[INFO] cloning repository https://github.com/timjrd/wasm-spectrogram
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/timjrd/wasm-spectrogram" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftimjrd%2Fwasm-spectrogram", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftimjrd%2Fwasm-spectrogram'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 846eccbb049b55d725f2435611c5c9facfccf238
[INFO] testing timjrd/wasm-spectrogram against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftimjrd%2Fwasm-spectrogram" "/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/timjrd/wasm-spectrogram on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/timjrd/wasm-spectrogram
[INFO] finished tweaking git repo https://github.com/timjrd/wasm-spectrogram
[INFO] tweaked toml for git repo https://github.com/timjrd/wasm-spectrogram written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/timjrd/wasm-spectrogram already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustfft v3.0.0
[INFO] [stderr]   Downloaded strength_reduce v0.2.2
[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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d6b3eb056499face062b63e0ee2c78518a83fb3d4f241a883ae6d07dc226a909
[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" "d6b3eb056499face062b63e0ee2c78518a83fb3d4f241a883ae6d07dc226a909", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d6b3eb056499face062b63e0ee2c78518a83fb3d4f241a883ae6d07dc226a909", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6b3eb056499face062b63e0ee2c78518a83fb3d4f241a883ae6d07dc226a909", kill_on_drop: false }`
[INFO] [stdout] d6b3eb056499face062b63e0ee2c78518a83fb3d4f241a883ae6d07dc226a909
[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=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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9205b4bc1f429f1cd0501e49e87c9a6f4fee8c52d2ff038ef217e862fb6588a1
[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" "9205b4bc1f429f1cd0501e49e87c9a6f4fee8c52d2ff038ef217e862fb6588a1", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.8
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling anyhow v1.0.19
[INFO] [stderr]    Compiling wasm-bindgen v0.2.54
[INFO] [stderr]    Compiling sourcefile v0.1.4
[INFO] [stderr]    Compiling transpose v0.1.0
[INFO] [stderr]    Compiling strength_reduce v0.2.2
[INFO] [stderr]    Compiling num-traits v0.2.9
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling weedle v0.10.0
[INFO] [stderr]    Compiling rustfft v3.0.0
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.54
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.54
[INFO] [stderr]    Compiling wasm-bindgen-webidl v0.2.54
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.54
[INFO] [stderr]    Compiling web-sys v0.3.31
[INFO] [stderr]    Compiling js-sys v0.3.31
[INFO] [stderr]    Compiling console_error_panic_hook v0.1.6
[INFO] [stderr]    Compiling spectrogram v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/canvas.rs:76:43
[INFO] [stdout]     |
[INFO] [stdout] 62  | / pub fn start_rendering(args: Renderer) -> Result<(),Error> {
[INFO] [stdout] 63  | |   let renderer = Rc::new(RefCell::new(None));
[INFO] [stdout] 64  | |   
[INFO] [stdout] 65  | |   let on_frame = {
[INFO] [stdout] ...   |
[INFO] [stdout] 76  | |   let canvas: HtmlCanvasElement = window()?
[INFO] [stdout]     | |                                           ^ use `.ok_or(...)?` to provide an error compatible with `Result<(), error::Error>`
[INFO] [stdout] ...   |
[INFO] [stdout] 100 | |   Ok(())
[INFO] [stdout] 101 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<Option<Infallible>>` is not implemented for `Result<(), error::Error>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/canvas.rs:77:16
[INFO] [stdout]     |
[INFO] [stdout] 62  | / pub fn start_rendering(args: Renderer) -> Result<(),Error> {
[INFO] [stdout] 63  | |   let renderer = Rc::new(RefCell::new(None));
[INFO] [stdout] 64  | |   
[INFO] [stdout] 65  | |   let on_frame = {
[INFO] [stdout] ...   |
[INFO] [stdout] 77  | |     .document()?
