[INFO] cloning repository https://github.com/jnferner/uzh-biomed-bot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jnferner/uzh-biomed-bot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjnferner%2Fuzh-biomed-bot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjnferner%2Fuzh-biomed-bot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 191f995c1d9df7b20d24760a437d496732ec5a4b
[INFO] testing jnferner/uzh-biomed-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%2Fjnferner%2Fuzh-biomed-bot" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jnferner/uzh-biomed-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/jnferner/uzh-biomed-bot
[INFO] finished tweaking git repo https://github.com/jnferner/uzh-biomed-bot
[INFO] tweaked toml for git repo https://github.com/jnferner/uzh-biomed-bot written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/jnferner/uzh-biomed-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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 89e486d1dc58640d7992993f3ca04c7cd9e040d4fe508e845df1df7305d0e8fd
[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" "89e486d1dc58640d7992993f3ca04c7cd9e040d4fe508e845df1df7305d0e8fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89e486d1dc58640d7992993f3ca04c7cd9e040d4fe508e845df1df7305d0e8fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89e486d1dc58640d7992993f3ca04c7cd9e040d4fe508e845df1df7305d0e8fd", kill_on_drop: false }`
[INFO] [stdout] 89e486d1dc58640d7992993f3ca04c7cd9e040d4fe508e845df1df7305d0e8fd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 254430e8fb108e0d9e92ad73ce4470ee82b114235a08a1da88906d0dc7073f05
[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" "254430e8fb108e0d9e92ad73ce4470ee82b114235a08a1da88906d0dc7073f05", kill_on_drop: false }`
[INFO] [stderr]    Compiling typed-headers v0.2.0
[INFO] [stderr]    Compiling clokwerk v0.3.3
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling tracing-attributes v0.1.11
[INFO] [stderr]    Compiling native-tls v0.2.4
[INFO] [stderr]    Compiling pmutil v0.5.3
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling futures-util v0.3.5
[INFO] [stderr]    Compiling is-macro v0.1.8
[INFO] [stderr]    Compiling tracing v0.1.19
[INFO] [stderr]    Compiling tokio v0.2.22
[INFO] [stderr]    Compiling tracing-futures v0.2.4
[INFO] [stderr]    Compiling futures-executor v0.3.5
[INFO] [stderr]    Compiling futures v0.3.5
[INFO] [stderr]    Compiling tokio-util v0.3.1
[INFO] [stderr]    Compiling tokio-tls v0.3.1
[INFO] [stderr]    Compiling h2 v0.2.6
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]    Compiling hyper v0.13.8
[INFO] [stderr]    Compiling hyper-tls v0.4.3
[INFO] [stderr]    Compiling hyper-proxy v0.6.0
[INFO] [stderr]    Compiling tbot v0.5.3
[INFO] [stderr]    Compiling uzh-biomed-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(type_alias_impl_trait)]
[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 `uzh-biomed-bot`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "254430e8fb108e0d9e92ad73ce4470ee82b114235a08a1da88906d0dc7073f05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "254430e8fb108e0d9e92ad73ce4470ee82b114235a08a1da88906d0dc7073f05", kill_on_drop: false }`
[INFO] [stdout] 254430e8fb108e0d9e92ad73ce4470ee82b114235a08a1da88906d0dc7073f05
