[INFO] cloning repository orlp/softsynth
[INFO] running `"git" "clone" "--bare" "git://github.com/orlp/softsynth.git" "work/cache/sources/gh/orlp/softsynth"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/orlp/softsynth'...
[INFO] running `"git" "clone" "work/cache/sources/gh/orlp/softsynth" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/orlp/softsynth"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/orlp/softsynth'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/orlp/softsynth" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/orlp/softsynth"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/orlp/softsynth'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8ed957f0485dda0e093173a3a386e9d457696e6f
[INFO] sha for GitHub repo orlp/softsynth: 8ed957f0485dda0e093173a3a386e9d457696e6f
[INFO] validating manifest of orlp/softsynth on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of orlp/softsynth on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing orlp/softsynth
[INFO] finished frobbing orlp/softsynth
[INFO] frobbed toml for orlp/softsynth written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/orlp/softsynth/Cargo.toml
[INFO] started frobbing orlp/softsynth
[INFO] finished frobbing orlp/softsynth
[INFO] frobbed toml for orlp/softsynth written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/orlp/softsynth/Cargo.toml
[INFO] crate orlp/softsynth already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking orlp/softsynth against try#8f81d0bf6baf07b92f1246696722485c4ca0b049 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-3/try#8f81d0bf6baf07b92f1246696722485c4ca0b049:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/orlp/softsynth:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 9566955f32b326cc64e29d5f5c2e947d572f3b7d3568d882082ddca33f38397e
[INFO] running `"docker" "start" "-a" "9566955f32b326cc64e29d5f5c2e947d572f3b7d3568d882082ddca33f38397e"`
[INFO] [stderr]    Compiling alsa-sys v0.1.1
[INFO] [stderr]     Checking alsa v0.2.0
[INFO] [stderr]     Checking cpal v0.8.1
[INFO] [stderr]     Checking midir v0.5.0
[INFO] [stderr]     Checking synth v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error: unknown macro variable `emeta`
[INFO] [stderr]    --> <::quick_error::quick_error macros>:109:13
[INFO] [stderr]     |
[INFO] [stderr] 109 | $ ( $ ( # [ $ emeta ] ) * => $ eitem $ ( ( $ ( $ etyp ) , * ) ) * ) * $ (
[INFO] [stderr]     |             ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(meta_variable_misuse)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: unknown macro variable `eitem`
[INFO] [stderr]    --> <::quick_error::quick_error macros>:109:30
[INFO] [stderr]     |
[INFO] [stderr] 109 | $ ( $ ( # [ $ emeta ] ) * => $ eitem $ ( ( $ ( $ etyp ) , * ) ) * ) * $ (
[INFO] [stderr]     |                              ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: unknown macro variable `etyp`
[INFO] [stderr]    --> <::quick_error::quick_error macros>:109:48
[INFO] [stderr]     |
[INFO] [stderr] 109 | $ ( $ ( # [ $ emeta ] ) * => $ eitem $ ( ( $ ( $ etyp ) , * ) ) * ) * $ (
[INFO] [stderr]     |                                                ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::quick_error::quick_error macros>:126:48
[INFO] [stderr]     |
[INFO] [stderr] 120 | ( $ ( $ qvar : ident : $ qtyp : ty ) , + ) $ ( $ tail : tt ) * ] ) => {
[INFO] [stderr]     |                                        - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 126 | $ ( # [ $ bmeta ] ) * => $ bitem : TUPLE [ $ ( $ qvar : $ qtyp ) , * ] ] queue
[INFO] [stderr]     |                                                ^^^^^^              - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::quick_error::quick_error macros>:126:57
[INFO] [stderr]     |
[INFO] [stderr] 120 | ( $ ( $ qvar : ident : $ qtyp : ty ) , + ) $ ( $ tail : tt ) * ] ) => {
[INFO] [stderr]     |                                        - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 126 | $ ( # [ $ bmeta ] ) * => $ bitem : TUPLE [ $ ( $ qvar : $ qtyp ) , * ] ] queue
[INFO] [stderr]     |                                                         ^^^^^^     - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::quick_error::quick_error macros>:139:49
[INFO] [stderr]     |
[INFO] [stderr] 133 | { $ ( $ qvar : ident : $ qtyp : ty ) , + } $ ( $ tail : tt ) * ] ) => {
