[INFO] fetching crate genawaiter 0.99.1...
[INFO] checking genawaiter-0.99.1 against try#306c6aded24f02440063be828ebe601fe5eb8323 for pr-133502-3
[INFO] extracting crate genawaiter 0.99.1 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate genawaiter 0.99.1 on toolchain 306c6aded24f02440063be828ebe601fe5eb8323
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+306c6aded24f02440063be828ebe601fe5eb8323" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate genawaiter 0.99.1
[INFO] finished tweaking crates.io crate genawaiter 0.99.1
[INFO] tweaked toml for crates.io crate genawaiter 0.99.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+306c6aded24f02440063be828ebe601fe5eb8323" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 27 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+306c6aded24f02440063be828ebe601fe5eb8323" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+306c6aded24f02440063be828ebe601fe5eb8323" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d4d30878267f41b669594ec3a5b8aeeb34830fc2d37311fcce810a93b53d26b2
[INFO] running `Command { std: "docker" "start" "-a" "d4d30878267f41b669594ec3a5b8aeeb34830fc2d37311fcce810a93b53d26b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d4d30878267f41b669594ec3a5b8aeeb34830fc2d37311fcce810a93b53d26b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4d30878267f41b669594ec3a5b8aeeb34830fc2d37311fcce810a93b53d26b2", kill_on_drop: false }`
[INFO] [stdout] d4d30878267f41b669594ec3a5b8aeeb34830fc2d37311fcce810a93b53d26b2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+306c6aded24f02440063be828ebe601fe5eb8323" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0974993d9b3ea99da6fe6b9607bf2c0e22382f0251e03742ed84e90c8021c736
[INFO] running `Command { std: "docker" "start" "-a" "0974993d9b3ea99da6fe6b9607bf2c0e22382f0251e03742ed84e90c8021c736", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.12
[INFO] [stderr]    Compiling proc-macro-error v0.4.12
[INFO] [stderr]     Checking futures-sink v0.3.31
[INFO] [stderr]    Compiling proc-macro-hack v0.5.20+deprecated
[INFO] [stderr]     Checking futures-core v0.3.31
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]     Checking futures-task v0.3.31
[INFO] [stderr]     Checking futures-io v0.3.31
[INFO] [stderr]     Checking futures-channel v0.3.31
[INFO] [stderr]     Checking genawaiter-macro v0.99.1
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]    Compiling syn-mid v0.5.4
[INFO] [stderr]     Checking futures-executor v0.3.31
[INFO] [stderr]     Checking futures v0.3.31
[INFO] [stderr]    Compiling genawaiter-proc-macro v0.99.1
[INFO] [stderr]     Checking genawaiter v0.99.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to a provided trait method
[INFO] [stdout]    --> src/ops.rs:44:5
[INFO] [stdout]     |
[INFO] [stdout] 44  |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:261:73
[INFO] [stdout]     |
[INFO] [stdout] 261 | #![warn(future_incompatible, rust_2018_compatibility, rust_2018_idioms, unused)]
[INFO] [stdout]     |                                                                         ^^^^^^
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` implied by `#[warn(unused)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to a provided trait method
[INFO] [stdout]  --> src/rc/iterator.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     #[must_use]
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to a provided trait method
[INFO] [stdout]    --> src/ops.rs:44:5
[INFO] [stdout]     |
[INFO] [stdout] 44  |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:261:73
[INFO] [stdout]     |
[INFO] [stdout] 261 | #![warn(future_incompatible, rust_2018_compatibility, rust_2018_idioms, unused)]
[INFO] [stdout]     |                                                                         ^^^^^^
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` implied by `#[warn(unused)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to a provided trait method
[INFO] [stdout]  --> src/rc/iterator.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     #[must_use]
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to a provided trait method
[INFO] [stdout]   --> src/stack/generator.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     #[must_use]
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to a provided trait method
[INFO] [stdout]  --> src/stack/iterator.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     #[must_use]
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to a provided trait method
[INFO] [stdout]  --> src/sync/iterator.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     #[must_use]
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to a provided trait method
[INFO] [stdout]   --> src/stack/generator.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     #[must_use]
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to a provided trait method
[INFO] [stdout]  --> src/stack/iterator.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     #[must_use]
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to a provided trait method
[INFO] [stdout]  --> src/sync/iterator.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     #[must_use]
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/stack/mod.rs:468:13
[INFO] [stdout]     |
[INFO] [stdout] 468 |             drop(gen);
[INFO] [stdout]     |             ^^^^^---^
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  argument has type `&mut stack::generator::Gen<'_, i32, (), {async block@src/stack/mod.rs:456:17: 456:27}>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 468 -             drop(gen);
[INFO] [stdout] 468 +             let _ = gen;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.62s
[INFO] running `Command { std: "docker" "inspect" "0974993d9b3ea99da6fe6b9607bf2c0e22382f0251e03742ed84e90c8021c736", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0974993d9b3ea99da6fe6b9607bf2c0e22382f0251e03742ed84e90c8021c736", kill_on_drop: false }`
[INFO] [stdout] 0974993d9b3ea99da6fe6b9607bf2c0e22382f0251e03742ed84e90c8021c736