[INFO] fetching crate erdos 0.4.0...
[INFO] checking erdos-0.4.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate erdos 0.4.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate erdos 0.4.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate erdos 0.4.0
[INFO] finished tweaking crates.io crate erdos 0.4.0
[INFO] tweaked toml for crates.io crate erdos 0.4.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
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[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d33cffdc8bf6abf15c1db713ffb8f185afc3ea2ab01173e5cce8a2ad0997e081
[INFO] running `Command { std: "docker" "start" "-a" "d33cffdc8bf6abf15c1db713ffb8f185afc3ea2ab01173e5cce8a2ad0997e081", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d33cffdc8bf6abf15c1db713ffb8f185afc3ea2ab01173e5cce8a2ad0997e081", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d33cffdc8bf6abf15c1db713ffb8f185afc3ea2ab01173e5cce8a2ad0997e081", kill_on_drop: false }`
[INFO] [stdout] d33cffdc8bf6abf15c1db713ffb8f185afc3ea2ab01173e5cce8a2ad0997e081
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8a6aa3105640b6517f363ddb2991d758b45bce58b91c00ef6b7e0bbac6d68f05
[INFO] running `Command { std: "docker" "start" "-a" "8a6aa3105640b6517f363ddb2991d758b45bce58b91c00ef6b7e0bbac6d68f05", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling rustix v0.38.32
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking parking_lot_core v0.8.6
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking parking_lot v0.12.1
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[INFO] [stderr]     Checking time v0.3.34
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking abomonation v0.7.3
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking blocking v1.5.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking tokio-serde v0.3.0
[INFO] [stderr]     Checking futures-intrusive v0.4.2
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[INFO] [stderr]     Checking tracing-subscriber v0.3.18
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking tokio-serde-bincode v0.2.1
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking tracing-appender v0.2.3
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]    Compiling abomonation_derive v0.5.0
[INFO] [stderr]     Checking polling v3.6.0
[INFO] [stderr]     Checking async-io v2.3.2
[INFO] [stderr]     Checking tokio-util v0.6.10
[INFO] [stderr]     Checking async-global-executor v2.4.1
[INFO] [stderr]     Checking async-std v1.12.0
[INFO] [stderr]     Checking futures-delay-queue v0.4.2
[INFO] [stderr]     Checking erdos v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `clap` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:150:12
[INFO] [stdout]     |
[INFO] [stdout] 150 | use clap::{self, App, Arg};
[INFO] [stdout]     |            ^^^^ the item `clap` is already defined by prelude
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `tokio` is imported redundantly
[INFO] [stdout]  --> src/communication/senders.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     self,
[INFO] [stdout]   |     ^^^^ the item `tokio` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]  --> src/dataflow/context.rs:1:33
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::HashMap, iter::Iterator, marker::PhantomData, sync::Arc};
[INFO] [stdout]   |                                 ^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Iterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `tokio` is imported redundantly
[INFO] [stdout]  --> src/node/operator_executors/source_executor.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     self,
[INFO] [stdout]   |     ^^^^ the item `tokio` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `tokio` is imported redundantly
[INFO] [stdout]   --> src/node/operator_executors/mod.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     self,
[INFO] [stdout]    |     ^^^^ the item `tokio` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `box_into_pin` has been stable since 1.63.0 and no longer requires an attribute to enable
[INFO] [stdout]    --> src/lib.rs:140:12
[INFO] [stdout]     |
[INFO] [stdout] 140 | #![feature(box_into_pin)]
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `clap` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:150:12
[INFO] [stdout]     |
[INFO] [stdout] 150 | use clap::{self, App, Arg};
[INFO] [stdout]     |            ^^^^ the item `clap` is already defined by prelude
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `tokio` is imported redundantly
[INFO] [stdout]  --> src/communication/senders.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     self,
[INFO] [stdout]   |     ^^^^ the item `tokio` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]  --> src/dataflow/context.rs:1:33
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::HashMap, iter::Iterator, marker::PhantomData, sync::Arc};
[INFO] [stdout]   |                                 ^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Iterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `tokio` is imported redundantly
[INFO] [stdout]  --> src/node/operator_executors/source_executor.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     self,
[INFO] [stdout]   |     ^^^^ the item `tokio` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `tokio` is imported redundantly
[INFO] [stdout]   --> src/node/operator_executors/mod.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     self,
[INFO] [stdout]    |     ^^^^ the item `tokio` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `box_into_pin` has been stable since 1.63.0 and no longer requires an attribute to enable
[INFO] [stdout]    --> src/lib.rs:140:12
[INFO] [stdout]     |
[INFO] [stdout] 140 | #![feature(box_into_pin)]
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.51s
[INFO] running `Command { std: "docker" "inspect" "8a6aa3105640b6517f363ddb2991d758b45bce58b91c00ef6b7e0bbac6d68f05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a6aa3105640b6517f363ddb2991d758b45bce58b91c00ef6b7e0bbac6d68f05", kill_on_drop: false }`
[INFO] [stdout] 8a6aa3105640b6517f363ddb2991d758b45bce58b91c00ef6b7e0bbac6d68f05