[INFO] fetching crate unsend 0.2.1...
[INFO] checking unsend-0.2.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate unsend 0.2.1 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate unsend 0.2.1 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 unsend 0.2.1
[INFO] finished tweaking crates.io crate unsend 0.2.1
[INFO] tweaked toml for crates.io crate unsend 0.2.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate unsend 0.2.1 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]  Downloading crates ...
[INFO] [stderr]   Downloaded rustix v0.37.15
[INFO] [stderr]   Downloaded libc v0.2.142
[INFO] [stderr]   Downloaded linux-raw-sys v0.3.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 7d1be7b087bc9f064622004ea0e23210acc63decd5b83b65902b3b942c44458b
[INFO] running `Command { std: "docker" "start" "-a" "7d1be7b087bc9f064622004ea0e23210acc63decd5b83b65902b3b942c44458b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7d1be7b087bc9f064622004ea0e23210acc63decd5b83b65902b3b942c44458b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d1be7b087bc9f064622004ea0e23210acc63decd5b83b65902b3b942c44458b", kill_on_drop: false }`
[INFO] [stdout] 7d1be7b087bc9f064622004ea0e23210acc63decd5b83b65902b3b942c44458b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 0fc263d1570826b2db66cde40e625ee8a094c81751aba04b7e217fa89b1960d5
[INFO] running `Command { std: "docker" "start" "-a" "0fc263d1570826b2db66cde40e625ee8a094c81751aba04b7e217fa89b1960d5", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]    Compiling libc v0.2.142
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]     Checking parking v2.1.0
[INFO] [stderr]     Checking futures-io v0.3.28
[INFO] [stderr]    Compiling io-lifetimes v1.0.10
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]    Compiling polling v2.8.0
[INFO] [stderr]    Compiling rustix v0.37.15
[INFO] [stderr]     Checking futures-lite v1.13.0
[INFO] [stderr]     Checking async-lock v2.7.0
[INFO] [stderr]    Compiling async-io v1.13.0
[INFO] [stderr]     Checking concurrent-queue v2.2.0
[INFO] [stderr]     Checking linux-raw-sys v0.3.4
[INFO] [stderr]     Checking atomic-waker v1.1.1
[INFO] [stderr]     Checking async-task v4.4.0
[INFO] [stderr]     Checking async-channel v1.8.0
[INFO] [stderr]     Checking blocking v1.3.1
[INFO] [stderr]     Checking unsend v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Future` is imported redundantly
[INFO] [stdout]   --> src/executor.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | use core::future::Future;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 | use futures_lite::prelude::*;
[INFO] [stdout]    |     ------------------------ the item `Future` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::sync::atomic`
[INFO] [stdout]   --> src/lib.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub use core::sync::atomic;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking socket2 v0.4.9
[INFO] [stdout] warning: the item `Future` is imported redundantly
[INFO] [stdout]   --> src/executor.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | use core::future::Future;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 | use futures_lite::prelude::*;
[INFO] [stdout]    |     ------------------------ the item `Future` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Context` is imported redundantly
[INFO] [stdout]    --> src/event.rs:635:21
[INFO] [stdout]     |
[INFO] [stdout] 630 |     use super::*;
[INFO] [stdout]     |         -------- the item `Context` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 635 |     use std::task::{Context, Wake, Waker};
[INFO] [stdout]     |                     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Waker` is imported redundantly
[INFO] [stdout]    --> src/event.rs:635:36
[INFO] [stdout]     |
[INFO] [stdout] 630 |     use super::*;
[INFO] [stdout]     |         -------- the item `Waker` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 635 |     use std::task::{Context, Wake, Waker};
[INFO] [stdout]     |                                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::sync::atomic`
[INFO] [stdout]   --> src/lib.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub use core::sync::atomic;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.76s
[INFO] running `Command { std: "docker" "inspect" "0fc263d1570826b2db66cde40e625ee8a094c81751aba04b7e217fa89b1960d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fc263d1570826b2db66cde40e625ee8a094c81751aba04b7e217fa89b1960d5", kill_on_drop: false }`
[INFO] [stdout] 0fc263d1570826b2db66cde40e625ee8a094c81751aba04b7e217fa89b1960d5