[INFO] updating cached repository https://github.com/eoxxs/differential-aggregate-query
[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] 74676c1f142ec38772493440e085dc56af7fa005
[INFO] testing eoxxs/differential-aggregate-query against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feoxxs%2Fdifferential-aggregate-query" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/eoxxs/differential-aggregate-query on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/eoxxs/differential-aggregate-query
[INFO] finished tweaking git repo https://github.com/eoxxs/differential-aggregate-query
[INFO] tweaked toml for git repo https://github.com/eoxxs/differential-aggregate-query written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/eoxxs/differential-aggregate-query 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] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /workspace/builds/worker-6/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] b956ce88b430a95baac31f41d2366c9ec6913f7deaa0c3bbc5594314cc87ebf3
[INFO] running `"docker" "start" "-a" "b956ce88b430a95baac31f41d2366c9ec6913f7deaa0c3bbc5594314cc87ebf3"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling serde v1.0.111
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling syn v1.0.30
[INFO] [stderr]    Compiling abomonation v0.7.3
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling timely_bytes v0.9.0
[INFO] [stderr]    Compiling timely_logging v0.9.0
[INFO] [stderr]    Compiling timely_sort v0.1.6
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]    Compiling abomonation_derive v0.3.0
[INFO] [stderr]    Compiling serde_derive v1.0.111
[INFO] [stderr]    Compiling bincode v1.2.1
[INFO] [stderr]    Compiling serde_json v1.0.53
[INFO] [stderr]    Compiling timely_communication v0.9.0
[INFO] [stderr]    Compiling timely v0.9.0
[INFO] [stderr]    Compiling differential-dataflow v0.9.0
[INFO] [stderr]    Compiling differential-aggregate-query v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]   --> src/lib.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | #![feature(drain_filter)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `AsCollection`
[INFO] [stderr]   --> src/lib.rs:19:41
[INFO] [stderr]    |
[INFO] [stderr] 19 | use differential_dataflow::collection::{AsCollection, Collection};
[INFO] [stderr]    |                                         ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Count`
[INFO] [stderr]   --> src/lib.rs:23:53
[INFO] [stderr]    |
[INFO] [stderr] 23 | use differential_dataflow::operators::{Consolidate, Count};
[INFO] [stderr]    |                                                     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Neg`
[INFO] [stderr]  --> src/semiring/max_prod.rs:4:27
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::ops::{AddAssign, Neg, Mul};
[INFO] [stderr]   |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Neg`
[INFO] [stderr]  --> src/semiring/sum_prod.rs:5:27
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::ops::{AddAssign, Neg, Mul};
[INFO] [stderr]   |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `timely::dataflow::operators`
[INFO] [stderr]   --> src/lib.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | use timely::dataflow::operators::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error; 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `differential-aggregate-query`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "b956ce88b430a95baac31f41d2366c9ec6913f7deaa0c3bbc5594314cc87ebf3"`
[INFO] running `"docker" "rm" "-f" "b956ce88b430a95baac31f41d2366c9ec6913f7deaa0c3bbc5594314cc87ebf3"`
[INFO] [stdout] b956ce88b430a95baac31f41d2366c9ec6913f7deaa0c3bbc5594314cc87ebf3