[INFO] cloning repository https://github.com/cuiter/aicourse
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cuiter/aicourse" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcuiter%2Faicourse", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcuiter%2Faicourse'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 407cbf21dfefe91dea0ac1aafee1ac03cbf88e81
[INFO] testing cuiter/aicourse against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcuiter%2Faicourse" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cuiter/aicourse on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cuiter/aicourse
[INFO] finished tweaking git repo https://github.com/cuiter/aicourse
[INFO] tweaked toml for git repo https://github.com/cuiter/aicourse written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/cuiter/aicourse already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bd240144ebb738b70e728e91b777233fa0aa635fe34358a162b0c0a59ba0da1b
[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" "bd240144ebb738b70e728e91b777233fa0aa635fe34358a162b0c0a59ba0da1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bd240144ebb738b70e728e91b777233fa0aa635fe34358a162b0c0a59ba0da1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd240144ebb738b70e728e91b777233fa0aa635fe34358a162b0c0a59ba0da1b", kill_on_drop: false }`
[INFO] [stdout] bd240144ebb738b70e728e91b777233fa0aa635fe34358a162b0c0a59ba0da1b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7a5d7cbef52edfc36cf8764aeccb9b10bd72398f65a05fc0b60028127c188c57
[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" "7a5d7cbef52edfc36cf8764aeccb9b10bd72398f65a05fc0b60028127c188c57", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.7.1
[INFO] [stderr]    Compiling rawpointer v0.2.1
[INFO] [stderr]    Compiling ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling ndarray v0.13.1
[INFO] [stderr]    Compiling either v1.6.0
[INFO] [stderr]    Compiling sdl2 v0.34.2
[INFO] [stderr]    Compiling sdl2-sys v0.34.2
[INFO] [stderr]    Compiling matrixmultiply v0.2.3
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling rayon v1.3.1
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling rscam v0.5.5
[INFO] [stderr]    Compiling crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling aicourse v0.1.0 (/opt/rustwide/workdir/aicourse)
[INFO] [stderr]    Compiling aicourse-webcam v0.1.0 (/opt/rustwide/workdir/aicourse-webcam)
[INFO] [stderr]    Compiling aicourse-train v0.1.0 (/opt/rustwide/workdir/aicourse-train)
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-m64" "/opt/rustwide/target/debug/deps/aicourse_webcam-2ac4f697c111df96.aicourse_webcam.1804e25f-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/aicourse_webcam-2ac4f697c111df96.aicourse_webcam.1804e25f-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/aicourse_webcam-2ac4f697c111df96.aicourse_webcam.1804e25f-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/aicourse_webcam-2ac4f697c111df96.aicourse_webcam.1804e25f-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/aicourse_webcam-2ac4f697c111df96.aicourse_webcam.1804e25f-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/aicourse_webcam-2ac4f697c111df96.aicourse_webcam.1804e25f-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/aicourse_webcam-2ac4f697c111df96.aicourse_webcam.1804e25f-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/aicourse_webcam-2ac4f697c111df96.aicourse_webcam.1804e25f-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/aicourse_webcam-2ac4f697c111df96.aicourse_webcam.1804e25f-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/aicourse_webcam-2ac4f697c111df96.aicourse_webcam.1804e25f-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/aicourse_webcam-2ac4f697c111df96.aicourse_webcam.1804e25f-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/aicourse_webcam-2ac4f697c111df96.aicourse_webcam.1804e25f-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/aicourse_webcam-2ac4f697c111df96.aicourse_webcam.1804e25f-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/aicourse_webcam-2ac4f697c111df96.aicourse_webcam.1804e25f-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/aicourse_webcam-2ac4f697c111df96.aicourse_webcam.1804e25f-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/aicourse_webcam-2ac4f697c111df96.aicourse_webcam.1804e25f-cgu.9.rcgu.o" "/opt/rustwide/target/debug/deps/aicourse_webcam-2ac4f697c111df96.57hwjndrp5giaakh.rcgu.o" "-Wl,--as-needed" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/a77da2d454e6caa227a85b16410b95f93495e7e0/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/librscam-6dd5b25cbf2e4b71.rlib" "/opt/rustwide/target/debug/deps/libaicourse-1b6926ddb7cba5cd.rlib" "/opt/rustwide/target/debug/deps/librand_pcg-a4d18c705c9a6a7c.rlib" "/opt/rustwide/target/debug/deps/librand-5ae7394489085c81.rlib" "/opt/rustwide/target/debug/deps/librand_chacha-f3f00d672b31f283.rlib" "/opt/rustwide/target/debug/deps/libppv_lite86-ad67993fbfd47f61.rlib" "/opt/rustwide/target/debug/deps/librand_core-d3645c1835ec20be.rlib" "/opt/rustwide/target/debug/deps/libgetrandom-af3dd0ff05743368.rlib" "/opt/rustwide/target/debug/deps/librayon-0dea31573800a894.rlib" "/opt/rustwide/target/debug/deps/librayon_core-364d3d4402b4a26a.rlib" "/opt/rustwide/target/debug/deps/libnum_cpus-d727803c5e269296.