[INFO] fetching crate plykit 0.1.7...
[INFO] testing plykit-0.1.7 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate plykit 0.1.7 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate plykit 0.1.7
[INFO] finished tweaking crates.io crate plykit 0.1.7
[INFO] tweaked toml for crates.io crate plykit 0.1.7 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate plykit 0.1.7 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 11 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c3dee5d63393d667ec506b4df08318c82676314605858a867f338a413c6a3ed7
[INFO] running `Command { std: "docker" "start" "-a" "c3dee5d63393d667ec506b4df08318c82676314605858a867f338a413c6a3ed7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c3dee5d63393d667ec506b4df08318c82676314605858a867f338a413c6a3ed7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3dee5d63393d667ec506b4df08318c82676314605858a867f338a413c6a3ed7", kill_on_drop: false }`
[INFO] [stdout] c3dee5d63393d667ec506b4df08318c82676314605858a867f338a413c6a3ed7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 86815d33a89653c62b7ed83f38e515e94e591c6fe62fad2dd3f6a2f31e3cd917
[INFO] running `Command { std: "docker" "start" "-a" "86815d33a89653c62b7ed83f38e515e94e591c6fe62fad2dd3f6a2f31e3cd917", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling plykit v0.1.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `cause` is never read
[INFO] [stdout]   --> src/model/mod.rs:22:26
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct StringError { cause:String }
[INFO] [stdout]    |            -----------   ^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = note: `StringError` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.17s
[INFO] running `Command { std: "docker" "inspect" "86815d33a89653c62b7ed83f38e515e94e591c6fe62fad2dd3f6a2f31e3cd917", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86815d33a89653c62b7ed83f38e515e94e591c6fe62fad2dd3f6a2f31e3cd917", kill_on_drop: false }`
[INFO] [stdout] 86815d33a89653c62b7ed83f38e515e94e591c6fe62fad2dd3f6a2f31e3cd917
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4484559e494dc0fdeb542075b04bb6fcb7dc70eaaa1f4b0795fbda8130c0a4c4
[INFO] running `Command { std: "docker" "start" "-a" "4484559e494dc0fdeb542075b04bb6fcb7dc70eaaa1f4b0795fbda8130c0a4c4", kill_on_drop: false }`
[INFO] [stdout] warning: field `cause` is never read
[INFO] [stdout]   --> src/model/mod.rs:22:26
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct StringError { cause:String }
[INFO] [stdout]    |            -----------   ^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = note: `StringError` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling plykit v0.1.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `cause` is never read
[INFO] [stdout]   --> src/model/mod.rs:22:26
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct StringError { cause:String }
[INFO] [stdout]    |            -----------   ^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = note: `StringError` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "4484559e494dc0fdeb542075b04bb6fcb7dc70eaaa1f4b0795fbda8130c0a4c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4484559e494dc0fdeb542075b04bb6fcb7dc70eaaa1f4b0795fbda8130c0a4c4", kill_on_drop: false }`
[INFO] [stdout] 4484559e494dc0fdeb542075b04bb6fcb7dc70eaaa1f4b0795fbda8130c0a4c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5f0eacf9255084cc6a2fb3a561cf1cbb7508ea9bdee011314b62cbe39ed0c6f5
[INFO] running `Command { std: "docker" "start" "-a" "5f0eacf9255084cc6a2fb3a561cf1cbb7508ea9bdee011314b62cbe39ed0c6f5", kill_on_drop: false }`
[INFO] [stderr] warning: field `cause` is never read
[INFO] [stderr]   --> src/model/mod.rs:22:26
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub struct StringError { cause:String }
[INFO] [stderr]    |            -----------   ^^^^^
[INFO] [stderr]    |            |
[INFO] [stderr]    |            field in this struct
[INFO] [stderr]    |
[INFO] [stderr]    = note: `StringError` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `plykit` (lib) generated 1 warning
[INFO] [stderr] warning: `plykit` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/plykit-b4957a0b32ad9370)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]    Doc-tests plykit
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 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" "5f0eacf9255084cc6a2fb3a561cf1cbb7508ea9bdee011314b62cbe39ed0c6f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f0eacf9255084cc6a2fb3a561cf1cbb7508ea9bdee011314b62cbe39ed0c6f5", kill_on_drop: false }`
[INFO] [stdout] 5f0eacf9255084cc6a2fb3a561cf1cbb7508ea9bdee011314b62cbe39ed0c6f5
