[INFO] crate zbox 0.9.1 is already in cache
[INFO] documenting zbox-0.9.1 against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] extracting crate zbox 0.9.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate zbox 0.9.1 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 zbox 0.9.1
[INFO] finished tweaking crates.io crate zbox 0.9.1
[INFO] tweaked toml for crates.io crate zbox 0.9.1 written to /workspace/builds/worker-4/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 5d5a20731a331abcfc10d9604208675a19250e9a7a6dbdba78d07cb135ab4d4a
[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" "5d5a20731a331abcfc10d9604208675a19250e9a7a6dbdba78d07cb135ab4d4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5d5a20731a331abcfc10d9604208675a19250e9a7a6dbdba78d07cb135ab4d4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d5a20731a331abcfc10d9604208675a19250e9a7a6dbdba78d07cb135ab4d4a", kill_on_drop: false }`
[INFO] [stdout] 5d5a20731a331abcfc10d9604208675a19250e9a7a6dbdba78d07cb135ab4d4a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] dbb0076a47cf90eedd2524e2e8313bcdbc272d079f315cd33cea142bc7df6d63
[INFO] running `Command { std: "docker" "start" "-a" "dbb0076a47cf90eedd2524e2e8313bcdbc272d079f315cd33cea142bc7df6d63", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]    Compiling cc v1.0.56
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking rmp v0.8.9
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling zbox v0.9.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking serde_test v1.0.114
[INFO] [stderr]     Checking rmp-serde v0.14.3
[INFO] [stderr]     Checking linked-hash-map v0.5.3
[INFO] [stderr]  Documenting zbox v0.9.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> src/trans/txmgr.rs:194:47
[INFO] [stdout]     |
[INFO] [stdout] 194 |     static ref EXCL_TX_LOCK: Arc<Mutex<()>> = { Arc::new(Mutex::new(())) };
[INFO] [stdout]     |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 06s
[INFO] running `Command { std: "docker" "inspect" "dbb0076a47cf90eedd2524e2e8313bcdbc272d079f315cd33cea142bc7df6d63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbb0076a47cf90eedd2524e2e8313bcdbc272d079f315cd33cea142bc7df6d63", kill_on_drop: false }`
[INFO] [stdout] dbb0076a47cf90eedd2524e2e8313bcdbc272d079f315cd33cea142bc7df6d63