[INFO] crate aparte 0.1.0 is already in cache
[INFO] testing aparte-0.1.0 against 1.44.0 for beta-1.45-1
[INFO] extracting crate aparte 0.1.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate aparte 0.1.0 on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate aparte 0.1.0
[INFO] finished tweaking crates.io crate aparte 0.1.0
[INFO] tweaked toml for crates.io crate aparte 0.1.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate aparte 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1.44.0" "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] 615231ddb8b8c7da359743f84a9d3efd6d7f865ab7baf9cda060aa02b4649eb2
[INFO] running `"docker" "start" "-a" "615231ddb8b8c7da359743f84a9d3efd6d7f865ab7baf9cda060aa02b4649eb2"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling syn v1.0.8
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling cc v1.0.47
[INFO] [stderr]    Compiling byte-tools v0.3.1
[INFO] [stderr]    Compiling subtle v1.0.0
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling opaque-debug v0.2.3
[INFO] [stderr]    Compiling keccak v0.1.0
[INFO] [stderr]    Compiling quick-error v1.2.2
[INFO] [stderr]    Compiling linked-hash-map v0.5.2
[INFO] [stderr]    Compiling arc-swap v0.4.3
[INFO] [stderr]    Compiling numtoa v0.1.0
[INFO] [stderr]    Compiling case v0.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling c2-chacha v0.2.3
[INFO] [stderr]    Compiling block-padding v0.1.5
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling memoffset v0.5.3
[INFO] [stderr]    Compiling num_cpus v1.11.0
[INFO] [stderr]    Compiling hostname v0.1.5
[INFO] [stderr]    Compiling socket2 v0.3.11
[INFO] [stderr]    Compiling dirs-sys v0.3.4
[INFO] [stderr]    Compiling thread-id v3.3.0
[INFO] [stderr]    Compiling rpassword v3.0.2
[INFO] [stderr]    Compiling quick-xml v0.16.1
[INFO] [stderr]    Compiling termion v1.5.3
[INFO] [stderr]    Compiling unicode-normalization v0.1.9
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling lru-cache v0.1.2
[INFO] [stderr]    Compiling resolv-conf v0.6.2
[INFO] [stderr]    Compiling signal-hook-registry v1.1.1
[INFO] [stderr]    Compiling simple-logging v2.0.2
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling mio-uds v0.6.7
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling enum-as-inner v0.2.1
[INFO] [stderr]    Compiling minidom v0.11.1
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling tokio-io v0.1.12
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling jid v0.7.2
[INFO] [stderr]    Compiling jid v0.8.0
[INFO] [stderr]    Compiling rand v0.7.2
[INFO] [stderr]    Compiling idna v0.2.0
[INFO] [stderr]    Compiling crossbeam-deque v0.7.2
[INFO] [stderr]    Compiling tokio-reactor v0.1.10
[INFO] [stderr]    Compiling tokio-codec v0.1.1
[INFO] [stderr]    Compiling tokio-threadpool v0.1.16
[INFO] [stderr]    Compiling generic-array v0.12.3
[INFO] [stderr]    Compiling tokio-udp v0.1.5
[INFO] [stderr]    Compiling tokio-tcp v0.1.3
[INFO] [stderr]    Compiling tokio-uds v0.2.5
[INFO] [stderr]    Compiling signal-hook v0.1.11
[INFO] [stderr]    Compiling tokio-file-unix v0.5.1
[INFO] [stderr]    Compiling derive-error v0.0.4
[INFO] [stderr]    Compiling openssl-sys v0.9.52
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling url v2.1.0
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]    Compiling crypto-mac v0.7.0
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling chrono v0.4.9
[INFO] [stderr]    Compiling tokio-fs v0.1.6
[INFO] [stderr]    Compiling blake2 v0.8.1
[INFO] [stderr]    Compiling hmac v0.7.1
[INFO] [stderr]    Compiling pbkdf2 v0.3.0
[INFO] [stderr]    Compiling sha-1 v0.8.1
[INFO] [stderr]    Compiling sha2 v0.8.0
[INFO] [stderr]    Compiling sha3 v0.8.2
[INFO] [stderr]    Compiling tokio v0.1.22
[INFO] [stderr]    Compiling openssl v0.10.25
[INFO] [stderr]    Compiling native-tls v0.2.3
[INFO] [stderr]    Compiling sasl v0.4.3
[INFO] [stderr]    Compiling backtrace v0.3.40
[INFO] [stderr]    Compiling xmpp-parsers v0.15.0
[INFO] [stderr]    Compiling xmpp-parsers v0.16.0
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling serde_derive v1.0.102
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling tokio-tls v0.2.1
[INFO] [stderr]    Compiling failure v0.1.6
[INFO] [stderr]    Compiling trust-dns-proto v0.8.0
[INFO] [stderr]    Compiling trust-dns-resolver v0.12.0
[INFO] [stderr]    Compiling serde v1.0.102
[INFO] [stderr]    Compiling serde_json v1.0.41
[INFO] [stderr]    Compiling string_cache v0.7.5
[INFO] [stderr]    Compiling toml v0.5.5
[INFO] [stderr]    Compiling markup5ever v0.9.0
[INFO] [stderr]    Compiling xml5ever v0.15.0
[INFO] [stderr]    Compiling tokio-xmpp v1.0.1
[INFO] [stderr]    Compiling aparte v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(drain_filter)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/main.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(trait_alias)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/main.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![feature(specialization)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `aparte`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "615231ddb8b8c7da359743f84a9d3efd6d7f865ab7baf9cda060aa02b4649eb2"`
[INFO] running `"docker" "rm" "-f" "615231ddb8b8c7da359743f84a9d3efd6d7f865ab7baf9cda060aa02b4649eb2"`
[INFO] [stdout] 615231ddb8b8c7da359743f84a9d3efd6d7f865ab7baf9cda060aa02b4649eb2