[INFO] cloning repository https://github.com/zolkko/rust-katas [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zolkko/rust-katas" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzolkko%2Frust-katas", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzolkko%2Frust-katas'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 8a1cd26e4df59a8d8224d5807c57f4ad4aff8fef [INFO] testing zolkko/rust-katas against beta-2021-01-01 for beta-1.50-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzolkko%2Frust-katas" "/workspace/builds/worker-9/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/zolkko/rust-katas 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] removed /workspace/builds/worker-9/source/.cargo/config [INFO] started tweaking git repo https://github.com/zolkko/rust-katas [INFO] finished tweaking git repo https://github.com/zolkko/rust-katas [INFO] tweaked toml for git repo https://github.com/zolkko/rust-katas written to /workspace/builds/worker-9/source/Cargo.toml [INFO] crate git repo https://github.com/zolkko/rust-katas already has a lockfile, it will not be regenerated [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 futures-preview v0.3.0-alpha.18 [INFO] [stderr] Downloaded ndarray v0.12.1 [INFO] [stderr] Downloaded futures-io-preview v0.3.0-alpha.18 [INFO] [stderr] Downloaded futures-sink-preview v0.3.0-alpha.18 [INFO] [stderr] Downloaded futures-executor-preview v0.3.0-alpha.18 [INFO] [stderr] Downloaded futures-channel-preview v0.3.0-alpha.18 [INFO] [stderr] Downloaded futures-join-macro-preview v0.3.0-alpha.18 [INFO] [stderr] Downloaded futures-util-preview v0.3.0-alpha.18 [INFO] [stderr] Downloaded proc-macro2 v1.0.3 [INFO] [stderr] Downloaded matrixmultiply v0.1.15 [INFO] [stderr] Downloaded itertools v0.7.11 [INFO] [stderr] Downloaded futures-select-macro-preview v0.3.0-alpha.18 [INFO] [stderr] Downloaded proc-macro-hack v0.5.9 [INFO] [stderr] Downloaded futures-core-preview v0.3.0-alpha.18 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/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] 4744b3c8ead3aee1cec9b5ba0e753fbc3b559e61cdfd88fc79246b78356c4e9a [INFO] running `Command { std: "docker" "start" "-a" "4744b3c8ead3aee1cec9b5ba0e753fbc3b559e61cdfd88fc79246b78356c4e9a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "4744b3c8ead3aee1cec9b5ba0e753fbc3b559e61cdfd88fc79246b78356c4e9a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4744b3c8ead3aee1cec9b5ba0e753fbc3b559e61cdfd88fc79246b78356c4e9a", kill_on_drop: false }` [INFO] [stdout] 4744b3c8ead3aee1cec9b5ba0e753fbc3b559e61cdfd88fc79246b78356c4e9a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 1787955a004ba92d0a2bd68777ae25af8eda246f888f4a83a6d4eeb47d1a1112 [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" "1787955a004ba92d0a2bd68777ae25af8eda246f888f4a83a6d4eeb47d1a1112", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.3 [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Compiling syn v1.0.5 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Compiling autocfg v0.1.6 [INFO] [stderr] Compiling futures-core-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling memchr v2.2.1 [INFO] [stderr] Compiling proc-macro-nested v0.1.3 [INFO] [stderr] Compiling futures v0.1.29 [INFO] [stderr] Compiling pin-utils v0.1.0-alpha.4 [INFO] [stderr] Compiling futures-io-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling matrixmultiply v0.1.15 [INFO] [stderr] Compiling either v1.5.2 [INFO] [stderr] Compiling rawpointer v0.1.0 [INFO] [stderr] Compiling ndarray v0.12.1 [INFO] [stderr] Compiling rust-katas v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Compiling itertools v0.7.11 [INFO] [stderr] Compiling futures-sink-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling num_cpus v1.10.1 [INFO] [stderr] Compiling rand_chacha v0.2.1 [INFO] [stderr] Compiling futures-channel-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling num-traits v0.2.8 [INFO] [stderr] Compiling num-complex v0.2.3 [INFO] [stderr] Compiling rand v0.7.0 [INFO] [stderr] Compiling quote v0.6.13 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Compiling proc-macro-hack v0.5.9 [INFO] [stderr] Compiling futures-select-macro-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling futures-join-macro-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling futures-util-preview v0.3.0-alpha.18 [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/futures-util-preview-0.3.0-alpha.18/src/lib.rs:4:38 [INFO] [stdout] | [INFO] [stdout] 4 | #![cfg_attr(feature = "async-await", 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 `futures-util-preview` [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `Command { std: "docker" "inspect" "1787955a004ba92d0a2bd68777ae25af8eda246f888f4a83a6d4eeb47d1a1112", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1787955a004ba92d0a2bd68777ae25af8eda246f888f4a83a6d4eeb47d1a1112", kill_on_drop: false }` [INFO] [stdout] 1787955a004ba92d0a2bd68777ae25af8eda246f888f4a83a6d4eeb47d1a1112