[INFO] cloning repository https://github.com/FabioBatSilva/xpq
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/FabioBatSilva/xpq" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFabioBatSilva%2Fxpq", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFabioBatSilva%2Fxpq'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7a3942464f4215febfe254d12459e79ba3c824f5
[INFO] documenting FabioBatSilva/xpq against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFabioBatSilva%2Fxpq" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/FabioBatSilva/xpq 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 git repo https://github.com/FabioBatSilva/xpq
[INFO] finished tweaking git repo https://github.com/FabioBatSilva/xpq
[INFO] tweaked toml for git repo https://github.com/FabioBatSilva/xpq written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/FabioBatSilva/xpq already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] [stdout] fd6d737b92119dc7ecec4d1e679558dcbd8e460cd647b097f4c7548df583425c
[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" "fd6d737b92119dc7ecec4d1e679558dcbd8e460cd647b097f4c7548df583425c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd6d737b92119dc7ecec4d1e679558dcbd8e460cd647b097f4c7548df583425c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd6d737b92119dc7ecec4d1e679558dcbd8e460cd647b097f4c7548df583425c", kill_on_drop: false }`
[INFO] [stdout] fd6d737b92119dc7ecec4d1e679558dcbd8e460cd647b097f4c7548df583425c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] [stdout] 2ef1a1ee0aaef9198edb8c3c81b68c75d0e890f4ccb81f4e9caa7481f28516f2
[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" "2ef1a1ee0aaef9198edb8c3c81b68c75d0e890f4ccb81f4e9caa7481f28516f2", kill_on_drop: false }`
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]     Checking alloc-no-stdlib v2.0.1
[INFO] [stderr]    Compiling snap v1.0.1
[INFO] [stderr]    Compiling parquet v1.0.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.3.0
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling num-rational v0.3.0
[INFO] [stderr]     Checking tracing-core v0.1.13
[INFO] [stderr]     Checking tabwriter v1.2.1
[INFO] [stderr]     Checking flatbuffers v0.6.1
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]    Compiling hashbrown v0.8.1
[INFO] [stderr]     Checking alloc-stdlib v0.2.1
[INFO] [stderr]     Checking clap v2.33.2
[INFO] [stderr]     Checking flate2 v1.0.16
[INFO] [stderr]    Compiling syn v1.0.38
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]     Checking brotli-decompressor v2.3.1
[INFO] [stderr]    Compiling cc v1.0.58
[INFO] [stderr]    Compiling prost-build v0.6.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling indexmap v1.5.0
[INFO] [stderr]    Compiling lz4-sys v1.9.2
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]     Checking num-complex v0.3.0
[INFO] [stderr]     Checking ordered-float v1.1.0
[INFO] [stderr]     Checking streaming-stats v0.2.3
[INFO] [stderr]     Checking brotli v3.3.0
[INFO] [stderr]     Checking chrono v0.4.13
[INFO] [stderr]     Checking thrift v0.13.0
[INFO] [stderr]    Compiling zstd-sys v1.4.17+zstd.1.4.5
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]     Checking parquet-format v2.6.1
[INFO] [stderr]     Checking num v0.3.0
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking prettytable-rs v0.8.0
[INFO] [stderr]     Checking lz4 v1.23.2
[INFO] [stderr]    Compiling pin-project-internal v0.4.23
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling tracing-attributes v0.1.9
[INFO] [stderr]    Compiling prost-derive v0.6.1
[INFO] [stderr]    Compiling async-stream-impl v0.2.1
[INFO] [stderr]    Compiling async-trait v0.1.36
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]     Checking async-stream v0.2.1
[INFO] [stderr]     Checking tracing v0.1.18
[INFO] [stderr]     Checking pin-project v0.4.23
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking tower-discover v0.3.0
[INFO] [stderr]     Checking tower-load-shed v0.3.0
[INFO] [stderr]     Checking tracing-futures v0.2.4
[INFO] [stderr]    Compiling prost v0.6.1
[INFO] [stderr]    Compiling prost-types v0.6.1
[INFO] [stderr]     Checking tower-load v0.3.0
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tower-timeout v0.3.0
[INFO] [stderr]     Checking tower-retry v0.3.0
[INFO] [stderr]     Checking tower-make v0.3.0
[INFO] [stderr]     Checking tower-buffer v0.3.0
[INFO] [stderr]     Checking tower-limit v0.3.1
[INFO] [stderr]     Checking tower-util v0.3.1
[INFO] [stderr]     Checking h2 v0.2.6
[INFO] [stderr]     Checking tower-ready-cache v0.3.1
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]    Compiling tonic-build v0.2.0
[INFO] [stderr]     Checking tower-balance v0.3.0
[INFO] [stderr]     Checking tower v0.3.1
[INFO] [stderr]    Compiling arrow-flight v1.0.0
[INFO] [stderr]     Checking hyper v0.13.7
[INFO] [stderr]     Checking zstd-safe v2.0.5+zstd.1.4.5
[INFO] [stderr]     Checking zstd v0.5.3+zstd.1.4.5
[INFO] [stderr]     Checking tonic v0.2.1
[INFO] [stderr]     Checking arrow v1.0.0
[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/arrow-1.0.0/src/lib.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 24 | #![feature(specialization)]
[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 `arrow`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "2ef1a1ee0aaef9198edb8c3c81b68c75d0e890f4ccb81f4e9caa7481f28516f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ef1a1ee0aaef9198edb8c3c81b68c75d0e890f4ccb81f4e9caa7481f28516f2", kill_on_drop: false }`
[INFO] [stdout] 2ef1a1ee0aaef9198edb8c3c81b68c75d0e890f4ccb81f4e9caa7481f28516f2