[INFO] cloning repository https://github.com/Yotsuyubi/MonoBassSynth
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Yotsuyubi/MonoBassSynth" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYotsuyubi%2FMonoBassSynth", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYotsuyubi%2FMonoBassSynth'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ccb3cebad7ef17d4f601220f59136f4feba05406
[INFO] checking Yotsuyubi/MonoBassSynth against try#3d9fdbff4f377de96b3a51174e7a64086bee9a5c for pr-81477
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYotsuyubi%2FMonoBassSynth" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Yotsuyubi/MonoBassSynth on toolchain 3d9fdbff4f377de96b3a51174e7a64086bee9a5c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Yotsuyubi/MonoBassSynth
[INFO] finished tweaking git repo https://github.com/Yotsuyubi/MonoBassSynth
[INFO] tweaked toml for git repo https://github.com/Yotsuyubi/MonoBassSynth written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/Yotsuyubi/MonoBassSynth already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1a672050c16a958128d522ae54900eedd21706969844713a9fd3528c7c95cc1d
[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" "1a672050c16a958128d522ae54900eedd21706969844713a9fd3528c7c95cc1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1a672050c16a958128d522ae54900eedd21706969844713a9fd3528c7c95cc1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a672050c16a958128d522ae54900eedd21706969844713a9fd3528c7c95cc1d", kill_on_drop: false }`
[INFO] [stdout] 1a672050c16a958128d522ae54900eedd21706969844713a9fd3528c7c95cc1d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d1c44414e1a214d397405bdbd9c45a7c95e22e5585ee2a494362fed2caf086c8
[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" "d1c44414e1a214d397405bdbd9c45a7c95e22e5585ee2a494362fed2caf086c8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling cc v1.0.68
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking vst v0.2.1 (https://github.com/RustAudio/vst-rs.git?rev=a398697b#a398697b)
[INFO] [stderr]     Checking vst-gui v0.2.0 (https://github.com/Yotsuyubi/rust-vst-gui.git?rev=72a3b4f#72a3b4f7)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/rust-vst-gui-d78a8a46a3f8a46a/72a3b4f/src/lib.rs:77:97
[INFO] [stdout]    |
[INFO] [stdout] 76 | pub fn new_plugin_gui(
[INFO] [stdout]    |        -------------- implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stdout] 77 |     html_document: String, js_callback: JavascriptCallback, window_size: Option<(i32, i32)>) -> PluginGui
[INFO] [stdout]    |                                                                                                 ^^^^^^^^^ expected struct `PluginGui`, found `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `vst-gui`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "d1c44414e1a214d397405bdbd9c45a7c95e22e5585ee2a494362fed2caf086c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1c44414e1a214d397405bdbd9c45a7c95e22e5585ee2a494362fed2caf086c8", kill_on_drop: false }`
[INFO] [stdout] d1c44414e1a214d397405bdbd9c45a7c95e22e5585ee2a494362fed2caf086c8