[INFO] fetching crate loader-rs 0.7.0... [INFO] testing loader-rs-0.7.0 against beta-2021-01-01 for beta-1.50-1 [INFO] extracting crate loader-rs 0.7.0 into /workspace/builds/worker-9/source [INFO] validating manifest of crates.io crate loader-rs 0.7.0 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 loader-rs 0.7.0 [INFO] finished tweaking crates.io crate loader-rs 0.7.0 [INFO] tweaked toml for crates.io crate loader-rs 0.7.0 written to /workspace/builds/worker-9/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] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded assert-json-diff v1.1.0 [INFO] [stderr] Downloaded derive_builder_core v0.9.0 [INFO] [stderr] Downloaded cached v0.22.0 [INFO] [stderr] Downloaded test-case v1.0.0 [INFO] [stderr] Downloaded cached_proc_macro v0.6.0 [INFO] [stderr] Downloaded cached_proc_macro_types v0.1.0 [INFO] [stderr] Downloaded derive_builder v0.9.0 [INFO] [stderr] Downloaded mockito v0.28.0 [INFO] [stderr] Downloaded async-compression v0.3.7 [INFO] [stderr] Downloaded extend v0.1.2 [INFO] [stderr] Downloaded join-lazy-fmt v0.9.2 [INFO] [stderr] Downloaded json-trait-rs v0.11.0 [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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] cbeae02bc6e64b77e494d9570b0114a3b8496dfaa553726c96b269df90fc65c8 [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" "cbeae02bc6e64b77e494d9570b0114a3b8496dfaa553726c96b269df90fc65c8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "cbeae02bc6e64b77e494d9570b0114a3b8496dfaa553726c96b269df90fc65c8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cbeae02bc6e64b77e494d9570b0114a3b8496dfaa553726c96b269df90fc65c8", kill_on_drop: false }` [INFO] [stdout] cbeae02bc6e64b77e494d9570b0114a3b8496dfaa553726c96b269df90fc65c8 [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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 60010f2f08f706da0e308181ded97549fb6065941731bfc4b05f06183712bed1 [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" "60010f2f08f706da0e308181ded97549fb6065941731bfc4b05f06183712bed1", kill_on_drop: false }` [INFO] [stderr] Compiling cached_proc_macro_types v0.1.0 [INFO] [stderr] Compiling parking_lot_core v0.8.2 [INFO] [stderr] Compiling tokio v0.2.24 [INFO] [stderr] Compiling darling_core v0.10.2 [INFO] [stderr] Compiling flate2 v1.0.19 [INFO] [stderr] Compiling strum_macros v0.20.1 [INFO] [stderr] Compiling futures-util v0.3.8 [INFO] [stderr] Compiling parking_lot v0.11.1 [INFO] [stderr] Compiling async-compression v0.3.7 [INFO] [stderr] Compiling darling_macro v0.10.2 [INFO] [stderr] Compiling tokio-util v0.3.1 [INFO] [stderr] Compiling tokio-tls v0.3.1 [INFO] [stderr] Compiling h2 v0.2.7 [INFO] [stderr] Compiling futures-executor v0.3.8 [INFO] [stderr] Compiling darling v0.10.2 [INFO] [stderr] Compiling cached_proc_macro v0.6.0 [INFO] [stderr] Compiling futures v0.3.8 [INFO] [stderr] Compiling cached v0.22.0 [INFO] [stderr] Compiling hyper v0.13.9 [INFO] [stderr] Compiling hyper-tls v0.4.3 [INFO] [stderr] Compiling reqwest v0.10.10 [INFO] [stderr] Compiling loader-rs v0.7.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel [INFO] [stdout] --> src/lib.rs:43:1 [INFO] [stdout] | [INFO] [stdout] 43 | #![feature(specialization)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes [INFO] [stdout] --> src/lib.rs:43:12 [INFO] [stdout] | [INFO] [stdout] 43 | #![feature(specialization)] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: the lint level is defined here [INFO] [stdout] --> src/lib.rs:36:5 [INFO] [stdout] | [INFO] [stdout] 36 | warnings, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] = note: `#[warn(incomplete_features)]` implied by `#[warn(warnings)]` [INFO] [stdout] = note: see issue #31844 for more information [INFO] [stdout] = help: consider using `min_specialization` instead, which is more stable and complete [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0554`. [INFO] [stdout] [INFO] [stderr] error: could not compile `loader-rs` [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" "60010f2f08f706da0e308181ded97549fb6065941731bfc4b05f06183712bed1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "60010f2f08f706da0e308181ded97549fb6065941731bfc4b05f06183712bed1", kill_on_drop: false }` [INFO] [stdout] 60010f2f08f706da0e308181ded97549fb6065941731bfc4b05f06183712bed1