[INFO] fetching crate differential-dataflow 0.12.0...
[INFO] checking differential-dataflow-0.12.0 against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] extracting crate differential-dataflow 0.12.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate differential-dataflow 0.12.0 on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate differential-dataflow 0.12.0
[INFO] finished tweaking crates.io crate differential-dataflow 0.12.0
[INFO] tweaked toml for crates.io crate differential-dataflow 0.12.0 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate differential-dataflow 0.12.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded timely_communication v0.12.0
[INFO] [stderr]   Downloaded timely v0.12.0
[INFO] [stderr]   Downloaded rdkafka-sys v2.1.0+1.5.0
[INFO] [stderr]   Downloaded graph_map v0.1.0
[INFO] [stderr]   Downloaded timely_logging v0.12.0
[INFO] [stderr]   Downloaded timely_bytes v0.12.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", 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] 7de6ea158bd8909b538f546bbc5a982ff3a1b9c1c4f7ae8e8488f6b30d7129ff
[INFO] running `Command { std: "docker" "start" "-a" "7de6ea158bd8909b538f546bbc5a982ff3a1b9c1c4f7ae8e8488f6b30d7129ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7de6ea158bd8909b538f546bbc5a982ff3a1b9c1c4f7ae8e8488f6b30d7129ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7de6ea158bd8909b538f546bbc5a982ff3a1b9c1c4f7ae8e8488f6b30d7129ff", kill_on_drop: false }`
[INFO] [stdout] 7de6ea158bd8909b538f546bbc5a982ff3a1b9c1c4f7ae8e8488f6b30d7129ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 571a66898ed9a4ea16221d6bc24c1d4ff3534f94c81e757ec739ad31d714c9ce
[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" "571a66898ed9a4ea16221d6bc24c1d4ff3534f94c81e757ec739ad31d714c9ce", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.63
[INFO] [stderr]    Compiling serde_derive v1.0.124
[INFO] [stderr]    Compiling serde v1.0.124
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]     Checking futures-sink v0.3.13
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking futures-core v0.3.13
[INFO] [stderr]     Checking futures-task v0.3.13
[INFO] [stderr]     Checking futures-io v0.3.13
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking timely_logging v0.12.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking abomonation v0.7.3
[INFO] [stderr]     Checking timely_bytes v0.12.0
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]    Compiling rdkafka-sys v2.1.0+1.5.0
[INFO] [stderr]    Compiling libz-sys v1.1.2
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]     Checking futures-channel v0.3.13
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking memmap v0.5.2
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling crossbeam-utils v0.8.3
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking graph_map v0.1.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling futures-macro v0.3.13
[INFO] [stderr]    Compiling abomonation_derive v0.5.0
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]     Checking futures-util v0.3.13
[INFO] [stderr]     Checking futures-executor v0.3.13
[INFO] [stderr]     Checking futures v0.3.13
[INFO] [stderr]     Checking timely_communication v0.12.0
[INFO] [stderr]     Checking bincode v1.3.2
[INFO] [stderr]     Checking timely v0.12.0
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]    Compiling num_enum_derive v0.5.1
[INFO] [stderr]     Checking differential-dataflow v0.12.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking num_enum v0.5.1
[INFO] [stderr]     Checking rdkafka v0.24.0
[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:411:19
[INFO] [stdout]     |
[INFO] [stdout] 411 |                 ].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: 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:411:19
[INFO] [stdout]     |
[INFO] [stdout] 411 |                 ].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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 07s
[INFO] running `Command { std: "docker" "inspect" "571a66898ed9a4ea16221d6bc24c1d4ff3534f94c81e757ec739ad31d714c9ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "571a66898ed9a4ea16221d6bc24c1d4ff3534f94c81e757ec739ad31d714c9ce", kill_on_drop: false }`
[INFO] [stdout] 571a66898ed9a4ea16221d6bc24c1d4ff3534f94c81e757ec739ad31d714c9ce