[INFO] fetching crate arraylib 0.3.0...
[INFO] checking arraylib-0.3.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate arraylib 0.3.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate arraylib 0.3.0
[INFO] finished tweaking crates.io crate arraylib 0.3.0
[INFO] tweaked toml for crates.io crate arraylib 0.3.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate arraylib 0.3.0 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] adea7fa17aa59c7efad9c9be9edff4a1793e9e580501d2aa847bfab9ee37cb13
[INFO] running `Command { std: "docker" "start" "-a" "adea7fa17aa59c7efad9c9be9edff4a1793e9e580501d2aa847bfab9ee37cb13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "adea7fa17aa59c7efad9c9be9edff4a1793e9e580501d2aa847bfab9ee37cb13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adea7fa17aa59c7efad9c9be9edff4a1793e9e580501d2aa847bfab9ee37cb13", kill_on_drop: false }`
[INFO] [stdout] adea7fa17aa59c7efad9c9be9edff4a1793e9e580501d2aa847bfab9ee37cb13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fbedc881df110fffd2bcf7fd71cd6212188b936dcaeca0b3d0202f7a5771c522
[INFO] running `Command { std: "docker" "start" "-a" "fbedc881df110fffd2bcf7fd71cd6212188b936dcaeca0b3d0202f7a5771c522", kill_on_drop: false }`
[INFO] [stderr]     Checking arraylib v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition value: `array-impls-33-256`
[INFO] [stdout]    --> src/util/local_macros.rs:52:15
[INFO] [stdout]     |
[INFO] [stdout]  52 |         #[cfg(feature = "array-impls-33-256")]
[INFO] [stdout]     |               ^^^^^^^^^^--------------------
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: there is a expected value with a similar name: `"array-impls-129-256"`
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/array.rs:502:1
[INFO] [stdout]     |
[INFO] [stdout] 502 | array_impls!(array_impl);
[INFO] [stdout]     | ------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `alloc`, `array-impls-129-256`, `array-impls-33-128`, and `nightly`
[INFO] [stdout]     = help: consider adding `array-impls-33-256` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `array_impls` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `array-impls-33-256`
[INFO] [stdout]    --> src/util/local_macros.rs:52:15
[INFO] [stdout]     |
[INFO] [stdout]  52 |         #[cfg(feature = "array-impls-33-256")]
[INFO] [stdout]     |               ^^^^^^^^^^--------------------
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: there is a expected value with a similar name: `"array-impls-129-256"`
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/transform/as_ref.rs:134:1
[INFO] [stdout]     |
[INFO] [stdout] 134 | array_impls!(as_ref_impl);
[INFO] [stdout]     | ------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `alloc`, `array-impls-129-256`, `array-impls-33-128`, and `nightly`
[INFO] [stdout]     = help: consider adding `array-impls-33-256` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: this warning originates in the macro `array_impls` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `array-impls-33-256`
[INFO] [stdout]   --> src/util/local_macros.rs:52:15
[INFO] [stdout]    |
[INFO] [stdout] 52 |         #[cfg(feature = "array-impls-33-256")]
[INFO] [stdout]    |               ^^^^^^^^^^--------------------
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: there is a expected value with a similar name: `"array-impls-129-256"`
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/transform/map.rs:64:1
[INFO] [stdout]    |
[INFO] [stdout] 64 | array_impls!(array_map_impl);
[INFO] [stdout]    | ---------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `alloc`, `array-impls-129-256`, `array-impls-33-128`, and `nightly`
[INFO] [stdout]    = help: consider adding `array-impls-33-256` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: this warning originates in the macro `array_impls` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `array-impls-33-256`
[INFO] [stdout]    --> src/util/local_macros.rs:52:15
[INFO] [stdout]     |
[INFO] [stdout]  52 |         #[cfg(feature = "array-impls-33-256")]
[INFO] [stdout]     |               ^^^^^^^^^^--------------------
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: there is a expected value with a similar name: `"array-impls-129-256"`
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/array.rs:502:1
[INFO] [stdout]     |
[INFO] [stdout] 502 | array_impls!(array_impl);
[INFO] [stdout]     | ------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `alloc`, `array-impls-129-256`, `array-impls-33-128`, and `nightly`
[INFO] [stdout]     = help: consider adding `array-impls-33-256` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `array_impls` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `array-impls-33-256`
[INFO] [stdout]    --> src/util/local_macros.rs:52:15
[INFO] [stdout]     |
[INFO] [stdout]  52 |         #[cfg(feature = "array-impls-33-256")]
