[INFO] fetching crate buf 0.2.2...
[INFO] documenting buf-0.2.2 against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] extracting crate buf 0.2.2 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate buf 0.2.2 on toolchain 66dfc4e010913fbed0c4ea91fc2c010004b0f441
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate buf 0.2.2
[INFO] finished tweaking crates.io crate buf 0.2.2
[INFO] tweaked toml for crates.io crate buf 0.2.2 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded i-o v0.4.4
[INFO] [stderr]   Downloaded containers v0.9.6
[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" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "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] aa10ca965c220bad4e7741fc2b9425af88259d3065249ef70ca9260c7e45d201
[INFO] running `Command { std: "docker" "start" "-a" "aa10ca965c220bad4e7741fc2b9425af88259d3065249ef70ca9260c7e45d201", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aa10ca965c220bad4e7741fc2b9425af88259d3065249ef70ca9260c7e45d201", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa10ca965c220bad4e7741fc2b9425af88259d3065249ef70ca9260c7e45d201", kill_on_drop: false }`
[INFO] [stdout] aa10ca965c220bad4e7741fc2b9425af88259d3065249ef70ca9260c7e45d201
[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" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "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] 8cd6d64dec75eb7c90c4c85f99d77295fa646c4fdadd281266800ffb065cc51f
[INFO] running `Command { std: "docker" "start" "-a" "8cd6d64dec75eb7c90c4c85f99d77295fa646c4fdadd281266800ffb065cc51f", kill_on_drop: false }`
[INFO] [stderr]    Compiling ptr v0.2.1
[INFO] [stderr]    Compiling hash-table v0.2.3
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking siphasher v0.2.3
[INFO] [stderr]    Compiling containers v0.9.6
[INFO] [stderr]     Checking heap v0.1.0
[INFO] [stderr]    Compiling i-o v0.4.4
[INFO] [stderr]     Checking rel v0.2.0
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking fallible v0.1.3
[INFO] [stderr]     Checking loca v0.7.2
[INFO] [stderr]     Checking default_allocator v0.3.0
[INFO] [stderr]  Documenting buf v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.13s
[INFO] running `Command { std: "docker" "inspect" "8cd6d64dec75eb7c90c4c85f99d77295fa646c4fdadd281266800ffb065cc51f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cd6d64dec75eb7c90c4c85f99d77295fa646c4fdadd281266800ffb065cc51f", kill_on_drop: false }`
[INFO] [stdout] 8cd6d64dec75eb7c90c4c85f99d77295fa646c4fdadd281266800ffb065cc51f