[INFO] fetching crate castle_api 0.5.9...
[INFO] documenting castle_api-0.5.9 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate castle_api 0.5.9 into /workspace/builds/worker-73/source
[INFO] validating manifest of crates.io crate castle_api 0.5.9 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 castle_api 0.5.9
[INFO] finished tweaking crates.io crate castle_api 0.5.9
[INFO] tweaked toml for crates.io crate castle_api 0.5.9 written to /workspace/builds/worker-73/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] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded castle_query_parser v0.5.9
[INFO] [stderr]   Downloaded castle_schema_parser v0.5.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/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] 2fd78dfa0d2d07101d4be56d267355f9405d59e90bf5cfabaec149941dca6f73
[INFO] running `Command { std: "docker" "start" "-a" "2fd78dfa0d2d07101d4be56d267355f9405d59e90bf5cfabaec149941dca6f73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2fd78dfa0d2d07101d4be56d267355f9405d59e90bf5cfabaec149941dca6f73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fd78dfa0d2d07101d4be56d267355f9405d59e90bf5cfabaec149941dca6f73", kill_on_drop: false }`
[INFO] [stdout] 2fd78dfa0d2d07101d4be56d267355f9405d59e90bf5cfabaec149941dca6f73
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/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] 37c285c43c992c5a691f76b4b1d38ec5e3e6416db8f6e1cb409bde186a15ef63
[INFO] running `Command { std: "docker" "start" "-a" "37c285c43c992c5a691f76b4b1d38ec5e3e6416db8f6e1cb409bde186a15ef63", kill_on_drop: false }`
[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 autocfg v1.1.0
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling paste v1.0.7
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking byte v0.2.6
[INFO] [stderr]     Checking fast-float v0.2.0
[INFO] [stderr]    Compiling async-trait v0.1.53
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]     Checking rmp v0.8.11
[INFO] [stderr]     Checking rmpv v1.0.0
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]     Checking castle_input_cursor v0.5.9
[INFO] [stderr]     Checking rmp-serde v1.1.0
[INFO] [stderr]     Checking uuid v1.1.0
[INFO] [stderr]     Checking castle_error v0.5.9
[INFO] [stderr]     Checking castle_tokenizer v0.5.9
[INFO] [stderr]     Checking castle_shared_parser v0.5.9
[INFO] [stderr]     Checking castle_schema_parser v0.5.9
[INFO] [stderr]     Checking castle_query_parser v0.5.9
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/castle_query_parser-0.5.9/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(if_let_guard)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `castle_query_parser` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "37c285c43c992c5a691f76b4b1d38ec5e3e6416db8f6e1cb409bde186a15ef63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37c285c43c992c5a691f76b4b1d38ec5e3e6416db8f6e1cb409bde186a15ef63", kill_on_drop: false }`
[INFO] [stdout] 37c285c43c992c5a691f76b4b1d38ec5e3e6416db8f6e1cb409bde186a15ef63