[INFO] fetching crate nature_db 0.7.0... [INFO] testing nature_db-0.7.0 against beta-2020-06-03 for beta-1.45-1 [INFO] extracting crate nature_db 0.7.0 into /workspace/builds/worker-0/source [INFO] validating manifest of crates.io crate nature_db 0.7.0 on toolchain beta-2020-06-03 [INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking crates.io crate nature_db 0.7.0 [INFO] finished tweaking crates.io crate nature_db 0.7.0 [INFO] tweaked toml for crates.io crate nature_db 0.7.0 written to /workspace/builds/worker-0/source/Cargo.toml [INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] fb0c0838fa7a37ee96ae40aa03fb7382141337fbb8993851b4adc32149b392aa [INFO] running `"docker" "start" "-a" "fb0c0838fa7a37ee96ae40aa03fb7382141337fbb8993851b4adc32149b392aa"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling syn v1.0.30 [INFO] [stderr] Compiling once_cell v1.4.0 [INFO] [stderr] Compiling proc-macro-hack v0.5.16 [INFO] [stderr] Compiling futures-io v0.3.5 [INFO] [stderr] Compiling copyless v0.1.5 [INFO] [stderr] Compiling base64 v0.12.1 [INFO] [stderr] Compiling futures-channel v0.3.5 [INFO] [stderr] Compiling num-traits v0.2.11 [INFO] [stderr] Compiling mysqlclient-sys v0.2.4 [INFO] [stderr] Compiling lru-cache v0.1.2 [INFO] [stderr] Compiling num-integer v0.1.42 [INFO] [stderr] Compiling idna v0.2.0 [INFO] [stderr] Compiling unicase v2.6.0 [INFO] [stderr] Compiling signal-hook-registry v1.2.0 [INFO] [stderr] Compiling parking_lot_core v0.7.2 [INFO] [stderr] Compiling hostname v0.3.1 [INFO] [stderr] Compiling fxhash v0.2.1 [INFO] [stderr] Compiling threadpool v1.8.1 [INFO] [stderr] Compiling futures-task v0.3.5 [INFO] [stderr] Compiling resolv-conf v0.6.3 [INFO] [stderr] Compiling native-tls v0.2.4 [INFO] [stderr] Compiling tokio v0.2.21 [INFO] [stderr] Compiling uuid v0.8.1 [INFO] [stderr] Compiling parking_lot v0.10.2 [INFO] [stderr] Compiling mime_guess v2.0.3 [INFO] [stderr] Compiling scheduled-thread-pool v0.2.4 [INFO] [stderr] Compiling url v2.1.1 [INFO] [stderr] Compiling r2d2 v0.8.8 [INFO] [stderr] Compiling chrono v0.4.11 [INFO] [stderr] Compiling serde_urlencoded v0.6.1 [INFO] [stderr] Compiling tokio-util v0.3.1 [INFO] [stderr] Compiling tokio-util v0.2.0 [INFO] [stderr] Compiling tokio-tls v0.3.1 [INFO] [stderr] Compiling actix-codec v0.2.0 [INFO] [stderr] Compiling synstructure v0.12.3 [INFO] [stderr] Compiling pin-project-internal v0.4.19 [INFO] [stderr] Compiling futures-macro v0.3.5 [INFO] [stderr] Compiling derive_more v0.99.7 [INFO] [stderr] Compiling failure_derive v0.1.8 [INFO] [stderr] Compiling enum-as-inner v0.3.2 [INFO] [stderr] Compiling actix-macros v0.1.2 [INFO] [stderr] Compiling async-trait v0.1.33 [INFO] [stderr] Compiling actix_derive v0.5.0 [INFO] [stderr] Compiling serde_derive v1.0.111 [INFO] [stderr] Compiling diesel_derives v1.4.1 [INFO] [stderr] Compiling failure v0.1.8 [INFO] [stderr] Compiling pin-project v0.4.19 [INFO] [stderr] Compiling futures-util v0.3.5 [INFO] [stderr] Compiling actix-threadpool v0.3.2 [INFO] [stderr] Compiling diesel v1.4.4 [INFO] [stderr] Compiling futures-executor v0.3.5 [INFO] [stderr] Compiling h2 v0.2.5 [INFO] [stderr] Compiling actix-rt v1.1.1 [INFO] [stderr] Compiling actix-service v1.0.5 [INFO] [stderr] Compiling futures v0.3.5 [INFO] [stderr] Compiling trust-dns-proto v0.18.0-alpha.2 [INFO] [stderr] Compiling actix-utils v1.0.6 [INFO] [stderr] Compiling trust-dns-resolver v0.18.0-alpha.2 [INFO] [stderr] Compiling hyper v0.13.6 [INFO] [stderr] Compiling actix-connect v1.0.2 [INFO] [stderr] Compiling actix-http v1.0.1 [INFO] [stderr] Compiling hyper-tls v0.4.1 [INFO] [stderr] Compiling reqwest v0.10.6 [INFO] [stderr] Compiling actix v0.9.0 [INFO] [stderr] Compiling nature_common v0.7.0 [INFO] [stderr] Compiling nature_db v0.7.0 (/opt/rustwide/workdir) [INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel [INFO] [stderr] --> src/lib.rs:2:1 [INFO] [stderr] | [INFO] [stderr] 2 | #![feature(rustc_private)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: aborting due to previous error [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0554`. [INFO] [stderr] error: could not compile `nature_db`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "fb0c0838fa7a37ee96ae40aa03fb7382141337fbb8993851b4adc32149b392aa"` [INFO] running `"docker" "rm" "-f" "fb0c0838fa7a37ee96ae40aa03fb7382141337fbb8993851b4adc32149b392aa"` [INFO] [stdout] fb0c0838fa7a37ee96ae40aa03fb7382141337fbb8993851b4adc32149b392aa