[INFO] updating cached repository https://github.com/matematikaadit/pantau-wifi-rumah
[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] 569fb67fb69d5cf602b07c7a6398997a7453abe6
[INFO] testing matematikaadit/pantau-wifi-rumah against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatematikaadit%2Fpantau-wifi-rumah" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/matematikaadit/pantau-wifi-rumah 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 git repo https://github.com/matematikaadit/pantau-wifi-rumah
[INFO] finished tweaking git repo https://github.com/matematikaadit/pantau-wifi-rumah
[INFO] tweaked toml for git repo https://github.com/matematikaadit/pantau-wifi-rumah written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/matematikaadit/pantau-wifi-rumah already has a lockfile, it will not be regenerated
[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-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] d001918b2b47a67d6ee06c17600061f02da7b788a01bfa496c96017168e7854f
[INFO] running `"docker" "start" "-a" "d001918b2b47a67d6ee06c17600061f02da7b788a01bfa496c96017168e7854f"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.34
[INFO] [stderr]    Compiling version_check v0.1.3
[INFO] [stderr]    Compiling byteorder v1.2.1
[INFO] [stderr]    Compiling log v0.3.8
[INFO] [stderr]    Compiling pkg-config v0.3.9
[INFO] [stderr]    Compiling cc v1.0.3
[INFO] [stderr]    Compiling futures v0.1.17
[INFO] [stderr]    Compiling rayon-core v1.3.0
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling either v1.4.0
[INFO] [stderr]    Compiling matches v0.1.6
[INFO] [stderr]    Compiling lazy_static v1.0.0
[INFO] [stderr]    Compiling unicode-normalization v0.1.5
[INFO] [stderr]    Compiling siphasher v0.2.2
[INFO] [stderr]    Compiling serde v1.0.24
[INFO] [stderr]    Compiling cfg-if v0.1.2
[INFO] [stderr]    Compiling slab v0.3.0
[INFO] [stderr]    Compiling gcc v0.3.54
[INFO] [stderr]    Compiling lazycell v0.5.1
[INFO] [stderr]    Compiling httparse v1.2.3
[INFO] [stderr]    Compiling yansi v0.3.4
[INFO] [stderr]    Compiling scoped-tls v0.1.0
[INFO] [stderr]    Compiling slab v0.4.0
[INFO] [stderr]    Compiling openssl v0.9.23
[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/yansi-0.3.4/src/lib.rs:1:32
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![cfg_attr(feature="nightly", feature(const_atomic_bool_new))]
[INFO] [stderr]   |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]    Compiling foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling dtoa v0.4.2
[INFO] [stderr]    Compiling bitflags v0.9.1
[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 `yansi`.
[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" "d001918b2b47a67d6ee06c17600061f02da7b788a01bfa496c96017168e7854f"`
[INFO] running `"docker" "rm" "-f" "d001918b2b47a67d6ee06c17600061f02da7b788a01bfa496c96017168e7854f"`
[INFO] [stdout] d001918b2b47a67d6ee06c17600061f02da7b788a01bfa496c96017168e7854f