[INFO] crate generic_cong_avoid 0.2.1 is already in cache
[INFO] checking generic_cong_avoid-0.2.1 against beta-2019-10-27 for pr-65897
[INFO] extracting crate generic_cong_avoid 0.2.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate generic_cong_avoid 0.2.1 on toolchain beta-2019-10-27
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate generic_cong_avoid 0.2.1
[INFO] finished tweaking crates.io crate generic_cong_avoid 0.2.1
[INFO] tweaked toml for crates.io crate generic_cong_avoid 0.2.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[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=allow" "-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-2019-10-27" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 3784dab1bf5dce32261d9b3ad1b92124babd32664d791d070161e35674451f0b
[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" "3784dab1bf5dce32261d9b3ad1b92124babd32664d791d070161e35674451f0b"`
[INFO] [stderr]    Compiling winapi v0.3.8
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]     Checking syn v0.15.44
[INFO] [stderr]     Checking slog-term v2.4.2
[INFO] [stderr]     Checking winconsole v0.10.0
[INFO] [stderr]     Checking colored v1.8.0
[INFO] [stderr]     Checking structopt v0.2.18
[INFO] [stderr]     Checking portus v0.5.1
[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/portus-0.5.1/src/lib.rs:69:1
[INFO] [stderr]    |
[INFO] [stderr] 69 | #![feature(box_patterns)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[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/portus-0.5.1/src/lib.rs:70:1
[INFO] [stderr]    |
[INFO] [stderr] 70 | #![feature(integer_atomics)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[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/portus-0.5.1/src/lib.rs:71:1
[INFO] [stderr]    |
[INFO] [stderr] 71 | #![feature(never_type)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[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/portus-0.5.1/src/lib.rs:72:1
[INFO] [stderr]    |
[INFO] [stderr] 72 | #![feature(stmt_expr_attributes)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[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/portus-0.5.1/src/lib.rs:73:1
[INFO] [stderr]    |
[INFO] [stderr] 73 | #![feature(test)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 5 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `portus`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "3784dab1bf5dce32261d9b3ad1b92124babd32664d791d070161e35674451f0b"`
[INFO] running `"docker" "rm" "-f" "3784dab1bf5dce32261d9b3ad1b92124babd32664d791d070161e35674451f0b"`
[INFO] [stdout] 3784dab1bf5dce32261d9b3ad1b92124babd32664d791d070161e35674451f0b