[INFO] fetching crate safeeft 0.0.5...
[INFO] checking safeeft-0.0.5 against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] extracting crate safeeft 0.0.5 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate safeeft 0.0.5 on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate safeeft 0.0.5
[INFO] finished tweaking crates.io crate safeeft 0.0.5
[INFO] tweaked toml for crates.io crate safeeft 0.0.5 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9318d3f08b3d0c59d8c5b8714fa0c852027f26b6d1dae3db5dab53251bb1f8db
[INFO] running `Command { std: "docker" "start" "-a" "9318d3f08b3d0c59d8c5b8714fa0c852027f26b6d1dae3db5dab53251bb1f8db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9318d3f08b3d0c59d8c5b8714fa0c852027f26b6d1dae3db5dab53251bb1f8db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9318d3f08b3d0c59d8c5b8714fa0c852027f26b6d1dae3db5dab53251bb1f8db", kill_on_drop: false }`
[INFO] [stdout] 9318d3f08b3d0c59d8c5b8714fa0c852027f26b6d1dae3db5dab53251bb1f8db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9562a29aa225443355563143a87a3a50cb6feeb8ae024bbf4e9b978470ceec17
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9562a29aa225443355563143a87a3a50cb6feeb8ae024bbf4e9b978470ceec17", 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] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking float-traits v0.0.3
[INFO] [stderr]     Checking safeeft v0.0.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]   --> benches/twosum.rs:24:33
[INFO] [stdout]    |
[INFO] [stdout] 24 |     b.iter(|| for (f1, f2) in l.into_iter().zip(r.into_iter()) {
[INFO] [stdout]    |                                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 24 |     b.iter(|| for (f1, f2) in l.iter().zip(r.into_iter()) {
[INFO] [stdout]    |                                 ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 24 |     b.iter(|| for (f1, f2) in IntoIterator::into_iter(l).zip(r.into_iter()) {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^ ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]   --> benches/twosum.rs:24:51
[INFO] [stdout]    |
[INFO] [stdout] 24 |     b.iter(|| for (f1, f2) in l.into_iter().zip(r.into_iter()) {
[INFO] [stdout]    |                                                   ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 24 |     b.iter(|| for (f1, f2) in l.into_iter().zip(r.iter()) {
[INFO] [stdout]    |                                                   ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 24 |     b.iter(|| for (f1, f2) in l.into_iter().zip(IntoIterator::into_iter(r)) {
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^ ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]   --> benches/twosum.rs:39:33
[INFO] [stdout]    |
[INFO] [stdout] 39 |     b.iter(|| for (f1, f2) in l.into_iter().zip(r.into_iter()) {
[INFO] [stdout]    |                                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 39 |     b.iter(|| for (f1, f2) in l.iter().zip(r.into_iter()) {
[INFO] [stdout]    |                                 ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 39 |     b.iter(|| for (f1, f2) in IntoIterator::into_iter(l).zip(r.into_iter()) {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^ ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]   --> benches/twosum.rs:39:51
[INFO] [stdout]    |
[INFO] [stdout] 39 |     b.iter(|| for (f1, f2) in l.into_iter().zip(r.into_iter()) {
[INFO] [stdout]    |                                                   ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 39 |     b.iter(|| for (f1, f2) in l.into_iter().zip(r.iter()) {
[INFO] [stdout]    |                                                   ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 39 |     b.iter(|| for (f1, f2) in l.into_iter().zip(IntoIterator::into_iter(r)) {
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^ ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]   --> benches/twosum.rs:54:33
[INFO] [stdout]    |
[INFO] [stdout] 54 |     b.iter(|| for (f1, f2) in l.into_iter().zip(r.into_iter()) {
[INFO] [stdout]    |                                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 54 |     b.iter(|| for (f1, f2) in l.iter().zip(r.into_iter()) {
[INFO] [stdout]    |                                 ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 54 |     b.iter(|| for (f1, f2) in IntoIterator::into_iter(l).zip(r.into_iter()) {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^ ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]   --> benches/twosum.rs:54:51
[INFO] [stdout]    |
[INFO] [stdout] 54 |     b.iter(|| for (f1, f2) in l.into_iter().zip(r.into_iter()) {
[INFO] [stdout]    |                                                   ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 54 |     b.iter(|| for (f1, f2) in l.into_iter().zip(r.iter()) {
[INFO] [stdout]    |                                                   ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 54 |     b.iter(|| for (f1, f2) in l.into_iter().zip(IntoIterator::into_iter(r)) {
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^ ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]   --> benches/twoproduct.rs:24:33
[INFO] [stdout]    |
[INFO] [stdout] 24 |     b.iter(|| for (f1, f2) in l.into_iter().zip(r.into_iter()) {
[INFO] [stdout]    |                                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 24 |     b.iter(|| for (f1, f2) in l.iter().zip(r.into_iter()) {
