[INFO] cloning repository https://github.com/asonix/ping-pong-bot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/asonix/ping-pong-bot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasonix%2Fping-pong-bot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasonix%2Fping-pong-bot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 794d9d4bb0a057f496ddc6f3573fb5c801106648
[INFO] documenting asonix/ping-pong-bot 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%2Fasonix%2Fping-pong-bot" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/asonix/ping-pong-bot 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/asonix/ping-pong-bot
[INFO] finished tweaking git repo https://github.com/asonix/ping-pong-bot
[INFO] tweaked toml for git repo https://github.com/asonix/ping-pong-bot written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/asonix/ping-pong-bot 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustc-demangle v0.1.5
[INFO] [stderr]   Downloaded tokio-timer v0.1.2
[INFO] [stderr]   Downloaded libc v0.2.34
[INFO] [stderr]   Downloaded socket2 v0.2.4
[INFO] [stderr]   Downloaded curl v0.4.8
[INFO] [stderr]   Downloaded mio v0.6.11
[INFO] [stderr]   Downloaded derive-error-chain v0.10.1
[INFO] [stderr]   Downloaded backtrace v0.3.4
[INFO] [stderr]   Downloaded openssl-probe v0.1.1
[INFO] [stderr]   Downloaded serde v1.0.23
[INFO] [stderr]   Downloaded openssl-sys v0.9.22
[INFO] [stderr]   Downloaded regex v0.2.3
[INFO] [stderr]   Downloaded serde_json v1.0.7
[INFO] [stderr]   Downloaded serde_derive v1.0.23
[INFO] [stderr]   Downloaded libz-sys v1.0.18
[INFO] [stderr]   Downloaded dotenv v0.10.1
[INFO] [stderr]   Downloaded curl-sys v0.3.15
[INFO] [stderr]   Downloaded telebot-derive v0.0.9
[INFO] [stderr]   Downloaded futures v0.1.17
[INFO] [stderr]   Downloaded tokio-curl v0.1.10
[INFO] [stderr]   Downloaded telebot v0.2.5
[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" "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] fd0ce2a0340008d24a09d3c365b47c789109382a8815dfa0ae4b1a2b71794770
[INFO] running `Command { std: "docker" "start" "-a" "fd0ce2a0340008d24a09d3c365b47c789109382a8815dfa0ae4b1a2b71794770", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd0ce2a0340008d24a09d3c365b47c789109382a8815dfa0ae4b1a2b71794770", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd0ce2a0340008d24a09d3c365b47c789109382a8815dfa0ae4b1a2b71794770", kill_on_drop: false }`
[INFO] [stdout] fd0ce2a0340008d24a09d3c365b47c789109382a8815dfa0ae4b1a2b71794770
[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" "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] [stdout] b00e0ee650e19e8ae4b4e67bd719c848eb2dcf82fedca0b8b515e9c80f12868c
[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" "b00e0ee650e19e8ae4b4e67bd719c848eb2dcf82fedca0b8b515e9c80f12868c", kill_on_drop: false }`
[INFO] [stderr]     Checking serde v1.0.23
[INFO] [stderr]     Checking openssl-probe v0.1.1
[INFO] [stderr]    Compiling libz-sys v1.0.18
[INFO] [stderr]    Compiling openssl-sys v0.9.22
[INFO] [stderr]    Compiling curl-sys v0.3.15
[INFO] [stderr]     Checking socket2 v0.2.4
[INFO] [stderr]     Checking tokio-timer v0.1.2
[INFO] [stderr]     Checking uuid v0.2.3
[INFO] [stderr]     Checking mio v0.6.11
[INFO] [stderr]     Checking tokio-io v0.1.4
[INFO] [stderr]     Checking thread_local v0.3.4
[INFO] [stderr]    Compiling serde_derive_internals v0.17.0
[INFO] [stderr]    Compiling telebot-derive v0.0.9
[INFO] [stderr]    Compiling derive-error-chain v0.10.1
[INFO] [stderr]     Checking backtrace v0.3.4
[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-0.0.9/src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 |     #![feature(try_from)]
[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/telebot-derive-0.0.9/src/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     #![feature(proc_macro, proc_macro_lib)]
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
[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/telebot-derive-0.0.9/src/lib.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 |     #![feature(try_from)]
[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/telebot-derive-0.0.9/src/lib.rs:2:28
[INFO] [stdout]   |
[INFO] [stdout] 2 |     #![feature(proc_macro, proc_macro_lib)]
[INFO] [stdout]   |                            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking regex v0.2.3
[INFO] [stderr]     Checking error-chain v0.10.0
[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 `telebot-derive` due to 5 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "b00e0ee650e19e8ae4b4e67bd719c848eb2dcf82fedca0b8b515e9c80f12868c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b00e0ee650e19e8ae4b4e67bd719c848eb2dcf82fedca0b8b515e9c80f12868c", kill_on_drop: false }`
[INFO] [stdout] b00e0ee650e19e8ae4b4e67bd719c848eb2dcf82fedca0b8b515e9c80f12868c