[INFO] [stdout]     | |                ^ use `.ok_or(...)?` to provide an error compatible with `Result<(), error::Error>`
[INFO] [stdout] ...   |
[INFO] [stdout] 100 | |   Ok(())
[INFO] [stdout] 101 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<Option<Infallible>>` is not implemented for `Result<(), error::Error>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/canvas.rs:78:40
[INFO] [stdout]     |
[INFO] [stdout] 62  | / pub fn start_rendering(args: Renderer) -> Result<(),Error> {
[INFO] [stdout] 63  | |   let renderer = Rc::new(RefCell::new(None));
[INFO] [stdout] 64  | |   
[INFO] [stdout] 65  | |   let on_frame = {
[INFO] [stdout] ...   |
[INFO] [stdout] 78  | |     .get_element_by_id(&args.canvas_id)?
[INFO] [stdout]     | |                                        ^ use `.ok_or(...)?` to provide an error compatible with `Result<(), error::Error>`
[INFO] [stdout] ...   |
[INFO] [stdout] 100 | |   Ok(())
[INFO] [stdout] 101 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<Option<Infallible>>` is not implemented for `Result<(), error::Error>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/canvas.rs:82:24
[INFO] [stdout]     |
[INFO] [stdout] 62  | / pub fn start_rendering(args: Renderer) -> Result<(),Error> {
[INFO] [stdout] 63  | |   let renderer = Rc::new(RefCell::new(None));
[INFO] [stdout] 64  | |   
[INFO] [stdout] 65  | |   let on_frame = {
[INFO] [stdout] ...   |
[INFO] [stdout] 82  | |     .get_context("2d")??
[INFO] [stdout]     | |                        ^ use `.ok_or(...)?` to provide an error compatible with `Result<(), error::Error>`
[INFO] [stdout] ...   |
[INFO] [stdout] 100 | |   Ok(())
[INFO] [stdout] 101 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<Option<Infallible>>` is not implemented for `Result<(), error::Error>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/canvas.rs:89:11
[INFO] [stdout]     |
[INFO] [stdout] 62  | / pub fn start_rendering(args: Renderer) -> Result<(),Error> {
[INFO] [stdout] 63  | |   let renderer = Rc::new(RefCell::new(None));
[INFO] [stdout] 64  | |   
[INFO] [stdout] 65  | |   let on_frame = {
[INFO] [stdout] ...   |
[INFO] [stdout] 89  | |   window()?.request_animation_frame(
[INFO] [stdout]     | |           ^ use `.ok_or(...)?` to provide an error compatible with `Result<(), error::Error>`
[INFO] [stdout] ...   |
[INFO] [stdout] 100 | |   Ok(())
[INFO] [stdout] 101 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<Option<Infallible>>` is not implemented for `Result<(), error::Error>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/canvas.rs:90:32
[INFO] [stdout]     |
[INFO] [stdout] 62  | / pub fn start_rendering(args: Renderer) -> Result<(),Error> {
[INFO] [stdout] 63  | |   let renderer = Rc::new(RefCell::new(None));
[INFO] [stdout] 64  | |   
[INFO] [stdout] 65  | |   let on_frame = {
[INFO] [stdout] ...   |
[INFO] [stdout] 90  | |     on_frame.as_ref().dyn_ref()?
[INFO] [stdout]     | |                                ^ use `.ok_or(...)?` to provide an error compatible with `Result<(), error::Error>`
[INFO] [stdout] ...   |
[INFO] [stdout] 100 | |   Ok(())
[INFO] [stdout] 101 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<Option<Infallible>>` is not implemented for `Result<(), error::Error>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/canvas.rs:106:31
[INFO] [stdout]     |
[INFO] [stdout] 103 | / fn on_frame(renderer: &mut Renderer_) -> Result<(),Error> {
[INFO] [stdout] 104 | |   
[INFO] [stdout] 105 | |   let (width,height) = resize(
[INFO] [stdout] 106 | |     &renderer.context.canvas()?,
[INFO] [stdout]     | |                               ^ use `.ok_or(...)?` to provide an error compatible with `Result<(), error::Error>`
[INFO] [stdout] ...   |
[INFO] [stdout] 129 | |   Ok(())
[INFO] [stdout] 130 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<Option<Infallible>>` is not implemented for `Result<(), error::Error>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/canvas.rs:120:31
[INFO] [stdout]     |
[INFO] [stdout] 103 | / fn on_frame(renderer: &mut Renderer_) -> Result<(),Error> {
