[INFO] fetching crate bus_writer 0.1.2...
[INFO] testing bus_writer-0.1.2 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate bus_writer 0.1.2 into /workspace/builds/worker-75/source
[INFO] validating manifest of crates.io crate bus_writer 0.1.2 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bus_writer 0.1.2
[INFO] finished tweaking crates.io crate bus_writer 0.1.2
[INFO] tweaked toml for crates.io crate bus_writer 0.1.2 written to /workspace/builds/worker-75/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "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" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded atomic-option v0.1.2
[INFO] [stderr]   Downloaded bus v2.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 368d5f2a353eda2c8e1c2e47ecd5eda79084f69504b53ee5a2cd90735a8f5d04
[INFO] running `Command { std: "docker" "start" "-a" "368d5f2a353eda2c8e1c2e47ecd5eda79084f69504b53ee5a2cd90735a8f5d04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "368d5f2a353eda2c8e1c2e47ecd5eda79084f69504b53ee5a2cd90735a8f5d04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "368d5f2a353eda2c8e1c2e47ecd5eda79084f69504b53ee5a2cd90735a8f5d04", kill_on_drop: false }`
[INFO] [stdout] 368d5f2a353eda2c8e1c2e47ecd5eda79084f69504b53ee5a2cd90735a8f5d04
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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=warn" "-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" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7fe02eacbba854fdedd913393843245df274060b0edc6cd7ce9f712156769b2c
[INFO] running `Command { std: "docker" "start" "-a" "7fe02eacbba854fdedd913393843245df274060b0edc6cd7ce9f712156769b2c", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling atomic-option v0.1.2
[INFO] [stderr]    Compiling crossbeam v0.3.2
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling parking_lot_core v0.7.2
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling crossbeam-channel v0.4.4
[INFO] [stderr]    Compiling bus v2.2.3
[INFO] [stderr]    Compiling bus_writer v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/writer.rs:100:22
[INFO] [stdout]     |
[INFO] [stdout] 100 |             for (id, mut device) in destinations.into_iter().enumerate() {
[INFO] [stdout]     |                      ----^^^^^^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/verifier.rs:100:22
[INFO] [stdout]     |
[INFO] [stdout] 100 |             for (id, mut device) in destinations.into_iter().enumerate() {
[INFO] [stdout]     |                      ----^^^^^^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.73s
[INFO] running `Command { std: "docker" "inspect" "7fe02eacbba854fdedd913393843245df274060b0edc6cd7ce9f712156769b2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fe02eacbba854fdedd913393843245df274060b0edc6cd7ce9f712156769b2c", kill_on_drop: false }`
[INFO] [stdout] 7fe02eacbba854fdedd913393843245df274060b0edc6cd7ce9f712156769b2c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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=warn" "-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" "+beta-2021-08-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f046c73767b1bff894a82c748ffd519bd6b7e9fbcdf263c794c5a7f95c174866
[INFO] running `Command { std: "docker" "start" "-a" "f046c73767b1bff894a82c748ffd519bd6b7e9fbcdf263c794c5a7f95c174866", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]    Compiling bus_writer v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/writer.rs:100:22
[INFO] [stdout]     |
[INFO] [stdout] 100 |             for (id, mut device) in destinations.into_iter().enumerate() {
[INFO] [stdout]     |                      ----^^^^^^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/verifier.rs:100:22
[INFO] [stdout]     |
[INFO] [stdout] 100 |             for (id, mut device) in destinations.into_iter().enumerate() {
[INFO] [stdout]     |                      ----^^^^^^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 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]  --> tests/writer.rs:9:48
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let data: Vec<u8> = [0u8; 1024 * 1024 * 5].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] 9 |     let data: Vec<u8> = [0u8; 1024 * 1024 * 5].iter()
[INFO] [stdout]   |                                                ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let data: Vec<u8> = IntoIterator::into_iter([0u8; 1024 * 1024 * 5])
[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]   --> tests/writer.rs:10:37
[INFO] [stdout]    |
