[INFO] fetching crate deluge-rpc 0.7.0...
[INFO] testing deluge-rpc-0.7.0 against 1.47.0 for beta-1.48-1
[INFO] extracting crate deluge-rpc 0.7.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate deluge-rpc 0.7.0 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 crates.io crate deluge-rpc 0.7.0
[INFO] finished tweaking crates.io crate deluge-rpc 0.7.0
[INFO] tweaked toml for crates.io crate deluge-rpc 0.7.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] cfd266ab6c3d4224b55854566f14fdfeefeb1b4186c7f7e28a59b76849671181
[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" "cfd266ab6c3d4224b55854566f14fdfeefeb1b4186c7f7e28a59b76849671181", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cfd266ab6c3d4224b55854566f14fdfeefeb1b4186c7f7e28a59b76849671181", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cfd266ab6c3d4224b55854566f14fdfeefeb1b4186c7f7e28a59b76849671181", kill_on_drop: false }`
[INFO] [stdout] cfd266ab6c3d4224b55854566f14fdfeefeb1b4186c7f7e28a59b76849671181
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 33d28d9019ed54d8fcc71e5e19fe9fb941a9a30d51bdbba3761e9f48a4259f01
[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" "33d28d9019ed54d8fcc71e5e19fe9fb941a9a30d51bdbba3761e9f48a4259f01", kill_on_drop: false }`
[INFO] [stderr]    Compiling lazy-regex v0.1.4
[INFO] [stderr]    Compiling webpki v0.21.3
[INFO] [stderr]    Compiling sct v0.6.0
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling derivative v2.1.1
[INFO] [stderr]    Compiling enum-kinds v0.5.0
[INFO] [stderr]    Compiling deluge-rpc-macro v0.6.2
[INFO] [stderr]    Compiling hex v0.4.2
[INFO] [stderr]    Compiling ron v0.6.2
[INFO] [stderr]    Compiling rencode v0.2.1
[INFO] [stderr]    Compiling num_enum_derive v0.5.1
[INFO] [stderr]    Compiling rustls v0.17.0
[INFO] [stderr]    Compiling tokio v0.2.22
[INFO] [stderr]    Compiling num_enum v0.5.1
[INFO] [stderr]    Compiling tokio-rustls v0.13.1
[INFO] [stderr]    Compiling deluge-rpc v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(str_strip)] // sorry
[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 `deluge-rpc`.
[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" "33d28d9019ed54d8fcc71e5e19fe9fb941a9a30d51bdbba3761e9f48a4259f01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33d28d9019ed54d8fcc71e5e19fe9fb941a9a30d51bdbba3761e9f48a4259f01", kill_on_drop: false }`
[INFO] [stdout] 33d28d9019ed54d8fcc71e5e19fe9fb941a9a30d51bdbba3761e9f48a4259f01