[INFO] [stderr]     |                                        - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 139 | $ ( # [ $ bmeta ] ) * => $ bitem : STRUCT [ $ ( $ qvar : $ qtyp ) , * ] ]
[INFO] [stderr]     |                                                 ^^^^^^              - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::quick_error::quick_error macros>:139:58
[INFO] [stderr]     |
[INFO] [stderr] 133 | { $ ( $ qvar : ident : $ qtyp : ty ) , + } $ ( $ tail : tt ) * ] ) => {
[INFO] [stderr]     |                                        - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 139 | $ ( # [ $ bmeta ] ) * => $ bitem : STRUCT [ $ ( $ qvar : $ qtyp ) , * ] ]
[INFO] [stderr]     |                                                          ^^^^^^     - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::quick_error::quick_error macros>:152:49
[INFO] [stderr]     |
[INFO] [stderr] 146 | { $ ( $ qvar : ident : $ qtyp : ty ) , + , } $ ( $ tail : tt ) * ] ) => {
[INFO] [stderr]     |                                        - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 152 | $ ( # [ $ bmeta ] ) * => $ bitem : STRUCT [ $ ( $ qvar : $ qtyp ) , * ] ]
[INFO] [stderr]     |                                                 ^^^^^^              - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::quick_error::quick_error macros>:152:58
[INFO] [stderr]     |
[INFO] [stderr] 146 | { $ ( $ qvar : ident : $ qtyp : ty ) , + , } $ ( $ tail : tt ) * ] ) => {
[INFO] [stderr]     |                                        - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 152 | $ ( # [ $ bmeta ] ) * => $ bitem : STRUCT [ $ ( $ qvar : $ qtyp ) , * ] ]
[INFO] [stderr]     |                                                          ^^^^^^     - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::quick_error::quick_error macros>:202:41
[INFO] [stderr]     |
[INFO] [stderr] 197 | $ ( ( $ ( $ ttyp : ty ) , + ) ) * ) {
[INFO] [stderr]     |                           - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 202 | $ ( # [ $ imeta ] ) * $ iitem $ ( ( $ ( $ ttyp ) , * ) ) * $ (
[INFO] [stderr]     |                                         ^^^^^^     - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::quick_error::quick_error macros>:212:41
[INFO] [stderr]     |
[INFO] [stderr] 207 | $ ( ( $ ( $ ttyp : ty ) , + ) ) * ) {
[INFO] [stderr]     |                           - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 212 | $ ( # [ $ imeta ] ) * $ iitem $ ( ( $ ( $ ttyp ) , * ) ) * $ (
[INFO] [stderr]     |                                         ^^^^^^     - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::quick_error::quick_error macros>:239:7
[INFO] [stderr]     |
[INFO] [stderr] 233 | $ ( $ qvar : ident : $ qtyp : ty ) , + ] $ ( $ queue : tt ) * ] ) => {
[INFO] [stderr]     |                                      - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 239 | ( $ ( $ qtyp ) , * ) ) {  } ] queue [ $ ( $ queue ) * ] ) ; } ; (
[INFO] [stderr]     |       ^^^^^^     - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/midi.rs:13:53
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub fn get_input_ports() -> Result<Vec<String>, Box<Error>> {
[INFO] [stderr]    |                                                     ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/midi.rs:22:76
[INFO] [stderr]    |
[INFO] [stderr] 22 | ) -> Result<midir::MidiInputConnection<mpsc::SyncSender<MidiMessage>>, Box<Error>> {
[INFO] [stderr]    |                                                                            ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::f64::consts`
[INFO] [stderr]  --> src/synth.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::f64::consts;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/synth_controller.rs:12:20
[INFO] [stderr]    |
[INFO] [stderr] 12 |     NoteOn(u8, Box<Synth>),
[INFO] [stderr]    |                    ^^^^^ help: use `dyn`: `dyn Synth`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/synth_controller.rs:18:16
[INFO] [stderr]    |
[INFO] [stderr] 18 |     synth: Box<Synth>,
[INFO] [stderr]    |                ^^^^^ help: use `dyn`: `dyn Synth`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/synth_controller.rs:26:37
[INFO] [stderr]    |
[INFO] [stderr] 26 |     out_synth: mpsc::SyncSender<Box<Synth>>,
[INFO] [stderr]    |                                     ^^^^^ help: use `dyn`: `dyn Synth`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/synth_controller.rs:33:41
