[INFO] cloning repository https://github.com/jamesetaylor3/caribou-os
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jamesetaylor3/caribou-os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjamesetaylor3%2Fcaribou-os", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjamesetaylor3%2Fcaribou-os'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dd919a231455bff79530f15662fa29894b80c417
[INFO] checking jamesetaylor3/caribou-os against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjamesetaylor3%2Fcaribou-os" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jamesetaylor3/caribou-os on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jamesetaylor3/caribou-os
[INFO] finished tweaking git repo https://github.com/jamesetaylor3/caribou-os
[INFO] tweaked toml for git repo https://github.com/jamesetaylor3/caribou-os written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/jamesetaylor3/caribou-os already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ea8ef5a8facdaf96360a1e359e73e1fa96c1af1f851d82452fa6b9b572be2e76
[INFO] running `Command { std: "docker" "start" "-a" "ea8ef5a8facdaf96360a1e359e73e1fa96c1af1f851d82452fa6b9b572be2e76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ea8ef5a8facdaf96360a1e359e73e1fa96c1af1f851d82452fa6b9b572be2e76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea8ef5a8facdaf96360a1e359e73e1fa96c1af1f851d82452fa6b9b572be2e76", kill_on_drop: false }`
[INFO] [stdout] ea8ef5a8facdaf96360a1e359e73e1fa96c1af1f851d82452fa6b9b572be2e76
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 12d47cbfa7b389601c0eb975b76a3c0a05b58081ec8f0f9ff60ffc789df537ad
[INFO] running `Command { std: "docker" "start" "-a" "12d47cbfa7b389601c0eb975b76a3c0a05b58081ec8f0f9ff60ffc789df537ad", kill_on_drop: false }`
[INFO] [stderr] error: "/opt/rustwide/rustup-home/toolchains/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/lib/rustlib/src/rust/Cargo.lock" does not exist, unable to build with the standard library, try:
[INFO] [stderr]         rustup component add rust-src
[INFO] running `Command { std: "docker" "inspect" "12d47cbfa7b389601c0eb975b76a3c0a05b58081ec8f0f9ff60ffc789df537ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12d47cbfa7b389601c0eb975b76a3c0a05b58081ec8f0f9ff60ffc789df537ad", kill_on_drop: false }`
[INFO] [stdout] 12d47cbfa7b389601c0eb975b76a3c0a05b58081ec8f0f9ff60ffc789df537ad