[INFO] fetching crate metrics-macros 0.1.0-alpha.2...
[INFO] documenting metrics-macros-0.1.0-alpha.2 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate metrics-macros 0.1.0-alpha.2 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate metrics-macros 0.1.0-alpha.2 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 crates.io crate metrics-macros 0.1.0-alpha.2
[INFO] finished tweaking crates.io crate metrics-macros 0.1.0-alpha.2
[INFO] tweaked toml for crates.io crate metrics-macros 0.1.0-alpha.2 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 90edcec3a73996fc15c4be5a3958071a8e9f638dc9936b3125934ca78b8f3dfd
[INFO] running `Command { std: "docker" "start" "-a" "90edcec3a73996fc15c4be5a3958071a8e9f638dc9936b3125934ca78b8f3dfd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "90edcec3a73996fc15c4be5a3958071a8e9f638dc9936b3125934ca78b8f3dfd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90edcec3a73996fc15c4be5a3958071a8e9f638dc9936b3125934ca78b8f3dfd", kill_on_drop: false }`
[INFO] [stdout] 90edcec3a73996fc15c4be5a3958071a8e9f638dc9936b3125934ca78b8f3dfd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] [stdout] 12667ae88025f0169445e7d2b5375988d8a0fae486cce88959033b5708e89603
[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" "12667ae88025f0169445e7d2b5375988d8a0fae486cce88959033b5708e89603", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustversion v1.0.3
[INFO] [stderr]  Documenting metrics-macros v0.1.0-alpha.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.47s
[INFO] running `Command { std: "docker" "inspect" "12667ae88025f0169445e7d2b5375988d8a0fae486cce88959033b5708e89603", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12667ae88025f0169445e7d2b5375988d8a0fae486cce88959033b5708e89603", kill_on_drop: false }`
[INFO] [stdout] 12667ae88025f0169445e7d2b5375988d8a0fae486cce88959033b5708e89603