[INFO] [stderr]    |
[INFO] [stderr] 33 |         out_synth: mpsc::SyncSender<Box<Synth>>,
[INFO] [stderr]    |                                         ^^^^^ help: use `dyn`: `dyn Synth`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:22:30
[INFO] [stderr]    |
[INFO] [stderr] 22 | fn usage() -> Result<(), Box<Error>> {
[INFO] [stderr]    |                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:35:28
[INFO] [stderr]    |
[INFO] [stderr] 35 | fn run() -> Result<(), Box<Error>> {
[INFO] [stderr]    |                            ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:170:33
[INFO] [stderr]     |
[INFO] [stderr] 170 | fn main_synth(freq: f64) -> Box<synth::Synth> {
[INFO] [stderr]     |                                 ^^^^^^^^^^^^ help: use `dyn`: `dyn synth::Synth`
[INFO] [stderr] 
[INFO] [stderr] error: unknown macro variable `emeta`
[INFO] [stderr]    --> <::quick_error::quick_error macros>:109:13
[INFO] [stderr]     |
[INFO] [stderr] 109 | $ ( $ ( # [ $ emeta ] ) * => $ eitem $ ( ( $ ( $ etyp ) , * ) ) * ) * $ (
[INFO] [stderr]     |             ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(meta_variable_misuse)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: unknown macro variable `eitem`
[INFO] [stderr]    --> <::quick_error::quick_error macros>:109:30
[INFO] [stderr]     |
[INFO] [stderr] 109 | $ ( $ ( # [ $ emeta ] ) * => $ eitem $ ( ( $ ( $ etyp ) , * ) ) * ) * $ (
[INFO] [stderr]     |                              ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: unknown macro variable `etyp`
[INFO] [stderr]    --> <::quick_error::quick_error macros>:109:48
[INFO] [stderr]     |
[INFO] [stderr] 109 | $ ( $ ( # [ $ emeta ] ) * => $ eitem $ ( ( $ ( $ etyp ) , * ) ) * ) * $ (
[INFO] [stderr]     |                                                ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::quick_error::quick_error macros>:126:48
[INFO] [stderr]     |
[INFO] [stderr] 120 | ( $ ( $ qvar : ident : $ qtyp : ty ) , + ) $ ( $ tail : tt ) * ] ) => {
[INFO] [stderr]     |                                        - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 126 | $ ( # [ $ bmeta ] ) * => $ bitem : TUPLE [ $ ( $ qvar : $ qtyp ) , * ] ] queue
[INFO] [stderr]     |                                                ^^^^^^              - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::quick_error::quick_error macros>:126:57
[INFO] [stderr]     |
[INFO] [stderr] 120 | ( $ ( $ qvar : ident : $ qtyp : ty ) , + ) $ ( $ tail : tt ) * ] ) => {
[INFO] [stderr]     |                                        - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 126 | $ ( # [ $ bmeta ] ) * => $ bitem : TUPLE [ $ ( $ qvar : $ qtyp ) , * ] ] queue
[INFO] [stderr]     |                                                         ^^^^^^     - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::quick_error::quick_error macros>:139:49
[INFO] [stderr]     |
[INFO] [stderr] 133 | { $ ( $ qvar : ident : $ qtyp : ty ) , + } $ ( $ tail : tt ) * ] ) => {
[INFO] [stderr]     |                                        - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 139 | $ ( # [ $ bmeta ] ) * => $ bitem : STRUCT [ $ ( $ qvar : $ qtyp ) , * ] ]
[INFO] [stderr]     |                                                 ^^^^^^              - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::quick_error::quick_error macros>:139:58
[INFO] [stderr]     |
[INFO] [stderr] 133 | { $ ( $ qvar : ident : $ qtyp : ty ) , + } $ ( $ tail : tt ) * ] ) => {
[INFO] [stderr]     |                                        - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 139 | $ ( # [ $ bmeta ] ) * => $ bitem : STRUCT [ $ ( $ qvar : $ qtyp ) , * ] ]
[INFO] [stderr]     |                                                          ^^^^^^     - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::quick_error::quick_error macros>:152:49
[INFO] [stderr]     |
[INFO] [stderr] 146 | { $ ( $ qvar : ident : $ qtyp : ty ) , + , } $ ( $ tail : tt ) * ] ) => {
[INFO] [stderr]     |                                        - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 152 | $ ( # [ $ bmeta ] ) * => $ bitem : STRUCT [ $ ( $ qvar : $ qtyp ) , * ] ]
[INFO] [stderr]     |                                                 ^^^^^^              - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::quick_error::quick_error macros>:152:58
[INFO] [stderr]     |
