[INFO] cloning repository https://github.com/eoxxs/differential-aggregate-query
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/eoxxs/differential-aggregate-query" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feoxxs%2Fdifferential-aggregate-query", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feoxxs%2Fdifferential-aggregate-query'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 74676c1f142ec38772493440e085dc56af7fa005
[INFO] testing eoxxs/differential-aggregate-query against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feoxxs%2Fdifferential-aggregate-query" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/eoxxs/differential-aggregate-query on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-9/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 `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /workspace/builds/worker-9/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[INFO] the lockfile is outdated, regenerating it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 `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded abomonation_derive v0.3.0
[INFO] [stderr]   Downloaded abomonation v0.7.3
[INFO] [stderr]   Downloaded timely_sort v0.1.6
[INFO] [stderr]   Downloaded timely v0.9.0
[INFO] [stderr]   Downloaded timely_bytes v0.9.0
[INFO] [stderr]   Downloaded timely_communication v0.9.0
[INFO] [stderr]   Downloaded differential-dataflow v0.9.0
[INFO] [stderr]   Downloaded timely_logging v0.9.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 96aade9c787ae0a95a0b9c13b15c331021ab97d5c0a4bca8a87fbe7975824afa
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "96aade9c787ae0a95a0b9c13b15c331021ab97d5c0a4bca8a87fbe7975824afa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "96aade9c787ae0a95a0b9c13b15c331021ab97d5c0a4bca8a87fbe7975824afa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96aade9c787ae0a95a0b9c13b15c331021ab97d5c0a4bca8a87fbe7975824afa", kill_on_drop: false }`
[INFO] [stdout] 96aade9c787ae0a95a0b9c13b15c331021ab97d5c0a4bca8a87fbe7975824afa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] eda191fd1813abfd3ea305f4837fb9cb86a9e232d1990cd9c9278e6558ee21d2
[INFO] running `Command { std: "docker" "start" "-a" "eda191fd1813abfd3ea305f4837fb9cb86a9e232d1990cd9c9278e6558ee21d2", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling timely_bytes v0.9.0
[INFO] [stderr]    Compiling timely_logging v0.9.0
[INFO] [stderr]    Compiling abomonation v0.7.3
[INFO] [stderr]    Compiling timely_sort v0.1.6
[INFO] [stderr]    Compiling bincode v1.3.1
[INFO] [stderr]    Compiling abomonation_derive v0.3.0
[INFO] [stderr]    Compiling getopts v0.2.21
[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] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![feature(drain_filter)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AsCollection`
[INFO] [stdout]   --> src/lib.rs:19:41
[INFO] [stdout]    |
[INFO] [stdout] 19 | use differential_dataflow::collection::{AsCollection, Collection};
[INFO] [stdout]    |                                         ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Count`
[INFO] [stdout]   --> src/lib.rs:23:53
[INFO] [stdout]    |
[INFO] [stdout] 23 | use differential_dataflow::operators::{Consolidate, Count};
[INFO] [stdout]    |                                                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Neg`
[INFO] [stdout]  --> src/semiring/max_prod.rs:4:27
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ops::{AddAssign, Neg, Mul};
[INFO] [stdout]   |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Neg`
[INFO] [stdout]  --> src/semiring/sum_prod.rs:5:27
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::ops::{AddAssign, Neg, Mul};
[INFO] [stdout]   |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `timely::dataflow::operators`
[INFO] [stdout]   --> src/lib.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use timely::dataflow::operators::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `differential-aggregate-query`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "eda191fd1813abfd3ea305f4837fb9cb86a9e232d1990cd9c9278e6558ee21d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eda191fd1813abfd3ea305f4837fb9cb86a9e232d1990cd9c9278e6558ee21d2", kill_on_drop: false }`
[INFO] [stdout] eda191fd1813abfd3ea305f4837fb9cb86a9e232d1990cd9c9278e6558ee21d2