[INFO] cloning repository https://github.com/gugahoa/ww-subscribe
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gugahoa/ww-subscribe" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgugahoa%2Fww-subscribe", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgugahoa%2Fww-subscribe'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 53eb69877330b1d117e6f155f80add6fb3d3d02e
[INFO] documenting gugahoa/ww-subscribe 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%2Fgugahoa%2Fww-subscribe" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gugahoa/ww-subscribe 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/gugahoa/ww-subscribe
[INFO] finished tweaking git repo https://github.com/gugahoa/ww-subscribe
[INFO] tweaked toml for git repo https://github.com/gugahoa/ww-subscribe written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/gugahoa/ww-subscribe 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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 15ca0dc6510bd0080914bccfff15f87c024f6d10c80089c7168107b010b6d344
[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" "15ca0dc6510bd0080914bccfff15f87c024f6d10c80089c7168107b010b6d344", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "15ca0dc6510bd0080914bccfff15f87c024f6d10c80089c7168107b010b6d344", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15ca0dc6510bd0080914bccfff15f87c024f6d10c80089c7168107b010b6d344", kill_on_drop: false }`
[INFO] [stdout] 15ca0dc6510bd0080914bccfff15f87c024f6d10c80089c7168107b010b6d344
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d3cea630e0d9070cbcef2edd01ff12aabfb78b8821ed3300646aeef8563b7c82
[INFO] running `Command { std: "docker" "start" "-a" "d3cea630e0d9070cbcef2edd01ff12aabfb78b8821ed3300646aeef8563b7c82", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.32
[INFO] [stderr]    Compiling openssl v0.10.20
[INFO] [stderr]    Compiling derive_builder v0.7.1
[INFO] [stderr]    Compiling unicase v2.3.0
[INFO] [stderr]    Compiling miniz_oxide_c_api v0.2.1
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking num_cpus v1.10.0
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]    Compiling openssl-sys v0.9.43
[INFO] [stderr]     Checking backtrace-sys v0.1.28
[INFO] [stderr]     Checking erased-serde v0.3.9
[INFO] [stderr]     Checking uuid v0.6.5
[INFO] [stderr]     Checking cookie v0.11.0
[INFO] [stderr]     Checking serde_urlencoded v0.5.5
[INFO] [stderr]     Checking backtrace v0.3.15
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]    Compiling telebot-derive v0.0.12
[INFO] [stderr]     Checking error-chain v0.12.0
[INFO] [stderr]     Checking rayon v1.0.3
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking http v0.1.17
[INFO] [stderr]     Checking publicsuffix v1.5.2
[INFO] [stderr]     Checking flate2 v1.0.7
[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/telebot-derive-0.0.12/src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 |     #![feature(try_from)]
[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 `telebot-derive`
[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" "d3cea630e0d9070cbcef2edd01ff12aabfb78b8821ed3300646aeef8563b7c82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3cea630e0d9070cbcef2edd01ff12aabfb78b8821ed3300646aeef8563b7c82", kill_on_drop: false }`
[INFO] [stdout] d3cea630e0d9070cbcef2edd01ff12aabfb78b8821ed3300646aeef8563b7c82
