[INFO] crate subprocess 0.2.4 is already in cache
[INFO] documenting subprocess-0.2.4 against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] extracting crate subprocess 0.2.4 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate subprocess 0.2.4 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 subprocess 0.2.4
[INFO] finished tweaking crates.io crate subprocess 0.2.4
[INFO] tweaked toml for crates.io crate subprocess 0.2.4 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate crates.io crate subprocess 0.2.4 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] fcc4de46432d2807e1c40db9c4b1f2058aa853996faf186ec8de3dae7db99668
[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" "fcc4de46432d2807e1c40db9c4b1f2058aa853996faf186ec8de3dae7db99668", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fcc4de46432d2807e1c40db9c4b1f2058aa853996faf186ec8de3dae7db99668", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcc4de46432d2807e1c40db9c4b1f2058aa853996faf186ec8de3dae7db99668", kill_on_drop: false }`
[INFO] [stdout] fcc4de46432d2807e1c40db9c4b1f2058aa853996faf186ec8de3dae7db99668
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] 5f0005c39fe742d56a99e1f21906627973069f75ae8ad42e8202724d2e7adb10
[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" "5f0005c39fe742d56a99e1f21906627973069f75ae8ad42e8202724d2e7adb10", kill_on_drop: false }`
[INFO] [stderr]     Checking subprocess v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting subprocess v0.2.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]    --> src/communicate.rs:583:20
[INFO] [stdout]     |
[INFO] [stdout] 583 |         self.error.description()
[INFO] [stdout]     |                    ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]     --> src/popen.rs:1254:49
[INFO] [stdout]      |
[INFO] [stdout] 1254 |             PopenError::IoError(ref err) => err.description(),
[INFO] [stdout]      |                                                 ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `[popen]` cannot be resolved, ignoring it.
[INFO] [stdout]   --> src/popen.rs:37:16
[INFO] [stdout]    |
[INFO] [stdout] 37 | /// using the [`popen`] method of the [`Exec`] class.  Subprocesses
[INFO] [stdout]    |                ^^^^^^^ cannot be resolved, ignoring
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(intra_doc_link_resolution_failure)]` on by default
[INFO] [stdout]    = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `[popen]` cannot be resolved, ignoring it.
[INFO] [stdout]   --> src/popen.rs:37:16
[INFO] [stdout]    |
[INFO] [stdout] 37 | /// using the [`popen`] method of the [`Exec`] class.  Subprocesses
[INFO] [stdout]    |                ^^^^^^^ cannot be resolved, ignoring
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.81s
[INFO] running `Command { std: "docker" "inspect" "5f0005c39fe742d56a99e1f21906627973069f75ae8ad42e8202724d2e7adb10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f0005c39fe742d56a99e1f21906627973069f75ae8ad42e8202724d2e7adb10", kill_on_drop: false }`
[INFO] [stdout] 5f0005c39fe742d56a99e1f21906627973069f75ae8ad42e8202724d2e7adb10