[INFO] fetching crate spaceindex 0.3.0...
[INFO] documenting spaceindex-0.3.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate spaceindex 0.3.0 into /workspace/builds/worker-26/source
[INFO] validating manifest of crates.io crate spaceindex 0.3.0 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 spaceindex 0.3.0
[INFO] finished tweaking crates.io crate spaceindex 0.3.0
[INFO] tweaked toml for crates.io crate spaceindex 0.3.0 written to /workspace/builds/worker-26/source/Cargo.toml
[INFO] crate crates.io crate spaceindex 0.3.0 already has a lockfile, it will not be regenerated
[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 generational-arena v0.2.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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] 863f0017b38c2e52c4996b73638d12968b5c9327fa9b5c575a00b268493726bc
[INFO] running `Command { std: "docker" "start" "-a" "863f0017b38c2e52c4996b73638d12968b5c9327fa9b5c575a00b268493726bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "863f0017b38c2e52c4996b73638d12968b5c9327fa9b5c575a00b268493726bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "863f0017b38c2e52c4996b73638d12968b5c9327fa9b5c575a00b268493726bc", kill_on_drop: false }`
[INFO] [stdout] 863f0017b38c2e52c4996b73638d12968b5c9327fa9b5c575a00b268493726bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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] ff5771f0deda0dde78a2c62d13d6187f9cc6cfef25298e160b8fd388ad3929b5
[INFO] running `Command { std: "docker" "start" "-a" "ff5771f0deda0dde78a2c62d13d6187f9cc6cfef25298e160b8fd388ad3929b5", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking scopeguard v1.0.0
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking adler32 v1.0.4
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking color_quant v1.0.1
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]     Checking rawpointer v0.1.0
[INFO] [stderr]     Checking custom_derive v0.1.7
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]    Compiling anyhow v1.0.26
[INFO] [stderr]     Checking rustc-ap-graphviz v645.0.0
[INFO] [stderr]     Checking generational-arena v0.2.7
[INFO] [stderr]     Checking conv v0.3.3
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[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/rustc-ap-graphviz-645.0.0/lib.rs:278:1
[INFO] [stdout]     |
[INFO] [stdout] 278 | #![feature(rustc_private, nll)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling semver v0.9.0
[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]     Checking inflate v0.4.5
[INFO] [stderr] error: could not compile `rustc-ap-graphviz` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ff5771f0deda0dde78a2c62d13d6187f9cc6cfef25298e160b8fd388ad3929b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff5771f0deda0dde78a2c62d13d6187f9cc6cfef25298e160b8fd388ad3929b5", kill_on_drop: false }`
[INFO] [stdout] ff5771f0deda0dde78a2c62d13d6187f9cc6cfef25298e160b8fd388ad3929b5