[INFO] fetching crate tobytcp 0.13.0... [INFO] testing tobytcp-0.13.0 against beta-2021-09-08 for beta-1.56-1 [INFO] extracting crate tobytcp 0.13.0 into /workspace/builds/worker-7/source [INFO] validating manifest of crates.io crate tobytcp 0.13.0 on toolchain beta-2021-09-08 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate tobytcp 0.13.0 [INFO] finished tweaking crates.io crate tobytcp 0.13.0 [INFO] tweaked toml for crates.io crate tobytcp 0.13.0 written to /workspace/builds/worker-7/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded async-ready v3.0.0 [INFO] [stderr] Downloaded runtime-attributes v0.3.0-alpha.6 [INFO] [stderr] Downloaded futures-timer v0.3.0 [INFO] [stderr] Downloaded juliex v0.3.0-alpha.8 [INFO] [stderr] Downloaded async-datagram v3.0.0 [INFO] [stderr] Downloaded runtime v0.3.0-alpha.8 [INFO] [stderr] Downloaded romio v0.3.0-alpha.10 [INFO] [stderr] Downloaded runtime-native v0.3.0-alpha.6 [INFO] [stderr] Downloaded runtime-raw v0.3.0-alpha.5 [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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "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] 5b8bb7096dca2be69162776ee23775af7c98e5ce933318c1ccdee008a27db030 [INFO] running `Command { std: "docker" "start" "-a" "5b8bb7096dca2be69162776ee23775af7c98e5ce933318c1ccdee008a27db030", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5b8bb7096dca2be69162776ee23775af7c98e5ce933318c1ccdee008a27db030", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5b8bb7096dca2be69162776ee23775af7c98e5ce933318c1ccdee008a27db030", kill_on_drop: false }` [INFO] [stdout] 5b8bb7096dca2be69162776ee23775af7c98e5ce933318c1ccdee008a27db030 [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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c0aa5ed33ee2572aa78b7360228b9174266bc6a6fa62e47a4b0a94e7e98f72c1 [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" "c0aa5ed33ee2572aa78b7360228b9174266bc6a6fa62e47a4b0a94e7e98f72c1", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling futures-util-preview v0.3.0-alpha.19 [INFO] [stderr] Compiling futures-executor-preview v0.3.0-alpha.19 [INFO] [stderr] Compiling futures-preview v0.3.0-alpha.19 [INFO] [stderr] Compiling tobytcp v0.13.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel [INFO] [stdout] --> src/lib.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(async_await)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute [INFO] [stdout] | [INFO] [stdout] = help: the feature `async_await` has been stable since 1.39.0 and no longer requires an attribute to enable [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 `tobytcp` due to 2 previous errors [INFO] running `Command { std: "docker" "inspect" "c0aa5ed33ee2572aa78b7360228b9174266bc6a6fa62e47a4b0a94e7e98f72c1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c0aa5ed33ee2572aa78b7360228b9174266bc6a6fa62e47a4b0a94e7e98f72c1", kill_on_drop: false }` [INFO] [stdout] c0aa5ed33ee2572aa78b7360228b9174266bc6a6fa62e47a4b0a94e7e98f72c1