[INFO] fetching crate notation_model 0.5.0...
[INFO] documenting notation_model-0.5.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate notation_model 0.5.0 into /workspace/builds/worker-29/source
[INFO] validating manifest of crates.io crate notation_model 0.5.0 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 notation_model 0.5.0
[INFO] finished tweaking crates.io crate notation_model 0.5.0
[INFO] tweaked toml for crates.io crate notation_model 0.5.0 written to /workspace/builds/worker-29/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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] 0e7f821f148315b513e3d768d8bd7a90e9e3e2997f5d8c2183c04f116f45ce48
[INFO] running `Command { std: "docker" "start" "-a" "0e7f821f148315b513e3d768d8bd7a90e9e3e2997f5d8c2183c04f116f45ce48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e7f821f148315b513e3d768d8bd7a90e9e3e2997f5d8c2183c04f116f45ce48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e7f821f148315b513e3d768d8bd7a90e9e3e2997f5d8c2183c04f116f45ce48", kill_on_drop: false }`
[INFO] [stdout] 0e7f821f148315b513e3d768d8bd7a90e9e3e2997f5d8c2183c04f116f45ce48
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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] ea61438417c6208b5ff798498810f334071f64d85015f20ddcb7d44d70d99e2f
[INFO] running `Command { std: "docker" "start" "-a" "ea61438417c6208b5ff798498810f334071f64d85015f20ddcb7d44d70d99e2f", 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling fehler-macros v1.0.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.31
[INFO] [stderr]     Checking thiserror v1.0.31
[INFO] [stderr]     Checking fehler v1.0.0
[INFO] [stderr]     Checking serde_arrays v0.1.0
[INFO] [stderr]     Checking notation_core v0.5.0
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking notation_fretted v0.5.0
[INFO] [stderr]     Checking notation_guitar v0.5.0
[INFO] [stderr]     Checking notation_proto v0.5.0
[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/notation_proto-0.5.0/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(arc_new_cyclic)]
[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 `notation_proto` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "ea61438417c6208b5ff798498810f334071f64d85015f20ddcb7d44d70d99e2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea61438417c6208b5ff798498810f334071f64d85015f20ddcb7d44d70d99e2f", kill_on_drop: false }`
[INFO] [stdout] ea61438417c6208b5ff798498810f334071f64d85015f20ddcb7d44d70d99e2f