[INFO] updating cached repository https://github.com/entropic-dev/dstopic
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 71d2558e380fc53dd148e326679ba32301c85dba
[INFO] checking entropic-dev/dstopic against beta-2019-10-27 for pr-65897
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fentropic-dev%2Fdstopic" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/entropic-dev/dstopic 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 git repo https://github.com/entropic-dev/dstopic
[INFO] removed workspace from git repo https://github.com/entropic-dev/dstopic
[INFO] finished tweaking git repo https://github.com/entropic-dev/dstopic
[INFO] tweaked toml for git repo https://github.com/entropic-dev/dstopic written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/entropic-dev/dstopic 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"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" "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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] cba087ed29c84b079216c5f92773bca74a51a6835f2ba7d54533e6d6bbf49fd0
[INFO] running `"docker" "start" "-a" "cba087ed29c84b079216c5f92773bca74a51a6835f2ba7d54533e6d6bbf49fd0"`
[INFO] [stderr]     Checking mkdirp v1.0.0
[INFO] [stderr]     Checking want v0.2.0
[INFO] [stderr]     Checking getrandom v0.1.6
[INFO] [stderr]    Compiling hyper v0.12.31
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]     Checking miniz_oxide_c_api v0.2.2
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking regex v1.1.9
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking tokio-buf v0.1.1
[INFO] [stderr]     Checking string v0.2.1
[INFO] [stderr]     Checking openssl v0.10.23
[INFO] [stderr]     Checking error-chain v0.12.1
[INFO] [stderr]     Checking sha2 v0.8.0
[INFO] [stderr]     Checking sha-1 v0.8.1
[INFO] [stderr]     Checking rand_core v0.5.0
[INFO] [stderr]     Checking flate2 v1.0.9
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking http-body v0.1.0
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]     Checking h2 v0.1.25
[INFO] [stderr]     Checking rand_chacha v0.2.0
[INFO] [stderr]     Checking publicsuffix v1.5.2
[INFO] [stderr]     Checking tokio-threadpool v0.1.15
[INFO] [stderr]     Checking chownr v2.0.0
[INFO] [stderr]     Checking ssri v3.0.0
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking cookie_store v0.7.0
[INFO] [stderr]     Checking native-tls v0.2.3
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking cacache v1.0.1
[INFO] [stderr]     Checking hyper-tls v0.3.2
[INFO] [stderr]     Checking reqwest v0.9.18
[INFO] [stderr]     Checking dstopic v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(async_await)]
[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 `dstopic`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(async_await)]
[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 `dstopic`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "cba087ed29c84b079216c5f92773bca74a51a6835f2ba7d54533e6d6bbf49fd0"`
[INFO] running `"docker" "rm" "-f" "cba087ed29c84b079216c5f92773bca74a51a6835f2ba7d54533e6d6bbf49fd0"`
[INFO] [stdout] cba087ed29c84b079216c5f92773bca74a51a6835f2ba7d54533e6d6bbf49fd0