[INFO] fetching crate n-observer-cffi-impl 0.1.0...
[INFO] testing n-observer-cffi-impl-0.1.0 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-1
[INFO] extracting crate n-observer-cffi-impl 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate n-observer-cffi-impl 0.1.0
[INFO] finished tweaking crates.io crate n-observer-cffi-impl 0.1.0
[INFO] tweaked toml for crates.io crate n-observer-cffi-impl 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate n-observer-cffi-impl 0.1.0 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate n-observer-cffi-impl 0.1.0 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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 082af0e194f3bd0535c2e1a38ce729a5e11bb0a0f0f003e903c398f592d9fca2
[INFO] running `Command { std: "docker" "start" "-a" "082af0e194f3bd0535c2e1a38ce729a5e11bb0a0f0f003e903c398f592d9fca2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "082af0e194f3bd0535c2e1a38ce729a5e11bb0a0f0f003e903c398f592d9fca2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "082af0e194f3bd0535c2e1a38ce729a5e11bb0a0f0f003e903c398f592d9fca2", kill_on_drop: false }`
[INFO] [stdout] 082af0e194f3bd0535c2e1a38ce729a5e11bb0a0f0f003e903c398f592d9fca2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=forbid" "-e" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 02f347aa6690ccd347b3c59e1e491a0c83603e6364b23b80b999eb5f911b0588
[INFO] running `Command { std: "docker" "start" "-a" "02f347aa6690ccd347b3c59e1e491a0c83603e6364b23b80b999eb5f911b0588", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.104
[INFO] [stderr]    Compiling unicode-ident v1.0.22
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling slab v0.4.11
[INFO] [stderr]    Compiling ucd-trie v0.1.7
[INFO] [stderr]    Compiling quote v1.0.42
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling zmij v1.0.2
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling serde_json v1.0.148
[INFO] [stderr]    Compiling anyhow v1.0.100
[INFO] [stderr]    Compiling itoa v1.0.17
[INFO] [stderr]    Compiling thiserror v2.0.17
[INFO] [stderr]    Compiling num-modular v0.6.1
[INFO] [stderr]    Compiling log v0.4.29
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling heck v0.5.0
[INFO] [stderr]    Compiling pest v2.8.4
[INFO] [stderr]    Compiling num-order v1.2.0
[INFO] [stderr]    Compiling syn v2.0.111
[INFO] [stderr]    Compiling pest_meta v2.8.4
[INFO] [stderr]    Compiling rs-schema v1.0.0
[INFO] [stderr]    Compiling darling_core v0.20.11
[INFO] [stderr]    Compiling pest_generator v2.8.4
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling tokio-macros v2.6.0
[INFO] [stderr]    Compiling rs-schema-derive-impl v0.1.0
[INFO] [stderr]    Compiling thiserror-impl v2.0.17
[INFO] [stderr]    Compiling pest_derive v2.8.4
[INFO] [stderr]    Compiling rs-schema-derive v0.1.0
[INFO] [stderr]    Compiling tokio v1.48.0
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling darling_macro v0.20.11
[INFO] [stderr]    Compiling darling v0.20.11
[INFO] [stderr]    Compiling derive_builder_core v0.20.2
[INFO] [stderr]    Compiling derive_builder_macro v0.20.2
[INFO] [stderr]    Compiling derive_builder v0.20.2
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling handlebars v6.3.2
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling async-cffi v0.1.1
[INFO] [stderr]    Compiling n-observer v0.1.2
[INFO] [stderr]    Compiling async-cffi-codegen v0.1.0
[INFO] [stderr]    Compiling n-observer-cffi-impl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `generate_py`
[INFO] [stdout]  --> build.rs:3:26
[INFO] [stdout]   |
[INFO] [stdout] 3 | use async_cffi_codegen::{generate_py, generate_rs};
[INFO] [stdout]   |                          ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_py_target_path` is never used
[INFO] [stdout]   --> build.rs:57:4
[INFO] [stdout]    |
[INFO] [stdout] 57 | fn get_py_target_path(filename: &str) -> std::path::PathBuf {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: n-observer-cffi-impl@0.1.0: Using default edition 2024 for rustfmt (CARGO_PKG_EDITION missing: environment variable not found)
[INFO] [stderr] warning: n-observer-cffi-impl@0.1.0: Failed to format generated code: rustfmt exited with status exit status: 1: 
[INFO] [stderr] error: failed to run custom build command for `n-observer-cffi-impl v0.1.0 (/opt/rustwide/workdir)`
[INFO] [stderr] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_DEV_BUILD_OVERRIDE_DEBUG=true environment variable to enable debug information generation.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/n-observer-cffi-impl-4b518d4044785e95/build-script-build` (exit status: 1)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:warning=Using default edition 2024 for rustfmt (CARGO_PKG_EDITION missing: environment variable not found)
[INFO] [stderr]   cargo:warning=Failed to format generated code: rustfmt exited with status exit status: 1: 
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr]   error: 'rustfmt' is not installed for the custom toolchain 'dec9417b8611e34e787a3e4c37686b5131f9e5c5'.
[INFO] [stderr]   note: this is a custom toolchain, which cannot use `rustup component add`
[INFO] [stderr]   help: if you built this toolchain from source, and used `rustup toolchain link`, then you may be able to build the component with `x.py`
[INFO] [stderr]   Error: Custom { kind: Other, error: "failed to create file /opt/rustwide/workdir/src/ior_cffi_traits.rs: Read-only file system (os error 30)" }
[INFO] running `Command { std: "docker" "inspect" "02f347aa6690ccd347b3c59e1e491a0c83603e6364b23b80b999eb5f911b0588", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02f347aa6690ccd347b3c59e1e491a0c83603e6364b23b80b999eb5f911b0588", kill_on_drop: false }`
[INFO] [stdout] 02f347aa6690ccd347b3c59e1e491a0c83603e6364b23b80b999eb5f911b0588