[INFO] crate time-tweet 0.1.9 is already in cache
[INFO] testing time-tweet-0.1.9 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate time-tweet 0.1.9 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate time-tweet 0.1.9 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 crates.io crate time-tweet 0.1.9
[INFO] finished tweaking crates.io crate time-tweet 0.1.9
[INFO] tweaked toml for crates.io crate time-tweet 0.1.9 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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-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=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] 14f6c2663d2aa215f14f804a3fa970d35196b9bd036f5ea88fd69bbb9e34c4c5
[INFO] running `"docker" "start" "-a" "14f6c2663d2aa215f14f804a3fa970d35196b9bd036f5ea88fd69bbb9e34c4c5"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling openssl v0.9.24
[INFO] [stderr]    Compiling scoped-tls v0.1.2
[INFO] [stderr]    Compiling bitflags v0.9.1
[INFO] [stderr]    Compiling smallvec v0.2.1
[INFO] [stderr]    Compiling take v0.1.0
[INFO] [stderr]    Compiling try-lock v0.1.0
[INFO] [stderr]    Compiling slab v0.3.0
[INFO] [stderr]    Compiling constant_time_eq v0.1.5
[INFO] [stderr]    Compiling language-tags v0.2.2
[INFO] [stderr]    Compiling arrayref v0.3.6
[INFO] [stderr]    Compiling byte-tools v0.2.0
[INFO] [stderr]    Compiling utf8-ranges v0.1.3
[INFO] [stderr]    Compiling regex-syntax v0.3.9
[INFO] [stderr]    Compiling nom v2.1.0
[INFO] [stderr]    Compiling iter-merge-sort v0.1.2
[INFO] [stderr]    Compiling tokio-service v0.1.0
[INFO] [stderr]    Compiling relay v0.1.1
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling lock_api v0.3.4
[INFO] [stderr]    Compiling openssl-sys v0.9.58
[INFO] [stderr]    Compiling tokio-sync v0.1.8
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling want v0.0.4
[INFO] [stderr]    Compiling generic-array v0.8.3
[INFO] [stderr]    Compiling base64 v0.9.3
[INFO] [stderr]    Compiling futures-cpupool v0.1.8
[INFO] [stderr]    Compiling block-buffer v0.3.3
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]    Compiling error-chain v0.11.0
[INFO] [stderr]    Compiling mio v0.6.22
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling tokio-io v0.1.13
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling digest v0.6.2
[INFO] [stderr]    Compiling crypto-mac v0.4.0
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling tokio-threadpool v0.1.18
[INFO] [stderr]    Compiling sha-1 v0.4.1
[INFO] [stderr]    Compiling hmac v0.4.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling tokio-codec v0.1.2
[INFO] [stderr]    Compiling url v1.7.2
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling tokio-reactor v0.1.12
[INFO] [stderr]    Compiling cron-bugfix-version v0.4.0
[INFO] [stderr]    Compiling tokio-fs v0.1.7
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr] error[E0432]: unresolved import `std::collections::range`
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cron-bugfix-version-0.4.0/src/time_unit/mod.rs:18:23
[INFO] [stderr]    |
[INFO] [stderr] 18 | use std::collections::range::{RangeArgument};
[INFO] [stderr]    |                       ^^^^^ could not find `range` in `collections`
[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/cron-bugfix-version-0.4.0/src/lib.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![feature(collections_range)]
[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/cron-bugfix-version-0.4.0/src/lib.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![feature(conservative_impl_trait)]
[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/cron-bugfix-version-0.4.0/src/lib.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | #![feature(iterator_step_by)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0432, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0432`.
[INFO] [stderr] error: could not compile `cron-bugfix-version`.
[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" "14f6c2663d2aa215f14f804a3fa970d35196b9bd036f5ea88fd69bbb9e34c4c5"`
[INFO] running `"docker" "rm" "-f" "14f6c2663d2aa215f14f804a3fa970d35196b9bd036f5ea88fd69bbb9e34c4c5"`
[INFO] [stdout] 14f6c2663d2aa215f14f804a3fa970d35196b9bd036f5ea88fd69bbb9e34c4c5