[INFO] updating cached repository https://github.com/kirjavascript/duplex
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4ff204f7567bf071b46cece9f502f839e4e3c23f
[INFO] documenting kirjavascript/duplex against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkirjavascript%2Fduplex" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kirjavascript/duplex 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 git repo https://github.com/kirjavascript/duplex
[INFO] finished tweaking git repo https://github.com/kirjavascript/duplex
[INFO] tweaked toml for git repo https://github.com/kirjavascript/duplex written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/kirjavascript/duplex already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] [stdout] c3ea6e6cf056169c40252bfb8611c9fdabb5dc9baa7cd6c2e36a976b899f04a9
[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" "c3ea6e6cf056169c40252bfb8611c9fdabb5dc9baa7cd6c2e36a976b899f04a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c3ea6e6cf056169c40252bfb8611c9fdabb5dc9baa7cd6c2e36a976b899f04a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3ea6e6cf056169c40252bfb8611c9fdabb5dc9baa7cd6c2e36a976b899f04a9", kill_on_drop: false }`
[INFO] [stdout] c3ea6e6cf056169c40252bfb8611c9fdabb5dc9baa7cd6c2e36a976b899f04a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] [stdout] 749721291d537f09829a9706ca61a600c75cbce5a69a510a78daf2bc0b71e228
[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" "749721291d537f09829a9706ca61a600c75cbce5a69a510a78daf2bc0b71e228", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling serde v1.0.82
[INFO] [stderr]     Checking cfg-if v0.1.6
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]     Checking nom v4.1.1
[INFO] [stderr]    Compiling syn v0.15.23
[INFO] [stderr]    Compiling serde_derive v1.0.82
[INFO] [stderr]     Checking serde_json v1.0.33
[INFO] [stderr]  Documenting duplex v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.04s
[INFO] running `Command { std: "docker" "inspect" "749721291d537f09829a9706ca61a600c75cbce5a69a510a78daf2bc0b71e228", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "749721291d537f09829a9706ca61a600c75cbce5a69a510a78daf2bc0b71e228", kill_on_drop: false }`
[INFO] [stdout] 749721291d537f09829a9706ca61a600c75cbce5a69a510a78daf2bc0b71e228