[INFO] cloning repository https://github.com/drbawb/ubuffer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/drbawb/ubuffer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdrbawb%2Fubuffer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdrbawb%2Fubuffer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e38b06640825a477a50f67740949daa0fb958c7c
[INFO] checking drbawb/ubuffer against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdrbawb%2Fubuffer" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/drbawb/ubuffer on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/drbawb/ubuffer
[INFO] finished tweaking git repo https://github.com/drbawb/ubuffer
[INFO] tweaked toml for git repo https://github.com/drbawb/ubuffer written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/drbawb/ubuffer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "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] 0f0e6e5139dc25d41eaa79b93ad051475623f0f2e6ef4a933f190b7375764f48
[INFO] running `Command { std: "docker" "start" "-a" "0f0e6e5139dc25d41eaa79b93ad051475623f0f2e6ef4a933f190b7375764f48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0f0e6e5139dc25d41eaa79b93ad051475623f0f2e6ef4a933f190b7375764f48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f0e6e5139dc25d41eaa79b93ad051475623f0f2e6ef4a933f190b7375764f48", kill_on_drop: false }`
[INFO] [stdout] 0f0e6e5139dc25d41eaa79b93ad051475623f0f2e6ef4a933f190b7375764f48
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "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] 299c00cd9a622730bffde68c62c8d7a456736b762adfb0ddc735bcefc05d2d27
[INFO] running `Command { std: "docker" "start" "-a" "299c00cd9a622730bffde68c62c8d7a456736b762adfb0ddc735bcefc05d2d27", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.27
[INFO] [stderr]     Checking rand_core v0.3.0
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]    Compiling autocfg v0.1.1
[INFO] [stderr]    Compiling serde v1.0.82
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]     Checking rustc-demangle v0.1.11
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking regex-syntax v0.6.4
[INFO] [stderr]     Checking humantime v1.2.0
[INFO] [stderr]     Checking base64 v0.10.0
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]    Compiling rand_chacha v0.1.0
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]    Compiling rand v0.6.1
[INFO] [stderr]    Compiling syn v0.15.23
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.0
[INFO] [stderr]    Compiling backtrace v0.3.13
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]    Compiling libudt4-sys v0.2.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.26
[INFO] [stderr]    Compiling ring v0.13.5
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]     Checking env_logger v0.6.0
[INFO] [stderr]     Checking bincode v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.82
[INFO] [stderr]     Checking failure v0.1.3
[INFO] [stderr]     Checking udt v0.2.0
[INFO] [stderr]     Checking ubuffer v0.4.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 54.75s
[INFO] running `Command { std: "docker" "inspect" "299c00cd9a622730bffde68c62c8d7a456736b762adfb0ddc735bcefc05d2d27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "299c00cd9a622730bffde68c62c8d7a456736b762adfb0ddc735bcefc05d2d27", kill_on_drop: false }`
[INFO] [stdout] 299c00cd9a622730bffde68c62c8d7a456736b762adfb0ddc735bcefc05d2d27