[INFO] fetching crate repeating_future 0.1.0...
[INFO] checking repeating_future-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate repeating_future 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate repeating_future 0.1.0 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 repeating_future 0.1.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate repeating_future 0.1.0
[INFO] tweaked toml for crates.io crate repeating_future 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate repeating_future 0.1.0 already has a lockfile, it will not be regenerated
[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
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] f789acb6385f4113f9a52f0e44fcfb968bcfded7c27b3a00772b29a12db93ed5
[INFO] running `Command { std: "docker" "start" "-a" "f789acb6385f4113f9a52f0e44fcfb968bcfded7c27b3a00772b29a12db93ed5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f789acb6385f4113f9a52f0e44fcfb968bcfded7c27b3a00772b29a12db93ed5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f789acb6385f4113f9a52f0e44fcfb968bcfded7c27b3a00772b29a12db93ed5", kill_on_drop: false }`
[INFO] [stdout] f789acb6385f4113f9a52f0e44fcfb968bcfded7c27b3a00772b29a12db93ed5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 579ba121b8d39366c72530c8944badff7ef82c14dde156fdb9eab45ce04028f4
[INFO] running `Command { std: "docker" "start" "-a" "579ba121b8d39366c72530c8944badff7ef82c14dde156fdb9eab45ce04028f4", kill_on_drop: false }`
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[INFO] [stderr]     Checking repeating_future v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Stream` is imported redundantly
[INFO] [stdout]  --> src/stream.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use futures::Stream;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 9 | use futures_lite::{prelude::*, ready};
[INFO] [stdout]   |                    ---------- the item `Stream` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Stream` is imported redundantly
[INFO] [stdout]  --> src/stream.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use futures::Stream;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 9 | use futures_lite::{prelude::*, ready};
[INFO] [stdout]   |                    ---------- the item `Stream` is already imported here
[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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Stream` is imported redundantly
[INFO] [stdout]  --> examples/manual.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use futures::Stream;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 9 | use futures_lite::{prelude::*, ready};
[INFO] [stdout]   |                    ---------- the item `Stream` is already imported here
[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` profile [unoptimized + debuginfo] target(s) in 16.39s
[INFO] running `Command { std: "docker" "inspect" "579ba121b8d39366c72530c8944badff7ef82c14dde156fdb9eab45ce04028f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "579ba121b8d39366c72530c8944badff7ef82c14dde156fdb9eab45ce04028f4", kill_on_drop: false }`
[INFO] [stdout] 579ba121b8d39366c72530c8944badff7ef82c14dde156fdb9eab45ce04028f4