[INFO] fetching crate comet-gc 0.1.3...
[INFO] documenting comet-gc-0.1.3 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate comet-gc 0.1.3 into /workspace/builds/worker-74/source
[INFO] validating manifest of crates.io crate comet-gc 0.1.3 on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate comet-gc 0.1.3
[INFO] finished tweaking crates.io crate comet-gc 0.1.3
[INFO] tweaked toml for crates.io crate comet-gc 0.1.3 written to /workspace/builds/worker-74/source/Cargo.toml
[INFO] crate crates.io crate comet-gc 0.1.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--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-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 91d6ca793e43bee1fe24eb5aa14d0f88de999f1f934a04e94aadcc559ab5d328
[INFO] running `Command { std: "docker" "start" "-a" "91d6ca793e43bee1fe24eb5aa14d0f88de999f1f934a04e94aadcc559ab5d328", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "91d6ca793e43bee1fe24eb5aa14d0f88de999f1f934a04e94aadcc559ab5d328", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91d6ca793e43bee1fe24eb5aa14d0f88de999f1f934a04e94aadcc559ab5d328", kill_on_drop: false }`
[INFO] [stdout] 91d6ca793e43bee1fe24eb5aa14d0f88de999f1f934a04e94aadcc559ab5d328
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9a3edcb57f6e0b8956972e054fb4b0b86ba32800ac82b66e3958368244815112
[INFO] running `Command { std: "docker" "start" "-a" "9a3edcb57f6e0b8956972e054fb4b0b86ba32800ac82b66e3958368244815112", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling libc v0.2.105
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking smallvec v1.7.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]    Compiling atomic v0.5.0
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking memmap2 v0.5.0
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]    Compiling modular-bitfield-impl v0.11.2
[INFO] [stderr]     Checking modular-bitfield v0.11.2
[INFO] [stderr]     Checking comet-gc v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/gcref.rs:90:32
[INFO] [stdout]    |
[INFO] [stdout] 86 | /     pub unsafe fn cast_unchecked<T: GCInfoTrait<T> + TraceTrait + FinalizeTrait<T> + 'static>(
[INFO] [stdout] 87 | |         self,
[INFO] [stdout] 88 | |     ) -> GcRef<T> {
[INFO] [stdout]    | |_________________- because it's nested under this `unsafe` fn
[INFO] [stdout] 89 |           self.cast::<T>()
[INFO] [stdout] 90 |               .unwrap_or_else(|| unsafe { core::hint::unreachable_unchecked() })
[INFO] [stdout]    |                                  ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout]    = note: this `unsafe` block does contain unsafe operations, but those are already allowed in an `unsafe fn`
[INFO] [stdout]    = note: `#[allow(unsafe_op_in_unsafe_fn)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]  Documenting comet-gc v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.07s
[INFO] running `Command { std: "docker" "inspect" "9a3edcb57f6e0b8956972e054fb4b0b86ba32800ac82b66e3958368244815112", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a3edcb57f6e0b8956972e054fb4b0b86ba32800ac82b66e3958368244815112", kill_on_drop: false }`
[INFO] [stdout] 9a3edcb57f6e0b8956972e054fb4b0b86ba32800ac82b66e3958368244815112
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "DOCS_RS=1" "-e" "RUSTC_BOOTSTRAP=1" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 5983dfc37c6190498456dd0fe283401dcbf202fe6619c4e0a6a84d2ed68342f9
[INFO] running `Command { std: "docker" "start" "-a" "5983dfc37c6190498456dd0fe283401dcbf202fe6619c4e0a6a84d2ed68342f9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling libc v0.2.105
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]     Checking smallvec v1.7.0
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]    Compiling atomic v0.5.0
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking memmap2 v0.5.0
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]    Compiling modular-bitfield-impl v0.11.2
[INFO] [stderr]     Checking modular-bitfield v0.11.2
[INFO] [stderr]  Documenting comet-gc v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.68s
[INFO] running `Command { std: "docker" "inspect" "5983dfc37c6190498456dd0fe283401dcbf202fe6619c4e0a6a84d2ed68342f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5983dfc37c6190498456dd0fe283401dcbf202fe6619c4e0a6a84d2ed68342f9", kill_on_drop: false }`
[INFO] [stdout] 5983dfc37c6190498456dd0fe283401dcbf202fe6619c4e0a6a84d2ed68342f9