[INFO] updating cached 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" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 794d9d4bb0a057f496ddc6f3573fb5c801106648
[INFO] testing asonix/ping-pong-bot against 1.45.2 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasonix%2Fping-pong-bot" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/asonix/ping-pong-bot on toolchain 1.45.2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", 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-2/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" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5aa0b8600ab780503adc9e26b44afd2458f8a5048c8711bceb27926552d69d4b
[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" "5aa0b8600ab780503adc9e26b44afd2458f8a5048c8711bceb27926552d69d4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5aa0b8600ab780503adc9e26b44afd2458f8a5048c8711bceb27926552d69d4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5aa0b8600ab780503adc9e26b44afd2458f8a5048c8711bceb27926552d69d4b", kill_on_drop: false }`
[INFO] [stdout] 5aa0b8600ab780503adc9e26b44afd2458f8a5048c8711bceb27926552d69d4b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2ae5d1b388eba9a6818789976f95539e74f24b544b9f92b00bd12ab572e47f61
[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" "2ae5d1b388eba9a6818789976f95539e74f24b544b9f92b00bd12ab572e47f61", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures v0.1.17
[INFO] [stderr]    Compiling serde v1.0.23
[INFO] [stderr]    Compiling libz-sys v1.0.18
[INFO] [stderr]    Compiling openssl-sys v0.9.22
[INFO] [stderr]    Compiling iovec v0.1.1
[INFO] [stderr]    Compiling curl-sys v0.3.15
[INFO] [stderr]    Compiling net2 v0.2.31
[INFO] [stderr]    Compiling socket2 v0.2.4
[INFO] [stderr]    Compiling rand v0.3.18
[INFO] [stderr]    Compiling serde_derive_internals v0.17.0
[INFO] [stderr]    Compiling derive-error-chain v0.10.1
[INFO] [stderr]    Compiling telebot-derive v0.0.9
[INFO] [stderr]    Compiling regex v0.2.3
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]    Compiling bytes v0.4.5
[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] 
[INFO] [stdout] error: aborting due to 2 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`.
[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" "2ae5d1b388eba9a6818789976f95539e74f24b544b9f92b00bd12ab572e47f61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ae5d1b388eba9a6818789976f95539e74f24b544b9f92b00bd12ab572e47f61", kill_on_drop: false }`
[INFO] [stdout] 2ae5d1b388eba9a6818789976f95539e74f24b544b9f92b00bd12ab572e47f61