[INFO] [stdout]     |               ^^^^^^^^^^--------------------
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: there is a expected value with a similar name: `"array-impls-129-256"`
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/transform/as_ref.rs:134:1
[INFO] [stdout]     |
[INFO] [stdout] 134 | array_impls!(as_ref_impl);
[INFO] [stdout]     | ------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `alloc`, `array-impls-129-256`, `array-impls-33-128`, and `nightly`
[INFO] [stdout]     = help: consider adding `array-impls-33-256` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: this warning originates in the macro `array_impls` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `array-impls-33-256`
[INFO] [stdout]   --> src/util/local_macros.rs:52:15
[INFO] [stdout]    |
[INFO] [stdout] 52 |         #[cfg(feature = "array-impls-33-256")]
[INFO] [stdout]    |               ^^^^^^^^^^--------------------
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: there is a expected value with a similar name: `"array-impls-129-256"`
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/transform/map.rs:64:1
[INFO] [stdout]    |
[INFO] [stdout] 64 | array_impls!(array_map_impl);
[INFO] [stdout]    | ---------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `alloc`, `array-impls-129-256`, `array-impls-33-128`, and `nightly`
[INFO] [stdout]    = help: consider adding `array-impls-33-256` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: this warning originates in the macro `array_impls` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/util/init.rs:103:76
[INFO] [stdout]     |
[INFO] [stdout] 103 |                     let inited: &mut [Item] = self.arr[..self.initialized].assume_init_mut();
[INFO] [stdout]     |                                                                            ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `MaybeUninitSlice::assume_init_mut(...)` to keep using the current method
[INFO] [stdout]     = note: `#[warn(unstable_name_collisions)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout] help: add `#![feature(maybe_uninit_slice)]` to the crate attributes to enable `<[MaybeUninit<T>]>::assume_init_mut`
[INFO] [stdout]    --> src/lib.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 + #![feature(maybe_uninit_slice)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/iter_move.rs:141:19
[INFO] [stdout]     |
[INFO] [stdout] 141 |             slice.assume_init_mut()
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `MaybeUninitSlice::assume_init_mut(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(maybe_uninit_slice)]` to the crate attributes to enable `<[MaybeUninit<T>]>::assume_init_mut`
[INFO] [stdout]    --> src/lib.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 + #![feature(maybe_uninit_slice)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/util/init.rs:103:76
[INFO] [stdout]     |
[INFO] [stdout] 103 |                     let inited: &mut [Item] = self.arr[..self.initialized].assume_init_mut();
[INFO] [stdout]     |                                                                            ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `MaybeUninitSlice::assume_init_mut(...)` to keep using the current method
[INFO] [stdout]     = note: `#[warn(unstable_name_collisions)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout] help: add `#![feature(maybe_uninit_slice)]` to the crate attributes to enable `<[MaybeUninit<T>]>::assume_init_mut`
[INFO] [stdout]    --> src/lib.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 + #![feature(maybe_uninit_slice)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/iter/chunks.rs:86:52
[INFO] [stdout]    |
[INFO] [stdout] 86 |         let mut iter = [0, 1, 2, 3, 4].iter_move().array_chunks::<[_; 2]>();
[INFO] [stdout]    |                                                    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `IteratorExt::array_chunks(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(iter_array_chunks)]` to the crate attributes to enable `array_chunks`
[INFO] [stdout]   --> src/lib.rs:121:1
[INFO] [stdout]    |
[INFO] [stdout] 121+ #![feature(iter_array_chunks)]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/iter/chunks.rs:95:52
[INFO] [stdout]    |
[INFO] [stdout] 95 |         let mut iter = [0, 1, 2, 3, 4].iter_move().array_chunks::<[_; 2]>().rev();
[INFO] [stdout]    |                                                    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `IteratorExt::array_chunks(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(iter_array_chunks)]` to the crate attributes to enable `array_chunks`
[INFO] [stdout]   --> src/lib.rs:121:1
[INFO] [stdout]    |
[INFO] [stdout] 121+ #![feature(iter_array_chunks)]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/chunks.rs:106:58
[INFO] [stdout]     |
[INFO] [stdout] 106 |                   let array = [0; $array_size].iter_move().array_chunks::<[_; $chunk_size]>();