[INFO] [stdout] 10 |         .zip([1u8; 1024 * 1024 * 5].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] 10 |         .zip([1u8; 1024 * 1024 * 5].iter())
[INFO] [stdout]    |                                     ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 10 |         .zip(IntoIterator::into_iter([1u8; 1024 * 1024 * 5]))
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^                      ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufReader`
[INFO] [stdout]  --> examples/simple.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{BufReader, Cursor, Read};
[INFO] [stdout]   |               ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `File`
[INFO] [stdout]  --> examples/simple.rs:5:21
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::fs::{self, File};
[INFO] [stdout]   |                     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> examples/simple.rs:4:34
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{BufReader, Cursor, Read};
[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]  --> examples/simple.rs:9:48
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let data: Vec<u8> = [0u8; 1024 * 1024 * 5].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] 9 |     let data: Vec<u8> = [0u8; 1024 * 1024 * 5].iter()
[INFO] [stdout]   |                                                ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let data: Vec<u8> = IntoIterator::into_iter([0u8; 1024 * 1024 * 5])
[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]   --> examples/simple.rs:10:37
[INFO] [stdout]    |
[INFO] [stdout] 10 |         .zip([1u8; 1024 * 1024 * 5].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] 10 |         .zip([1u8; 1024 * 1024 * 5].iter())
[INFO] [stdout]    |                                     ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 10 |         .zip(IntoIterator::into_iter([1u8; 1024 * 1024 * 5]))
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^                      ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/writer.rs:100:22
[INFO] [stdout]     |
[INFO] [stdout] 100 |             for (id, mut device) in destinations.into_iter().enumerate() {
[INFO] [stdout]     |                      ----^^^^^^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/verifier.rs:100:22
[INFO] [stdout]     |
[INFO] [stdout] 100 |             for (id, mut device) in destinations.into_iter().enumerate() {
[INFO] [stdout]     |                      ----^^^^^^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 5.68s
[INFO] running `Command { std: "docker" "inspect" "f046c73767b1bff894a82c748ffd519bd6b7e9fbcdf263c794c5a7f95c174866", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f046c73767b1bff894a82c748ffd519bd6b7e9fbcdf263c794c5a7f95c174866", kill_on_drop: false }`
[INFO] [stdout] f046c73767b1bff894a82c748ffd519bd6b7e9fbcdf263c794c5a7f95c174866
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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=warn" "-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" "+beta-2021-08-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a446edf5cf2a0a2bdc94d933007e5755b5620036aa48bc90f6a642737fcf3507
[INFO] running `Command { std: "docker" "start" "-a" "a446edf5cf2a0a2bdc94d933007e5755b5620036aa48bc90f6a642737fcf3507", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/writer.rs:100:22
[INFO] [stderr]     |
[INFO] [stderr] 100 |             for (id, mut device) in destinations.into_iter().enumerate() {
[INFO] [stderr]     |                      ----^^^^^^
[INFO] [stderr]     |                      |
[INFO] [stderr]     |                      help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/verifier.rs:100:22
[INFO] [stderr]     |
[INFO] [stderr] 100 |             for (id, mut device) in destinations.into_iter().enumerate() {
[INFO] [stderr]     |                      ----^^^^^^
[INFO] [stderr]     |                      |
[INFO] [stderr]     |                      help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: `bus_writer` (lib) generated 2 warnings
[INFO] [stderr] warning: `bus_writer` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr] 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] [stderr]  --> tests/writer.rs:9:48
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let data: Vec<u8> = [0u8; 1024 * 1024 * 5].into_iter()
[INFO] [stderr]   |                                                ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(array_into_iter)]` on by default
[INFO] [stderr]   = warning: this changes meaning in Rust 2021
[INFO] [stderr]   = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stderr] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let data: Vec<u8> = [0u8; 1024 * 1024 * 5].iter()
