[INFO] cloning repository https://github.com/shiro/jack-nerd-mixer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shiro/jack-nerd-mixer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshiro%2Fjack-nerd-mixer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshiro%2Fjack-nerd-mixer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 55de58eae4af735703e7d84f35befc0167a30eeb
[INFO] building shiro/jack-nerd-mixer against master#44f415c1d617ebc7b931a243b7b321ef8a6ca47c for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshiro%2Fjack-nerd-mixer" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/shiro/jack-nerd-mixer on toolchain 44f415c1d617ebc7b931a243b7b321ef8a6ca47c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/shiro/jack-nerd-mixer
[INFO] finished tweaking git repo https://github.com/shiro/jack-nerd-mixer
[INFO] tweaked toml for git repo https://github.com/shiro/jack-nerd-mixer written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/shiro/jack-nerd-mixer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/clap-rs/clap/`
[INFO] [stderr]     Updating git repository `https://github.com/RustAudio/rust-jack.git`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dbus v0.8.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c058e8ecbbe45eb856b81b8f66889167f4b57077234bb8de970e3190811384f8
[INFO] running `Command { std: "docker" "start" "-a" "c058e8ecbbe45eb856b81b8f66889167f4b57077234bb8de970e3190811384f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c058e8ecbbe45eb856b81b8f66889167f4b57077234bb8de970e3190811384f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c058e8ecbbe45eb856b81b8f66889167f4b57077234bb8de970e3190811384f8", kill_on_drop: false }`
[INFO] [stdout] c058e8ecbbe45eb856b81b8f66889167f4b57077234bb8de970e3190811384f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "RUSTDOCFLAGS=--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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4071fc22faa3541c5343cb22b2d323fa476b1c605073ec953ff6ea32015c23e8
[INFO] running `Command { std: "docker" "start" "-a" "4071fc22faa3541c5343cb22b2d323fa476b1c605073ec953ff6ea32015c23e8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]    Compiling libloading v0.4.3
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling unicode-width v0.1.7
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.12
[INFO] [stderr]    Compiling proc-macro-error v0.4.12
[INFO] [stderr]    Compiling indexmap v1.3.2
[INFO] [stderr]    Compiling libdbus-sys v0.2.1
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling jack-sys v0.2.0 (https://github.com/RustAudio/rust-jack.git#95a3b192)
[INFO] [stderr]    Compiling dbus v0.8.2
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling jack v0.6.2 (https://github.com/RustAudio/rust-jack.git#95a3b192)
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.1 (https://github.com/clap-rs/clap/#37889c66)
[INFO] [stderr]    Compiling clap v3.0.0-beta.1 (https://github.com/clap-rs/clap/#37889c66)
[INFO] [stderr]    Compiling jack-nerd-mixer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `dbus::channel::Channel`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use dbus::channel::Channel;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]   --> src/main.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | / fn connect_dbus(
[INFO] [stdout] 19 | |     dbus_path: &'static str,
[INFO] [stdout] 20 | |     app_state: Arc<Mutex<AppState>>,
[INFO] [stdout] 21 | |     args: clap::ArgMatches,
[INFO] [stdout] 22 | | ) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    | |_______________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: ReadAll` will fail
[INFO] [stdout]   --> src/main.rs:31:11
[INFO] [stdout]    |
[INFO] [stdout] 31 |     proxy.method_call(dbus_path, "Hello", ())?;
[INFO] [stdout]    |           ^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(dependency_on_unit_never_type_fallback)]` on by default
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]    |
[INFO] [stdout] 31 |     proxy.method_call::<(), _, _, _>(dbus_path, "Hello", ())?;
[INFO] [stdout]    |                      +++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `app_state`
[INFO] [stdout]   --> src/main.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     app_state: Arc<Mutex<AppState>>,
[INFO] [stdout]    |     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_app_state`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 24.92s
[INFO] running `Command { std: "docker" "inspect" "4071fc22faa3541c5343cb22b2d323fa476b1c605073ec953ff6ea32015c23e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4071fc22faa3541c5343cb22b2d323fa476b1c605073ec953ff6ea32015c23e8", kill_on_drop: false }`
[INFO] [stdout] 4071fc22faa3541c5343cb22b2d323fa476b1c605073ec953ff6ea32015c23e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "RUSTDOCFLAGS=--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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6eae8393cc341c3141ef9dadad5de422cd0215be35ae3a8f9e48dcb2a23f9974
[INFO] running `Command { std: "docker" "start" "-a" "6eae8393cc341c3141ef9dadad5de422cd0215be35ae3a8f9e48dcb2a23f9974", kill_on_drop: false }`
[INFO] [stderr]    Compiling jack-nerd-mixer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `dbus::channel::Channel`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use dbus::channel::Channel;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]   --> src/main.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | / fn connect_dbus(
[INFO] [stdout] 19 | |     dbus_path: &'static str,
[INFO] [stdout] 20 | |     app_state: Arc<Mutex<AppState>>,
[INFO] [stdout] 21 | |     args: clap::ArgMatches,
[INFO] [stdout] 22 | | ) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    | |_______________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: ReadAll` will fail
[INFO] [stdout]   --> src/main.rs:31:11
[INFO] [stdout]    |
[INFO] [stdout] 31 |     proxy.method_call(dbus_path, "Hello", ())?;
[INFO] [stdout]    |           ^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(dependency_on_unit_never_type_fallback)]` on by default
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]    |
[INFO] [stdout] 31 |     proxy.method_call::<(), _, _, _>(dbus_path, "Hello", ())?;
[INFO] [stdout]    |                      +++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `app_state`
[INFO] [stdout]   --> src/main.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     app_state: Arc<Mutex<AppState>>,
[INFO] [stdout]    |     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_app_state`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "6eae8393cc341c3141ef9dadad5de422cd0215be35ae3a8f9e48dcb2a23f9974", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6eae8393cc341c3141ef9dadad5de422cd0215be35ae3a8f9e48dcb2a23f9974", kill_on_drop: false }`
[INFO] [stdout] 6eae8393cc341c3141ef9dadad5de422cd0215be35ae3a8f9e48dcb2a23f9974