[INFO] fetching crate wildmidi 0.1.1...
[INFO] checking wildmidi-0.1.1 against master#43d9f3859e0204e764161ee085a360274b5f3e9a for pr-97346
[INFO] extracting crate wildmidi 0.1.1 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate wildmidi 0.1.1 on toolchain 43d9f3859e0204e764161ee085a360274b5f3e9a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+43d9f3859e0204e764161ee085a360274b5f3e9a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wildmidi 0.1.1
[INFO] finished tweaking crates.io crate wildmidi 0.1.1
[INFO] tweaked toml for crates.io crate wildmidi 0.1.1 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+43d9f3859e0204e764161ee085a360274b5f3e9a" "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" "+43d9f3859e0204e764161ee085a360274b5f3e9a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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 simple-error v0.1.12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+43d9f3859e0204e764161ee085a360274b5f3e9a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a7b4cbf3b452595d5cb2e5200c4c6d0e8af194026ddd78c2083955c1ea8cd740
[INFO] running `Command { std: "docker" "start" "-a" "a7b4cbf3b452595d5cb2e5200c4c6d0e8af194026ddd78c2083955c1ea8cd740", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a7b4cbf3b452595d5cb2e5200c4c6d0e8af194026ddd78c2083955c1ea8cd740", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7b4cbf3b452595d5cb2e5200c4c6d0e8af194026ddd78c2083955c1ea8cd740", kill_on_drop: false }`
[INFO] [stdout] a7b4cbf3b452595d5cb2e5200c4c6d0e8af194026ddd78c2083955c1ea8cd740
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+43d9f3859e0204e764161ee085a360274b5f3e9a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1adc76e8280c743c6803605cad7c02ea98c51919f979e219c372310525afb2f8
[INFO] running `Command { std: "docker" "start" "-a" "1adc76e8280c743c6803605cad7c02ea98c51919f979e219c372310525afb2f8", kill_on_drop: false }`
[INFO] [stderr]    Compiling wildmidi v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking simple-error v0.1.12
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:79:49
[INFO] [stdout]    |
[INFO] [stdout] 79 |     pub fn new(rate: u16) -> Result<Player, Box<Error>> {
[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] 79 -     pub fn new(rate: u16) -> Result<Player, Box<Error>> {
[INFO] [stdout] 79 +     pub fn new(rate: u16) -> Result<Player, Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:79:49
[INFO] [stdout]    |
[INFO] [stdout] 79 |     pub fn new(rate: u16) -> Result<Player, Box<Error>> {
[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] 79 -     pub fn new(rate: u16) -> Result<Player, Box<Error>> {
[INFO] [stdout] 79 +     pub fn new(rate: u16) -> Result<Player, Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:93:65
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub fn with_cfg(cfg: &str, rate: u16) -> Result<Player, Box<Error>> {
[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] 93 -     pub fn with_cfg(cfg: &str, rate: u16) -> Result<Player, Box<Error>> {
[INFO] [stdout] 93 +     pub fn with_cfg(cfg: &str, rate: u16) -> Result<Player, Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:93:65
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub fn with_cfg(cfg: &str, rate: u16) -> Result<Player, Box<Error>> {
[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] 93 -     pub fn with_cfg(cfg: &str, rate: u16) -> Result<Player, Box<Error>> {
[INFO] [stdout] 93 +     pub fn with_cfg(cfg: &str, rate: u16) -> Result<Player, Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:107:60
[INFO] [stdout]     |
[INFO] [stdout] 107 |     pub fn volume(&mut self, volume: u8) -> Result<(), Box<Error>> {
[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] 107 -     pub fn volume(&mut self, volume: u8) -> Result<(), Box<Error>> {
[INFO] [stdout] 107 +     pub fn volume(&mut self, volume: u8) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:107:60
[INFO] [stdout]     |
[INFO] [stdout] 107 |     pub fn volume(&mut self, volume: u8) -> Result<(), Box<Error>> {
[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] 107 -     pub fn volume(&mut self, volume: u8) -> Result<(), Box<Error>> {
[INFO] [stdout] 107 +     pub fn volume(&mut self, volume: u8) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:123:57
[INFO] [stdout]     |
[INFO] [stdout] 123 |     pub fn load(&self, data: &[u8]) -> Result<Midi, Box<Error>> {
[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] 123 -     pub fn load(&self, data: &[u8]) -> Result<Midi, Box<Error>> {
[INFO] [stdout] 123 +     pub fn load(&self, data: &[u8]) -> Result<Midi, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:123:57
[INFO] [stdout]     |
[INFO] [stdout] 123 |     pub fn load(&self, data: &[u8]) -> Result<Midi, Box<Error>> {
[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] 123 -     pub fn load(&self, data: &[u8]) -> Result<Midi, Box<Error>> {
[INFO] [stdout] 123 +     pub fn load(&self, data: &[u8]) -> Result<Midi, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:142:61
[INFO] [stdout]     |
[INFO] [stdout] 142 |     pub fn load_file(&self, path: &str) -> Result<Midi, Box<Error>> {
[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] 142 -     pub fn load_file(&self, path: &str) -> Result<Midi, Box<Error>> {
[INFO] [stdout] 142 +     pub fn load_file(&self, path: &str) -> Result<Midi, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:142:61
[INFO] [stdout]     |
[INFO] [stdout] 142 |     pub fn load_file(&self, path: &str) -> Result<Midi, Box<Error>> {
[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] 142 -     pub fn load_file(&self, path: &str) -> Result<Midi, Box<Error>> {
[INFO] [stdout] 142 +     pub fn load_file(&self, path: &str) -> Result<Midi, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.33s
[INFO] running `Command { std: "docker" "inspect" "1adc76e8280c743c6803605cad7c02ea98c51919f979e219c372310525afb2f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1adc76e8280c743c6803605cad7c02ea98c51919f979e219c372310525afb2f8", kill_on_drop: false }`
[INFO] [stdout] 1adc76e8280c743c6803605cad7c02ea98c51919f979e219c372310525afb2f8