[INFO] cloning repository https://github.com/htrefil/tg-bot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/htrefil/tg-bot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhtrefil%2Ftg-bot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhtrefil%2Ftg-bot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 450875c213364c9e9b4e91c532468a0e058432a3
[INFO] testing htrefil/tg-bot against 1.47.0 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhtrefil%2Ftg-bot" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/htrefil/tg-bot on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/htrefil/tg-bot
[INFO] finished tweaking git repo https://github.com/htrefil/tg-bot
[INFO] tweaked toml for git repo https://github.com/htrefil/tg-bot written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/htrefil/tg-bot already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f67035f377e6c555793d45338eea4557755835003fc50af5a442f0a5ec1ae92f
[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" "f67035f377e6c555793d45338eea4557755835003fc50af5a442f0a5ec1ae92f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f67035f377e6c555793d45338eea4557755835003fc50af5a442f0a5ec1ae92f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f67035f377e6c555793d45338eea4557755835003fc50af5a442f0a5ec1ae92f", kill_on_drop: false }`
[INFO] [stdout] f67035f377e6c555793d45338eea4557755835003fc50af5a442f0a5ec1ae92f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "RUSTFLAGS=--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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f0a7aea5c44e46c4067ee7389e2e1700b1b8084b095c392bc137e902a8a387a8
[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" "f0a7aea5c44e46c4067ee7389e2e1700b1b8084b095c392bc137e902a8a387a8", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling tokio-executor v0.1.8
[INFO] [stderr]    Compiling futures-util-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling mio v0.6.19
[INFO] [stderr]    Compiling error-chain v0.11.0
[INFO] [stderr]    Compiling tokio-io v0.1.12
[INFO] [stderr]    Compiling native-tls v0.2.3
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling tokio-threadpool v0.1.16
[INFO] [stderr]    Compiling tokio-timer v0.2.11
[INFO] [stderr]    Compiling tokio-current-thread v0.1.6
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling mime_guess v1.8.7
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling mio-uds v0.6.7
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling tokio-codec v0.1.1
[INFO] [stderr]    Compiling tokio-reactor v0.1.10
[INFO] [stderr]    Compiling rand v0.7.2
[INFO] [stderr]    Compiling tokio-fs v0.1.6
[INFO] [stderr]    Compiling tokio-udp v0.1.5
[INFO] [stderr]    Compiling tokio-uds v0.2.5
[INFO] [stderr]    Compiling tokio-tcp v0.1.3
[INFO] [stderr]    Compiling tokio v0.1.22
[INFO] [stderr]    Compiling ordered-float v1.0.2
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling multipart v0.16.1
[INFO] [stderr]    Compiling tokio-sync v0.2.0-alpha.6
[INFO] [stderr]    Compiling futures-executor-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling futures-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling pin-project-internal v0.4.5
[INFO] [stderr]    Compiling tracing-attributes v0.1.5
[INFO] [stderr]    Compiling serde_derive v1.0.101
[INFO] [stderr]    Compiling tokio-macros v0.2.0-alpha.6
[INFO] [stderr]    Compiling structopt-derive v0.3.3
[INFO] [stderr]    Compiling tracing v0.1.10
[INFO] [stderr]    Compiling tokio-executor v0.2.0-alpha.6
[INFO] [stderr]    Compiling structopt v0.3.3
[INFO] [stderr]    Compiling pin-project v0.4.5
[INFO] [stderr]    Compiling tokio-io v0.2.0-alpha.6
[INFO] [stderr]    Compiling tracing-futures v0.1.0
[INFO] [stderr]    Compiling tokio-timer v0.3.0-alpha.6
[INFO] [stderr]    Compiling tokio-codec v0.2.0-alpha.6
[INFO] [stderr]    Compiling tokio-fs v0.2.0-alpha.6
[INFO] [stderr]    Compiling tower-make v0.3.0-alpha.2a
[INFO] [stderr]    Compiling tokio-tls v0.3.0-alpha.6
[INFO] [stderr]    Compiling tokio-net v0.2.0-alpha.6
[INFO] [stderr]    Compiling h2 v0.2.0-alpha.3
[INFO] [stderr]    Compiling tokio v0.2.0-alpha.6
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]    Compiling hyper v0.13.0-alpha.4
[INFO] [stderr]    Compiling hyper-tls v0.4.0-alpha.4
[INFO] [stderr]    Compiling serde_json v1.0.41
[INFO] [stderr]    Compiling serde-value v0.5.3
[INFO] [stderr]    Compiling telegram-bot-raw v0.7.0-alpha.0 (https://github.com/telegram-rs/telegram-bot?rev=9b514902f191f7dc0a76ba50486789092ee3f59c#9b514902)
[INFO] [stderr]    Compiling telegram-bot v0.7.0-alpha.0 (https://github.com/telegram-rs/telegram-bot?rev=9b514902f191f7dc0a76ba50486789092ee3f59c#9b514902)
[INFO] [stderr]    Compiling tg-bot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(process_exitcode_placeholder)]
[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 `tg-bot`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "f0a7aea5c44e46c4067ee7389e2e1700b1b8084b095c392bc137e902a8a387a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0a7aea5c44e46c4067ee7389e2e1700b1b8084b095c392bc137e902a8a387a8", kill_on_drop: false }`
[INFO] [stdout] f0a7aea5c44e46c4067ee7389e2e1700b1b8084b095c392bc137e902a8a387a8
