[INFO] fetching crate hue_persistence 0.2.5...
[INFO] documenting hue_persistence-0.2.5 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate hue_persistence 0.2.5 into /workspace/builds/worker-96/source
[INFO] validating manifest of crates.io crate hue_persistence 0.2.5 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hue_persistence 0.2.5
[INFO] finished tweaking crates.io crate hue_persistence 0.2.5
[INFO] tweaked toml for crates.io crate hue_persistence 0.2.5 written to /workspace/builds/worker-96/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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" "+1.54.0" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-96/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-96/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" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0bb62be6b4d91ace662a1cbb01d0245376845fab0b88cabe0df1b0861f4c43c7
[INFO] running `Command { std: "docker" "start" "-a" "0bb62be6b4d91ace662a1cbb01d0245376845fab0b88cabe0df1b0861f4c43c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0bb62be6b4d91ace662a1cbb01d0245376845fab0b88cabe0df1b0861f4c43c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bb62be6b4d91ace662a1cbb01d0245376845fab0b88cabe0df1b0861f4c43c7", kill_on_drop: false }`
[INFO] [stdout] 0bb62be6b4d91ace662a1cbb01d0245376845fab0b88cabe0df1b0861f4c43c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-96/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-96/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" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 42cea845cdc4d1fd54d86275d3ba0e09401ec27cff525055652ad00ad15abb4d
[INFO] running `Command { std: "docker" "start" "-a" "42cea845cdc4d1fd54d86275d3ba0e09401ec27cff525055652ad00ad15abb4d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]     Checking serde v0.8.23
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]     Checking typeable v0.1.2
[INFO] [stderr]     Checking serde v0.7.15
[INFO] [stderr]     Checking language-tags v0.2.2
[INFO] [stderr]     Checking traitobject v0.0.1
[INFO] [stderr]     Checking itoa v0.1.1
[INFO] [stderr]     Checking dtoa v0.2.2
[INFO] [stderr]    Compiling philipshue v0.2.4
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking unix_socket v0.5.0
[INFO] [stderr]     Checking hpack v0.2.0
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking cookie v0.2.5
[INFO] [stderr]     Checking syslog v3.3.0
[INFO] [stderr]     Checking solicit v0.4.4
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]    Compiling syn v0.10.8
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking serde_json v0.8.6
[INFO] [stderr]     Checking ifaces v0.0.3
[INFO] [stderr]     Checking object v0.26.0
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]    Compiling serde_codegen_internals v0.11.3
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]    Compiling serde_codegen v0.8.23
[INFO] [stderr]     Checking hyper v0.9.18
[INFO] [stderr]     Checking env_logger v0.3.5
[INFO] [stderr]    Compiling serde_derive v0.8.23
[INFO] [stderr]     Checking backtrace v0.3.61
[INFO] [stderr]     Checking error-chain v0.7.2
[INFO] [stderr]     Checking ssdp 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/ssdp-0.5.0/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(lookup_host, 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`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "42cea845cdc4d1fd54d86275d3ba0e09401ec27cff525055652ad00ad15abb4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42cea845cdc4d1fd54d86275d3ba0e09401ec27cff525055652ad00ad15abb4d", kill_on_drop: false }`
[INFO] [stdout] 42cea845cdc4d1fd54d86275d3ba0e09401ec27cff525055652ad00ad15abb4d
