[INFO] fetching crate zenoh-router 0.5.0-beta.3...
[INFO] testing zenoh-router-0.5.0-beta.3 against 1.47.0 for beta-1.48-1
[INFO] extracting crate zenoh-router 0.5.0-beta.3 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate zenoh-router 0.5.0-beta.3 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 zenoh-router 0.5.0-beta.3
[INFO] finished tweaking crates.io crate zenoh-router 0.5.0-beta.3
[INFO] tweaked toml for crates.io crate zenoh-router 0.5.0-beta.3 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate zenoh-router 0.5.0-beta.3 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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f2644ecad1b01e6701fe0216289d0123b5689b410609397db7bd3c3a0ba33634
[INFO] running `Command { std: "docker" "start" "-a" "f2644ecad1b01e6701fe0216289d0123b5689b410609397db7bd3c3a0ba33634", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2644ecad1b01e6701fe0216289d0123b5689b410609397db7bd3c3a0ba33634", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2644ecad1b01e6701fe0216289d0123b5689b410609397db7bd3c3a0ba33634", kill_on_drop: false }`
[INFO] [stdout] f2644ecad1b01e6701fe0216289d0123b5689b410609397db7bd3c3a0ba33634
[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] acd348b1887335796ba4179bc57faad96a1976a9675dfdef269017f89e75d577
[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" "acd348b1887335796ba4179bc57faad96a1976a9675dfdef269017f89e75d577", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.42
[INFO] [stderr]    Compiling term v0.4.6
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]    Compiling bitflags v0.5.0
[INFO] [stderr]    Compiling pnet_base v0.26.0
[INFO] [stderr]    Compiling async-task v3.0.0
[INFO] [stderr]    Compiling pnet v0.26.0
[INFO] [stderr]    Compiling serde_json v1.0.58
[INFO] [stderr]    Compiling libloading v0.6.3
[INFO] [stderr]    Compiling standback v0.2.10
[INFO] [stderr]    Compiling syntex_pos v0.42.0
[INFO] [stderr]    Compiling async-channel v1.5.0
[INFO] [stderr]    Compiling pnet_sys v0.26.0
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling futures-lite v1.10.1
[INFO] [stderr]    Compiling polling v2.0.0
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling aes-soft v0.4.0
[INFO] [stderr]    Compiling pnet_macros_support v0.26.0
[INFO] [stderr]    Compiling uuid v0.8.1
[INFO] [stderr]    Compiling aes v0.4.0
[INFO] [stderr]    Compiling aes-gcm v0.6.0
[INFO] [stderr]    Compiling syntex_errors v0.42.0
[INFO] [stderr]    Compiling syntex_syntax v0.42.0
[INFO] [stderr]    Compiling async-io v1.1.9
[INFO] [stderr]    Compiling async-executor v1.3.0
[INFO] [stderr]    Compiling blocking v1.0.1
[INFO] [stderr]    Compiling async-global-executor v1.3.0
[INFO] [stderr]    Compiling async-std v1.6.4
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]    Compiling pin-project-internal v0.4.26
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
[INFO] [stderr]    Compiling futures-macro v0.3.6
[INFO] [stderr]    Compiling thiserror-impl v1.0.21
[INFO] [stderr]    Compiling async-trait v0.1.41
[INFO] [stderr]    Compiling time-macros v0.1.1
[INFO] [stderr]    Compiling time v0.2.22
[INFO] [stderr]    Compiling uhlc v0.2.0
[INFO] [stderr]    Compiling thiserror v1.0.21
[INFO] [stderr]    Compiling pin-project v0.4.26
[INFO] [stderr]    Compiling futures-util v0.3.6
[INFO] [stderr]    Compiling syntex v0.42.2
[INFO] [stderr]    Compiling cookie v0.14.2
[INFO] [stderr]    Compiling pnet_macros v0.26.0
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling futures-executor v0.3.6
[INFO] [stderr]    Compiling futures v0.3.6
[INFO] [stderr]    Compiling pnet_packet v0.26.0
[INFO] [stderr]    Compiling ipnetwork v0.16.0
[INFO] [stderr]    Compiling url v2.1.1
[INFO] [stderr]    Compiling serde_urlencoded v0.7.0
[INFO] [stderr]    Compiling serde_qs v0.7.0
[INFO] [stderr]    Compiling pnet_datalink v0.26.0
[INFO] [stderr]    Compiling http-types v2.5.0
[INFO] [stderr]    Compiling pnet_transport v0.26.0
[INFO] [stderr]    Compiling zenoh-util v0.5.0-beta.3
[INFO] [stderr]    Compiling zenoh-protocol v0.5.0-beta.3
[INFO] [stderr]    Compiling zenoh-router v0.5.0-beta.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | #![feature(get_mut_unchecked)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | #![feature(async_closure)]
[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 `zenoh-router`.
[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" "acd348b1887335796ba4179bc57faad96a1976a9675dfdef269017f89e75d577", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "acd348b1887335796ba4179bc57faad96a1976a9675dfdef269017f89e75d577", kill_on_drop: false }`
[INFO] [stdout] acd348b1887335796ba4179bc57faad96a1976a9675dfdef269017f89e75d577
