[INFO] fetching crate prest-build 0.6.0-debug4...
[INFO] testing prest-build-0.6.0-debug4 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate prest-build 0.6.0-debug4 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate prest-build 0.6.0-debug4
[INFO] finished tweaking crates.io crate prest-build 0.6.0-debug4
[INFO] tweaked toml for crates.io crate prest-build 0.6.0-debug4 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate prest-build 0.6.0-debug4 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 crates.io crate prest-build 0.6.0-debug4 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 9c710e52b1b5ee182813dbf8f5fb8be2dac275fd216a6a0f0c0a66508229b6f1
[INFO] running `Command { std: "docker" "start" "-a" "9c710e52b1b5ee182813dbf8f5fb8be2dac275fd216a6a0f0c0a66508229b6f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9c710e52b1b5ee182813dbf8f5fb8be2dac275fd216a6a0f0c0a66508229b6f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c710e52b1b5ee182813dbf8f5fb8be2dac275fd216a6a0f0c0a66508229b6f1", kill_on_drop: false }`
[INFO] [stdout] 9c710e52b1b5ee182813dbf8f5fb8be2dac275fd216a6a0f0c0a66508229b6f1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 023856cbe9150521e071fe685ed11fbff2501d81f519373296d67b1d343a2f8e
[INFO] running `Command { std: "docker" "start" "-a" "023856cbe9150521e071fe685ed11fbff2501d81f519373296d67b1d343a2f8e", kill_on_drop: false }`
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling hashbrown v0.15.4
[INFO] [stderr]    Compiling semver v1.0.26
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling fallible-iterator v0.2.0
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]    Compiling leb128 v0.2.5
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling object v0.36.7
[INFO] [stderr]    Compiling serde_json v1.0.140
[INFO] [stderr]    Compiling rustc-demangle v0.1.25
[INFO] [stderr]    Compiling rustix v1.0.7
[INFO] [stderr]    Compiling gimli v0.31.1
[INFO] [stderr]    Compiling id-arena v2.2.1
[INFO] [stderr]    Compiling mime_guess v2.0.5
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.100
[INFO] [stderr]    Compiling winnow v0.7.11
[INFO] [stderr]    Compiling wasm-encoder v0.214.0
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]    Compiling toml_write v0.1.2
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling tokio v1.45.1
[INFO] [stderr]    Compiling cfg_aliases v0.2.1
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling gimli v0.26.2
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling addr2line v0.24.2
[INFO] [stderr]    Compiling tempfile v3.20.0
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling walrus-macro v0.22.0
[INFO] [stderr]    Compiling backtrace v0.3.75
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling indexmap v2.10.0
[INFO] [stderr]    Compiling hashbrown v0.14.5
[INFO] [stderr]    Compiling serde_spanned v0.6.9
[INFO] [stderr]    Compiling toml_datetime v0.6.11
[INFO] [stderr]    Compiling wasmparser v0.214.0
[INFO] [stderr]    Compiling toml_edit v0.22.27
[INFO] [stderr]    Compiling webmanifest v1.1.1
[INFO] [stderr]    Compiling toml v0.8.23
[INFO] [stderr]    Compiling walrus v0.23.3
[INFO] [stderr]    Compiling wasm-bindgen-wasm-conventions v0.2.100
[INFO] [stderr]    Compiling wasm-bindgen-externref-xform v0.2.100
[INFO] [stderr]    Compiling wasm-bindgen-multi-value-xform v0.2.100
[INFO] [stderr]    Compiling wasm-bindgen-threads-xform v0.2.100
[INFO] [stderr]    Compiling wasm-bindgen-wasm-interpreter v0.2.100
[INFO] [stderr]    Compiling wasm-bindgen-cli-support v0.2.100
[INFO] [stderr]    Compiling prest-build v0.6.0-debug4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `serde_json`
[INFO] [stdout]  --> lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use serde_json;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 27.41s
[INFO] running `Command { std: "docker" "inspect" "023856cbe9150521e071fe685ed11fbff2501d81f519373296d67b1d343a2f8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "023856cbe9150521e071fe685ed11fbff2501d81f519373296d67b1d343a2f8e", kill_on_drop: false }`
[INFO] [stdout] 023856cbe9150521e071fe685ed11fbff2501d81f519373296d67b1d343a2f8e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9b9fa411c1b26a1e36ce63909c55dd440b32eed3e694cef425552ef685829c0c
[INFO] running `Command { std: "docker" "start" "-a" "9b9fa411c1b26a1e36ce63909c55dd440b32eed3e694cef425552ef685829c0c", kill_on_drop: false }`
[INFO] [stderr]    Compiling prest-build v0.6.0-debug4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `serde_json`
[INFO] [stdout]  --> lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use serde_json;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json`
[INFO] [stdout]  --> lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use serde_json;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `Command { std: "docker" "inspect" "9b9fa411c1b26a1e36ce63909c55dd440b32eed3e694cef425552ef685829c0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b9fa411c1b26a1e36ce63909c55dd440b32eed3e694cef425552ef685829c0c", kill_on_drop: false }`
[INFO] [stdout] 9b9fa411c1b26a1e36ce63909c55dd440b32eed3e694cef425552ef685829c0c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 30b70ccff4768d7f454a3162fb887887e52b2c909aa254ffc5694fc0c64cee98
[INFO] running `Command { std: "docker" "start" "-a" "30b70ccff4768d7f454a3162fb887887e52b2c909aa254ffc5694fc0c64cee98", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `serde_json`
[INFO] [stderr]  --> lib.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use serde_json;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `prest-build` (lib) generated 1 warning (run `cargo fix --lib -p prest-build` to apply 1 suggestion)
[INFO] [stderr] warning: `prest-build` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.23s
[INFO] [stderr]      Running unittests lib.rs (/opt/rustwide/target/debug/deps/prest_build-c66b37e5878cf977)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests prest_build
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "30b70ccff4768d7f454a3162fb887887e52b2c909aa254ffc5694fc0c64cee98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30b70ccff4768d7f454a3162fb887887e52b2c909aa254ffc5694fc0c64cee98", kill_on_drop: false }`
[INFO] [stdout] 30b70ccff4768d7f454a3162fb887887e52b2c909aa254ffc5694fc0c64cee98