[INFO] fetching crate real-async-trait 0.0.2... [INFO] testing real-async-trait-0.0.2 against 1.55.0 for beta-1.56-1 [INFO] extracting crate real-async-trait 0.0.2 into /workspace/builds/worker-2/source [INFO] validating manifest of crates.io crate real-async-trait 0.0.2 on toolchain 1.55.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate real-async-trait 0.0.2 [INFO] finished tweaking crates.io crate real-async-trait 0.0.2 [INFO] tweaked toml for crates.io crate real-async-trait 0.0.2 written to /workspace/builds/worker-2/source/Cargo.toml [INFO] crate crates.io crate real-async-trait 0.0.2 already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 3ffeb342e3c4afbfa8fa617a2c03752cdaae896408b993481e7cf67e8404d5cb [INFO] running `Command { std: "docker" "start" "-a" "3ffeb342e3c4afbfa8fa617a2c03752cdaae896408b993481e7cf67e8404d5cb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3ffeb342e3c4afbfa8fa617a2c03752cdaae896408b993481e7cf67e8404d5cb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3ffeb342e3c4afbfa8fa617a2c03752cdaae896408b993481e7cf67e8404d5cb", kill_on_drop: false }` [INFO] [stdout] 3ffeb342e3c4afbfa8fa617a2c03752cdaae896408b993481e7cf67e8404d5cb [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 608090f45911858f2397c760af12438725d5d8b89c694b0d1812dd05b89e4604 [INFO] running `Command { std: "docker" "start" "-a" "608090f45911858f2397c760af12438725d5d8b89c694b0d1812dd05b89e4604", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling syn v1.0.34 [INFO] [stderr] Compiling real-async-trait v0.0.2 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 13.58s [INFO] running `Command { std: "docker" "inspect" "608090f45911858f2397c760af12438725d5d8b89c694b0d1812dd05b89e4604", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "608090f45911858f2397c760af12438725d5d8b89c694b0d1812dd05b89e4604", kill_on_drop: false }` [INFO] [stdout] 608090f45911858f2397c760af12438725d5d8b89c694b0d1812dd05b89e4604 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f42bbeb76245e6f9dfe21463121405c2978f03808ec509cd91dabf2e0d8236ae [INFO] running `Command { std: "docker" "start" "-a" "f42bbeb76245e6f9dfe21463121405c2978f03808ec509cd91dabf2e0d8236ae", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling pin-project-internal v0.4.22 [INFO] [stderr] Compiling memchr v2.3.3 [INFO] [stderr] Compiling libc v0.2.72 [INFO] [stderr] Compiling futures-sink v0.3.5 [INFO] [stderr] Compiling once_cell v1.4.0 [INFO] [stderr] Compiling futures-core v0.3.5 [INFO] [stderr] Compiling slab v0.4.2 [INFO] [stderr] Compiling futures-io v0.3.5 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Compiling parking v1.0.4 [INFO] [stderr] Compiling waker-fn v1.0.0 [INFO] [stderr] Compiling cache-padded v1.1.1 [INFO] [stderr] Compiling async-task v3.0.0 [INFO] [stderr] Compiling scoped-tls v1.0.0 [INFO] [stderr] Compiling fastrand v1.3.3 [INFO] [stderr] Compiling pin-project-lite v0.1.7 [INFO] [stderr] Compiling crossbeam-utils v0.7.2 [INFO] [stderr] Compiling async-attributes v1.1.1 [INFO] [stderr] Compiling concurrent-queue v1.1.1 [INFO] [stderr] Compiling futures-task v0.3.5 [INFO] [stderr] Compiling futures-channel v0.3.5 [INFO] [stderr] Compiling kv-log-macro v1.0.7 [INFO] [stderr] Compiling socket2 v0.3.12 [INFO] [stderr] Compiling num_cpus v1.13.0 [INFO] [stderr] Compiling pin-project v0.4.22 [INFO] [stderr] Compiling futures-util v0.3.5 [INFO] [stderr] Compiling blocking v0.4.6 [INFO] [stderr] Compiling smol v0.1.18 [INFO] [stderr] Compiling async-std v1.6.2 [INFO] [stderr] Compiling real-async-trait v0.0.2 (/opt/rustwide/workdir) [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> examples/simple.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(generic_associated_types, type_alias_impl_trait)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: `impl Trait` in type aliases is unstable [INFO] [stdout] --> examples/simple.rs:25:1 [INFO] [stdout] | [INFO] [stdout] 25 | #[real_async_trait] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #63063 for more information [INFO] [stdout] = note: this error originates in the attribute macro `real_async_trait` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `type_alias_impl_trait` is incomplete and may not be safe to use and/or cause compiler crashes [INFO] [stdout] --> examples/simple.rs:1:38 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(generic_associated_types, type_alias_impl_trait)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(incomplete_features)]` on by default [INFO] [stdout] = note: see issue #63063 for more information [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0554, E0658. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0554`. [INFO] [stdout] [INFO] [stderr] error: could not compile `real-async-trait` due to 3 previous errors; 1 warning emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "f42bbeb76245e6f9dfe21463121405c2978f03808ec509cd91dabf2e0d8236ae", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f42bbeb76245e6f9dfe21463121405c2978f03808ec509cd91dabf2e0d8236ae", kill_on_drop: false }` [INFO] [stdout] f42bbeb76245e6f9dfe21463121405c2978f03808ec509cd91dabf2e0d8236ae