[INFO] cloning repository https://github.com/Stephen-X/rust-csharp-async-ffi
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Stephen-X/rust-csharp-async-ffi" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FStephen-X%2Frust-csharp-async-ffi", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FStephen-X%2Frust-csharp-async-ffi'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1e8caf1592f9e4b4a0d103e5e0a770e872fd8574
[INFO] testing Stephen-X/rust-csharp-async-ffi against beta-2025-09-21 for beta-1.91-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FStephen-X%2Frust-csharp-async-ffi" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Stephen-X/rust-csharp-async-ffi
[INFO] finished tweaking git repo https://github.com/Stephen-X/rust-csharp-async-ffi
[INFO] tweaked toml for git repo https://github.com/Stephen-X/rust-csharp-async-ffi written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Stephen-X/rust-csharp-async-ffi on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Stephen-X/rust-csharp-async-ffi 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" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7de0df71e630a7cbd3234fde6d40d0f29a52bc993af61e7c5666c4ad589520f5
[INFO] running `Command { std: "docker" "start" "-a" "7de0df71e630a7cbd3234fde6d40d0f29a52bc993af61e7c5666c4ad589520f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7de0df71e630a7cbd3234fde6d40d0f29a52bc993af61e7c5666c4ad589520f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7de0df71e630a7cbd3234fde6d40d0f29a52bc993af61e7c5666c4ad589520f5", kill_on_drop: false }`
[INFO] [stdout] 7de0df71e630a7cbd3234fde6d40d0f29a52bc993af61e7c5666c4ad589520f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 11ce224b3767a8d3caedbf47add619ac29b78caf9bc03246c4f3bfcea62726c8
[INFO] running `Command { std: "docker" "start" "-a" "11ce224b3767a8d3caedbf47add619ac29b78caf9bc03246c4f3bfcea62726c8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling rustix v1.0.8
[INFO] [stderr]    Compiling linux-raw-sys v0.9.4
[INFO] [stderr]    Compiling bitflags v2.9.2
[INFO] [stderr]    Compiling equivalent v1.0.2
[INFO] [stderr]    Compiling heck v0.5.0
[INFO] [stderr]    Compiling fastrand v2.3.0
[INFO] [stderr]    Compiling hashbrown v0.15.5
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling siphasher v0.3.11
[INFO] [stderr]    Compiling camino v1.1.11
[INFO] [stderr]    Compiling fs-err v2.11.0
[INFO] [stderr]    Compiling semver v1.0.26
[INFO] [stderr]    Compiling itoa v1.0.15
[INFO] [stderr]    Compiling thiserror v2.0.16
[INFO] [stderr]    Compiling winnow v0.7.13
[INFO] [stderr]    Compiling serde_json v1.0.143
[INFO] [stderr]    Compiling memchr v2.7.5
[INFO] [stderr]    Compiling ryu v1.0.20
[INFO] [stderr]    Compiling pin-project-lite v0.2.16
[INFO] [stderr]    Compiling rustc-hash v2.1.1
[INFO] [stderr]    Compiling smawk v0.3.2
[INFO] [stderr]    Compiling bytes v1.10.1
[INFO] [stderr]    Compiling weedle2 v5.0.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling plain v0.2.3
[INFO] [stderr]    Compiling indexmap v2.11.0
[INFO] [stderr]    Compiling anstyle v1.0.11
[INFO] [stderr]    Compiling textwrap v0.16.2
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling clap_lex v0.7.5
[INFO] [stderr]    Compiling futures-io v0.3.31
[INFO] [stderr]    Compiling glob v0.3.3
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling signal-hook-registry v1.4.6
[INFO] [stderr]    Compiling socket2 v0.6.0
[INFO] [stderr]    Compiling mio v1.0.4
[INFO] [stderr]    Compiling clap_builder v4.5.44
[INFO] [stderr]    Compiling parking_lot v0.12.4
[INFO] [stderr]    Compiling rand_core v0.9.3
[INFO] [stderr]    Compiling assertor v0.0.4
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stdout] error[E0599]: the method `as_ref` exists for reference `&Cow<'_, T>`, but its trait bounds were not satisfied
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assertor-0.0.4/src/assertions/cow.rs:79:35
[INFO] [stdout]    |
[INFO] [stdout] 79 |         let value = self.actual().as_ref().to_owned();
[INFO] [stdout]    |                                   ^^^^^^ method cannot be called on `&Cow<'_, T>` due to unsatisfied trait bounds
[INFO] [stdout]    |
[INFO] [stdout]    = note: the following trait bounds were not satisfied:
[INFO] [stdout]            `Y: Borrow<T>`
[INFO] [stdout]            which is required by `Cow<'_, T>: AsRef<T>`
[INFO] [stdout]            `Cow<'_, T>: AsRef<_>`
[INFO] [stdout]            which is required by `&Cow<'_, T>: AsRef<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rand v0.9.2
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `assertor` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "11ce224b3767a8d3caedbf47add619ac29b78caf9bc03246c4f3bfcea62726c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11ce224b3767a8d3caedbf47add619ac29b78caf9bc03246c4f3bfcea62726c8", kill_on_drop: false }`
[INFO] [stdout] 11ce224b3767a8d3caedbf47add619ac29b78caf9bc03246c4f3bfcea62726c8