[INFO] fetching crate safina-sync 0.1.3...
[INFO] testing safina-sync-0.1.3 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate safina-sync 0.1.3 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate safina-sync 0.1.3 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate safina-sync 0.1.3
[INFO] finished tweaking crates.io crate safina-sync 0.1.3
[INFO] tweaked toml for crates.io crate safina-sync 0.1.3 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded safina-async-test v0.1.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "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] d17fdeebb17815b51e519c546aba08b361629036d197da46387f6410bb1b07c3
[INFO] running `Command { std: "docker" "start" "-a" "d17fdeebb17815b51e519c546aba08b361629036d197da46387f6410bb1b07c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d17fdeebb17815b51e519c546aba08b361629036d197da46387f6410bb1b07c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d17fdeebb17815b51e519c546aba08b361629036d197da46387f6410bb1b07c3", kill_on_drop: false }`
[INFO] [stdout] d17fdeebb17815b51e519c546aba08b361629036d197da46387f6410bb1b07c3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d461c7513cf7e2702ed6b62ee4a5655c03c901f3e7308c03c4abc0d4aa77134b
[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" "d461c7513cf7e2702ed6b62ee4a5655c03c901f3e7308c03c4abc0d4aa77134b", kill_on_drop: false }`
[INFO] [stderr]    Compiling safina-sync v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "d461c7513cf7e2702ed6b62ee4a5655c03c901f3e7308c03c4abc0d4aa77134b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d461c7513cf7e2702ed6b62ee4a5655c03c901f3e7308c03c4abc0d4aa77134b", kill_on_drop: false }`
[INFO] [stdout] d461c7513cf7e2702ed6b62ee4a5655c03c901f3e7308c03c4abc0d4aa77134b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 697c12a96592c36472caa945e582d53d0bb89eb708a08de4886062545cb494ad
[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" "697c12a96592c36472caa945e582d53d0bb89eb708a08de4886062545cb494ad", kill_on_drop: false }`
[INFO] [stderr]    Compiling safina-threadpool v0.1.2
[INFO] [stderr]    Compiling safina-sync v0.1.3
[INFO] [stderr]    Compiling safina-timer v0.1.6
[INFO] [stderr]    Compiling safina-async-test v0.1.7
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/safina-timer-0.1.6/src/lib.rs:171:1
[INFO] [stdout]     |
[INFO] [stdout] 171 | #![feature(once_cell)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/safina-timer-0.1.6/src/lib.rs:172:1
[INFO] [stdout]     |
[INFO] [stdout] 172 | #![feature(wake_trait)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling safina-executor v0.1.4
[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 `safina-timer`
[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] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/safina-executor-0.1.4/src/lib.rs:142:1
[INFO] [stdout]     |
[INFO] [stdout] 142 | #![feature(wake_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: build failed
[INFO] running `Command { std: "docker" "inspect" "697c12a96592c36472caa945e582d53d0bb89eb708a08de4886062545cb494ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "697c12a96592c36472caa945e582d53d0bb89eb708a08de4886062545cb494ad", kill_on_drop: false }`
[INFO] [stdout] 697c12a96592c36472caa945e582d53d0bb89eb708a08de4886062545cb494ad