[INFO] fetching crate msiz_rustc-ap-syntax 3.0.0...
[INFO] documenting msiz_rustc-ap-syntax-3.0.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate msiz_rustc-ap-syntax 3.0.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate msiz_rustc-ap-syntax 3.0.0 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 msiz_rustc-ap-syntax 3.0.0
[INFO] finished tweaking crates.io crate msiz_rustc-ap-syntax 3.0.0
[INFO] tweaked toml for crates.io crate msiz_rustc-ap-syntax 3.0.0 written to /workspace/builds/worker-6/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]  Downloading crates ...
[INFO] [stderr]   Downloaded annotate-snippets v0.6.1
[INFO] [stderr]   Downloaded msiz_rustc-ap-syntax_pos v3.0.0
[INFO] [stderr]   Downloaded msiz_rustc-ap-rustc_errors v3.0.0
[INFO] [stderr]   Downloaded msiz_rustc-ap-rustc_lexer v3.0.0
[INFO] [stderr]   Downloaded msiz_rustc-ap-rustc_target v3.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 58a95912c7302a661952f524e539dff95d61288bb4bd92714a88346dde21f8a0
[INFO] running `Command { std: "docker" "start" "-a" "58a95912c7302a661952f524e539dff95d61288bb4bd92714a88346dde21f8a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "58a95912c7302a661952f524e539dff95d61288bb4bd92714a88346dde21f8a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58a95912c7302a661952f524e539dff95d61288bb4bd92714a88346dde21f8a0", kill_on_drop: false }`
[INFO] [stdout] 58a95912c7302a661952f524e539dff95d61288bb4bd92714a88346dde21f8a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 1fdad7e65d285389e1fc189d292ab664941c160035d13b768c819c3f9be24477
[INFO] running `Command { std: "docker" "start" "-a" "1fdad7e65d285389e1fc189d292ab664941c160035d13b768c819c3f9be24477", 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 autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling rustc-rayon-core v0.2.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling rustc-rayon v0.2.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking msiz_rustc-ap-graphviz v3.0.0
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]    Compiling msiz_rustc-ap-rustc_target v3.0.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking annotate-snippets v0.6.1
[INFO] [stderr]    Compiling msiz_rustc-ap-syntax v3.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking unicode-xid v0.2.3
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]     Checking owning_ref v0.4.1
[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/msiz_rustc-ap-graphviz-3.0.0/lib.rs:277:1
[INFO] [stdout]     |
[INFO] [stdout] 277 | #![feature(rustc_private, nll)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[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 `msiz_rustc-ap-graphviz` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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/crossbeam-utils-0.6.6/src/lib.rs:32:34
[INFO] [stdout]    |
[INFO] [stdout] 32 | #![cfg_attr(feature = "nightly", feature(cfg_target_has_atomic))]
[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 `crossbeam-utils` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "1fdad7e65d285389e1fc189d292ab664941c160035d13b768c819c3f9be24477", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fdad7e65d285389e1fc189d292ab664941c160035d13b768c819c3f9be24477", kill_on_drop: false }`
[INFO] [stdout] 1fdad7e65d285389e1fc189d292ab664941c160035d13b768c819c3f9be24477