[INFO] fetching crate rucene 0.1.1...
[INFO] documenting rucene-0.1.1 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] extracting crate rucene 0.1.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate rucene 0.1.1 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rucene 0.1.1
[INFO] finished tweaking crates.io crate rucene 0.1.1
[INFO] tweaked toml for crates.io crate rucene 0.1.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate rucene 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7f233fa61b1af596cbd9024e866eb534a55ac6bef0bef924dc13596e80078290
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7f233fa61b1af596cbd9024e866eb534a55ac6bef0bef924dc13596e80078290", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7f233fa61b1af596cbd9024e866eb534a55ac6bef0bef924dc13596e80078290", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f233fa61b1af596cbd9024e866eb534a55ac6bef0bef924dc13596e80078290", kill_on_drop: false }`
[INFO] [stdout] 7f233fa61b1af596cbd9024e866eb534a55ac6bef0bef924dc13596e80078290
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8e968d655ead14a937d3848366ad75c714e2f9a68ada998133845823be95b262
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8e968d655ead14a937d3848366ad75c714e2f9a68ada998133845823be95b262", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.103
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling fasthash v0.3.2
[INFO] [stderr]     Checking ucd-util v0.1.5
[INFO] [stderr]     Checking seahash v3.0.6
[INFO] [stderr]    Compiling fasthash-sys v0.3.2
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]     Checking unicode_reader v0.1.1
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking crossbeam-queue v0.2.0
[INFO] [stderr]     Checking memmap v0.6.2
[INFO] [stderr]     Checking flate2 v1.0.13
[INFO] [stderr]     Checking xoroshiro128 v0.3.0
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking chan v0.1.23
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]     Checking chan-signal v0.3.3
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]    Compiling serde_derive v1.0.103
[INFO] [stderr]     Checking serde_json v1.0.44
[INFO] [stderr]  Documenting rucene v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | #![feature(exact_size_is_empty)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:19:1
[INFO] [stdout]    |
[INFO] [stdout] 19 | #![feature(drain_filter)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | #![feature(hashmap_internals)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | #![feature(integer_atomics)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | #![feature(vec_remove_item)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | #![feature(specialization)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:25:1
[INFO] [stdout]    |
[INFO] [stdout] 25 | #![feature(fn_traits)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:26:1
[INFO] [stdout]    |
[INFO] [stdout] 26 | #![feature(maybe_uninit_ref)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | #![feature(maybe_uninit_extra)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 10 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 `rucene`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name rucene 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 byteorder=/opt/rustwide/target/debug/deps/libbyteorder-cc6360ecd78e8ff4.rmeta --extern bytes=/opt/rustwide/target/debug/deps/libbytes-fb8daf031413d7e0.rmeta --extern chan=/opt/rustwide/target/debug/deps/libchan-01074812bcd38ed0.rmeta --extern chan_signal=/opt/rustwide/target/debug/deps/libchan_signal-51f0e925105e0de9.rmeta --extern crc=/opt/rustwide/target/debug/deps/libcrc-b9d41707aaf5a52c.rmeta --extern crossbeam=/opt/rustwide/target/debug/deps/libcrossbeam-983168e19a810c86.rmeta --extern either=/opt/rustwide/target/debug/deps/libeither-ccde357106a7a978.rmeta --extern error_chain=/opt/rustwide/target/debug/deps/liberror_chain-c4f98f135abe4014.rmeta --extern fasthash=/opt/rustwide/target/debug/deps/libfasthash-ccc4c7e897869a66.rmeta --extern flate2=/opt/rustwide/target/debug/deps/libflate2-46b427ad4d66715e.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-72923b2d9aa06af7.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-518bd946d952a359.rmeta --extern memmap=/opt/rustwide/target/debug/deps/libmemmap-8bc81fc05b331b97.rmeta --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-eb3731b537c09d61.rmeta --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-7095ca8c56e93a2d.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-e61177422ce36952.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-b9e415c0870514fe.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-5a6d4ac190f277c8.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-b10ebc2a43f2d5ab.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-b1c4d756d9950a9a.rmeta --extern smallvec=/opt/rustwide/target/debug/deps/libsmallvec-efa7035596f89c62.rmeta --extern thread_local=/opt/rustwide/target/debug/deps/libthread_local-f3cb12b7b5edc2d8.rmeta --extern unicode_reader=/opt/rustwide/target/debug/deps/libunicode_reader-2c450e78354dc03c.rmeta --cap-lints=warn --crate-version 0.1.1` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "8e968d655ead14a937d3848366ad75c714e2f9a68ada998133845823be95b262", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e968d655ead14a937d3848366ad75c714e2f9a68ada998133845823be95b262", kill_on_drop: false }`
[INFO] [stdout] 8e968d655ead14a937d3848366ad75c714e2f9a68ada998133845823be95b262
