[INFO] cloning repository https://github.com/monsieursquirrel/every_beat
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/monsieursquirrel/every_beat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmonsieursquirrel%2Fevery_beat", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmonsieursquirrel%2Fevery_beat'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3f349e36eee58bd6e15f0d2c5f35a96459cb1930
[INFO] testing monsieursquirrel/every_beat against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmonsieursquirrel%2Fevery_beat" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/monsieursquirrel/every_beat on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/monsieursquirrel/every_beat
[INFO] finished tweaking git repo https://github.com/monsieursquirrel/every_beat
[INFO] tweaked toml for git repo https://github.com/monsieursquirrel/every_beat written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/monsieursquirrel/every_beat already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4ba0d1bb1f48b5110d0f8fb21c710347d05c89607e32cedcd742bc7aaccfb643
[INFO] running `Command { std: "docker" "start" "-a" "4ba0d1bb1f48b5110d0f8fb21c710347d05c89607e32cedcd742bc7aaccfb643", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ba0d1bb1f48b5110d0f8fb21c710347d05c89607e32cedcd742bc7aaccfb643", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ba0d1bb1f48b5110d0f8fb21c710347d05c89607e32cedcd742bc7aaccfb643", kill_on_drop: false }`
[INFO] [stdout] 4ba0d1bb1f48b5110d0f8fb21c710347d05c89607e32cedcd742bc7aaccfb643
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8d36f1bdcca55e283b1ee4b6c761a0320a099646bc84c4d6b4b4743d8ae8c7f6
[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" "8d36f1bdcca55e283b1ee4b6c761a0320a099646bc84c4d6b4b4743d8ae8c7f6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling ansi_term v0.6.3
[INFO] [stderr]    Compiling strsim v0.4.0
[INFO] [stderr]    Compiling clap v1.2.0
[INFO] [stderr]    Compiling every_beat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/step_to_midi.rs:76:46
[INFO] [stdout]    |
[INFO] [stdout] 76 |     let track_len_location = file_data.len();;
[INFO] [stdout]    |                                              ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/midi_variable_len.rs:11:51
[INFO] [stdout]    |
[INFO] [stdout] 11 |     .map(|i| ((val >> (i * 7)) & 0x7f) as u8 | if (i == 0) { 0 } else { 0x80 } )
[INFO] [stdout]    |                                                   ^      ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 11 -     .map(|i| ((val >> (i * 7)) & 0x7f) as u8 | if (i == 0) { 0 } else { 0x80 } )
[INFO] [stdout] 11 +     .map(|i| ((val >> (i * 7)) & 0x7f) as u8 | if i == 0 { 0 } else { 0x80 } )
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SubCommand`
[INFO] [stdout]  --> src/main.rs:9:22
[INFO] [stdout]   |
[INFO] [stdout] 9 | use clap::{Arg, App, SubCommand};
[INFO] [stdout]   |                      ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/main.rs:55:14
[INFO] [stdout]    |
[INFO] [stdout] 55 |     for i in (0..num_bars) {
[INFO] [stdout]    |              ^           ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 55 -     for i in (0..num_bars) {
[INFO] [stdout] 55 +     for i in 0..num_bars {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/step_to_midi.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |     -> Box<Iterator<Item=u8> + 'a> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 13 -     -> Box<Iterator<Item=u8> + 'a> {
[INFO] [stdout] 13 +     -> Box<dyn Iterator<Item=u8> + 'a> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/patterns.rs:117:47
[INFO] [stdout]     |
[INFO] [stdout] 117 |     pub fn step_iterator<'a>(&'a self) -> Box<Iterator<Item=Vec<Note>> + 'a> {
[INFO] [stdout]     |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 117 -     pub fn step_iterator<'a>(&'a self) -> Box<Iterator<Item=Vec<Note>> + 'a> {
[INFO] [stdout] 117 +     pub fn step_iterator<'a>(&'a self) -> Box<dyn Iterator<Item=Vec<Note>> + 'a> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:63:5
[INFO] [stdout]    |
[INFO] [stdout] 63 | /     File::create(outfile)
[INFO] [stdout] 64 | |     .and_then(|mut file| file.write_all(&file_data[..]) );
[INFO] [stdout]    | |__________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.91s
[INFO] running `Command { std: "docker" "inspect" "8d36f1bdcca55e283b1ee4b6c761a0320a099646bc84c4d6b4b4743d8ae8c7f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d36f1bdcca55e283b1ee4b6c761a0320a099646bc84c4d6b4b4743d8ae8c7f6", kill_on_drop: false }`
[INFO] [stdout] 8d36f1bdcca55e283b1ee4b6c761a0320a099646bc84c4d6b4b4743d8ae8c7f6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] feaa7574b772752fc413b1701fddfe7f9c66ca323fb6aca65a826684bd1d893f
[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" "feaa7574b772752fc413b1701fddfe7f9c66ca323fb6aca65a826684bd1d893f", kill_on_drop: false }`
[INFO] [stderr]    Compiling every_beat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/step_to_midi.rs:76:46
[INFO] [stdout]    |
[INFO] [stdout] 76 |     let track_len_location = file_data.len();;
[INFO] [stdout]    |                                              ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/midi_variable_len.rs:11:51
[INFO] [stdout]    |
[INFO] [stdout] 11 |     .map(|i| ((val >> (i * 7)) & 0x7f) as u8 | if (i == 0) { 0 } else { 0x80 } )
