[INFO] fetching crate differential-dataflow 0.11.0...
[INFO] checking differential-dataflow-0.11.0 against master#0d37dca25a51fb900a402c94c8818ad1c2789e30 for pr-77526
[INFO] extracting crate differential-dataflow 0.11.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate differential-dataflow 0.11.0 on toolchain 0d37dca25a51fb900a402c94c8818ad1c2789e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate differential-dataflow 0.11.0
[INFO] finished tweaking crates.io crate differential-dataflow 0.11.0
[INFO] tweaked toml for crates.io crate differential-dataflow 0.11.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate differential-dataflow 0.11.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1d5c6b5ac4eb837e0b841b6ab76fbec69d91dcb74720788edd3c7894b95f425a
[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" "1d5c6b5ac4eb837e0b841b6ab76fbec69d91dcb74720788edd3c7894b95f425a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d5c6b5ac4eb837e0b841b6ab76fbec69d91dcb74720788edd3c7894b95f425a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d5c6b5ac4eb837e0b841b6ab76fbec69d91dcb74720788edd3c7894b95f425a", kill_on_drop: false }`
[INFO] [stdout] 1d5c6b5ac4eb837e0b841b6ab76fbec69d91dcb74720788edd3c7894b95f425a
[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=forbid" "-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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca2ba521da5158d765b0e7242c11fad317bbf2ead0bf92de9d03b5d6ffb102e2
[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" "ca2ba521da5158d765b0e7242c11fad317bbf2ead0bf92de9d03b5d6ffb102e2", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.7
[INFO] [stderr]    Compiling serde v1.0.102
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]     Checking timely_bytes v0.11.0
[INFO] [stderr]     Checking timely_logging v0.11.1
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]     Checking abomonation v0.7.3
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking timely_sort v0.1.6
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]    Compiling indexmap v1.3.0
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking memmap v0.5.2
[INFO] [stderr]     Checking graph_map v0.1.0
[INFO] [stderr]     Checking serde_json v1.0.41
[INFO] [stderr]    Compiling synstructure v0.12.1
[INFO] [stderr]    Compiling abomonation_derive v0.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.102
[INFO] [stderr]     Checking timely_communication v0.11.1
[INFO] [stderr]     Checking timely v0.11.1
[INFO] [stderr]     Checking differential-dataflow v0.11.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stdout]    --> src/operators/arrange/arrangement.rs:397:19
[INFO] [stdout]     |
[INFO] [stdout] 397 |                 ].into_iter().cloned().filter_map(|t| t).min();
[INFO] [stdout]     |                   ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stdout]    --> src/operators/arrange/arrangement.rs:397:19
[INFO] [stdout]     |
[INFO] [stdout] 397 |                 ].into_iter().cloned().filter_map(|t| t).min();
[INFO] [stdout]     |                   ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `differential_dataflow::operators::Count`
[INFO] [stdout]  --> examples/hello.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use differential_dataflow::operators::Count;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 54.52s
[INFO] running `Command { std: "docker" "inspect" "ca2ba521da5158d765b0e7242c11fad317bbf2ead0bf92de9d03b5d6ffb102e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca2ba521da5158d765b0e7242c11fad317bbf2ead0bf92de9d03b5d6ffb102e2", kill_on_drop: false }`
[INFO] [stdout] ca2ba521da5158d765b0e7242c11fad317bbf2ead0bf92de9d03b5d6ffb102e2