[INFO] fetching crate sonos 0.1.4...
[INFO] documenting sonos-0.1.4 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate sonos 0.1.4 into /workspace/builds/worker-61/source
[INFO] validating manifest of crates.io crate sonos 0.1.4 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sonos 0.1.4
[INFO] finished tweaking crates.io crate sonos 0.1.4
[INFO] tweaked toml for crates.io crate sonos 0.1.4 written to /workspace/builds/worker-61/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "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" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", 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]  Downloading crates ...
[INFO] [stderr]   Downloaded ssdp v0.7.0
[INFO] [stderr]   Downloaded xmltree v0.10.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c0eeb81de34a1481a875561c34290f2065b164d2ea8b7dcd40d1a47316af3ed6
[INFO] running `Command { std: "docker" "start" "-a" "c0eeb81de34a1481a875561c34290f2065b164d2ea8b7dcd40d1a47316af3ed6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c0eeb81de34a1481a875561c34290f2065b164d2ea8b7dcd40d1a47316af3ed6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0eeb81de34a1481a875561c34290f2065b164d2ea8b7dcd40d1a47316af3ed6", kill_on_drop: false }`
[INFO] [stdout] c0eeb81de34a1481a875561c34290f2065b164d2ea8b7dcd40d1a47316af3ed6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c29e6bf968c75d6f19326d153e78068491b522c5977d0384f6d6de022d6097c
[INFO] running `Command { std: "docker" "start" "-a" "6c29e6bf968c75d6f19326d153e78068491b522c5977d0384f6d6de022d6097c", 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]     Checking c_linked_list v1.1.1
[INFO] [stderr]    Compiling futures-util v0.3.16
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking xmltree v0.10.3
[INFO] [stderr]     Checking tracing v0.1.26
[INFO] [stderr]     Checking object v0.26.0
[INFO] [stderr]     Checking unicase v1.4.2
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking serde_urlencoded v0.7.0
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking native-tls v0.2.7
[INFO] [stderr]     Checking get_if_addrs v0.5.3
[INFO] [stderr]     Checking tracing-futures v0.2.5
[INFO] [stderr]     Checking hyper v0.10.16
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tokio-tls v0.3.1
[INFO] [stderr]     Checking backtrace v0.3.61
[INFO] [stderr]     Checking h2 v0.2.7
[INFO] [stderr]     Checking error-chain v0.10.0
[INFO] [stderr]     Checking ssdp v0.7.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/ssdp-0.7.0/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(ip)]
[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 `ssdp` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "6c29e6bf968c75d6f19326d153e78068491b522c5977d0384f6d6de022d6097c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c29e6bf968c75d6f19326d153e78068491b522c5977d0384f6d6de022d6097c", kill_on_drop: false }`
[INFO] [stdout] 6c29e6bf968c75d6f19326d153e78068491b522c5977d0384f6d6de022d6097c
