[INFO] crate cluConstConcat 1.2.2 is already in cache
[INFO] testing cluConstConcat-1.2.2 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate cluConstConcat 1.2.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate cluConstConcat 1.2.2 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 cluConstConcat 1.2.2
[INFO] finished tweaking crates.io crate cluConstConcat 1.2.2
[INFO] tweaked toml for crates.io crate cluConstConcat 1.2.2 written to /workspace/builds/worker-2/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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 059f5936e98cd97e05cd54fd699ad17aa88cdceb2c83eae22bcfc5609166afa9
[INFO] running `"docker" "start" "-a" "059f5936e98cd97e05cd54fd699ad17aa88cdceb2c83eae22bcfc5609166afa9"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling cluConstConcat v1.2.2 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unknown lint: `unions_with_drop_fields`
[INFO] [stderr]    --> src/lib.rs:193:9
[INFO] [stderr]     |
[INFO] [stderr] 193 | #[allow(unions_with_drop_fields)]
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unknown_lints)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]    --> src/lib.rs:185:1
[INFO] [stderr]     |
[INFO] [stderr] 185 | #![feature(const_fn_union)]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]    --> src/lib.rs:186:1
[INFO] [stderr]     |
[INFO] [stderr] 186 | #![feature(untagged_unions)]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]    --> src/lib.rs:187:1
[INFO] [stderr]     |
[INFO] [stderr] 187 | #![feature(const_fn)]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]    --> src/lib.rs:188:1
[INFO] [stderr]     |
[INFO] [stderr] 188 | #![feature(const_slice_len)]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]    --> src/lib.rs:189:1
[INFO] [stderr]     |
[INFO] [stderr] 189 | #![feature(const_str_as_bytes)]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]    --> src/lib.rs:190:1
[INFO] [stderr]     |
[INFO] [stderr] 190 | #![feature(const_raw_ptr_deref)]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]    --> src/lib.rs:191:1
[INFO] [stderr]     |
[INFO] [stderr] 191 | #![feature(const_str_len)]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0740]: unions may not contain fields that need dropping
[INFO] [stderr]    --> src/lib.rs:195:2
[INFO] [stderr]     |
[INFO] [stderr] 195 |     value: Value,
[INFO] [stderr]     |     ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: `std::mem::ManuallyDrop` can be used to wrap the type
[INFO] [stderr]    --> src/lib.rs:195:2
[INFO] [stderr]     |
[INFO] [stderr] 195 |     value: Value,
[INFO] [stderr]     |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 8 previous errors; 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0554, E0740.
[INFO] [stderr] For more information about an error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `cluConstConcat`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "059f5936e98cd97e05cd54fd699ad17aa88cdceb2c83eae22bcfc5609166afa9"`
[INFO] running `"docker" "rm" "-f" "059f5936e98cd97e05cd54fd699ad17aa88cdceb2c83eae22bcfc5609166afa9"`
[INFO] [stdout] 059f5936e98cd97e05cd54fd699ad17aa88cdceb2c83eae22bcfc5609166afa9