[INFO] cloning repository https://github.com/infinyon/rust-demo-apps
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/infinyon/rust-demo-apps" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Finfinyon%2Frust-demo-apps", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Finfinyon%2Frust-demo-apps'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3c334dce1ce74c19dbfe4cad17c5937bc12fe67d
[INFO] documenting infinyon/rust-demo-apps against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Finfinyon%2Frust-demo-apps" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/infinyon/rust-demo-apps on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/infinyon/rust-demo-apps
[INFO] finished tweaking git repo https://github.com/infinyon/rust-demo-apps
[INFO] tweaked toml for git repo https://github.com/infinyon/rust-demo-apps written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/infinyon/rust-demo-apps already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded async-trait v0.1.32
[INFO] [stderr]   Downloaded serde_qs v0.4.6
[INFO] [stderr]   Downloaded kf-protocol-derive v0.1.0
[INFO] [stderr]   Downloaded kf-protocol-fs v1.0.1
[INFO] [stderr]   Downloaded kf-protocol-api v0.1.0
[INFO] [stderr]   Downloaded crc32c v0.4.0
[INFO] [stderr]   Downloaded kf-protocol-core v0.1.1
[INFO] [stderr]   Downloaded flv-api-spu v1.1.0
[INFO] [stderr]   Downloaded flv-types v0.2.2
[INFO] [stderr]   Downloaded k8-obj-metadata v1.0.0
[INFO] [stderr]   Downloaded kf-protocol-transport v2.0.1
[INFO] [stderr]   Downloaded flv-metadata v1.0.0
[INFO] [stderr]   Downloaded k8-obj-app v1.0.0
[INFO] [stderr]   Downloaded k8-flv-metadata v1.0.0
[INFO] [stderr]   Downloaded flv-k8-partition v1.0.0
[INFO] [stderr]   Downloaded flv-k8-spu v1.0.0
[INFO] [stderr]   Downloaded flv-k8-topic v1.0.0
[INFO] [stderr]   Downloaded k8-obj-core v1.0.0
[INFO] [stderr]   Downloaded flv-api-sc v1.2.0
[INFO] [stderr]   Downloaded flv-future-aio v2.2.1
[INFO] [stderr]   Downloaded flv-util v0.1.1
[INFO] [stderr]   Downloaded flv-util v0.2.0
[INFO] [stderr]   Downloaded flv-types v0.1.0
[INFO] [stderr]   Downloaded flv-k8-spg v1.0.0
[INFO] [stderr]   Downloaded kf-protocol-message v0.1.1
[INFO] [stderr]   Downloaded kf-socket v2.0.0
[INFO] [stderr]   Downloaded kf-protocol v1.1.3
[INFO] [stderr]   Downloaded flv-client v3.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "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] 60629b0a4b509257c9c89871abd71a171491ba4c81c8415a45c7547ae9f89c8e
[INFO] running `Command { std: "docker" "start" "-a" "60629b0a4b509257c9c89871abd71a171491ba4c81c8415a45c7547ae9f89c8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "60629b0a4b509257c9c89871abd71a171491ba4c81c8415a45c7547ae9f89c8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60629b0a4b509257c9c89871abd71a171491ba4c81c8415a45c7547ae9f89c8e", kill_on_drop: false }`
[INFO] [stdout] 60629b0a4b509257c9c89871abd71a171491ba4c81c8415a45c7547ae9f89c8e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "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] 16370f39d6c28f7cc0e7ddfa7eba3bc246c7e944fcb3023d219344f6f8404faf
[INFO] running `Command { std: "docker" "start" "-a" "16370f39d6c28f7cc0e7ddfa7eba3bc246c7e944fcb3023d219344f6f8404faf", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling syn v1.0.30
[INFO] [stderr]    Compiling serde v1.0.111
[INFO] [stderr]     Checking futures-io v0.3.4
[INFO] [stderr]     Checking once_cell v1.3.1
[INFO] [stderr]     Checking data-encoding v2.2.0
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]    Compiling crc32c v0.4.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling backtrace-sys v0.1.34
[INFO] [stderr]    Compiling ring v0.16.14
[INFO] [stderr]    Compiling error-chain v0.12.2
[INFO] [stderr]     Checking lock_api v0.3.3
[INFO] [stderr]     Checking tokio v0.2.21
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking content_inspector v0.2.4
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr]     Checking crossbeam-utils v0.7.2
[INFO] [stderr]     Checking regex v1.3.5
[INFO] [stderr]     Checking num-integer v0.1.42
[INFO] [stderr]     Checking kv-log-macro v1.0.4
[INFO] [stderr]     Checking flv-types v0.1.0
[INFO] [stderr]     Checking flv-types v0.2.2
[INFO] [stderr]     Checking crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking crossbeam-channel v0.4.2
[INFO] [stderr]    Compiling kf-protocol-derive v0.1.0
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking parking_lot_core v0.7.0
[INFO] [stderr]     Checking async-task v1.3.1
[INFO] [stderr]     Checking num_cpus v1.12.0
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking backtrace v0.3.45
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking parking_lot v0.10.0
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking http v0.1.21
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking parking_lot v0.4.8
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking chashmap v2.2.2
[INFO] [stderr]     Checking webpki v0.21.3
[INFO] [stderr]     Checking sct v0.6.0
[INFO] [stderr]     Checking flv-util v0.2.0
[INFO] [stderr]     Checking flv-util v0.1.1
[INFO] [stderr]     Checking webpki-roots v0.19.0
[INFO] [stderr]     Checking rustls v0.17.0
[INFO] [stderr]    Compiling serde_derive v1.0.111
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling pin-project-internal v0.4.8
[INFO] [stderr]    Compiling async-trait v0.1.32
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]    Compiling paste-impl v0.1.7
[INFO] [stderr]     Checking pin-project v0.4.8
[INFO] [stderr]     Checking paste v0.1.7
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]     Checking futures-executor v0.3.4
[INFO] [stderr]     Checking broadcaster v1.0.0
[INFO] [stderr]     Checking async-std v1.5.0
[INFO] [stderr]     Checking futures v0.3.4
[INFO] [stderr]     Checking async-tls v0.7.0
[INFO] [stderr]     Checking serde_qs v0.4.6
[INFO] [stderr]     Checking serde_json v1.0.53
[INFO] [stderr]     Checking kf-protocol-core v0.1.1
[INFO] [stderr]     Checking toml v0.5.6
[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/kf-protocol-core-0.1.1/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![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 `kf-protocol-core` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "16370f39d6c28f7cc0e7ddfa7eba3bc246c7e944fcb3023d219344f6f8404faf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16370f39d6c28f7cc0e7ddfa7eba3bc246c7e944fcb3023d219344f6f8404faf", kill_on_drop: false }`
[INFO] [stdout] 16370f39d6c28f7cc0e7ddfa7eba3bc246c7e944fcb3023d219344f6f8404faf