[INFO] cloning repository https://github.com/euwbah/thirty_one_from_twelve
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/euwbah/thirty_one_from_twelve" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feuwbah%2Fthirty_one_from_twelve", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feuwbah%2Fthirty_one_from_twelve'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 31385dda617fa8488178ae8ed7e8035b96770c9f
[INFO] checking euwbah/thirty_one_from_twelve against master#af3c6e733a40e671550e0f0f5aeecaa13772ba56 for pr-74989
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feuwbah%2Fthirty_one_from_twelve" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/euwbah/thirty_one_from_twelve on toolchain af3c6e733a40e671550e0f0f5aeecaa13772ba56
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/euwbah/thirty_one_from_twelve
[INFO] finished tweaking git repo https://github.com/euwbah/thirty_one_from_twelve
[INFO] tweaked toml for git repo https://github.com/euwbah/thirty_one_from_twelve written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/euwbah/thirty_one_from_twelve already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cab99b1668c9507e10daa161684b3219018d032bcc31ff0244f051818ffa6239
[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" "cab99b1668c9507e10daa161684b3219018d032bcc31ff0244f051818ffa6239", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cab99b1668c9507e10daa161684b3219018d032bcc31ff0244f051818ffa6239", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cab99b1668c9507e10daa161684b3219018d032bcc31ff0244f051818ffa6239", kill_on_drop: false }`
[INFO] [stdout] cab99b1668c9507e10daa161684b3219018d032bcc31ff0244f051818ffa6239
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-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" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "check" "--frozen" "--all" "--all-targets" "--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] 613a20ceae0808b5e60ddec86a07516dcbca008c15e432b65eb3dac8688f511a
[INFO] running `Command { std: "docker" "start" "-a" "613a20ceae0808b5e60ddec86a07516dcbca008c15e432b65eb3dac8688f511a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking memalloc v0.1.0
[INFO] [stderr]     Checking miniz_oxide v0.4.1
[INFO] [stderr]     Checking crossbeam-utils v0.7.2
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking crossbeam-channel v0.4.3
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking alsa-sys v0.1.2
[INFO] [stderr]     Checking nix v0.9.0
[INFO] [stderr]     Checking backtrace v0.3.50
[INFO] [stderr]     Checking rayon-core v1.8.0
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking rayon v1.4.0
[INFO] [stderr]     Checking alsa v0.2.2
[INFO] [stderr]     Checking midir v0.6.2
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking midly v0.4.0
[INFO] [stderr]     Checking thirty_one_from_twelve v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Note`, `Pitch31`
[INFO] [stdout]  --> src/processor.rs:6:21
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::theory::{Note, Pitch31};
[INFO] [stdout]   |                     ^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TSPitch`
[INFO] [stdout]  --> src/processor.rs:8:26
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::tonal_space::{TSPitch, TonalSpace};
[INFO] [stdout]   |                          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RemAssign`
[INFO] [stdout]  --> src/theory.rs:4:21
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ops::{Add, RemAssign};
[INFO] [stdout]   |                     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `lazy_static::lazy_static`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use lazy_static::lazy_static;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Note`, `Pitch31`
[INFO] [stdout]  --> src/processor.rs:6:21
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::theory::{Note, Pitch31};
[INFO] [stdout]   |                     ^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TSPitch`
[INFO] [stdout]  --> src/processor.rs:8:26
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::tonal_space::{TSPitch, TonalSpace};
[INFO] [stdout]   |                          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RemAssign`
[INFO] [stdout]  --> src/theory.rs:4:21
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ops::{Add, RemAssign};
[INFO] [stdout]   |                     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `lazy_static::lazy_static`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use lazy_static::lazy_static;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `active_notes`
[INFO] [stdout]   --> src/processor.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let mut active_notes: HashMap<u7, ActiveNote> = HashMap::new();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_active_notes`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `channel`
[INFO] [stdout]   --> src/processor.rs:38:33
[INFO] [stdout]    |
[INFO] [stdout] 38 |         if let EventKind::Midi {channel, message} = ev {
[INFO] [stdout]    |                                 ^^^^^^^ help: try ignoring the field: `channel: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/processor.rs:43:39
[INFO] [stdout]    |
[INFO] [stdout] 43 |                 MidiMessage::NoteOff {key, vel} => {
[INFO] [stdout]    |                                       ^^^ help: try ignoring the field: `key: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vel`
[INFO] [stdout]   --> src/processor.rs:43:44
[INFO] [stdout]    |
[INFO] [stdout] 43 |                 MidiMessage::NoteOff {key, vel} => {
[INFO] [stdout]    |                                            ^^^ help: try ignoring the field: `vel: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `controller`
[INFO] [stdout]   --> src/processor.rs:46:42
[INFO] [stdout]    |
[INFO] [stdout] 46 |                 MidiMessage::Controller {controller, value} => {
[INFO] [stdout]    |                                          ^^^^^^^^^^ help: try ignoring the field: `controller: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/processor.rs:46:54
[INFO] [stdout]    |
[INFO] [stdout] 46 |                 MidiMessage::Controller {controller, value} => {
[INFO] [stdout]    |                                                      ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/processor.rs:55:22
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn convert_to_31(key: u7, vel: u7, tonal_space: &mut TonalSpace) {
[INFO] [stdout]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vel`
[INFO] [stdout]   --> src/processor.rs:55:31
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn convert_to_31(key: u7, vel: u7, tonal_space: &mut TonalSpace) {
