[INFO] cloning repository https://github.com/kkspeed/metal-placebo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kkspeed/metal-placebo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkkspeed%2Fmetal-placebo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkkspeed%2Fmetal-placebo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 63665057c8369a620fb33fc8d85c1c99a3de81ea
[INFO] documenting kkspeed/metal-placebo against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkkspeed%2Fmetal-placebo" "/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/kkspeed/metal-placebo on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kkspeed/metal-placebo
[INFO] finished tweaking git repo https://github.com/kkspeed/metal-placebo
[INFO] tweaked toml for git repo https://github.com/kkspeed/metal-placebo written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/kkspeed/metal-placebo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "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-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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 38b5b5eafd4a8c31ccab5c95e059a7a3bcaf7cdb4e49ee80d96bce23cc38bf44
[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" "38b5b5eafd4a8c31ccab5c95e059a7a3bcaf7cdb4e49ee80d96bce23cc38bf44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "38b5b5eafd4a8c31ccab5c95e059a7a3bcaf7cdb4e49ee80d96bce23cc38bf44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38b5b5eafd4a8c31ccab5c95e059a7a3bcaf7cdb4e49ee80d96bce23cc38bf44", kill_on_drop: false }`
[INFO] [stdout] 38b5b5eafd4a8c31ccab5c95e059a7a3bcaf7cdb4e49ee80d96bce23cc38bf44
[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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--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] f8647c4efbc5fa1030ed90353b665a0227e1fd6f311c06b4212fdab4ccbb2403
[INFO] running `Command { std: "docker" "start" "-a" "f8647c4efbc5fa1030ed90353b665a0227e1fd6f311c06b4212fdab4ccbb2403", kill_on_drop: false }`
[INFO] [stderr]     Checking num-traits v0.1.36
[INFO] [stderr]     Checking serde v0.8.22
[INFO] [stderr]    Compiling error-chain v0.7.2
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stderr]    Compiling pkg-config v0.3.8
[INFO] [stderr]     Checking libc v0.2.19
[INFO] [stderr]     Checking traitobject v0.0.3
[INFO] [stderr]     Checking quick-error v1.1.0
[INFO] [stderr]     Checking dtoa v0.2.2
[INFO] [stderr]     Checking log v0.3.6
[INFO] [stderr]     Checking rustc-serialize v0.3.22
[INFO] [stderr]     Checking crossbeam v0.2.10
[INFO] [stderr]     Checking antidote v1.0.0
[INFO] [stderr]     Checking log-mdc v0.1.0
[INFO] [stderr]     Checking fnv v1.0.5
[INFO] [stderr]     Checking humantime v1.0.0
[INFO] [stderr]     Checking unsafe-any v0.4.1
[INFO] [stderr]     Checking typemap v0.3.3
[INFO] [stderr]    Compiling metadeps v1.1.1
[INFO] [stderr]     Checking time v0.1.35
[INFO] [stderr]     Checking num-integer v0.1.32
[INFO] [stderr]     Checking ordered-float v0.2.3
[INFO] [stderr]     Checking num-iter v0.1.32
[INFO] [stderr]    Compiling x11 v2.12.0
[INFO] [stderr]     Checking num v0.1.36
[INFO] [stderr]     Checking chrono v0.2.25
[INFO] [stderr]     Checking serde_test v0.8.22
[INFO] [stderr]     Checking serde-value v0.3.1
[INFO] [stderr]     Checking mustache v0.8.0
[INFO] [stderr]     Checking linked-hash-map v0.3.0
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]     Checking serde_yaml v0.5.0
[INFO] [stderr]     Checking log4rs v0.5.2
[INFO] [stderr]  Documenting rswm v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.87s
[INFO] running `Command { std: "docker" "inspect" "f8647c4efbc5fa1030ed90353b665a0227e1fd6f311c06b4212fdab4ccbb2403", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8647c4efbc5fa1030ed90353b665a0227e1fd6f311c06b4212fdab4ccbb2403", kill_on_drop: false }`
[INFO] [stdout] f8647c4efbc5fa1030ed90353b665a0227e1fd6f311c06b4212fdab4ccbb2403