[INFO] fetching crate ssdp 0.7.0...
[INFO] documenting ssdp-0.7.0 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate ssdp 0.7.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate ssdp 0.7.0 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ssdp 0.7.0
[INFO] finished tweaking crates.io crate ssdp 0.7.0
[INFO] tweaked toml for crates.io crate ssdp 0.7.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 568e27396def287d5e65f59b22a7b2e14992be8ddc6c26fa68506b325a798bd7
[INFO] running `Command { std: "docker" "start" "-a" "568e27396def287d5e65f59b22a7b2e14992be8ddc6c26fa68506b325a798bd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "568e27396def287d5e65f59b22a7b2e14992be8ddc6c26fa68506b325a798bd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "568e27396def287d5e65f59b22a7b2e14992be8ddc6c26fa68506b325a798bd7", kill_on_drop: false }`
[INFO] [stdout] 568e27396def287d5e65f59b22a7b2e14992be8ddc6c26fa68506b325a798bd7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 45425961e7e9c1411be348476d39054c68b53af435ea037d2d4b313b923ec111
[INFO] running `Command { std: "docker" "start" "-a" "45425961e7e9c1411be348476d39054c68b53af435ea037d2d4b313b923ec111", kill_on_drop: false }`
[INFO] [stderr]     Checking c_linked_list v1.1.1
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking get_if_addrs v0.5.3
[INFO] [stderr]     Checking hyper v0.10.16
[INFO] [stderr]  Documenting ssdp v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(ip)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `ssdp`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name ssdp src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern error_chain=/opt/rustwide/target/debug/deps/liberror_chain-5d67c0131fb0989b.rmeta --extern get_if_addrs=/opt/rustwide/target/debug/deps/libget_if_addrs-be4cec266d625522.rmeta --extern hyper=/opt/rustwide/target/debug/deps/libhyper-57fce8ba96bc2d66.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-538ccf74a4ec0a82.rmeta --extern net2=/opt/rustwide/target/debug/deps/libnet2-c76066b5496f4419.rmeta --extern time=/opt/rustwide/target/debug/deps/libtime-06a439cbf99d31a6.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "45425961e7e9c1411be348476d39054c68b53af435ea037d2d4b313b923ec111", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45425961e7e9c1411be348476d39054c68b53af435ea037d2d4b313b923ec111", kill_on_drop: false }`
[INFO] [stdout] 45425961e7e9c1411be348476d39054c68b53af435ea037d2d4b313b923ec111