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 121 | /         assert_len! {
[INFO] [stdout] 122 | |             size: 0, chunk: 1, expect: 0;
[INFO] [stdout] 123 | |             size: 1, chunk: 1, expect: 1;
[INFO] [stdout] 124 | |             size: 2, chunk: 1, expect: 2;
[INFO] [stdout] ...   |
[INFO] [stdout] 144 | |             size: 32, chunk: 3, expect: 10;
[INFO] [stdout] 145 | |         }
[INFO] [stdout]     | |_________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `IteratorExt::array_chunks(...)` to keep using the current method
[INFO] [stdout]     = note: this warning originates in the macro `assert_len` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: add `#![feature(iter_array_chunks)]` to the crate attributes to enable `array_chunks`
[INFO] [stdout]    --> src/lib.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 + #![feature(iter_array_chunks)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/chunks.rs:106:58
[INFO] [stdout]     |
[INFO] [stdout] 106 |                   let array = [0; $array_size].iter_move().array_chunks::<[_; $chunk_size]>();
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 121 | /         assert_len! {
[INFO] [stdout] 122 | |             size: 0, chunk: 1, expect: 0;
[INFO] [stdout] 123 | |             size: 1, chunk: 1, expect: 1;
[INFO] [stdout] 124 | |             size: 2, chunk: 1, expect: 2;
[INFO] [stdout] ...   |
[INFO] [stdout] 144 | |             size: 32, chunk: 3, expect: 10;
[INFO] [stdout] 145 | |         }
[INFO] [stdout]     | |_________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `IteratorExt::array_chunks(...)` to keep using the current method
[INFO] [stdout]     = note: this warning originates in the macro `assert_len` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: add `#![feature(iter_array_chunks)]` to the crate attributes to enable `array_chunks`
[INFO] [stdout]    --> src/lib.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 + #![feature(iter_array_chunks)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/chunks.rs:106:58
[INFO] [stdout]     |
[INFO] [stdout] 106 |                   let array = [0; $array_size].iter_move().array_chunks::<[_; $chunk_size]>();
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 121 | /         assert_len! {
[INFO] [stdout] 122 | |             size: 0, chunk: 1, expect: 0;
[INFO] [stdout] 123 | |             size: 1, chunk: 1, expect: 1;
[INFO] [stdout] 124 | |             size: 2, chunk: 1, expect: 2;
[INFO] [stdout] ...   |
[INFO] [stdout] 144 | |             size: 32, chunk: 3, expect: 10;
[INFO] [stdout] 145 | |         }
[INFO] [stdout]     | |_________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `IteratorExt::array_chunks(...)` to keep using the current method
[INFO] [stdout]     = note: this warning originates in the macro `assert_len` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: add `#![feature(iter_array_chunks)]` to the crate attributes to enable `array_chunks`
[INFO] [stdout]    --> src/lib.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 + #![feature(iter_array_chunks)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/chunks.rs:106:58
[INFO] [stdout]     |
[INFO] [stdout] 106 |                   let array = [0; $array_size].iter_move().array_chunks::<[_; $chunk_size]>();
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 121 | /         assert_len! {
[INFO] [stdout] 122 | |             size: 0, chunk: 1, expect: 0;
[INFO] [stdout] 123 | |             size: 1, chunk: 1, expect: 1;
[INFO] [stdout] 124 | |             size: 2, chunk: 1, expect: 2;
[INFO] [stdout] ...   |
[INFO] [stdout] 144 | |             size: 32, chunk: 3, expect: 10;
[INFO] [stdout] 145 | |         }
[INFO] [stdout]     | |_________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `IteratorExt::array_chunks(...)` to keep using the current method
[INFO] [stdout]     = note: this warning originates in the macro `assert_len` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: add `#![feature(iter_array_chunks)]` to the crate attributes to enable `array_chunks`
[INFO] [stdout]    --> src/lib.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 + #![feature(iter_array_chunks)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/chunks.rs:106:58
[INFO] [stdout]     |
[INFO] [stdout] 106 |                   let array = [0; $array_size].iter_move().array_chunks::<[_; $chunk_size]>();
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 121 | /         assert_len! {
[INFO] [stdout] 122 | |             size: 0, chunk: 1, expect: 0;
[INFO] [stdout] 123 | |             size: 1, chunk: 1, expect: 1;
[INFO] [stdout] 124 | |             size: 2, chunk: 1, expect: 2;
[INFO] [stdout] ...   |
[INFO] [stdout] 144 | |             size: 32, chunk: 3, expect: 10;
[INFO] [stdout] 145 | |         }
[INFO] [stdout]     | |_________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `IteratorExt::array_chunks(...)` to keep using the current method
