[INFO] fetching crate bus_writer 0.1.2...
[INFO] testing bus_writer-0.1.2 against beta-2020-10-09 for beta-1.48-1
[INFO] extracting crate bus_writer 0.1.2 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate bus_writer 0.1.2 on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", 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-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bus v2.2.3
[INFO] [stderr]   Downloaded crossbeam v0.3.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 41e74f57b858cd12ec8c53fc828272866d8f56ba4704b183321c46a0ba2d070d
[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" "41e74f57b858cd12ec8c53fc828272866d8f56ba4704b183321c46a0ba2d070d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "41e74f57b858cd12ec8c53fc828272866d8f56ba4704b183321c46a0ba2d070d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41e74f57b858cd12ec8c53fc828272866d8f56ba4704b183321c46a0ba2d070d", kill_on_drop: false }`
[INFO] [stdout] 41e74f57b858cd12ec8c53fc828272866d8f56ba4704b183321c46a0ba2d070d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "build" "--frozen" "--message-format=json", 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] 2b8a17fc1c52c94c702e0013ddd468f1ec786d26cedbe42aaf38e68da1128f65
[INFO] running `Command { std: "docker" "start" "-a" "2b8a17fc1c52c94c702e0013ddd468f1ec786d26cedbe42aaf38e68da1128f65", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]    Compiling crossbeam v0.3.2
[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 1.39s
[INFO] running `Command { std: "docker" "inspect" "2b8a17fc1c52c94c702e0013ddd468f1ec786d26cedbe42aaf38e68da1128f65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b8a17fc1c52c94c702e0013ddd468f1ec786d26cedbe42aaf38e68da1128f65", kill_on_drop: false }`
[INFO] [stdout] 2b8a17fc1c52c94c702e0013ddd468f1ec786d26cedbe42aaf38e68da1128f65
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f48a61b96a8707030fdf39e27f06c8d5c8e50749114f23279a1f3d2895daab62
[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" "f48a61b96a8707030fdf39e27f06c8d5c8e50749114f23279a1f3d2895daab62", 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: 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 currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stdout]  --> examples/simple.rs:9:48
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let data: Vec<u8> = [0u8; 1024 * 1024 * 5].into_iter()
[INFO] [stdout]   |                                                ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]   = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stdout]   --> examples/simple.rs:10:37
[INFO] [stdout]    |
[INFO] [stdout] 10 |         .zip([1u8; 1024 * 1024 * 5].into_iter())
[INFO] [stdout]    |                                     ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stdout]  --> tests/writer.rs:9:48
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let data: Vec<u8> = [0u8; 1024 * 1024 * 5].into_iter()
[INFO] [stdout]   |                                                ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]   = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stdout]   --> tests/writer.rs:10:37
[INFO] [stdout]    |
[INFO] [stdout] 10 |         .zip([1u8; 1024 * 1024 * 5].into_iter())
[INFO] [stdout]    |                                     ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[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: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 6.35s
[INFO] running `Command { std: "docker" "inspect" "f48a61b96a8707030fdf39e27f06c8d5c8e50749114f23279a1f3d2895daab62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f48a61b96a8707030fdf39e27f06c8d5c8e50749114f23279a1f3d2895daab62", kill_on_drop: false }`
[INFO] [stdout] f48a61b96a8707030fdf39e27f06c8d5c8e50749114f23279a1f3d2895daab62
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 07735f09fc848707e7b3385de923c58d2cbb3588f1c52bd1d5b93bc6a2eea4ac
[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" "07735f09fc848707e7b3385de923c58d2cbb3588f1c52bd1d5b93bc6a2eea4ac", 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/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: 2 warnings emitted
