-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/frc_robot_2020-9fa06cf35b5429a1.frc_robot_2020.24tx8l8o-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/frc_robot_2020-9fa06cf35b5429a1.frc_robot_2020.24tx8l8o-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/frc_robot_2020-9fa06cf35b5429a1.frc_robot_2020.24tx8l8o-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/frc_robot_2020-9fa06cf35b5429a1.frc_robot_2020.24tx8l8o-cgu.7.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/frc_robot_2020-9fa06cf35b5429a1" "/opt/rustwide/target/debug/deps/frc_robot_2020-9fa06cf35b5429a1.4uf502wwaavxurvs.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/wpilib-sys-0.4.0/lib" "-L" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libwpilib-efe7418082b23500.rlib" "/opt/rustwide/target/debug/deps/libwpilib_sys-24edd37a45c78857.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-b2d06f7d60fcbb27.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-7444fd17919e9af0.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-0ee2f67026959ab7.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-df1bcd1e82256d04.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-ed9ecf1b54021131.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-0ede66bb24e94b96.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-7c2de7f50940865c.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-b138d50085fd4683.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-6576870d8f2b9ae2.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-042a30c5f67b2c91.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-7b3f33d3dbe385dc.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-90b3063cd7b22527.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-17f9484f8dc4da1e.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-df38345acd9d92e1.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-a5e10ca10bdd9e54.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-9e5b4162eeef2cef.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-3a4e739a77468800.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-0f3a0c116d5e04d6.rlib" "-Wl,-Bdynamic" "-lFRC_NetworkCommunication" "-lNiFpga" "-lNiFpgaLv" "-lniriodevenum" "-lniriosession" "-lNiRioSrv" "-lRoboRIO_FRC_ChipObject" "-lvisa" "-lwpiHal" "-lwpiutil" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc"
[INFO] [stdout]   = note: /usr/bin/ld: skipping incompatible /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/wpilib-sys-0.4.0/lib/libFRC_NetworkCommunication.so when searching for -lFRC_NetworkCommunication
[INFO] [stdout]           /usr/bin/ld: cannot find -lFRC_NetworkCommunication
[INFO] [stdout]           /usr/bin/ld: skipping incompatible /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/wpilib-sys-0.4.0/lib/libNiFpga.so when searching for -lNiFpga
[INFO] [stdout]           /usr/bin/ld: cannot find -lNiFpga
[INFO] [stdout]           /usr/bin/ld: skipping incompatible /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/wpilib-sys-0.4.0/lib/libNiFpgaLv.so when searching for -lNiFpgaLv
[INFO] [stdout]           /usr/bin/ld: cannot find -lNiFpgaLv
[INFO] [stdout]           /usr/bin/ld: skipping incompatible /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/wpilib-sys-0.4.0/lib/libniriodevenum.so when searching for -lniriodevenum
[INFO] [stdout]           /usr/bin/ld: cannot find -lniriodevenum
[INFO] [stdout]           /usr/bin/ld: skipping incompatible /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/wpilib-sys-0.4.0/lib/libniriosession.so when searching for -lniriosession
[INFO] [stdout]           /usr/bin/ld: cannot find -lniriosession
[INFO] [stdout]           /usr/bin/ld: skipping incompatible /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/wpilib-sys-0.4.0/lib/libNiRioSrv.so when searching for -lNiRioSrv
[INFO] [stdout]           /usr/bin/ld: cannot find -lNiRioSrv
[INFO] [stdout]           /usr/bin/ld: skipping incompatible /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/wpilib-sys-0.4.0/lib/libRoboRIO_FRC_ChipObject.so when searching for -lRoboRIO_FRC_ChipObject
[INFO] [stdout]           /usr/bin/ld: cannot find -lRoboRIO_FRC_ChipObject
[INFO] [stdout]           /usr/bin/ld: skipping incompatible /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/wpilib-sys-0.4.0/lib/libvisa.so when searching for -lvisa
[INFO] [stdout]           /usr/bin/ld: cannot find -lvisa
[INFO] [stdout]           /usr/bin/ld: skipping incompatible /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/wpilib-sys-0.4.0/lib/libwpiHal.so when searching for -lwpiHal
[INFO] [stdout]           /usr/bin/ld: cannot find -lwpiHal
[INFO] [stdout]           /usr/bin/ld: skipping incompatible /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/wpilib-sys-0.4.0/lib/libwpiutil.so when searching for -lwpiutil
[INFO] [stdout]           /usr/bin/ld: cannot find -lwpiutil
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `frc_robot_2020`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "e6a6a8d64ca59cd49182fba1e22b909526d0ddc1d35c0fc2fa94ed5d0b7af56f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6a6a8d64ca59cd49182fba1e22b909526d0ddc1d35c0fc2fa94ed5d0b7af56f", kill_on_drop: false }`
[INFO] [stdout] e6a6a8d64ca59cd49182fba1e22b909526d0ddc1d35c0fc2fa94ed5d0b7af56f