[INFO] fetching crate practice-chinese 0.2.0...
[INFO] testing practice-chinese-0.2.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate practice-chinese 0.2.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate practice-chinese 0.2.0
[INFO] finished tweaking crates.io crate practice-chinese 0.2.0
[INFO] tweaked toml for crates.io crate practice-chinese 0.2.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate practice-chinese 0.2.0 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] crate crates.io crate practice-chinese 0.2.0 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" "+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-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" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cd3d71bc3c61f4de2f587098d2e03ba7d02da6aa4688d61116119683413b2746
[INFO] running `Command { std: "docker" "start" "-a" "cd3d71bc3c61f4de2f587098d2e03ba7d02da6aa4688d61116119683413b2746", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cd3d71bc3c61f4de2f587098d2e03ba7d02da6aa4688d61116119683413b2746", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd3d71bc3c61f4de2f587098d2e03ba7d02da6aa4688d61116119683413b2746", kill_on_drop: false }`
[INFO] [stdout] cd3d71bc3c61f4de2f587098d2e03ba7d02da6aa4688d61116119683413b2746
[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=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] 93f22425b7de93ec959e5251c866e7745c4c6acf3ebca04d4ddfce98bedd9fc6
[INFO] running `Command { std: "docker" "start" "-a" "93f22425b7de93ec959e5251c866e7745c4c6acf3ebca04d4ddfce98bedd9fc6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.171
[INFO] [stderr]    Compiling bitflags v2.9.0
[INFO] [stderr]    Compiling once_cell v1.21.1
[INFO] [stderr]    Compiling signal-hook v0.3.17
[INFO] [stderr]    Compiling rustix v1.0.3
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling linux-raw-sys v0.9.3
[INFO] [stderr]    Compiling smallvec v1.14.0
[INFO] [stderr]    Compiling log v0.4.26
[INFO] [stderr]    Compiling proc-macro2 v1.0.94
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]    Compiling unicode-width v0.2.0
[INFO] [stderr]    Compiling linux-raw-sys v0.4.15
[INFO] [stderr]    Compiling zeroize v1.8.1
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling thread_local v1.1.8
[INFO] [stderr]    Compiling fuzzy-matcher v0.3.7
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling getrandom v0.3.2
[INFO] [stderr]    Compiling signal-hook-registry v1.4.2
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling mio v1.0.3
[INFO] [stderr]    Compiling console v0.15.11
[INFO] [stderr]    Compiling rand_core v0.9.3
[INFO] [stderr]    Compiling parking_lot v0.12.3
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling signal-hook-mio v0.2.4
[INFO] [stderr]    Compiling crossterm v0.28.1
[INFO] [stderr]    Compiling rand v0.9.0
[INFO] [stderr]    Compiling tempfile v3.19.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling dialoguer v0.11.0
[INFO] [stderr]    Compiling serde_json v1.0.140
[INFO] [stderr]    Compiling practice-chinese v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.56s
[INFO] running `Command { std: "docker" "inspect" "93f22425b7de93ec959e5251c866e7745c4c6acf3ebca04d4ddfce98bedd9fc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93f22425b7de93ec959e5251c866e7745c4c6acf3ebca04d4ddfce98bedd9fc6", kill_on_drop: false }`
[INFO] [stdout] 93f22425b7de93ec959e5251c866e7745c4c6acf3ebca04d4ddfce98bedd9fc6
[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=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] 1e2837755461cf8cb49bbfd4155e1a6800fedacc52e4fdecad13d8e763f201da
[INFO] running `Command { std: "docker" "start" "-a" "1e2837755461cf8cb49bbfd4155e1a6800fedacc52e4fdecad13d8e763f201da", kill_on_drop: false }`
[INFO] [stderr]    Compiling practice-chinese v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `Command { std: "docker" "inspect" "1e2837755461cf8cb49bbfd4155e1a6800fedacc52e4fdecad13d8e763f201da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e2837755461cf8cb49bbfd4155e1a6800fedacc52e4fdecad13d8e763f201da", kill_on_drop: false }`
[INFO] [stdout] 1e2837755461cf8cb49bbfd4155e1a6800fedacc52e4fdecad13d8e763f201da
[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=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] cd5f42dc3f7dc7aed12717483ca89b5126d3605ebef9c864dbce064b2ded48fc
[INFO] running `Command { std: "docker" "start" "-a" "cd5f42dc3f7dc7aed12717483ca89b5126d3605ebef9c864dbce064b2ded48fc", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/practice_chinese-3ccc06801f8c9c05)
[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" "cd5f42dc3f7dc7aed12717483ca89b5126d3605ebef9c864dbce064b2ded48fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd5f42dc3f7dc7aed12717483ca89b5126d3605ebef9c864dbce064b2ded48fc", kill_on_drop: false }`
[INFO] [stdout] cd5f42dc3f7dc7aed12717483ca89b5126d3605ebef9c864dbce064b2ded48fc