[INFO] [stderr] 146 | { $ ( $ qvar : ident : $ qtyp : ty ) , + , } $ ( $ tail : tt ) * ] ) => {
[INFO] [stderr]     |                                        - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 152 | $ ( # [ $ bmeta ] ) * => $ bitem : STRUCT [ $ ( $ qvar : $ qtyp ) , * ] ]
[INFO] [stderr]     |                                                          ^^^^^^     - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::quick_error::quick_error macros>:202:41
[INFO] [stderr]     |
[INFO] [stderr] 197 | $ ( ( $ ( $ ttyp : ty ) , + ) ) * ) {
[INFO] [stderr]     |                           - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 202 | $ ( # [ $ imeta ] ) * $ iitem $ ( ( $ ( $ ttyp ) , * ) ) * $ (
[INFO] [stderr]     |                                         ^^^^^^     - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::quick_error::quick_error macros>:212:41
[INFO] [stderr]     |
[INFO] [stderr] 207 | $ ( ( $ ( $ ttyp : ty ) , + ) ) * ) {
[INFO] [stderr]     |                           - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 212 | $ ( # [ $ imeta ] ) * $ iitem $ ( ( $ ( $ ttyp ) , * ) ) * $ (
[INFO] [stderr]     |                                         ^^^^^^     - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::quick_error::quick_error macros>:239:7
[INFO] [stderr]     |
[INFO] [stderr] 233 | $ ( $ qvar : ident : $ qtyp : ty ) , + ] $ ( $ queue : tt ) * ] ) => {
[INFO] [stderr]     |                                      - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 239 | ( $ ( $ qtyp ) , * ) ) {  } ] queue [ $ ( $ queue ) * ] ) ; } ; (
[INFO] [stderr]     |       ^^^^^^     - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/midi.rs:13:53
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub fn get_input_ports() -> Result<Vec<String>, Box<Error>> {
[INFO] [stderr]    |                                                     ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/midi.rs:22:76
[INFO] [stderr]    |
[INFO] [stderr] 22 | ) -> Result<midir::MidiInputConnection<mpsc::SyncSender<MidiMessage>>, Box<Error>> {
[INFO] [stderr]    |                                                                            ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::f64::consts`
[INFO] [stderr]  --> src/synth.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::f64::consts;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/synth_controller.rs:12:20
[INFO] [stderr]    |
[INFO] [stderr] 12 |     NoteOn(u8, Box<Synth>),
[INFO] [stderr]    |                    ^^^^^ help: use `dyn`: `dyn Synth`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/synth_controller.rs:18:16
[INFO] [stderr]    |
[INFO] [stderr] 18 |     synth: Box<Synth>,
[INFO] [stderr]    |                ^^^^^ help: use `dyn`: `dyn Synth`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/synth_controller.rs:26:37
[INFO] [stderr]    |
[INFO] [stderr] 26 |     out_synth: mpsc::SyncSender<Box<Synth>>,
[INFO] [stderr]    |                                     ^^^^^ help: use `dyn`: `dyn Synth`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/synth_controller.rs:33:41
[INFO] [stderr]    |
[INFO] [stderr] 33 |         out_synth: mpsc::SyncSender<Box<Synth>>,
[INFO] [stderr]    |                                         ^^^^^ help: use `dyn`: `dyn Synth`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:22:30
[INFO] [stderr]    |
[INFO] [stderr] 22 | fn usage() -> Result<(), Box<Error>> {
[INFO] [stderr]    |                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:35:28
[INFO] [stderr]    |
[INFO] [stderr] 35 | fn run() -> Result<(), Box<Error>> {
[INFO] [stderr]    |                            ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:170:33
[INFO] [stderr]     |
[INFO] [stderr] 170 | fn main_synth(freq: f64) -> Box<synth::Synth> {
[INFO] [stderr]     |                                 ^^^^^^^^^^^^ help: use `dyn`: `dyn synth::Synth`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 12 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `synth`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: aborting due to 12 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `synth`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "9566955f32b326cc64e29d5f5c2e947d572f3b7d3568d882082ddca33f38397e"`
[INFO] running `"docker" "rm" "-f" "9566955f32b326cc64e29d5f5c2e947d572f3b7d3568d882082ddca33f38397e"`
[INFO] [stdout] 9566955f32b326cc64e29d5f5c2e947d572f3b7d3568d882082ddca33f38397e