[INFO] cloning repository https://github.com/whatisaphone/genawaiter [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/whatisaphone/genawaiter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwhatisaphone%2Fgenawaiter", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwhatisaphone%2Fgenawaiter'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 45c10c223b92da215e182bc3eff0d5e09bf813f4 [INFO] checking whatisaphone/genawaiter against master#b56aaec52bc0fa35591a872fb4aac81f606e265c for pr-122661-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwhatisaphone%2Fgenawaiter" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/whatisaphone/genawaiter [INFO] finished tweaking git repo https://github.com/whatisaphone/genawaiter [INFO] tweaked toml for git repo https://github.com/whatisaphone/genawaiter written to /workspace/builds/worker-7-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/whatisaphone/genawaiter on toolchain b56aaec52bc0fa35591a872fb4aac81f606e265c [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/whatisaphone/genawaiter 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" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded trybuild v1.0.23 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 8428860559a96bb05c0b376aff4180361957f56c8f8efc69337075cc7c56d463 [INFO] running `Command { std: "docker" "start" "-a" "8428860559a96bb05c0b376aff4180361957f56c8f8efc69337075cc7c56d463", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "8428860559a96bb05c0b376aff4180361957f56c8f8efc69337075cc7c56d463", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8428860559a96bb05c0b376aff4180361957f56c8f8efc69337075cc7c56d463", kill_on_drop: false }` [INFO] [stdout] 8428860559a96bb05c0b376aff4180361957f56c8f8efc69337075cc7c56d463 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 1b717ea022fbf362985accf68e32da54f0654442d596ff90e5de692555f9294e [INFO] running `Command { std: "docker" "start" "-a" "1b717ea022fbf362985accf68e32da54f0654442d596ff90e5de692555f9294e", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.6 [INFO] [stderr] Compiling syn v1.0.8 [INFO] [stderr] Compiling unicode-xid v0.2.0 [INFO] [stderr] Compiling rustversion v1.0.2 [INFO] [stderr] Compiling memchr v2.2.1 [INFO] [stderr] Compiling proc-macro-nested v0.1.3 [INFO] [stderr] Compiling serde v1.0.104 [INFO] [stderr] Checking futures-sink v0.3.1 [INFO] [stderr] Compiling ryu v1.0.2 [INFO] [stderr] Checking futures-core v0.3.1 [INFO] [stderr] Checking futures-io v0.3.1 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Checking futures-task v0.3.1 [INFO] [stderr] Checking pin-utils v0.1.0-alpha.4 [INFO] [stderr] Checking itoa v0.4.5 [INFO] [stderr] Checking genawaiter-macro v0.99.1 (/opt/rustwide/workdir/genawaiter-macro) [INFO] [stderr] Checking termcolor v1.1.0 [INFO] [stderr] Checking glob v0.3.0 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Checking once_cell v1.3.1 [INFO] [stderr] Checking futures-channel v0.3.1 [INFO] [stderr] Checking quote v1.0.2 [INFO] [stderr] Compiling syn-mid v0.4.0 [INFO] [stderr] Compiling proc-macro-hack v0.5.11 [INFO] [stderr] Compiling serde_derive v1.0.104 [INFO] [stderr] Compiling proc-macro-error v0.4.4 [INFO] [stderr] Compiling proc-macro-error-attr v0.4.3 [INFO] [stderr] Compiling futures-macro v0.3.1 [INFO] [stderr] Checking genawaiter-proc-macro v0.99.1 (/opt/rustwide/workdir/genawaiter-proc-macro) [INFO] [stdout] warning: unused extern crate [INFO] [stdout] --> genawaiter-proc-macro/src/lib.rs:5:1 [INFO] [stdout] | [INFO] [stdout] 5 | extern crate proc_macro; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ unused [INFO] [stdout] | [INFO] [stdout] note: the lint level is defined here [INFO] [stdout] --> genawaiter-proc-macro/src/lib.rs:1:73 [INFO] [stdout] | [INFO] [stdout] 1 | #![warn(future_incompatible, rust_2018_compatibility, rust_2018_idioms, unused)] [INFO] [stdout] | ^^^^^^ [INFO] [stdout] = note: `#[warn(unused_extern_crates)]` implied by `#[warn(unused)]` [INFO] [stdout] help: remove the unused `extern crate` [INFO] [stdout] | [INFO] [stdout] 5 - extern crate proc_macro; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused extern crate [INFO] [stdout] --> genawaiter-proc-macro/src/lib.rs:5:1 [INFO] [stdout] | [INFO] [stdout] 5 | extern crate proc_macro; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ unused [INFO] [stdout] | [INFO] [stdout] note: the lint level is defined here [INFO] [stdout] --> genawaiter-proc-macro/src/lib.rs:1:73 [INFO] [stdout] | [INFO] [stdout] 1 | #![warn(future_incompatible, rust_2018_compatibility, rust_2018_idioms, unused)] [INFO] [stdout] | ^^^^^^ [INFO] [stdout] = note: `#[warn(unused_extern_crates)]` implied by `#[warn(unused)]` [INFO] [stdout] help: remove the unused `extern crate` [INFO] [stdout] | [INFO] [stdout] 5 - extern crate proc_macro; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused extern crate [INFO] [stdout] --> genawaiter-proc-macro/src/lib.rs:5:1 [INFO] [stdout] | [INFO] [stdout] 5 | extern crate proc_macro; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ unused [INFO] [stdout] | [INFO] [stdout] note: the lint level is defined here [INFO] [stdout] --> genawaiter-proc-macro/src/lib.rs:1:73 [INFO] [stdout] | [INFO] [stdout] 1 | #![warn(future_incompatible, rust_2018_compatibility, rust_2018_idioms, unused)] [INFO] [stdout] | ^^^^^^ [INFO] [stdout] = note: `#[warn(unused_extern_crates)]` implied by `#[warn(unused)]` [INFO] [stdout] help: remove the unused `extern crate` [INFO] [stdout] | [INFO] [stdout] 5 - extern crate proc_macro; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking futures-util v0.3.1 [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:260:73 [INFO] [stdout] | [INFO] [stdout] 260 | #![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:37:5 [INFO] [stdout] | [INFO] [stdout] 37 | #[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: trait `MaybeUninitExt` is never used [INFO] [stdout] --> src/ext.rs:5:11 [INFO] [stdout] | [INFO] [stdout] 5 | pub trait MaybeUninitExt { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` implied by `#[warn(unused)]` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking futures-executor v0.3.1 [INFO] [stderr] Checking futures v0.3.1 [INFO] [stderr] Checking toml v0.5.6 [INFO] [stderr] Checking serde_json v1.0.48 [INFO] [stderr] Checking trybuild v1.0.23 [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:260:73 [INFO] [stdout] | [INFO] [stdout] 260 | #![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:37:5 [INFO] [stdout] | [INFO] [stdout] 37 | #[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: trait `MaybeUninitExt` is never used [INFO] [stdout] --> src/ext.rs:5:11 [INFO] [stdout] | [INFO] [stdout] 5 | pub trait MaybeUninitExt { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` implied by `#[warn(unused)]` [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 15.16s [INFO] running `Command { std: "docker" "inspect" "1b717ea022fbf362985accf68e32da54f0654442d596ff90e5de692555f9294e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1b717ea022fbf362985accf68e32da54f0654442d596ff90e5de692555f9294e", kill_on_drop: false }` [INFO] [stdout] 1b717ea022fbf362985accf68e32da54f0654442d596ff90e5de692555f9294e