[INFO] [stderr]   |                                                ^^^^
[INFO] [stderr] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let data: Vec<u8> = IntoIterator::into_iter([0u8; 1024 * 1024 * 5])
[INFO] [stderr]   |                         ^^^^^^^^^^^^^^^^^^^^^^^^                      ^
[INFO] [stderr] 
[INFO] [stderr] 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] [stderr]   --> tests/writer.rs:10:37
[INFO] [stderr]    |
[INFO] [stderr] 10 |         .zip([1u8; 1024 * 1024 * 5].into_iter())
[INFO] [stderr]    |                                     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this changes meaning in Rust 2021
[INFO] [stderr]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stderr] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stderr]    |
[INFO] [stderr] 10 |         .zip([1u8; 1024 * 1024 * 5].iter())
[INFO] [stderr]    |                                     ^^^^
[INFO] [stderr] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stderr]    |
[INFO] [stderr] 10 |         .zip(IntoIterator::into_iter([1u8; 1024 * 1024 * 5]))
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^                      ^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BufReader`
[INFO] [stderr]  --> examples/simple.rs:4:15
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::io::{BufReader, Cursor, Read};
[INFO] [stderr]   |               ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `File`
[INFO] [stderr]  --> examples/simple.rs:5:21
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::fs::{self, File};
[INFO] [stderr]   |                     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Read`
[INFO] [stderr]  --> examples/simple.rs:4:34
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::io::{BufReader, Cursor, Read};
[INFO] [stderr]   |                                  ^^^^
[INFO] [stderr] 
[INFO] [stderr] 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] [stderr]  --> examples/simple.rs:9:48
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let data: Vec<u8> = [0u8; 1024 * 1024 * 5].into_iter()
[INFO] [stderr]   |                                                ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(array_into_iter)]` on by default
[INFO] [stderr]   = warning: this changes meaning in Rust 2021
[INFO] [stderr]   = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stderr] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let data: Vec<u8> = [0u8; 1024 * 1024 * 5].iter()
[INFO] [stderr]   |                                                ^^^^
[INFO] [stderr] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let data: Vec<u8> = IntoIterator::into_iter([0u8; 1024 * 1024 * 5])
[INFO] [stderr]   |                         ^^^^^^^^^^^^^^^^^^^^^^^^                      ^
[INFO] [stderr] 
[INFO] [stderr] 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] [stderr]   --> examples/simple.rs:10:37
[INFO] [stderr]    |
[INFO] [stderr] 10 |         .zip([1u8; 1024 * 1024 * 5].into_iter())
[INFO] [stderr]    |                                     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this changes meaning in Rust 2021
[INFO] [stderr]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stderr] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stderr]    |
[INFO] [stderr] 10 |         .zip([1u8; 1024 * 1024 * 5].iter())
[INFO] [stderr]    |                                     ^^^^
[INFO] [stderr] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stderr]    |
[INFO] [stderr] 10 |         .zip(IntoIterator::into_iter([1u8; 1024 * 1024 * 5]))
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^                      ^
[INFO] [stderr] 
[INFO] [stderr] warning: `bus_writer` (test "writer") generated 2 warnings
[INFO] [stderr] warning: `bus_writer` (example "simple") generated 5 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/bus_writer-508cc3f4a2b318a1)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/writer.rs (/opt/rustwide/target/debug/deps/writer-fad1c9f9b5ca1a21)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]    Doc-tests bus_writer
[INFO] [stdout] test eight_local_files ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.60s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a446edf5cf2a0a2bdc94d933007e5755b5620036aa48bc90f6a642737fcf3507", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a446edf5cf2a0a2bdc94d933007e5755b5620036aa48bc90f6a642737fcf3507", kill_on_drop: false }`
[INFO] [stdout] a446edf5cf2a0a2bdc94d933007e5755b5620036aa48bc90f6a642737fcf3507