[INFO] [stdout]    |                                                   ^      ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 11 -     .map(|i| ((val >> (i * 7)) & 0x7f) as u8 | if (i == 0) { 0 } else { 0x80 } )
[INFO] [stdout] 11 +     .map(|i| ((val >> (i * 7)) & 0x7f) as u8 | if i == 0 { 0 } else { 0x80 } )
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SubCommand`
[INFO] [stdout]  --> src/main.rs:9:22
[INFO] [stdout]   |
[INFO] [stdout] 9 | use clap::{Arg, App, SubCommand};
[INFO] [stdout]   |                      ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/main.rs:55:14
[INFO] [stdout]    |
[INFO] [stdout] 55 |     for i in (0..num_bars) {
[INFO] [stdout]    |              ^           ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 55 -     for i in (0..num_bars) {
[INFO] [stdout] 55 +     for i in 0..num_bars {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/step_to_midi.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |     -> Box<Iterator<Item=u8> + 'a> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 13 -     -> Box<Iterator<Item=u8> + 'a> {
[INFO] [stdout] 13 +     -> Box<dyn Iterator<Item=u8> + 'a> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/patterns.rs:117:47
[INFO] [stdout]     |
[INFO] [stdout] 117 |     pub fn step_iterator<'a>(&'a self) -> Box<Iterator<Item=Vec<Note>> + 'a> {
[INFO] [stdout]     |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 117 -     pub fn step_iterator<'a>(&'a self) -> Box<Iterator<Item=Vec<Note>> + 'a> {
[INFO] [stdout] 117 +     pub fn step_iterator<'a>(&'a self) -> Box<dyn Iterator<Item=Vec<Note>> + 'a> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:63:5
[INFO] [stdout]    |
[INFO] [stdout] 63 | /     File::create(outfile)
[INFO] [stdout] 64 | |     .and_then(|mut file| file.write_all(&file_data[..]) );
[INFO] [stdout]    | |__________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.14s
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "feaa7574b772752fc413b1701fddfe7f9c66ca323fb6aca65a826684bd1d893f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "feaa7574b772752fc413b1701fddfe7f9c66ca323fb6aca65a826684bd1d893f", kill_on_drop: false }`
[INFO] [stdout] feaa7574b772752fc413b1701fddfe7f9c66ca323fb6aca65a826684bd1d893f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 32029be810e1acb7b411f0c7ecf41b4220b3dd0380f4357a1c9812d383e47810
[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" "32029be810e1acb7b411f0c7ecf41b4220b3dd0380f4357a1c9812d383e47810", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stdout] running 1 test
[INFO] [stderr]   --> src/step_to_midi.rs:76:46
[INFO] [stdout] test midi_variable_len::sample_values ... ok
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 76 |     let track_len_location = file_data.len();;
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    |                                              ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/midi_variable_len.rs:11:51
[INFO] [stderr]    |
[INFO] [stderr] 11 |     .map(|i| ((val >> (i * 7)) & 0x7f) as u8 | if (i == 0) { 0 } else { 0x80 } )
[INFO] [stderr]    |                                                   ^      ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 11 -     .map(|i| ((val >> (i * 7)) & 0x7f) as u8 | if (i == 0) { 0 } else { 0x80 } )
[INFO] [stderr] 11 +     .map(|i| ((val >> (i * 7)) & 0x7f) as u8 | if i == 0 { 0 } else { 0x80 } )
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `SubCommand`
[INFO] [stderr]  --> src/main.rs:9:22
[INFO] [stderr]   |
[INFO] [stderr] 9 | use clap::{Arg, App, SubCommand};
[INFO] [stderr]   |                      ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]   --> src/main.rs:55:14
[INFO] [stderr]    |
[INFO] [stderr] 55 |     for i in (0..num_bars) {
[INFO] [stderr]    |              ^           ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 55 -     for i in (0..num_bars) {
[INFO] [stderr] 55 +     for i in 0..num_bars {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/step_to_midi.rs:13:12
[INFO] [stderr]    |
[INFO] [stderr] 13 |     -> Box<Iterator<Item=u8> + 'a> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 13 -     -> Box<Iterator<Item=u8> + 'a> {
[INFO] [stderr] 13 +     -> Box<dyn Iterator<Item=u8> + 'a> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/patterns.rs:117:47
[INFO] [stderr]     |
[INFO] [stderr] 117 |     pub fn step_iterator<'a>(&'a self) -> Box<Iterator<Item=Vec<Note>> + 'a> {
[INFO] [stderr]     |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 117 -     pub fn step_iterator<'a>(&'a self) -> Box<Iterator<Item=Vec<Note>> + 'a> {
[INFO] [stderr] 117 +     pub fn step_iterator<'a>(&'a self) -> Box<dyn Iterator<Item=Vec<Note>> + 'a> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/main.rs:63:5
[INFO] [stderr]    |
[INFO] [stderr] 63 | /     File::create(outfile)
[INFO] [stderr] 64 | |     .and_then(|mut file| file.write_all(&file_data[..]) );
[INFO] [stderr]    | |__________________________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: `every_beat` (bin "every_beat" test) generated 7 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/every_beat-6cde92aee7120639)
[INFO] running `Command { std: "docker" "inspect" "32029be810e1acb7b411f0c7ecf41b4220b3dd0380f4357a1c9812d383e47810", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32029be810e1acb7b411f0c7ecf41b4220b3dd0380f4357a1c9812d383e47810", kill_on_drop: false }`
[INFO] [stdout] 32029be810e1acb7b411f0c7ecf41b4220b3dd0380f4357a1c9812d383e47810