[INFO] [stdout]    |                                 ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 24 |     b.iter(|| for (f1, f2) in IntoIterator::into_iter(l).zip(r.into_iter()) {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^ ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]   --> benches/twoproduct.rs:24:51
[INFO] [stdout]    |
[INFO] [stdout] 24 |     b.iter(|| for (f1, f2) in l.into_iter().zip(r.into_iter()) {
[INFO] [stdout]    |                                                   ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 24 |     b.iter(|| for (f1, f2) in l.into_iter().zip(r.iter()) {
[INFO] [stdout]    |                                                   ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 24 |     b.iter(|| for (f1, f2) in l.into_iter().zip(IntoIterator::into_iter(r)) {
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^ ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]   --> benches/twoproduct.rs:39:33
[INFO] [stdout]    |
[INFO] [stdout] 39 |     b.iter(|| for (f1, f2) in l.into_iter().zip(r.into_iter()) {
[INFO] [stdout]    |                                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 39 |     b.iter(|| for (f1, f2) in l.iter().zip(r.into_iter()) {
[INFO] [stdout]    |                                 ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 39 |     b.iter(|| for (f1, f2) in IntoIterator::into_iter(l).zip(r.into_iter()) {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^ ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]   --> benches/twoproduct.rs:39:51
[INFO] [stdout]    |
[INFO] [stdout] 39 |     b.iter(|| for (f1, f2) in l.into_iter().zip(r.into_iter()) {
[INFO] [stdout]    |                                                   ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 39 |     b.iter(|| for (f1, f2) in l.into_iter().zip(r.iter()) {
[INFO] [stdout]    |                                                   ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 39 |     b.iter(|| for (f1, f2) in l.into_iter().zip(IntoIterator::into_iter(r)) {
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^ ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]   --> benches/twoproduct.rs:54:33
[INFO] [stdout]    |
[INFO] [stdout] 54 |     b.iter(|| for (f1, f2) in l.into_iter().zip(r.into_iter()) {
[INFO] [stdout]    |                                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 54 |     b.iter(|| for (f1, f2) in l.iter().zip(r.into_iter()) {
[INFO] [stdout]    |                                 ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 54 |     b.iter(|| for (f1, f2) in IntoIterator::into_iter(l).zip(r.into_iter()) {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^ ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]   --> benches/twoproduct.rs:54:51
[INFO] [stdout]    |
[INFO] [stdout] 54 |     b.iter(|| for (f1, f2) in l.into_iter().zip(r.into_iter()) {
[INFO] [stdout]    |                                                   ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 54 |     b.iter(|| for (f1, f2) in l.into_iter().zip(r.iter()) {
[INFO] [stdout]    |                                                   ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 54 |     b.iter(|| for (f1, f2) in l.into_iter().zip(IntoIterator::into_iter(r)) {
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^ ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]   --> benches/split.rs:19:26
[INFO] [stdout]    |
[INFO] [stdout] 19 |     b.iter(|| for f in a.into_iter() {
[INFO] [stdout]    |                          ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 19 |     b.iter(|| for f in a.iter() {
[INFO] [stdout]    |                          ^^^^
[INFO] [stdout] help: or remove `.into_iter()` to iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 19 |     b.iter(|| for f in a {
[INFO] [stdout]    |                        --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]   --> benches/split.rs:32:26
[INFO] [stdout]    |
[INFO] [stdout] 32 |     b.iter(|| for f in a.into_iter() {
[INFO] [stdout]    |                          ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 32 |     b.iter(|| for f in a.iter() {
[INFO] [stdout]    |                          ^^^^
[INFO] [stdout] help: or remove `.into_iter()` to iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 32 |     b.iter(|| for f in a {
[INFO] [stdout]    |                        --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]   --> benches/split.rs:45:26
[INFO] [stdout]    |
[INFO] [stdout] 45 |     b.iter(|| for f in a.into_iter() {
[INFO] [stdout]    |                          ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 45 |     b.iter(|| for f in a.iter() {
[INFO] [stdout]    |                          ^^^^
[INFO] [stdout] help: or remove `.into_iter()` to iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 45 |     b.iter(|| for f in a {
[INFO] [stdout]    |                        --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.91s
[INFO] running `Command { std: "docker" "inspect" "9562a29aa225443355563143a87a3a50cb6feeb8ae024bbf4e9b978470ceec17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9562a29aa225443355563143a87a3a50cb6feeb8ae024bbf4e9b978470ceec17", kill_on_drop: false }`
[INFO] [stdout] 9562a29aa225443355563143a87a3a50cb6feeb8ae024bbf4e9b978470ceec17