[INFO] [stdout]     = note: this warning originates in the macro `assert_len` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: add `#![feature(iter_array_chunks)]` to the crate attributes to enable `array_chunks`
[INFO] [stdout]    --> src/lib.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 + #![feature(iter_array_chunks)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/chunks.rs:106:58
[INFO] [stdout]     |
[INFO] [stdout] 106 |                   let array = [0; $array_size].iter_move().array_chunks::<[_; $chunk_size]>();
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 121 | /         assert_len! {
[INFO] [stdout] 122 | |             size: 0, chunk: 1, expect: 0;
[INFO] [stdout] 123 | |             size: 1, chunk: 1, expect: 1;
[INFO] [stdout] 124 | |             size: 2, chunk: 1, expect: 2;
[INFO] [stdout] ...   |
[INFO] [stdout] 144 | |             size: 32, chunk: 3, expect: 10;
[INFO] [stdout] 145 | |         }
[INFO] [stdout]     | |_________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `IteratorExt::array_chunks(...)` to keep using the current method
[INFO] [stdout]     = note: this warning originates in the macro `assert_len` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: add `#![feature(iter_array_chunks)]` to the crate attributes to enable `array_chunks`
[INFO] [stdout]    --> src/lib.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 + #![feature(iter_array_chunks)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/chunks.rs:106:58
[INFO] [stdout]     |
[INFO] [stdout] 106 |                   let array = [0; $array_size].iter_move().array_chunks::<[_; $chunk_size]>();
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 121 | /         assert_len! {
[INFO] [stdout] 122 | |             size: 0, chunk: 1, expect: 0;
[INFO] [stdout] 123 | |             size: 1, chunk: 1, expect: 1;
[INFO] [stdout] 124 | |             size: 2, chunk: 1, expect: 2;
[INFO] [stdout] ...   |
[INFO] [stdout] 144 | |             size: 32, chunk: 3, expect: 10;
[INFO] [stdout] 145 | |         }
[INFO] [stdout]     | |_________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `IteratorExt::array_chunks(...)` to keep using the current method
[INFO] [stdout]     = note: this warning originates in the macro `assert_len` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: add `#![feature(iter_array_chunks)]` to the crate attributes to enable `array_chunks`
[INFO] [stdout]    --> src/lib.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 + #![feature(iter_array_chunks)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/chunks.rs:106:58
[INFO] [stdout]     |
[INFO] [stdout] 106 |                   let array = [0; $array_size].iter_move().array_chunks::<[_; $chunk_size]>();
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 121 | /         assert_len! {
[INFO] [stdout] 122 | |             size: 0, chunk: 1, expect: 0;
[INFO] [stdout] 123 | |             size: 1, chunk: 1, expect: 1;
[INFO] [stdout] 124 | |             size: 2, chunk: 1, expect: 2;
[INFO] [stdout] ...   |
[INFO] [stdout] 144 | |             size: 32, chunk: 3, expect: 10;
[INFO] [stdout] 145 | |         }
[INFO] [stdout]     | |_________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `IteratorExt::array_chunks(...)` to keep using the current method
[INFO] [stdout]     = note: this warning originates in the macro `assert_len` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: add `#![feature(iter_array_chunks)]` to the crate attributes to enable `array_chunks`
[INFO] [stdout]    --> src/lib.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 + #![feature(iter_array_chunks)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/chunks.rs:106:58
[INFO] [stdout]     |
[INFO] [stdout] 106 |                   let array = [0; $array_size].iter_move().array_chunks::<[_; $chunk_size]>();
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 121 | /         assert_len! {
[INFO] [stdout] 122 | |             size: 0, chunk: 1, expect: 0;
[INFO] [stdout] 123 | |             size: 1, chunk: 1, expect: 1;
[INFO] [stdout] 124 | |             size: 2, chunk: 1, expect: 2;
[INFO] [stdout] ...   |
[INFO] [stdout] 144 | |             size: 32, chunk: 3, expect: 10;
[INFO] [stdout] 145 | |         }
[INFO] [stdout]     | |_________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `IteratorExt::array_chunks(...)` to keep using the current method
[INFO] [stdout]     = note: this warning originates in the macro `assert_len` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: add `#![feature(iter_array_chunks)]` to the crate attributes to enable `array_chunks`
[INFO] [stdout]    --> src/lib.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 + #![feature(iter_array_chunks)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/chunks.rs:106:58
[INFO] [stdout]     |
[INFO] [stdout] 106 |                   let array = [0; $array_size].iter_move().array_chunks::<[_; $chunk_size]>();
