[INFO] fetching crate racer 2.1.42... [INFO] testing racer-2.1.42 against beta-2021-01-01 for beta-1.50-1 [INFO] extracting crate racer 2.1.42 into /workspace/builds/worker-4/source [INFO] validating manifest of crates.io crate racer 2.1.42 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 racer 2.1.42 [INFO] finished tweaking crates.io crate racer 2.1.42 [INFO] tweaked toml for crates.io crate racer 2.1.42 written to /workspace/builds/worker-4/source/Cargo.toml [INFO] crate crates.io crate racer 2.1.42 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 rustc-ap-rustc_arena v691.0.0 [INFO] [stderr] Downloaded cc v1.0.53 [INFO] [stderr] Downloaded rustc-ap-rustc_span v691.0.0 [INFO] [stderr] Downloaded rustc-ap-rustc_feature v691.0.0 [INFO] [stderr] Downloaded rustc-ap-rustc_lexer v691.0.0 [INFO] [stderr] Downloaded rustc-ap-rustc_data_structures v691.0.0 [INFO] [stderr] Downloaded rustc-ap-rustc_session v691.0.0 [INFO] [stderr] Downloaded rustc-ap-rustc_parse v691.0.0 [INFO] [stderr] Downloaded regex v1.3.6 [INFO] [stderr] Downloaded rustc-ap-rustc_serialize v691.0.0 [INFO] [stderr] Downloaded rustc-ap-rustc_ast v691.0.0 [INFO] [stderr] Downloaded rustc-ap-rustc_target v691.0.0 [INFO] [stderr] Downloaded rustc-ap-rustc_errors v691.0.0 [INFO] [stderr] Downloaded racer v2.1.41 [INFO] [stderr] Downloaded rustc-ap-rustc_graphviz v691.0.0 [INFO] [stderr] Downloaded tracing-core v0.1.15 [INFO] [stderr] Downloaded derive_more v0.99.5 [INFO] [stderr] Downloaded rustc-ap-rustc_fs_util v691.0.0 [INFO] [stderr] Downloaded racer-testutils v0.1.0 [INFO] [stderr] Downloaded psm v0.1.8 [INFO] [stderr] Downloaded rustc-ap-rustc_macros v691.0.0 [INFO] [stderr] Downloaded rustc-ap-rustc_lint_defs v691.0.0 [INFO] [stderr] Downloaded rustc-ap-rustc_index v691.0.0 [INFO] [stderr] Downloaded rustc-ap-rustc_ast_pretty v691.0.0 [INFO] [stderr] Downloaded serde_json v1.0.50 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stdout] 928143b8845543bdaf1eaa8fc4fe16ef38b34040bd56d7dde08aac8c6e283dc6 [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" "928143b8845543bdaf1eaa8fc4fe16ef38b34040bd56d7dde08aac8c6e283dc6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "928143b8845543bdaf1eaa8fc4fe16ef38b34040bd56d7dde08aac8c6e283dc6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "928143b8845543bdaf1eaa8fc4fe16ef38b34040bd56d7dde08aac8c6e283dc6", kill_on_drop: false }` [INFO] [stdout] 928143b8845543bdaf1eaa8fc4fe16ef38b34040bd56d7dde08aac8c6e283dc6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 796cc2991d08f4bbf4fdf9ea8caf6956898f7dce163a89a9b25c33594480d7af [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" "796cc2991d08f4bbf4fdf9ea8caf6956898f7dce163a89a9b25c33594480d7af", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.77 [INFO] [stderr] Compiling proc-macro2 v1.0.10 [INFO] [stderr] Compiling syn v1.0.17 [INFO] [stderr] Compiling smallvec v1.4.2 [INFO] [stderr] Compiling cc v1.0.53 [INFO] [stderr] Compiling rustc-rayon-core v0.3.0 [INFO] [stderr] Compiling opaque-debug v0.3.0 [INFO] [stderr] Compiling either v1.5.3 [INFO] [stderr] Compiling arrayvec v0.5.1 [INFO] [stderr] Compiling cpuid-bool v0.1.2 [INFO] [stderr] Compiling rustc-ap-rustc_graphviz v697.0.0 [INFO] [stderr] Compiling stable_deref_trait v1.1.1 [INFO] [stderr] Compiling scoped-tls v1.0.0 [INFO] [stderr] Compiling serde v1.0.105 [INFO] [stderr] Compiling ryu v1.0.3 [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/rustc-ap-rustc_graphviz-697.0.0/src/lib.rs:278:1 [INFO] [stdout] | [INFO] [stdout] 278 | #![feature(nll)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling annotate-snippets v0.8.0 [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/smallvec-1.4.2/src/lib.rs:74:32 [INFO] [stdout] | [INFO] [stdout] 74 | #![cfg_attr(feature = "union", feature(untagged_unions))] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [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/smallvec-1.4.2/src/lib.rs:77:37 [INFO] [stdout] | [INFO] [stdout] 77 | #![cfg_attr(feature = "may_dangle", feature(dropck_eyepatch))] [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 `rustc-ap-rustc_graphviz` [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] [stdout] error: aborting due to 2 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0554`. [INFO] [stdout] [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "796cc2991d08f4bbf4fdf9ea8caf6956898f7dce163a89a9b25c33594480d7af", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "796cc2991d08f4bbf4fdf9ea8caf6956898f7dce163a89a9b25c33594480d7af", kill_on_drop: false }` [INFO] [stdout] 796cc2991d08f4bbf4fdf9ea8caf6956898f7dce163a89a9b25c33594480d7af