[INFO] cloning repository https://github.com/tonyb983/rust-note-cli
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tonyb983/rust-note-cli" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftonyb983%2Frust-note-cli", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftonyb983%2Frust-note-cli'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 66b80f9358b171d362c5f0bb43055696f86a589c
[INFO] documenting tonyb983/rust-note-cli against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftonyb983%2Frust-note-cli" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tonyb983/rust-note-cli 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 git repo https://github.com/tonyb983/rust-note-cli
[INFO] finished tweaking git repo https://github.com/tonyb983/rust-note-cli
[INFO] tweaked toml for git repo https://github.com/tonyb983/rust-note-cli written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/tonyb983/rust-note-cli already has a lockfile, it will not be regenerated
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 5fa31021c0cc3d1c7dabf41f688b8a6b7f60f14093ed9197bb9ada7aecf089d2
[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" "5fa31021c0cc3d1c7dabf41f688b8a6b7f60f14093ed9197bb9ada7aecf089d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5fa31021c0cc3d1c7dabf41f688b8a6b7f60f14093ed9197bb9ada7aecf089d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fa31021c0cc3d1c7dabf41f688b8a6b7f60f14093ed9197bb9ada7aecf089d2", kill_on_drop: false }`
[INFO] [stdout] 5fa31021c0cc3d1c7dabf41f688b8a6b7f60f14093ed9197bb9ada7aecf089d2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] eb8a1bb8562888fa83943c75fcf8b7c6422cb5d12e5d0438b58a7ff91bcfca0c
[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" "eb8a1bb8562888fa83943c75fcf8b7c6422cb5d12e5d0438b58a7ff91bcfca0c", kill_on_drop: false }`
[INFO] [stderr]    Compiling barrel v0.6.5
[INFO] [stderr]     Checking ansi_term v0.7.5
[INFO] [stderr]     Checking strum v0.8.0
[INFO] [stderr]     Checking strum v0.21.0
[INFO] [stderr]     Checking seahorse v1.1.2
[INFO] [stderr]    Compiling crossbeam-queue v0.3.2
[INFO] [stderr]     Checking dirs-sys v0.3.6
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]    Compiling may_queue v0.1.8
[INFO] [stderr]    Compiling generator v0.7.0
[INFO] [stderr]    Compiling may v0.3.19
[INFO] [stderr]     Checking nix v0.19.1
[INFO] [stderr]     Checking mio v0.7.13
[INFO] [stderr]    Compiling vte_generate_state_changes v0.1.1
[INFO] [stderr]    Compiling strum_macros v0.8.0
[INFO] [stderr]     Checking signal-hook v0.3.9
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling concat-idents v1.1.3
[INFO] [stderr]    Compiling strum_macros v0.21.1
[INFO] [stderr]     Checking env_logger v0.8.4
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking defer-drop v1.0.1
[INFO] [stderr]    Compiling structopt-derive v0.4.15
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.2
[INFO] [stderr]     Checking console v0.14.1
[INFO] [stderr]     Checking textwrap v0.12.1
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]    Compiling cli v0.1.0 (/opt/rustwide/workdir/crates/cli)
[INFO] [stderr]     Checking time v0.2.27
[INFO] [stderr]     Checking crossbeam v0.8.1
[INFO] [stderr]     Checking signal-hook-mio v0.2.1
[INFO] [stderr]     Checking term v0.6.1
[INFO] [stderr]     Checking vte v0.9.0
[INFO] [stderr]     Checking crossterm v0.20.0
[INFO] [stderr]     Checking indicatif v0.16.2
[INFO] [stderr]     Checking dialoguer v0.8.0
[INFO] [stderr]     Checking tuikit v0.4.5
[INFO] [stderr]     Checking spinner v0.5.0
[INFO] [stderr]     Checking timer v0.2.0
[INFO] [stderr]     Checking spinners v1.2.0
[INFO] [stderr]     Checking pflag v0.6.2
[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/pflag-0.6.2/src/lib.rs:37:1
[INFO] [stdout]    |
[INFO] [stdout] 37 | #![feature(const_type_id)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/pflag-0.6.2/src/lib.rs:38:1
[INFO] [stdout]    |
[INFO] [stdout] 38 | #![feature(type_name_of_val)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/pflag-0.6.2/src/lib.rs:39:1
[INFO] [stdout]    |
[INFO] [stdout] 39 | #![feature(test)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/pflag-0.6.2/src/lib.rs:40:1
[INFO] [stdout]    |
[INFO] [stdout] 40 | #![feature(duration_constants)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 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 compile `pflag`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "eb8a1bb8562888fa83943c75fcf8b7c6422cb5d12e5d0438b58a7ff91bcfca0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb8a1bb8562888fa83943c75fcf8b7c6422cb5d12e5d0438b58a7ff91bcfca0c", kill_on_drop: false }`
[INFO] [stdout] eb8a1bb8562888fa83943c75fcf8b7c6422cb5d12e5d0438b58a7ff91bcfca0c