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 121 | /         assert_len! {
[INFO] [stdout] 122 | |             size: 0, chunk: 1, expect: 0;
[INFO] [stdout] 123 | |             size: 1, chunk: 1, expect: 1;
[INFO] [stdout] 124 | |             size: 2, chunk: 1, expect: 2;
[INFO] [stdout] ...   |
[INFO] [stdout] 144 | |             size: 32, chunk: 3, expect: 10;
[INFO] [stdout] 145 | |         }
[INFO] [stdout]     | |_________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `IteratorExt::array_chunks(...)` to keep using the current method
[INFO] [stdout]     = note: this warning originates in the macro `assert_len` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: add `#![feature(iter_array_chunks)]` to the crate attributes to enable `array_chunks`
[INFO] [stdout]    --> src/lib.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 + #![feature(iter_array_chunks)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/chunks.rs:106:58
[INFO] [stdout]     |
[INFO] [stdout] 106 |                   let array = [0; $array_size].iter_move().array_chunks::<[_; $chunk_size]>();
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 121 | /         assert_len! {
[INFO] [stdout] 122 | |             size: 0, chunk: 1, expect: 0;
[INFO] [stdout] 123 | |             size: 1, chunk: 1, expect: 1;
[INFO] [stdout] 124 | |             size: 2, chunk: 1, expect: 2;
[INFO] [stdout] ...   |
[INFO] [stdout] 144 | |             size: 32, chunk: 3, expect: 10;
[INFO] [stdout] 145 | |         }
[INFO] [stdout]     | |_________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `IteratorExt::array_chunks(...)` to keep using the current method
[INFO] [stdout]     = note: this warning originates in the macro `assert_len` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: add `#![feature(iter_array_chunks)]` to the crate attributes to enable `array_chunks`
[INFO] [stdout]    --> src/lib.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 + #![feature(iter_array_chunks)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/chunks.rs:106:58
[INFO] [stdout]     |
[INFO] [stdout] 106 |                   let array = [0; $array_size].iter_move().array_chunks::<[_; $chunk_size]>();
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 121 | /         assert_len! {
[INFO] [stdout] 122 | |             size: 0, chunk: 1, expect: 0;
[INFO] [stdout] 123 | |             size: 1, chunk: 1, expect: 1;
[INFO] [stdout] 124 | |             size: 2, chunk: 1, expect: 2;
[INFO] [stdout] ...   |
[INFO] [stdout] 144 | |             size: 32, chunk: 3, expect: 10;
[INFO] [stdout] 145 | |         }
[INFO] [stdout]     | |_________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `IteratorExt::array_chunks(...)` to keep using the current method
[INFO] [stdout]     = note: this warning originates in the macro `assert_len` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: add `#![feature(iter_array_chunks)]` to the crate attributes to enable `array_chunks`
[INFO] [stdout]    --> src/lib.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 + #![feature(iter_array_chunks)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/chunks.rs:106:58
[INFO] [stdout]     |
[INFO] [stdout] 106 |                   let array = [0; $array_size].iter_move().array_chunks::<[_; $chunk_size]>();
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 121 | /         assert_len! {
[INFO] [stdout] 122 | |             size: 0, chunk: 1, expect: 0;
[INFO] [stdout] 123 | |             size: 1, chunk: 1, expect: 1;
[INFO] [stdout] 124 | |             size: 2, chunk: 1, expect: 2;
[INFO] [stdout] ...   |
[INFO] [stdout] 144 | |             size: 32, chunk: 3, expect: 10;
[INFO] [stdout] 145 | |         }
[INFO] [stdout]     | |_________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `IteratorExt::array_chunks(...)` to keep using the current method
[INFO] [stdout]     = note: this warning originates in the macro `assert_len` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: add `#![feature(iter_array_chunks)]` to the crate attributes to enable `array_chunks`
[INFO] [stdout]    --> src/lib.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 + #![feature(iter_array_chunks)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/chunks.rs:106:58
[INFO] [stdout]     |
[INFO] [stdout] 106 |                   let array = [0; $array_size].iter_move().array_chunks::<[_; $chunk_size]>();
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 121 | /         assert_len! {
[INFO] [stdout] 122 | |             size: 0, chunk: 1, expect: 0;
[INFO] [stdout] 123 | |             size: 1, chunk: 1, expect: 1;
[INFO] [stdout] 124 | |             size: 2, chunk: 1, expect: 2;
[INFO] [stdout] ...   |
[INFO] [stdout] 144 | |             size: 32, chunk: 3, expect: 10;
[INFO] [stdout] 145 | |         }
