[INFO] cloning repository https://github.com/iamguid/flutter_rust_bridge_stream_sync_structs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/iamguid/flutter_rust_bridge_stream_sync_structs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiamguid%2Fflutter_rust_bridge_stream_sync_structs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiamguid%2Fflutter_rust_bridge_stream_sync_structs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 22c9dafe147a9cc7fa65b26777058d7ad932db3a
[INFO] testing iamguid/flutter_rust_bridge_stream_sync_structs against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiamguid%2Fflutter_rust_bridge_stream_sync_structs" "/workspace/builds/worker-34/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-34/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/iamguid/flutter_rust_bridge_stream_sync_structs on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/iamguid/flutter_rust_bridge_stream_sync_structs
[INFO] finished tweaking git repo https://github.com/iamguid/flutter_rust_bridge_stream_sync_structs
[INFO] tweaked toml for git repo https://github.com/iamguid/flutter_rust_bridge_stream_sync_structs written to /workspace/builds/worker-34/source/Cargo.toml
[INFO] crate git repo https://github.com/iamguid/flutter_rust_bridge_stream_sync_structs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] efb8eb1f273085331c39b94d8a86b0daa172277770caa65c35b3eed891d682b4
[INFO] running `Command { std: "docker" "start" "-a" "efb8eb1f273085331c39b94d8a86b0daa172277770caa65c35b3eed891d682b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "efb8eb1f273085331c39b94d8a86b0daa172277770caa65c35b3eed891d682b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efb8eb1f273085331c39b94d8a86b0daa172277770caa65c35b3eed891d682b4", kill_on_drop: false }`
[INFO] [stdout] efb8eb1f273085331c39b94d8a86b0daa172277770caa65c35b3eed891d682b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 361321135bcae8bca90a527d46915ec7f80faebff4645a6d485e2754a1f90eaf
[INFO] running `Command { std: "docker" "start" "-a" "361321135bcae8bca90a527d46915ec7f80faebff4645a6d485e2754a1f90eaf", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling gimli v0.26.1
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling smallvec v1.7.0
[INFO] [stderr]    Compiling anyhow v1.0.52
[INFO] [stderr]    Compiling rustc-demangle v0.1.21
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling atomic v0.5.1
[INFO] [stderr]    Compiling instant v0.1.12
[INFO] [stderr]    Compiling object v0.27.1
[INFO] [stderr]    Compiling backtrace v0.3.63
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling threadpool v1.8.1
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling addr2line v0.17.0
[INFO] [stderr]    Compiling allo-isolate v0.1.12
[INFO] [stderr]    Compiling flutter_rust_bridge v1.9.1
[INFO] [stderr]    Compiling flutter_rust_bridge_stream_sync_structs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: the method `into_dart` exists for type `u8`, but its trait bounds were not satisfied
[INFO] [stdout]   --> src/bridge_generated.rs:65:27
[INFO] [stdout]    |
[INFO] [stdout] 65 |         vec![self.message.into_dart(), self.stamp.into_dart()].into_dart()
[INFO] [stdout]    |                           ^^^^^^^^^ method cannot be called on `u8` due to unsatisfied trait bounds
[INFO] [stdout]    |
[INFO] [stdout]    = note: the following trait bounds were not satisfied:
[INFO] [stdout]            `u8: Into<DartCObject>`
[INFO] [stdout]            which is required by `u8: IntoDart`
[INFO] [stdout]            `&u8: Into<DartCObject>`
[INFO] [stdout]            which is required by `&u8: IntoDart`
[INFO] [stdout]            `&mut u8: Into<DartCObject>`
[INFO] [stdout]            which is required by `&mut u8: IntoDart`
[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 E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `flutter_rust_bridge_stream_sync_structs` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "361321135bcae8bca90a527d46915ec7f80faebff4645a6d485e2754a1f90eaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "361321135bcae8bca90a527d46915ec7f80faebff4645a6d485e2754a1f90eaf", kill_on_drop: false }`
[INFO] [stdout] 361321135bcae8bca90a527d46915ec7f80faebff4645a6d485e2754a1f90eaf