[INFO] [stdout]    |                               ^^^ help: if this is intentional, prefix it with an underscore: `_vel`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tonal_space`
[INFO] [stdout]   --> src/processor.rs:55:40
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn convert_to_31(key: u7, vel: u7, tonal_space: &mut TonalSpace) {
[INFO] [stdout]    |                                        ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tonal_space`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:52:76
[INFO] [stdout]    |
[INFO] [stdout] 52 |     let _conn_in = midi_in.connect(&in_port, "midir-forward", move |stamp, mut message, _| {
[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/processor.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let mut active_notes: HashMap<u7, ActiveNote> = HashMap::new();
[INFO] [stdout]    |         ----^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/processor.rs:25:20
[INFO] [stdout]    |
[INFO] [stdout] 25 |     while let Some(mut raw) = rx.recv().unwrap() {
[INFO] [stdout]    |                    ----^^^
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `active_notes`
[INFO] [stdout]   --> src/processor.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let mut active_notes: HashMap<u7, ActiveNote> = HashMap::new();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_active_notes`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `channel`
[INFO] [stdout]   --> src/processor.rs:38:33
[INFO] [stdout]    |
[INFO] [stdout] 38 |         if let EventKind::Midi {channel, message} = ev {
[INFO] [stdout]    |                                 ^^^^^^^ help: try ignoring the field: `channel: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/processor.rs:43:39
[INFO] [stdout]    |
[INFO] [stdout] 43 |                 MidiMessage::NoteOff {key, vel} => {
[INFO] [stdout]    |                                       ^^^ help: try ignoring the field: `key: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vel`
[INFO] [stdout]   --> src/processor.rs:43:44
[INFO] [stdout]    |
[INFO] [stdout] 43 |                 MidiMessage::NoteOff {key, vel} => {
[INFO] [stdout]    |                                            ^^^ help: try ignoring the field: `vel: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `controller`
[INFO] [stdout]   --> src/processor.rs:46:42
[INFO] [stdout]    |
[INFO] [stdout] 46 |                 MidiMessage::Controller {controller, value} => {
[INFO] [stdout]    |                                          ^^^^^^^^^^ help: try ignoring the field: `controller: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/processor.rs:46:54
[INFO] [stdout]    |
[INFO] [stdout] 46 |                 MidiMessage::Controller {controller, value} => {
[INFO] [stdout]    |                                                      ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/processor.rs:55:22
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn convert_to_31(key: u7, vel: u7, tonal_space: &mut TonalSpace) {
[INFO] [stdout]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vel`
[INFO] [stdout]   --> src/processor.rs:55:31
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn convert_to_31(key: u7, vel: u7, tonal_space: &mut TonalSpace) {
[INFO] [stdout]    |                               ^^^ help: if this is intentional, prefix it with an underscore: `_vel`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tonal_space`
[INFO] [stdout]   --> src/processor.rs:55:40
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn convert_to_31(key: u7, vel: u7, tonal_space: &mut TonalSpace) {
[INFO] [stdout]    |                                        ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tonal_space`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0716]: temporary value dropped while borrowed
[INFO] [stdout]   --> src/theory.rs:92:28
[INFO] [stdout]    |
[INFO] [stdout] 92 |                 let note = capts.name("note").unwrap().as_str().to_lowercase().as_str();
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^         - temporary value is freed at the end of this statement
[INFO] [stdout]    |                            |
[INFO] [stdout]    |                            creates a temporary which is freed while still in use
[INFO] [stdout] ...
[INFO] [stdout] 97 |                         match note {
[INFO] [stdout]    |                               ---- borrow later used here
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using a `let` binding to create a longer lived value
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:52:76
[INFO] [stdout]    |
[INFO] [stdout] 52 |     let _conn_in = midi_in.connect(&in_port, "midir-forward", move |stamp, mut message, _| {
[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/processor.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let mut active_notes: HashMap<u7, ActiveNote> = HashMap::new();
[INFO] [stdout]    |         ----^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/processor.rs:25:20
[INFO] [stdout]    |
[INFO] [stdout] 25 |     while let Some(mut raw) = rx.recv().unwrap() {
[INFO] [stdout]    |                    ----^^^
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0716]: temporary value dropped while borrowed
[INFO] [stdout]   --> src/theory.rs:92:28
[INFO] [stdout]    |
[INFO] [stdout] 92 |                 let note = capts.name("note").unwrap().as_str().to_lowercase().as_str();
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^         - temporary value is freed at the end of this statement
[INFO] [stdout]    |                            |
[INFO] [stdout]    |                            creates a temporary which is freed while still in use
[INFO] [stdout] ...
[INFO] [stdout] 97 |                         match note {
[INFO] [stdout]    |                               ---- borrow later used here
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using a `let` binding to create a longer lived value
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `thirty_one_from_twelve`.
[INFO] [stdout] error: aborting due to previous error; 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0716`.
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stdout] For more information about this error, try `rustc --explain E0716`.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "613a20ceae0808b5e60ddec86a07516dcbca008c15e432b65eb3dac8688f511a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "613a20ceae0808b5e60ddec86a07516dcbca008c15e432b65eb3dac8688f511a", kill_on_drop: false }`
[INFO] [stdout] 613a20ceae0808b5e60ddec86a07516dcbca008c15e432b65eb3dac8688f511a
