[INFO] fetching crate mailbox 0.2.0...
[INFO] documenting mailbox-0.2.0 against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] extracting crate mailbox 0.2.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate mailbox 0.2.0 on toolchain 394e1b40d264aa6928811919c1124fa248e7d802
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mailbox 0.2.0
[INFO] finished tweaking crates.io crate mailbox 0.2.0
[INFO] tweaked toml for crates.io crate mailbox 0.2.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "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-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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "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] 0841a0f19c3cdfd84c13c370878cc59577ee4ff5f9d9ea93b98e47482de04c6d
[INFO] running `Command { std: "docker" "start" "-a" "0841a0f19c3cdfd84c13c370878cc59577ee4ff5f9d9ea93b98e47482de04c6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0841a0f19c3cdfd84c13c370878cc59577ee4ff5f9d9ea93b98e47482de04c6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0841a0f19c3cdfd84c13c370878cc59577ee4ff5f9d9ea93b98e47482de04c6d", kill_on_drop: false }`
[INFO] [stdout] 0841a0f19c3cdfd84c13c370878cc59577ee4ff5f9d9ea93b98e47482de04c6d
[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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "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] 79b6dc43b53b4995894115e9c2d4c1fe8ad952da12b058d606456c68480fe4f8
[INFO] running `Command { std: "docker" "start" "-a" "79b6dc43b53b4995894115e9c2d4c1fe8ad952da12b058d606456c68480fe4f8", kill_on_drop: false }`
[INFO] [stderr]     Checking casing v0.1.0
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]  Documenting mailbox v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.55s
[INFO] running `Command { std: "docker" "inspect" "79b6dc43b53b4995894115e9c2d4c1fe8ad952da12b058d606456c68480fe4f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79b6dc43b53b4995894115e9c2d4c1fe8ad952da12b058d606456c68480fe4f8", kill_on_drop: false }`
[INFO] [stdout] 79b6dc43b53b4995894115e9c2d4c1fe8ad952da12b058d606456c68480fe4f8