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_deque-06121df51a3dcbd4.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_epoch-d98ebbd2699ccc99.rlib" "/opt/rustwide/target/debug/deps/libscopeguard-ff2bb1f39834214d.rlib" "/opt/rustwide/target/debug/deps/libmemoffset-772034eca31f8ede.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_queue-437ba9e0e3064a1f.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_utils-15d02b042ccb7e12.rlib" "/opt/rustwide/target/debug/deps/libmaybe_uninit-6eeb474ed04b0fb7.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-81c3651d70dd4895.rlib" "/opt/rustwide/target/debug/deps/libeither-e984fcb595be0116.rlib" "/opt/rustwide/target/debug/deps/libndarray-e3a6e8c63f04a1cb.rlib" "/opt/rustwide/target/debug/deps/libmatrixmultiply-aba66c443f5e259a.rlib" "/opt/rustwide/target/debug/deps/libnum_complex-5ca254e0ae3bdf78.rlib" "/opt/rustwide/target/debug/deps/libnum_integer-8c0527806d1aa558.rlib" "/opt/rustwide/target/debug/deps/libnum_traits-6f8c62b8067178cd.rlib" "/opt/rustwide/target/debug/deps/librawpointer-9b15b747fdb4e961.rlib" "/opt/rustwide/target/debug/deps/libsdl2-306a6667fc701e02.rlib" "/opt/rustwide/target/debug/deps/libsdl2_sys-5a17bfd416eac3d1.rlib" "/opt/rustwide/target/debug/deps/libbitflags-6d05264d59b50f7f.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-b33cd6b8ee13db74.rlib" "/opt/rustwide/target/debug/deps/liblibc-332a289f87bfc192.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/a77da2d454e6caa227a85b16410b95f93495e7e0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-29e5e596e889a0aa.rlib" "/opt/rustwide/rustup-home/toolchains/a77da2d454e6caa227a85b16410b95f93495e7e0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-1b145d9fcdc08832.rlib" "/opt/rustwide/rustup-home/toolchains/a77da2d454e6caa227a85b16410b95f93495e7e0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-5b037ee6b77e2ff0.rlib" "/opt/rustwide/rustup-home/toolchains/a77da2d454e6caa227a85b16410b95f93495e7e0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-9635a64fca0ebd28.rlib" "/opt/rustwide/rustup-home/toolchains/a77da2d454e6caa227a85b16410b95f93495e7e0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-a7574eb9bb7a8fc5.rlib" "/opt/rustwide/rustup-home/toolchains/a77da2d454e6caa227a85b16410b95f93495e7e0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libmemchr-f5fa1dc334dcaeeb.rlib" "/opt/rustwide/rustup-home/toolchains/a77da2d454e6caa227a85b16410b95f93495e7e0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-6ee570a898e75ef0.rlib" "/opt/rustwide/rustup-home/toolchains/a77da2d454e6caa227a85b16410b95f93495e7e0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-afb62f29a0815772.rlib" "/opt/rustwide/rustup-home/toolchains/a77da2d454e6caa227a85b16410b95f93495e7e0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd_detect-a632746535fd9988.rlib" "/opt/rustwide/rustup-home/toolchains/a77da2d454e6caa227a85b16410b95f93495e7e0/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-25acc307bcb1d7b6.rlib" "/opt/rustwide/rustup-home/toolchains/a77da2d454e6caa227a85b16410b95f93495e7e0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-377721a625f6ace7.rlib" "/opt/rustwide/rustup-home/toolchains/a77da2d454e6caa227a85b16410b95f93495e7e0/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-43c01431c8a4ee6f.rlib" "/opt/rustwide/rustup-home/toolchains/a77da2d454e6caa227a85b16410b95f93495e7e0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-5f74725679453254.rlib" "/opt/rustwide/rustup-home/toolchains/a77da2d454e6caa227a85b16410b95f93495e7e0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-2b35d8999819161d.rlib" "/opt/rustwide/rustup-home/toolchains/a77da2d454e6caa227a85b16410b95f93495e7e0/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-a81f2980c3f58cf2.rlib" "/opt/rustwide/rustup-home/toolchains/a77da2d454e6caa227a85b16410b95f93495e7e0/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-57b4679830289815.rlib" "/opt/rustwide/rustup-home/toolchains/a77da2d454e6caa227a85b16410b95f93495e7e0/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-2a6a2797f7a73818.rlib" "/opt/rustwide/rustup-home/toolchains/a77da2d454e6caa227a85b16410b95f93495e7e0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-0e3656b1fda5fd7b.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/a77da2d454e6caa227a85b16410b95f93495e7e0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-13b419dfbcf9c1f8.rlib" "-Wl,-Bdynamic" "-lv4l2" "-lSDL2" "-lutil" "-ldl" "-lutil" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-L" "/opt/rustwide/rustup-home/toolchains/a77da2d454e6caa227a85b16410b95f93495e7e0/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/deps/aicourse_webcam-2ac4f697c111df96" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro,-znow" "-nodefaultlibs"
[INFO] [stdout]   = note: /usr/bin/ld: cannot find -lv4l2
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `aicourse-webcam` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "7a5d7cbef52edfc36cf8764aeccb9b10bd72398f65a05fc0b60028127c188c57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a5d7cbef52edfc36cf8764aeccb9b10bd72398f65a05fc0b60028127c188c57", kill_on_drop: false }`
[INFO] [stdout] 7a5d7cbef52edfc36cf8764aeccb9b10bd72398f65a05fc0b60028127c188c57