[INFO] cloning repository https://github.com/mbStavola/kiki [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mbStavola/kiki" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FmbStavola%2Fkiki", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FmbStavola%2Fkiki'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] fe463715b59715f92197a7e6fa204042e4d8527c [INFO] documenting mbStavola/kiki against beta-2020-08-29 for beta-1.47-rustdoc-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FmbStavola%2Fkiki" "/workspace/builds/worker-1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/mbStavola/kiki on toolchain beta-2020-08-29 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/mbStavola/kiki [INFO] finished tweaking git repo https://github.com/mbStavola/kiki [INFO] tweaked toml for git repo https://github.com/mbStavola/kiki written to /workspace/builds/worker-1/source/Cargo.toml [INFO] crate git repo https://github.com/mbStavola/kiki already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded tracing-core v0.1.6 [INFO] [stderr] Downloaded tokio-threadpool v0.2.0-alpha.1 [INFO] [stderr] Downloaded async-trait v0.1.13 [INFO] [stderr] Downloaded tokio-codec v0.2.0-alpha.1 [INFO] [stderr] Downloaded tokio-executor v0.2.0-alpha.1 [INFO] [stderr] Downloaded tokio-uds v0.3.0-alpha.1 [INFO] [stderr] Downloaded futures-core-preview v0.3.0-alpha.17 [INFO] [stderr] Downloaded tokio-tcp v0.2.0-alpha.1 [INFO] [stderr] Downloaded tokio-udp v0.2.0-alpha.1 [INFO] [stderr] Downloaded tokio-current-thread v0.2.0-alpha.1 [INFO] [stderr] Downloaded futures-util-preview v0.3.0-alpha.17 [INFO] [stderr] Downloaded tokio-timer v0.3.0-alpha.1 [INFO] [stderr] Downloaded futures-sink-preview v0.3.0-alpha.17 [INFO] [stderr] Downloaded tokio-io v0.2.0-alpha.1 [INFO] [stderr] Downloaded tokio-macros v0.2.0-alpha.1 [INFO] [stderr] Downloaded tokio-reactor v0.2.0-alpha.1 [INFO] [stderr] Downloaded tokio v0.2.0-alpha.1 [INFO] [stderr] Downloaded tokio-fs v0.2.0-alpha.1 [INFO] [stderr] Downloaded tokio-sync v0.2.0-alpha.1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 005c2a46bc9eb330a8b8371098e0a3c27312ceeff57117332d8fb7a6f29c6866 [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" "005c2a46bc9eb330a8b8371098e0a3c27312ceeff57117332d8fb7a6f29c6866", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "005c2a46bc9eb330a8b8371098e0a3c27312ceeff57117332d8fb7a6f29c6866", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "005c2a46bc9eb330a8b8371098e0a3c27312ceeff57117332d8fb7a6f29c6866", kill_on_drop: false }` [INFO] [stdout] 005c2a46bc9eb330a8b8371098e0a3c27312ceeff57117332d8fb7a6f29c6866 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "RUSTDOCFLAGS=--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" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b43545bf335bc4d3ac758950686c0b38dc247ede5407b073f27ce8a475e4beec [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" "b43545bf335bc4d3ac758950686c0b38dc247ede5407b073f27ce8a475e4beec", kill_on_drop: false }` [INFO] [stderr] Checking futures-core-preview v0.3.0-alpha.17 [INFO] [stderr] Checking tokio-executor v0.2.0-alpha.1 [INFO] [stderr] Compiling proc-macro2 v1.0.4 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Compiling syn v1.0.5 [INFO] [stderr] Compiling backtrace-sys v0.1.31 [INFO] [stderr] Checking tracing-core v0.1.6 [INFO] [stderr] Checking iovec v0.1.2 [INFO] [stderr] Checking net2 v0.2.33 [INFO] [stderr] Checking parking_lot_core v0.6.2 [INFO] [stderr] Checking crossbeam-epoch v0.7.2 [INFO] [stderr] Checking bytes v0.4.12 [INFO] [stderr] Checking futures-sink-preview v0.3.0-alpha.17 [INFO] [stderr] Checking tokio-current-thread v0.2.0-alpha.1 [INFO] [stderr] Checking futures-util-preview v0.3.0-alpha.17 [INFO] [stderr] Checking parking_lot v0.9.0 [INFO] [stderr] Checking mio v0.6.19 [INFO] [stderr] Checking crossbeam-deque v0.7.1 [INFO] [stderr] Checking tokio-io v0.2.0-alpha.1 [INFO] [stderr] Checking tokio-codec v0.2.0-alpha.1 [INFO] [stderr] Checking backtrace v0.3.38 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Checking mio-uds v0.6.7 [INFO] [stderr] Checking tokio-sync v0.2.0-alpha.1 [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/tokio-sync-0.2.0-alpha.1/src/lib.rs:10:1 [INFO] [stdout] | [INFO] [stdout] 10 | #![feature(async_await)] [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 `tokio-sync`. [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" "b43545bf335bc4d3ac758950686c0b38dc247ede5407b073f27ce8a475e4beec", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b43545bf335bc4d3ac758950686c0b38dc247ede5407b073f27ce8a475e4beec", kill_on_drop: false }` [INFO] [stdout] b43545bf335bc4d3ac758950686c0b38dc247ede5407b073f27ce8a475e4beec