[INFO] [stdout] 104 | |   
[INFO] [stdout] 105 | |   let (width,height) = resize(
[INFO] [stdout] 106 | |     &renderer.context.canvas()?,
[INFO] [stdout] ...   |
[INFO] [stdout] 120 | |     &renderer.context.canvas()?, 0.0, -1.0
[INFO] [stdout]     | |                               ^ use `.ok_or(...)?` to provide an error compatible with `Result<(), error::Error>`
[INFO] [stdout] ...   |
[INFO] [stdout] 129 | |   Ok(())
[INFO] [stdout] 130 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<Option<Infallible>>` is not implemented for `Result<(), error::Error>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/canvas.rs:125:11
[INFO] [stdout]     |
[INFO] [stdout] 103 | / fn on_frame(renderer: &mut Renderer_) -> Result<(),Error> {
[INFO] [stdout] 104 | |   
[INFO] [stdout] 105 | |   let (width,height) = resize(
[INFO] [stdout] 106 | |     &renderer.context.canvas()?,
[INFO] [stdout] ...   |
[INFO] [stdout] 125 | |   window()?.request_animation_frame(
[INFO] [stdout]     | |           ^ use `.ok_or(...)?` to provide an error compatible with `Result<(), error::Error>`
[INFO] [stdout] ...   |
[INFO] [stdout] 129 | |   Ok(())
[INFO] [stdout] 130 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<Option<Infallible>>` is not implemented for `Result<(), error::Error>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/canvas.rs:126:41
[INFO] [stdout]     |
[INFO] [stdout] 103 | / fn on_frame(renderer: &mut Renderer_) -> Result<(),Error> {
[INFO] [stdout] 104 | |   
[INFO] [stdout] 105 | |   let (width,height) = resize(
[INFO] [stdout] 106 | |     &renderer.context.canvas()?,
[INFO] [stdout] ...   |
[INFO] [stdout] 126 | |     renderer.on_frame.as_ref().dyn_ref()?
[INFO] [stdout]     | |                                         ^ use `.ok_or(...)?` to provide an error compatible with `Result<(), error::Error>`
[INFO] [stdout] ...   |
[INFO] [stdout] 129 | |   Ok(())
[INFO] [stdout] 130 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<Option<Infallible>>` is not implemented for `Result<(), error::Error>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/audio.rs:101:63
[INFO] [stdout]     |
[INFO] [stdout] 64  | / pub fn start_processing(args: Processor) -> Result<(),Error> {
[INFO] [stdout] 65  | |   let processor = Rc::new(RefCell::new(None));
[INFO] [stdout] 66  | |   
[INFO] [stdout] 67  | |   let on_source = {
[INFO] [stdout] ...   |
[INFO] [stdout] 101 | |   proc_node.set_onaudioprocess(Some(on_proc.as_ref().dyn_ref()?));
[INFO] [stdout]     | |                                                               ^ use `.ok_or(...)?` to provide an error compatible with `Result<(), error::Error>`
[INFO] [stdout] ...   |
[INFO] [stdout] 124 | |   Ok(())
[INFO] [stdout] 125 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<Option<Infallible>>` is not implemented for `Result<(), error::Error>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/audio.rs:104:11
[INFO] [stdout]     |
[INFO] [stdout] 64  | / pub fn start_processing(args: Processor) -> Result<(),Error> {
[INFO] [stdout] 65  | |   let processor = Rc::new(RefCell::new(None));
[INFO] [stdout] 66  | |   
[INFO] [stdout] 67  | |   let on_source = {
[INFO] [stdout] ...   |
[INFO] [stdout] 104 | |   window()?
[INFO] [stdout]     | |           ^ use `.ok_or(...)?` to provide an error compatible with `Result<(), error::Error>`
[INFO] [stdout] ...   |
[INFO] [stdout] 124 | |   Ok(())
[INFO] [stdout] 125 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<Option<Infallible>>` is not implemented for `Result<(), error::Error>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 12 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `spectrogram`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "9205b4bc1f429f1cd0501e49e87c9a6f4fee8c52d2ff038ef217e862fb6588a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9205b4bc1f429f1cd0501e49e87c9a6f4fee8c52d2ff038ef217e862fb6588a1", kill_on_drop: false }`
[INFO] [stdout] 9205b4bc1f429f1cd0501e49e87c9a6f4fee8c52d2ff038ef217e862fb6588a1