[INFO] [stdout]     | |_________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `IteratorExt::array_chunks(...)` to keep using the current method
[INFO] [stdout]     = note: this warning originates in the macro `assert_len` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: add `#![feature(iter_array_chunks)]` to the crate attributes to enable `array_chunks`
[INFO] [stdout]    --> src/lib.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 + #![feature(iter_array_chunks)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/chunks.rs:106:58
[INFO] [stdout]     |
[INFO] [stdout] 106 |                   let array = [0; $array_size].iter_move().array_chunks::<[_; $chunk_size]>();
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 121 | /         assert_len! {
[INFO] [stdout] 122 | |             size: 0, chunk: 1, expect: 0;
[INFO] [stdout] 123 | |             size: 1, chunk: 1, expect: 1;
[INFO] [stdout] 124 | |             size: 2, chunk: 1, expect: 2;
[INFO] [stdout] ...   |
[INFO] [stdout] 144 | |             size: 32, chunk: 3, expect: 10;
[INFO] [stdout] 145 | |         }
[INFO] [stdout]     | |_________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `IteratorExt::array_chunks(...)` to keep using the current method
[INFO] [stdout]     = note: this warning originates in the macro `assert_len` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: add `#![feature(iter_array_chunks)]` to the crate attributes to enable `array_chunks`
[INFO] [stdout]    --> src/lib.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 + #![feature(iter_array_chunks)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/chunks.rs:106:58
[INFO] [stdout]     |
[INFO] [stdout] 106 |                   let array = [0; $array_size].iter_move().array_chunks::<[_; $chunk_size]>();
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 121 | /         assert_len! {
[INFO] [stdout] 122 | |             size: 0, chunk: 1, expect: 0;
[INFO] [stdout] 123 | |             size: 1, chunk: 1, expect: 1;
[INFO] [stdout] 124 | |             size: 2, chunk: 1, expect: 2;
[INFO] [stdout] ...   |
[INFO] [stdout] 144 | |             size: 32, chunk: 3, expect: 10;
[INFO] [stdout] 145 | |         }
[INFO] [stdout]     | |_________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `IteratorExt::array_chunks(...)` to keep using the current method
[INFO] [stdout]     = note: this warning originates in the macro `assert_len` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: add `#![feature(iter_array_chunks)]` to the crate attributes to enable `array_chunks`
[INFO] [stdout]    --> src/lib.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 + #![feature(iter_array_chunks)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/chunks.rs:106:58
[INFO] [stdout]     |
[INFO] [stdout] 106 |                   let array = [0; $array_size].iter_move().array_chunks::<[_; $chunk_size]>();
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 121 | /         assert_len! {
[INFO] [stdout] 122 | |             size: 0, chunk: 1, expect: 0;
[INFO] [stdout] 123 | |             size: 1, chunk: 1, expect: 1;
[INFO] [stdout] 124 | |             size: 2, chunk: 1, expect: 2;
[INFO] [stdout] ...   |
[INFO] [stdout] 144 | |             size: 32, chunk: 3, expect: 10;
[INFO] [stdout] 145 | |         }
[INFO] [stdout]     | |_________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `IteratorExt::array_chunks(...)` to keep using the current method
[INFO] [stdout]     = note: this warning originates in the macro `assert_len` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: add `#![feature(iter_array_chunks)]` to the crate attributes to enable `array_chunks`
[INFO] [stdout]    --> src/lib.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 + #![feature(iter_array_chunks)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/chunks.rs:106:58
[INFO] [stdout]     |
[INFO] [stdout] 106 |                   let array = [0; $array_size].iter_move().array_chunks::<[_; $chunk_size]>();
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 121 | /         assert_len! {
[INFO] [stdout] 122 | |             size: 0, chunk: 1, expect: 0;
[INFO] [stdout] 123 | |             size: 1, chunk: 1, expect: 1;
[INFO] [stdout] 124 | |             size: 2, chunk: 1, expect: 2;
[INFO] [stdout] ...   |
[INFO] [stdout] 144 | |             size: 32, chunk: 3, expect: 10;
[INFO] [stdout] 145 | |         }
[INFO] [stdout]     | |_________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `IteratorExt::array_chunks(...)` to keep using the current method
[INFO] [stdout]     = note: this warning originates in the macro `assert_len` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: add `#![feature(iter_array_chunks)]` to the crate attributes to enable `array_chunks`
[INFO] [stdout]    --> src/lib.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 + #![feature(iter_array_chunks)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/chunks.rs:106:58
[INFO] [stdout]     |
