[INFO] fetching crate see-you-later 0.1.0...
[INFO] checking see-you-later-0.1.0 against master#0599f3403366d9c57f0625e6de3af214b5042a90 for pr-87710
[INFO] extracting crate see-you-later 0.1.0 into /workspace/builds/worker-81/source
[INFO] validating manifest of crates.io crate see-you-later 0.1.0 on toolchain 0599f3403366d9c57f0625e6de3af214b5042a90
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate see-you-later 0.1.0
[INFO] finished tweaking crates.io crate see-you-later 0.1.0
[INFO] tweaked toml for crates.io crate see-you-later 0.1.0 written to /workspace/builds/worker-81/source/Cargo.toml
[INFO] crate crates.io crate see-you-later 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5ea02b76f59e8250bce47ee07661a482b2a9e30f568f42d6a71d1a3ed5a40b25
[INFO] running `Command { std: "docker" "start" "-a" "5ea02b76f59e8250bce47ee07661a482b2a9e30f568f42d6a71d1a3ed5a40b25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5ea02b76f59e8250bce47ee07661a482b2a9e30f568f42d6a71d1a3ed5a40b25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ea02b76f59e8250bce47ee07661a482b2a9e30f568f42d6a71d1a3ed5a40b25", kill_on_drop: false }`
[INFO] [stdout] 5ea02b76f59e8250bce47ee07661a482b2a9e30f568f42d6a71d1a3ed5a40b25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3f59ae93fa25541796035495a4e231baab05206ab52c76845152fa17d6e7017a
[INFO] running `Command { std: "docker" "start" "-a" "3f59ae93fa25541796035495a4e231baab05206ab52c76845152fa17d6e7017a", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.12
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling proc-macro-nested v0.1.4
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking futures-sink v0.3.4
[INFO] [stderr]    Compiling proc-macro-hack v0.5.15
[INFO] [stderr]     Checking futures-core v0.3.4
[INFO] [stderr]     Checking futures-task v0.3.4
[INFO] [stderr]     Checking futures-io v0.3.4
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]     Checking futures-timer v3.0.2
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking async-task v3.0.0
[INFO] [stderr]     Checking scoped-tls-hkt v0.1.2
[INFO] [stderr]     Checking pin-project-lite v0.1.4
[INFO] [stderr]     Checking once_cell v1.3.1
[INFO] [stderr]     Checking futures-channel v0.3.4
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]     Checking crossbeam-channel v0.4.2
[INFO] [stderr]     Checking crossbeam-queue v0.2.1
[INFO] [stderr]     Checking socket2 v0.3.12
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]    Compiling smol-potat v0.2.1
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]     Checking futures-executor v0.3.4
[INFO] [stderr]     Checking futures v0.3.4
[INFO] [stderr]     Checking piper v0.1.1
[INFO] [stderr]     Checking see-you-later v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/every.rs:35:1
[INFO] [stdout]    |
[INFO] [stdout] 35 | / pin_project! {
[INFO] [stdout] 36 | |     /// A Future that represent a scheduled periodic task
[INFO] [stdout] 37 | |     pub struct ScheduledTask<C: Fn() -> T, T: Future<Output = ()>> {
[INFO] [stdout] 38 | |         waker: CancelWaker,
[INFO] [stdout] ...  |
[INFO] [stdout] 43 | |     }
[INFO] [stdout] 44 | | }
[INFO] [stdout]    | |_^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `$crate::pin_project` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/every.rs:35:1
[INFO] [stdout]    |
[INFO] [stdout] 35 | / pin_project! {
[INFO] [stdout] 36 | |     /// A Future that represent a scheduled periodic task
[INFO] [stdout] 37 | |     pub struct ScheduledTask<C: Fn() -> T, T: Future<Output = ()>> {
[INFO] [stdout] 38 | |         waker: CancelWaker,
[INFO] [stdout] ...  |
[INFO] [stdout] 43 | |     }
[INFO] [stdout] 44 | | }
[INFO] [stdout]    | |_^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `$crate::pin_project` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/once.rs:32:1
[INFO] [stdout]    |
[INFO] [stdout] 32 | / pin_project! {
[INFO] [stdout] 33 | |     /// A Future that represent a delayed task
[INFO] [stdout] 34 | |     pub struct DelayedTask<T: Future<Output = ()>> {
[INFO] [stdout] 35 | |         waker: CancelWaker,
[INFO] [stdout] ...  |
[INFO] [stdout] 40 | |     }
[INFO] [stdout] 41 | | }
[INFO] [stdout]    | |_^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `$crate::pin_project` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking smol v0.1.4
[INFO] [stderr]     Checking wait-for-me v0.1.2
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/every.rs:35:1
[INFO] [stdout]    |
[INFO] [stdout] 35 | / pin_project! {
[INFO] [stdout] 36 | |     /// A Future that represent a scheduled periodic task
[INFO] [stdout] 37 | |     pub struct ScheduledTask<C: Fn() -> T, T: Future<Output = ()>> {
[INFO] [stdout] 38 | |         waker: CancelWaker,
[INFO] [stdout] ...  |
[INFO] [stdout] 43 | |     }
[INFO] [stdout] 44 | | }
[INFO] [stdout]    | |_^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `$crate::pin_project` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/every.rs:35:1
[INFO] [stdout]    |
[INFO] [stdout] 35 | / pin_project! {
[INFO] [stdout] 36 | |     /// A Future that represent a scheduled periodic task
[INFO] [stdout] 37 | |     pub struct ScheduledTask<C: Fn() -> T, T: Future<Output = ()>> {
[INFO] [stdout] 38 | |         waker: CancelWaker,
[INFO] [stdout] ...  |
[INFO] [stdout] 43 | |     }
[INFO] [stdout] 44 | | }
[INFO] [stdout]    | |_^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `$crate::pin_project` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/once.rs:32:1
[INFO] [stdout]    |
[INFO] [stdout] 32 | / pin_project! {
[INFO] [stdout] 33 | |     /// A Future that represent a delayed task
[INFO] [stdout] 34 | |     pub struct DelayedTask<T: Future<Output = ()>> {
[INFO] [stdout] 35 | |         waker: CancelWaker,
[INFO] [stdout] ...  |
[INFO] [stdout] 40 | |     }
[INFO] [stdout] 41 | | }
[INFO] [stdout]    | |_^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `$crate::pin_project` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.36s
[INFO] running `Command { std: "docker" "inspect" "3f59ae93fa25541796035495a4e231baab05206ab52c76845152fa17d6e7017a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f59ae93fa25541796035495a4e231baab05206ab52c76845152fa17d6e7017a", kill_on_drop: false }`
[INFO] [stdout] 3f59ae93fa25541796035495a4e231baab05206ab52c76845152fa17d6e7017a