[INFO] crate rust-flatten-json 0.2.0 is already in cache
[INFO] documenting rust-flatten-json-0.2.0 against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] extracting crate rust-flatten-json 0.2.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate rust-flatten-json 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 rust-flatten-json 0.2.0
[INFO] finished tweaking crates.io crate rust-flatten-json 0.2.0
[INFO] tweaked toml for crates.io crate rust-flatten-json 0.2.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate rust-flatten-json 0.2.0 already has a lockfile, it will not be regenerated
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] [stdout] 77b3dee31292e89f9281193aed065c4efcd38d5a940916c40ee264404dd5996d
[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" "77b3dee31292e89f9281193aed065c4efcd38d5a940916c40ee264404dd5996d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "77b3dee31292e89f9281193aed065c4efcd38d5a940916c40ee264404dd5996d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77b3dee31292e89f9281193aed065c4efcd38d5a940916c40ee264404dd5996d", kill_on_drop: false }`
[INFO] [stdout] 77b3dee31292e89f9281193aed065c4efcd38d5a940916c40ee264404dd5996d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] [stdout] 930f8c2170a15885f13053497571bb9428eb1f71f0c37db39dc0d1ac510ebb5d
[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" "930f8c2170a15885f13053497571bb9428eb1f71f0c37db39dc0d1ac510ebb5d", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]    Compiling error-chain v0.12.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking backtrace v0.3.42
[INFO] [stderr]     Checking serde_json v1.0.45
[INFO] [stderr]     Checking rust-flatten-json v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting rust-flatten-json v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/lib.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | / error_chain! {
[INFO] [stdout] 12 | | foreign_links {
[INFO] [stdout] 13 | |         Json(::serde_json::Error);
[INFO] [stdout] 14 | |     }
[INFO] [stdout] 15 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.59s
[INFO] running `Command { std: "docker" "inspect" "930f8c2170a15885f13053497571bb9428eb1f71f0c37db39dc0d1ac510ebb5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "930f8c2170a15885f13053497571bb9428eb1f71f0c37db39dc0d1ac510ebb5d", kill_on_drop: false }`
[INFO] [stdout] 930f8c2170a15885f13053497571bb9428eb1f71f0c37db39dc0d1ac510ebb5d