[INFO] fetching crate vrsc-rpc 0.0.2...
[INFO] documenting vrsc-rpc-0.0.2 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate vrsc-rpc 0.0.2 into /workspace/builds/worker-33/source
[INFO] validating manifest of crates.io crate vrsc-rpc 0.0.2 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate vrsc-rpc 0.0.2
[INFO] finished tweaking crates.io crate vrsc-rpc 0.0.2
[INFO] tweaked toml for crates.io crate vrsc-rpc 0.0.2 written to /workspace/builds/worker-33/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded jsonrpc v0.11.0
[INFO] [stderr]   Downloaded vrsc-rpc-json v0.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0ecc7f5a5857b6329425ce32cb3fd506a48f928778aba5a27c4d552c94feb9db
[INFO] running `Command { std: "docker" "start" "-a" "0ecc7f5a5857b6329425ce32cb3fd506a48f928778aba5a27c4d552c94feb9db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0ecc7f5a5857b6329425ce32cb3fd506a48f928778aba5a27c4d552c94feb9db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ecc7f5a5857b6329425ce32cb3fd506a48f928778aba5a27c4d552c94feb9db", kill_on_drop: false }`
[INFO] [stdout] 0ecc7f5a5857b6329425ce32cb3fd506a48f928778aba5a27c4d552c94feb9db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 009d1709cc27713a743bfaecaceaa46f01d88a958138dc53616d256ed110e2ae
[INFO] running `Command { std: "docker" "start" "-a" "009d1709cc27713a743bfaecaceaa46f01d88a958138dc53616d256ed110e2ae", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking unicode-bidi v0.3.8
[INFO] [stderr]    Compiling serde_json v1.0.81
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]    Compiling httparse v1.7.1
[INFO] [stderr]     Checking bech32 v0.7.3
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]     Checking bitcoin_hashes v0.9.7
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]     Checking bech32 v0.8.1
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]     Checking tracing-core v0.1.26
[INFO] [stderr]     Checking log v0.4.17
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]    Compiling secp256k1-sys v0.4.2
[INFO] [stderr]    Compiling secp256k1-sys v0.3.0
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking dirs-sys v0.3.7
[INFO] [stderr]     Checking dirs v4.0.0
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking hyper v0.10.16
[INFO] [stderr]     Checking secp256k1 v0.19.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.21
[INFO] [stderr]     Checking tracing v0.1.34
[INFO] [stderr]     Checking serde v1.0.137
[INFO] [stderr]     Checking secp256k1 v0.20.3
[INFO] [stderr]     Checking bitcoin_hashes v0.10.0
[INFO] [stderr]     Checking os_info v3.4.0
[INFO] [stderr]     Checking bitcoin v0.26.2
[INFO] [stderr]     Checking jsonrpc v0.11.0
[INFO] [stderr]     Checking bitcoin v0.27.1
[INFO] [stderr]     Checking vrsc v0.0.1
[INFO] [stderr]     Checking vrsc-rpc-json v0.0.1
[INFO] [stderr]  Documenting vrsc-rpc v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(io_error_more)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `unlock_unspent`
[INFO] [stdout]    --> src/client.rs:686:25
[INFO] [stdout]     |
[INFO] [stdout] 686 |     /// To unlock, use [unlock_unspent].
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^ no item named `unlock_unspent` in scope
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(rustdoc::broken_intra_doc_links)]` on by default
[INFO] [stdout]     = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `vrsc-rpc`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type lib --crate-name vrsc_rpc src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=322a0ca208fcc8d9 -L dependency=/opt/rustwide/target/debug/deps --extern dirs=/opt/rustwide/target/debug/deps/libdirs-c2346699b06481ea.rmeta --extern jsonrpc=/opt/rustwide/target/debug/deps/libjsonrpc-b80d27907c7719d1.rmeta --extern os_info=/opt/rustwide/target/debug/deps/libos_info-e37ab41754f08f7d.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-311e13e6ee1f9772.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-2ba9365f9dbc4a99.rmeta --extern tracing=/opt/rustwide/target/debug/deps/libtracing-8c0e6a5d05296935.rmeta --extern vrsc_rpc_json=/opt/rustwide/target/debug/deps/libvrsc_rpc_json-fa0e8e5cdebc5c40.rmeta --cap-lints=warn --crate-version 0.0.2` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "009d1709cc27713a743bfaecaceaa46f01d88a958138dc53616d256ed110e2ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "009d1709cc27713a743bfaecaceaa46f01d88a958138dc53616d256ed110e2ae", kill_on_drop: false }`
[INFO] [stdout] 009d1709cc27713a743bfaecaceaa46f01d88a958138dc53616d256ed110e2ae