[INFO] crate seed_style_preview 0.1.4 is already in cache
[INFO] testing seed_style_preview-0.1.4 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate seed_style_preview 0.1.4 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate seed_style_preview 0.1.4 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 seed_style_preview 0.1.4
[INFO] finished tweaking crates.io crate seed_style_preview 0.1.4
[INFO] tweaked toml for crates.io crate seed_style_preview 0.1.4 written to /workspace/builds/worker-3/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] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] [stdout] f735c716e4b5ff298f41ab015e740f533a4fc3130685bc3c3e5829af14f70892
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "f735c716e4b5ff298f41ab015e740f533a4fc3130685bc3c3e5829af14f70892"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling syn v1.0.30
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling pulldown-cmark v0.7.1
[INFO] [stderr]    Compiling enclose v1.1.8
[INFO] [stderr]    Compiling slotmap v0.4.0
[INFO] [stderr]    Compiling objekt v0.1.2
[INFO] [stderr]    Compiling harsh v0.1.7
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.12
[INFO] [stderr]    Compiling proc-macro-error v0.4.12
[INFO] [stderr]    Compiling time v0.2.16
[INFO] [stderr]    Compiling seed v0.7.0
[INFO] [stderr]    Compiling dbg v1.0.4
[INFO] [stderr]    Compiling futures-channel v0.3.5
[INFO] [stderr]    Compiling standback v0.2.9
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling objekt-clonable-impl v0.2.2
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling objekt-clonable v0.2.2
[INFO] [stderr]    Compiling uuid v0.8.1
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.63
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.63
[INFO] [stderr]    Compiling serde_derive v1.0.111
[INFO] [stderr]    Compiling pin-project-internal v0.4.19
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling topo-macro v0.9.0
[INFO] [stderr]    Compiling derive_more v0.99.7
[INFO] [stderr]    Compiling seed_style_macros v0.1.2
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.63
[INFO] [stderr]    Compiling time-macros v0.1.0
[INFO] [stderr]    Compiling illicit-macro v0.9.0
[INFO] [stderr]    Compiling illicit v0.9.2
[INFO] [stderr]    Compiling cookie v0.13.3
[INFO] [stderr]    Compiling topo v0.9.4
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/topo-0.9.4/src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(track_caller)]
[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 `topo`.
[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 `"docker" "inspect" "f735c716e4b5ff298f41ab015e740f533a4fc3130685bc3c3e5829af14f70892"`
[INFO] running `"docker" "rm" "-f" "f735c716e4b5ff298f41ab015e740f533a4fc3130685bc3c3e5829af14f70892"`
[INFO] [stdout] f735c716e4b5ff298f41ab015e740f533a4fc3130685bc3c3e5829af14f70892