[INFO] [stdout] 106 |                   let array = [0; $array_size].iter_move().array_chunks::<[_; $chunk_size]>();
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 121 | /         assert_len! {
[INFO] [stdout] 122 | |             size: 0, chunk: 1, expect: 0;
[INFO] [stdout] 123 | |             size: 1, chunk: 1, expect: 1;
[INFO] [stdout] 124 | |             size: 2, chunk: 1, expect: 2;
[INFO] [stdout] ...   |
[INFO] [stdout] 144 | |             size: 32, chunk: 3, expect: 10;
[INFO] [stdout] 145 | |         }
[INFO] [stdout]     | |_________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `IteratorExt::array_chunks(...)` to keep using the current method
[INFO] [stdout]     = note: this warning originates in the macro `assert_len` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: add `#![feature(iter_array_chunks)]` to the crate attributes to enable `array_chunks`
[INFO] [stdout]    --> src/lib.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 + #![feature(iter_array_chunks)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/chunks.rs:106:58
[INFO] [stdout]     |
[INFO] [stdout] 106 |                   let array = [0; $array_size].iter_move().array_chunks::<[_; $chunk_size]>();
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 121 | /         assert_len! {
[INFO] [stdout] 122 | |             size: 0, chunk: 1, expect: 0;
[INFO] [stdout] 123 | |             size: 1, chunk: 1, expect: 1;
[INFO] [stdout] 124 | |             size: 2, chunk: 1, expect: 2;
[INFO] [stdout] ...   |
[INFO] [stdout] 144 | |             size: 32, chunk: 3, expect: 10;
[INFO] [stdout] 145 | |         }
[INFO] [stdout]     | |_________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `IteratorExt::array_chunks(...)` to keep using the current method
[INFO] [stdout]     = note: this warning originates in the macro `assert_len` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: add `#![feature(iter_array_chunks)]` to the crate attributes to enable `array_chunks`
[INFO] [stdout]    --> src/lib.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 + #![feature(iter_array_chunks)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/chunks.rs:106:58
[INFO] [stdout]     |
[INFO] [stdout] 106 |                   let array = [0; $array_size].iter_move().array_chunks::<[_; $chunk_size]>();
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 121 | /         assert_len! {
[INFO] [stdout] 122 | |             size: 0, chunk: 1, expect: 0;
[INFO] [stdout] 123 | |             size: 1, chunk: 1, expect: 1;
[INFO] [stdout] 124 | |             size: 2, chunk: 1, expect: 2;
[INFO] [stdout] ...   |
[INFO] [stdout] 144 | |             size: 32, chunk: 3, expect: 10;
[INFO] [stdout] 145 | |         }
[INFO] [stdout]     | |_________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `IteratorExt::array_chunks(...)` to keep using the current method
[INFO] [stdout]     = note: this warning originates in the macro `assert_len` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: add `#![feature(iter_array_chunks)]` to the crate attributes to enable `array_chunks`
[INFO] [stdout]    --> src/lib.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 + #![feature(iter_array_chunks)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/iter_move.rs:141:19
[INFO] [stdout]     |
[INFO] [stdout] 141 |             slice.assume_init_mut()
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `MaybeUninitSlice::assume_init_mut(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(maybe_uninit_slice)]` to the crate attributes to enable `<[MaybeUninit<T>]>::assume_init_mut`
[INFO] [stdout]    --> src/lib.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 + #![feature(maybe_uninit_slice)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/windows.rs:143:37
[INFO] [stdout]     |
[INFO] [stdout] 143 |         let mut iter = [0, 1, 2, 3].array_windows::<[_; 2]>();
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `Slice::array_windows(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(array_windows)]` to the crate attributes to enable `core::slice::<impl [T]>::array_windows`
[INFO] [stdout]    --> src/lib.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 + #![feature(array_windows)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/windows.rs:153:37
[INFO] [stdout]     |
[INFO] [stdout] 153 |         let mut iter = [0, 1, 2, 3].array_windows::<[_; 2]>().rev();
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `Slice::array_windows(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(array_windows)]` to the crate attributes to enable `core::slice::<impl [T]>::array_windows`
[INFO] [stdout]    --> src/lib.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 + #![feature(array_windows)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/windows.rs:164:14
[INFO] [stdout]     |
[INFO] [stdout] 164 |             .array_windows::<[_; 2]>()
