[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] c825a166d2859a276dea44b572fe700c57bd1170
[INFO] testing cuiter/aicourse against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcuiter%2Faicourse" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cuiter/aicourse on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "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-6/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" "+b70888601af92f6cdc0364abab3446e418b91d36" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 26f71b180d18a872c786a8631bef5ff472bf3468cc62f747a9a607e5ee472642
[INFO] running `Command { std: "docker" "start" "-a" "26f71b180d18a872c786a8631bef5ff472bf3468cc62f747a9a607e5ee472642", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "26f71b180d18a872c786a8631bef5ff472bf3468cc62f747a9a607e5ee472642", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26f71b180d18a872c786a8631bef5ff472bf3468cc62f747a9a607e5ee472642", kill_on_drop: false }`
[INFO] [stdout] 26f71b180d18a872c786a8631bef5ff472bf3468cc62f747a9a607e5ee472642
[INFO] running `Command { std: "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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5884f4a16d681bd04b3f875d82a4d2f45c094a25c6b14231fa8cdf0d0b4905cb
[INFO] running `Command { std: "docker" "start" "-a" "5884f4a16d681bd04b3f875d82a4d2f45c094a25c6b14231fa8cdf0d0b4905cb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling version-compare v0.0.10
[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 unicode-width v0.1.8
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]    Compiling num-traits v0.2.12
[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 crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling sdl2-sys v0.34.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling crossbeam-deque v0.7.3
[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 clap v2.33.3
[INFO] [stderr]    Compiling rayon-core v1.7.1
[INFO] [stderr]    Compiling rand_core v0.5.1
[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-train v0.1.0 (/opt/rustwide/workdir/aicourse-train)
[INFO] [stderr]    Compiling aicourse-webcam v0.1.0 (/opt/rustwide/workdir/aicourse-webcam)
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-m64" "/opt/rustwide/target/debug/deps/aicourse_webcam-6aa8910b85533287.aicourse_webcam.bfc78ac3-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/aicourse_webcam-6aa8910b85533287.aicourse_webcam.bfc78ac3-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/aicourse_webcam-6aa8910b85533287.aicourse_webcam.bfc78ac3-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/aicourse_webcam-6aa8910b85533287.aicourse_webcam.bfc78ac3-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/aicourse_webcam-6aa8910b85533287.aicourse_webcam.bfc78ac3-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/aicourse_webcam-6aa8910b85533287.aicourse_webcam.bfc78ac3-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/aicourse_webcam-6aa8910b85533287.aicourse_webcam.bfc78ac3-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/aicourse_webcam-6aa8910b85533287.aicourse_webcam.bfc78ac3-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/aicourse_webcam-6aa8910b85533287.aicourse_webcam.bfc78ac3-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/aicourse_webcam-6aa8910b85533287.aicourse_webcam.bfc78ac3-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/aicourse_webcam-6aa8910b85533287.aicourse_webcam.bfc78ac3-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/aicourse_webcam-6aa8910b85533287.aicourse_webcam.bfc78ac3-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/aicourse_webcam-6aa8910b85533287.aicourse_webcam.bfc78ac3-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/aicourse_webcam-6aa8910b85533287.aicourse_webcam.bfc78ac3-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/aicourse_webcam-6aa8910b85533287.aicourse_webcam.bfc78ac3-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/aicourse_webcam-6aa8910b85533287.aicourse_webcam.bfc78ac3-cgu.9.rcgu.o" "/opt/rustwide/target/debug/deps/aicourse_webcam-6aa8910b85533287.14fkdbn39pk9irmp.rcgu.o" "-Wl,--as-needed" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/librscam-1367d24db108afbc.rlib" "/opt/rustwide/target/debug/deps/libaicourse-a191658b29971d33.rlib" "/opt/rustwide/target/debug/deps/librand_pcg-44f85ea78396e8d2.rlib" "/opt/rustwide/target/debug/deps/librand-1f98de904eee4cab.rlib" "/opt/rustwide/target/debug/deps/librand_chacha-1447aa9974e7edaf.rlib" "/opt/rustwide/target/debug/deps/libppv_lite86-3d2cc82b4e39af48.rlib" "/opt/rustwide/target/debug/deps/librand_core-8f6d0438fd2edfe0.rlib" "/opt/rustwide/target/debug/deps/libgetrandom-39a9c80295c72164.rlib" "/opt/rustwide/target/debug/deps/librayon-f2cd72209d9dc746.rlib" "/opt/rustwide/target/debug/deps/librayon_core-d42f9bb30d83a3a8.rlib" "/opt/rustwide/target/debug/deps/libnum_cpus-65d4a8f0b50d03af.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_deque-462a7e7c0f5957b5.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_epoch-7086be3c0923fa41.rlib" "/opt/rustwide/target/debug/deps/libscopeguard-4b059ff10415273f.rlib" "/opt/rustwide/target/debug/deps/libmemoffset-b6b3578a720575f4.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_queue-ba0bac4fbaf6e09d.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_utils-c317c8196d2f12cd.rlib" "/opt/rustwide/target/debug/deps/libmaybe_uninit-535c06e7d7e0b10d.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-de9cbe0cb77e19a3.rlib" "/opt/rustwide/target/debug/deps/libeither-2a006e962ac8fb0a.rlib" "/opt/rustwide/target/debug/deps/libndarray-8f112296f819fda3.rlib" "/opt/rustwide/target/debug/deps/libmatrixmultiply-b399655b44b9903e.rlib" "/opt/rustwide/target/debug/deps/libnum_complex-efc5d9d7de4e55a9.rlib" "/opt/rustwide/target/debug/deps/libnum_integer-52354559db7718ae.rlib" "/opt/rustwide/target/debug/deps/libnum_traits-04a9caef1d4853e7.rlib" "/opt/rustwide/target/debug/deps/librawpointer-39cffec714dbe003.rlib" "/opt/rustwide/target/debug/deps/libsdl2-32f81e9d34d89030.rlib" "/opt/rustwide/target/debug/deps/libsdl2_sys-57cbfdb8601d32b7.rlib" "/opt/rustwide/target/debug/deps/libbitflags-603a79344a96ee73.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-f67718dd40129317.rlib" "/opt/rustwide/target/debug/deps/liblibc-d38a74d34e7a1c45.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-9c44f1fe63de3edb.rlib" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-5dfdbb680ac299a1.rlib" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-353beaf877db2fdf.rlib" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-cd4abd33332d2d3f.rlib" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-3b908b5b50ddd80c.rlib" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-9cafd3521b5532d3.rlib" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-7b0935832903a9ac.rlib" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd_detect-8a349b13d67c76e3.rlib" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-9d41e7cb09eafd8e.rlib" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-095194fedb4c0ec4.rlib" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-968cf83f088269ec.rlib" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-e63bbb95a6beff5c.rlib" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-9f216e67c2916fa5.rlib" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-4688b763605c6a0e.rlib" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-a9b2dc3244289321.rlib" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-52d5241975807511.rlib" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-9924c22ae1efcf66.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-003d83a588984e1f.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/b70888601af92f6cdc0364abab3446e418b91d36/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/deps/aicourse_webcam-6aa8910b85533287" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-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" "5884f4a16d681bd04b3f875d82a4d2f45c094a25c6b14231fa8cdf0d0b4905cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5884f4a16d681bd04b3f875d82a4d2f45c094a25c6b14231fa8cdf0d0b4905cb", kill_on_drop: false }`
[INFO] [stdout] 5884f4a16d681bd04b3f875d82a4d2f45c094a25c6b14231fa8cdf0d0b4905cb