[INFO] fetching crate syphon-metal 0.4.2...
[INFO] testing syphon-metal-0.4.2 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate syphon-metal 0.4.2 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate syphon-metal 0.4.2
[INFO] finished tweaking crates.io crate syphon-metal 0.4.2
[INFO] tweaked toml for crates.io crate syphon-metal 0.4.2 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate syphon-metal 0.4.2 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate syphon-metal 0.4.2 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" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wgpu-naga-bridge v30.0.1
[INFO] [stderr]   Downloaded wgpu-core-deps-windows-linux-android v30.0.1
[INFO] [stderr]   Downloaded wgpu-core-deps-emscripten v30.0.1
[INFO] [stderr]   Downloaded wgpu-core-deps-apple v30.0.1
[INFO] [stderr]   Downloaded io-surface v0.16.1
[INFO] [stderr]   Downloaded naga-types v30.0.1
[INFO] [stderr]   Downloaded leaky-cow v0.1.1
[INFO] [stderr]   Downloaded wgpu-types v30.0.1
[INFO] [stderr]   Downloaded leak v0.1.2
[INFO] [stderr]   Downloaded wgpu v30.0.1
[INFO] [stderr]   Downloaded syphon-core v0.4.0
[INFO] [stderr]   Downloaded cocoa v0.26.1
[INFO] [stderr]   Downloaded wgpu-hal v30.0.1
[INFO] [stderr]   Downloaded wgpu-core v30.0.1
[INFO] [stderr]   Downloaded naga v30.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] b0fc11ab116ef38b9ed0188f70c3b07690c579c23f8d0f9dae5e135032cca31c
[INFO] running `Command { std: "docker" "start" "b0fc11ab116ef38b9ed0188f70c3b07690c579c23f8d0f9dae5e135032cca31c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b0fc11ab116ef38b9ed0188f70c3b07690c579c23f8d0f9dae5e135032cca31c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "b0fc11ab116ef38b9ed0188f70c3b07690c579c23f8d0f9dae5e135032cca31c" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b0fc11ab116ef38b9ed0188f70c3b07690c579c23f8d0f9dae5e135032cca31c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "b0fc11ab116ef38b9ed0188f70c3b07690c579c23f8d0f9dae5e135032cca31c" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling syphon-core v0.4.0
[INFO] [stderr]    Compiling log v0.4.32
[INFO] [stdout] error[E0432]: unresolved import `utils::class_exists`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syphon-core-0.4.0/src/lib.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 | pub use utils::class_exists;
[INFO] [stdout]    |         ^^^^^^^------------
[INFO] [stdout]    |                |
[INFO] [stdout]    |                no `class_exists` in `utils`
[INFO] [stdout]    |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syphon-core-0.4.0/src/utils.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 64 | #[cfg(target_os = "macos")]
[INFO] [stdout]    |       ------------------- the item is gated behind the `macos` feature
[INFO] [stdout] 65 | pub fn class_exists(name: &str) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `objc2` in this scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syphon-core-0.4.0/src/server.rs:87:28
[INFO] [stdout]    |
[INFO] [stdout] 87 |         metal_device: *mut objc2::runtime::AnyObject,
[INFO] [stdout]    |                            ^^^^^ use of unresolved module or unlinked crate `objc2`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `objc2`, use `cargo add objc2` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `objc2` in this scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syphon-core-0.4.0/src/server.rs:99:28
[INFO] [stdout]    |
[INFO] [stdout] 99 |         metal_device: *mut objc2::runtime::AnyObject,
[INFO] [stdout]    |                            ^^^^^ use of unresolved module or unlinked crate `objc2`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `objc2`, use `cargo add objc2` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `client_count` found for reference `&SyphonServer` in the current scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syphon-core-0.4.0/src/server.rs:257:14
[INFO] [stdout]     |
[INFO] [stdout] 257 |         self.client_count() > 0
[INFO] [stdout]     |              ^^^^^^^^^^^^ method not found in `&SyphonServer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syphon-core-0.4.0/src/client.rs:231:24
[INFO] [stdout]     |
[INFO] [stdout] 231 |         let (tx, rx) = std::sync::mpsc::sync_channel(1);
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot infer type of the type parameter `T` declared on the function `sync_channel`
[INFO] [stdout]     |
[INFO] [stdout] help: consider specifying a concrete type for the type parameter `T`
[INFO] [stdout]     |
[INFO] [stdout] 231 |         let (tx, rx) = std::sync::mpsc::sync_channel::</* Type */>(1);
[INFO] [stdout]     |                                                     ++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syphon-core-0.4.0/src/client.rs:250:24
[INFO] [stdout]     |
[INFO] [stdout] 250 |         let (tx, rx) = std::sync::mpsc::sync_channel(1);
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot infer type of the type parameter `T` declared on the function `sync_channel`
[INFO] [stdout]     |
[INFO] [stdout] help: consider specifying a concrete type for the type parameter `T`
[INFO] [stdout]     |
[INFO] [stdout] 250 |         let (tx, rx) = std::sync::mpsc::sync_channel::</* Type */>(1);
[INFO] [stdout]     |                                                     ++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0432, E0433, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `syphon-core` (lib) due to 6 previous errors
[INFO] running `Command { std: "docker" "inspect" "b0fc11ab116ef38b9ed0188f70c3b07690c579c23f8d0f9dae5e135032cca31c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0fc11ab116ef38b9ed0188f70c3b07690c579c23f8d0f9dae5e135032cca31c", kill_on_drop: false }`
[INFO] [stdout] b0fc11ab116ef38b9ed0188f70c3b07690c579c23f8d0f9dae5e135032cca31c