[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: 2 warnings emitted
[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 currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stderr]  --> examples/simple.rs:9:48
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let data: Vec<u8> = [0u8; 1024 * 1024 * 5].into_iter()
[INFO] [stderr]   |                                                ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(array_into_iter)]` on by default
[INFO] [stderr]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]   = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stderr] 
[INFO] [stderr] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stderr]   --> examples/simple.rs:10:37
[INFO] [stderr]    |
[INFO] [stderr] 10 |         .zip([1u8; 1024 * 1024 * 5].into_iter())
[INFO] [stderr]    |                                     ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stderr]  --> tests/writer.rs:9:48
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let data: Vec<u8> = [0u8; 1024 * 1024 * 5].into_iter()
[INFO] [stderr]   |                                                ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(array_into_iter)]` on by default
[INFO] [stderr]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]   = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stderr] 
[INFO] [stderr] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stderr]   --> tests/writer.rs:10:37
[INFO] [stderr]    |
[INFO] [stderr] 10 |         .zip([1u8; 1024 * 1024 * 5].into_iter())
[INFO] [stderr]    |                                     ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/bus_writer-4d1d7c1cddc9405d
[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
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/writer-262e2a2e3ba1e393
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] /tmp/b: 524288 bytes written
[INFO] [stdout] /tmp/b: 1048576 bytes written
[INFO] [stdout] /tmp/c: 524288 bytes written
[INFO] [stdout] /tmp/c: 1048576 bytes written
[INFO] [stdout] /tmp/a: 524288 bytes written
[INFO] [stdout] /tmp/g: 524288 bytes written
[INFO] [stdout] /tmp/a: 1048576 bytes written
[INFO] [stdout] /tmp/b: Completed
[INFO] [stdout] /tmp/c: Completed
[INFO] [stdout] /tmp/d: 524288 bytes written
[INFO] [stdout] /tmp/h: 524288 bytes written
[INFO] [stdout] /tmp/a: Completed
[INFO] [stdout] /tmp/h: 1048576 bytes written
[INFO] [stdout] /tmp/h: Completed
[INFO] [stdout] /tmp/d: 1048576 bytes written
[INFO] [stdout] /tmp/d: Completed
[INFO] [stdout] /tmp/g: 1048576 bytes written
[INFO] [stdout] /tmp/g: Completed
[INFO] [stdout] /tmp/f: 524288 bytes written
[INFO] [stdout] /tmp/e: 524288 bytes written
[INFO] [stdout] /tmp/e: 1048576 bytes written
[INFO] [stdout] /tmp/e: Completed
[INFO] [stdout] /tmp/f: 1048576 bytes written
[INFO] [stdout] /tmp/f: Completed
[INFO] [stdout] /tmp/d: 524288 bytes verified
[INFO] [stdout] /tmp/d: 1572864 bytes verified
[INFO] [stdout] /tmp/e: 524288 bytes verified
[INFO] [stdout] /tmp/e: 1572864 bytes verified
[INFO] [stdout] /tmp/c: 524288 bytes verified
[INFO] [stdout] /tmp/c: 1572864 bytes verified
[INFO] [stdout] /tmp/d: Validated
[INFO] [stdout] /tmp/b: 524288 bytes verified
[INFO] [stdout] /tmp/b: 1572864 bytes verified
[INFO] [stdout] /tmp/b: Validated
[INFO] [stdout] /tmp/e: Validated
[INFO] [stdout] /tmp/f: 524288 bytes verified
[INFO] [stdout] /tmp/f: 1572864 bytes verified
[INFO] [stdout] /tmp/f: Validated
[INFO] [stdout] /tmp/a: 524288 bytes verified
[INFO] [stdout] /tmp/g: 524288 bytes verified
[INFO] [stdout] /tmp/a: 1572864 bytes verified
[INFO] [stdout] /tmp/a: Validated
[INFO] [stdout] /tmp/g: 1572864 bytes verified
[INFO] [stdout] /tmp/g: Validated
[INFO] [stdout] /tmp/c: Validated
[INFO] [stdout] /tmp/h: 524288 bytes verified
[INFO] [stdout] /tmp/h: 1572864 bytes verified
[INFO] [stdout] /tmp/h: Validated
[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
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "07735f09fc848707e7b3385de923c58d2cbb3588f1c52bd1d5b93bc6a2eea4ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07735f09fc848707e7b3385de923c58d2cbb3588f1c52bd1d5b93bc6a2eea4ac", kill_on_drop: false }`
[INFO] [stdout] 07735f09fc848707e7b3385de923c58d2cbb3588f1c52bd1d5b93bc6a2eea4ac
