[INFO] cloning repository https://github.com/glennpratt/oci-runtime-spec-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/glennpratt/oci-runtime-spec-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fglennpratt%2Foci-runtime-spec-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fglennpratt%2Foci-runtime-spec-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5470399169c7dc5a1cc1b324afa6515dabb1e1f2
[INFO] documenting glennpratt/oci-runtime-spec-rs against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fglennpratt%2Foci-runtime-spec-rs" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/glennpratt/oci-runtime-spec-rs on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/glennpratt/oci-runtime-spec-rs
[INFO] finished tweaking git repo https://github.com/glennpratt/oci-runtime-spec-rs
[INFO] tweaked toml for git repo https://github.com/glennpratt/oci-runtime-spec-rs written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/glennpratt/oci-runtime-spec-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded darling_macro v0.8.3
[INFO] [stderr]   Downloaded derive_builder_core v0.4.0
[INFO] [stderr]   Downloaded serde_json v1.0.37
[INFO] [stderr]   Downloaded derive_builder v0.7.0
[INFO] [stderr]   Downloaded darling_core v0.8.3
[INFO] [stderr]   Downloaded darling v0.8.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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-2020-08-29" "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] 4ef12af02aa7a4ff98b96ba39123ea2b344bb76ee987a94575bbfd3a05fe3674
[INFO] running `Command { std: "docker" "start" "-a" "4ef12af02aa7a4ff98b96ba39123ea2b344bb76ee987a94575bbfd3a05fe3674", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ef12af02aa7a4ff98b96ba39123ea2b344bb76ee987a94575bbfd3a05fe3674", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ef12af02aa7a4ff98b96ba39123ea2b344bb76ee987a94575bbfd3a05fe3674", kill_on_drop: false }`
[INFO] [stdout] 4ef12af02aa7a4ff98b96ba39123ea2b344bb76ee987a94575bbfd3a05fe3674
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "RUSTDOCFLAGS=--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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7e76e52f0821f71bc14ffa730d34ca924496c1a61ce0e10d674d0ecdc1e69032
[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" "7e76e52f0821f71bc14ffa730d34ca924496c1a61ce0e10d674d0ecdc1e69032", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.26
[INFO] [stderr]    Compiling derive_builder v0.7.0
[INFO] [stderr]     Checking serde_json v1.0.37
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]    Compiling darling_core v0.8.3
[INFO] [stderr]    Compiling serde_derive v1.0.85
[INFO] [stderr]    Compiling darling_macro v0.8.3
[INFO] [stderr]    Compiling darling v0.8.3
[INFO] [stderr]    Compiling derive_builder_core v0.4.0
[INFO] [stderr]  Documenting oci-runtime-spec v0.0.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 48.49s
[INFO] running `Command { std: "docker" "inspect" "7e76e52f0821f71bc14ffa730d34ca924496c1a61ce0e10d674d0ecdc1e69032", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e76e52f0821f71bc14ffa730d34ca924496c1a61ce0e10d674d0ecdc1e69032", kill_on_drop: false }`
[INFO] [stdout] 7e76e52f0821f71bc14ffa730d34ca924496c1a61ce0e10d674d0ecdc1e69032