[INFO] cloning repository https://github.com/eholk/async-iteration-scratch
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/eholk/async-iteration-scratch" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feholk%2Fasync-iteration-scratch", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feholk%2Fasync-iteration-scratch'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ba3c11d26c6410ad198617a9a600088fc4b7d38b
[INFO] checking eholk/async-iteration-scratch against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feholk%2Fasync-iteration-scratch" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/eholk/async-iteration-scratch on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-1-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/eholk/async-iteration-scratch
[INFO] finished tweaking git repo https://github.com/eholk/async-iteration-scratch
[INFO] tweaked toml for git repo https://github.com/eholk/async-iteration-scratch written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/eholk/async-iteration-scratch 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 56e114ff65cb0dbf8c62bff0620bf89718e935978ef000c5e50af56a247d7e24
[INFO] running `Command { std: "docker" "start" "-a" "56e114ff65cb0dbf8c62bff0620bf89718e935978ef000c5e50af56a247d7e24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "56e114ff65cb0dbf8c62bff0620bf89718e935978ef000c5e50af56a247d7e24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56e114ff65cb0dbf8c62bff0620bf89718e935978ef000c5e50af56a247d7e24", kill_on_drop: false }`
[INFO] [stdout] 56e114ff65cb0dbf8c62bff0620bf89718e935978ef000c5e50af56a247d7e24
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8b9e243612f9d421ae553f705c85e9deb86080f7c6fa07324ef04c73e8d0ef75
[INFO] running `Command { std: "docker" "start" "-a" "8b9e243612f9d421ae553f705c85e9deb86080f7c6fa07324ef04c73e8d0ef75", kill_on_drop: false }`
[INFO] [stderr]     Checking async-iteration-scratch v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `JoinRoot` and `JoinWith`
[INFO] [stdout]   --> src/future_combinators/mod.rs:10:34
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub use join::{join, JoinFuture, JoinRoot, JoinWith};
[INFO] [stdout]    |                                  ^^^^^^^^  ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `JoinRoot` and `JoinWith`
[INFO] [stdout]   --> src/future_combinators/mod.rs:10:34
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub use join::{join, JoinFuture, JoinRoot, JoinWith};
[INFO] [stdout]    |                                  ^^^^^^^^  ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `block_on` is never used
[INFO] [stdout]   --> src/lib.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn block_on<F: IntoFuture>(f: F) -> F::Output {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `for_each` is never used
[INFO] [stdout]   --> src/afit/mod.rs:12:14
[INFO] [stdout]    |
[INFO] [stdout] 7  | pub trait AsyncIterator {
[INFO] [stdout]    |           ------------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 12 |     async fn for_each(mut self, mut f: impl async FnMut(Self::Item))
[INFO] [stdout]    |              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `PinnedAsyncIterator` is never used
[INFO] [stdout]   --> src/afit/mod.rs:22:11
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub trait PinnedAsyncIterator {
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `async_iter_from_iter` is never used
[INFO] [stdout]   --> src/afit/mod.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn async_iter_from_iter<I: Iterator>(iter: I) -> impl AsyncIterator<Item = I::Item> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `map` is never used
[INFO] [stdout]  --> src/afit/map.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn map<Iter: AsyncIterator, F: async Fn(Iter::Item) -> U, U>(
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AsyncIteratorExt` is never used
[INFO] [stdout]  --> src/poll/mod.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub trait AsyncIteratorExt: AsyncIterator {
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `merge` is never used
[INFO] [stdout]   --> src/poll/merge.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn merge<A, B>(a: A, b: B) -> Merge<A, B>
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `for_each` is never used
[INFO] [stdout]   --> src/push/mod.rs:15:14
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub trait Stream {
[INFO] [stdout]    |           ------ method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 15 |     async fn for_each(self, mut f: impl async FnMut(Self::Item))
[INFO] [stdout]    |              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `from_async_iter` is never used
[INFO] [stdout]   --> src/push/mod.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn from_async_iter<I: AsyncIterator>(iter: I) -> impl Stream<Item = I::Item> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `from_iter` is never used
[INFO] [stdout]   --> src/push/mod.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | pub fn from_iter<I>(iter: I) -> impl Stream<Item = I::Item>
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `filter` is never used
[INFO] [stdout]   --> src/push/filter.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn filter<S, F>(stream: S, predicate: F) -> Filter<S, F>
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/push/merge.rs:91:12
[INFO] [stdout]    |
[INFO] [stdout] 86 | / impl<A, B> Merge<A, B>
[INFO] [stdout] 87 | | where
[INFO] [stdout] 88 | |     A: Stream,
[INFO] [stdout] 89 | |     B: Stream,
[INFO] [stdout]    | |______________- associated function in this implementation
[INFO] [stdout] 90 |   {
[INFO] [stdout] 91 |       pub fn new(a: A, b: B) -> Self {
[INFO] [stdout]    |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `PinnedAsyncIterator` is never used
[INFO] [stdout]   --> src/afit/mod.rs:22:11
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub trait PinnedAsyncIterator {
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AsyncIteratorExt` is never used
[INFO] [stdout]  --> src/poll/mod.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub trait AsyncIteratorExt: AsyncIterator {
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `from_async_iter` is never used
[INFO] [stdout]   --> src/push/mod.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn from_async_iter<I: AsyncIterator>(iter: I) -> impl Stream<Item = I::Item> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "8b9e243612f9d421ae553f705c85e9deb86080f7c6fa07324ef04c73e8d0ef75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b9e243612f9d421ae553f705c85e9deb86080f7c6fa07324ef04c73e8d0ef75", kill_on_drop: false }`
[INFO] [stdout] 8b9e243612f9d421ae553f705c85e9deb86080f7c6fa07324ef04c73e8d0ef75