[INFO] fetching crate calamine 0.16.0...
[INFO] checking calamine-0.16.0 against beta-2019-10-27 for pr-65897
[INFO] extracting crate calamine 0.16.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate calamine 0.16.0 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 calamine 0.16.0
[INFO] finished tweaking crates.io crate calamine 0.16.0
[INFO] tweaked toml for crates.io crate calamine 0.16.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate calamine 0.16.0 already has a lockfile, it will not be regenerated
[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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] c88b0ef048717d4b1ff8625b9b28d95d19867d5c04bbd1ca990b1ea58fa80f80
[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" "c88b0ef048717d4b1ff8625b9b28d95d19867d5c04bbd1ca990b1ea58fa80f80"`
[INFO] [stderr]    Compiling libc v0.2.59
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]    Compiling regex v1.1.9
[INFO] [stderr]    Compiling serde v1.0.99
[INFO] [stderr]     Checking utf8-ranges v1.0.3
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]     Checking encoding_rs v0.8.20
[INFO] [stderr]     Checking miniz_oxide v0.3.2
[INFO] [stderr]     Checking regex-syntax v0.6.8
[INFO] [stderr]     Checking crc32fast v1.2.0
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking aho-corasick v0.7.4
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking flate2 v1.0.11
[INFO] [stderr]     Checking atty v0.2.12
[INFO] [stderr]     Checking zip v0.5.3
[INFO] [stderr]     Checking quick-xml v0.17.0
[INFO] [stderr]     Checking codepage v0.1.1
[INFO] [stderr]     Checking env_logger v0.7.0
[INFO] [stderr]     Checking calamine v0.16.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> benches/basic.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(test)]
[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 `calamine`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "c88b0ef048717d4b1ff8625b9b28d95d19867d5c04bbd1ca990b1ea58fa80f80"`
[INFO] running `"docker" "rm" "-f" "c88b0ef048717d4b1ff8625b9b28d95d19867d5c04bbd1ca990b1ea58fa80f80"`
[INFO] [stdout] c88b0ef048717d4b1ff8625b9b28d95d19867d5c04bbd1ca990b1ea58fa80f80