[INFO] [stdout]     |              ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `Slice::array_windows(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(array_windows)]` to the crate attributes to enable `core::slice::<impl [T]>::array_windows`
[INFO] [stdout]    --> src/lib.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 + #![feature(array_windows)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/windows.rs:172:43
[INFO] [stdout]     |
[INFO] [stdout] 172 |         let mut iter = [0, 1, 2, 3, 4, 5].array_windows::<[_; 2]>();
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `Slice::array_windows(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(array_windows)]` to the crate attributes to enable `core::slice::<impl [T]>::array_windows`
[INFO] [stdout]    --> src/lib.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 + #![feature(array_windows)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/windows.rs:181:43
[INFO] [stdout]     |
[INFO] [stdout] 181 |         let mut iter = [0, 1, 2, 3, 4, 5].array_windows::<[_; 2]>();
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `Slice::array_windows(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(array_windows)]` to the crate attributes to enable `core::slice::<impl [T]>::array_windows`
[INFO] [stdout]    --> src/lib.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 + #![feature(array_windows)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/iter/windows.rs:190:43
[INFO] [stdout]     |
[INFO] [stdout] 190 |         let mut iter = [0, 1, 2, 3, 4, 5].array_windows::<[_; 2]>();
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `Slice::array_windows(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(array_windows)]` to the crate attributes to enable `core::slice::<impl [T]>::array_windows`
[INFO] [stdout]    --> src/lib.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 + #![feature(array_windows)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<<Arr as Array>::Item, Infallible>
[INFO] [stdout]   --> src/util/init.rs:27:27
[INFO] [stdout]    |
[INFO] [stdout] 27 |     try_array_init_fn(|i| Ok::<_, Infallible>(init(i))).unwrap_or_else(|inf| match inf {})
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<<Arr as Array>::Item, Infallible>
[INFO] [stdout]   --> src/util/init.rs:60:36
[INFO] [stdout]    |
[INFO] [stdout] 60 |     try_unfold_array(init, |state| Ok::<_, Infallible>(f(state))).unwrap_or_else(|inf| match inf {})
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/ext/slice_ext.rs:116:25
[INFO] [stdout]     |
[INFO] [stdout] 116 |     fn array_windows<A>(&self) -> ArrayWindows<A>
[INFO] [stdout]     |                         ^^^^^     ^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 116 |     fn array_windows<A>(&self) -> ArrayWindows<'_, A>
[INFO] [stdout]     |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/ext/slice_ext.rs:191:25
[INFO] [stdout]     |
[INFO] [stdout] 191 |     fn array_windows<A>(&self) -> ArrayWindows<A>
[INFO] [stdout]     |                         ^^^^^     ^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 191 |     fn array_windows<A>(&self) -> ArrayWindows<'_, A>
[INFO] [stdout]     |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `arraylib` (lib) due to 2 previous errors; 7 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<<Arr as Array>::Item, Infallible>
[INFO] [stdout]   --> src/util/init.rs:27:27
[INFO] [stdout]    |
[INFO] [stdout] 27 |     try_array_init_fn(|i| Ok::<_, Infallible>(init(i))).unwrap_or_else(|inf| match inf {})
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<<Arr as Array>::Item, Infallible>
[INFO] [stdout]   --> src/util/init.rs:60:36
[INFO] [stdout]    |
[INFO] [stdout] 60 |     try_unfold_array(init, |state| Ok::<_, Infallible>(f(state))).unwrap_or_else(|inf| match inf {})
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/ext/slice_ext.rs:116:25
[INFO] [stdout]     |
[INFO] [stdout] 116 |     fn array_windows<A>(&self) -> ArrayWindows<A>
[INFO] [stdout]     |                         ^^^^^     ^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 116 |     fn array_windows<A>(&self) -> ArrayWindows<'_, A>
[INFO] [stdout]     |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/ext/slice_ext.rs:191:25
[INFO] [stdout]     |
[INFO] [stdout] 191 |     fn array_windows<A>(&self) -> ArrayWindows<A>
[INFO] [stdout]     |                         ^^^^^     ^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 191 |     fn array_windows<A>(&self) -> ArrayWindows<'_, A>
[INFO] [stdout]     |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `arraylib` (lib test) due to 2 previous errors; 36 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "fbedc881df110fffd2bcf7fd71cd6212188b936dcaeca0b3d0202f7a5771c522", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbedc881df110fffd2bcf7fd71cd6212188b936dcaeca0b3d0202f7a5771c522", kill_on_drop: false }`
[INFO] [stdout] fbedc881df110fffd2bcf7fd71cd6212188b936dcaeca0b3d0202f7a5771c522
