[INFO] fetching crate py_fstr 0.1.0...
[INFO] testing py_fstr-0.1.0 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate py_fstr 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate py_fstr 0.1.0
[INFO] finished tweaking crates.io crate py_fstr 0.1.0
[INFO] tweaked toml for crates.io crate py_fstr 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate py_fstr 0.1.0 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "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-2025-10-28" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 4 packages to latest compatible versions
[INFO] [stderr]       Adding litrs v0.4.2 (available: v1.0.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4d0ab0165bfeb6a7a54ca83ee4f3674951474175f06b56fde308440d1f38d668
[INFO] running `Command { std: "docker" "start" "-a" "4d0ab0165bfeb6a7a54ca83ee4f3674951474175f06b56fde308440d1f38d668", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4d0ab0165bfeb6a7a54ca83ee4f3674951474175f06b56fde308440d1f38d668", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d0ab0165bfeb6a7a54ca83ee4f3674951474175f06b56fde308440d1f38d668", kill_on_drop: false }`
[INFO] [stdout] 4d0ab0165bfeb6a7a54ca83ee4f3674951474175f06b56fde308440d1f38d668
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d27a2788d0b73647cb17cf603ef9c5d2a2b29cee9927e62c42a4e1a00a698d1
[INFO] running `Command { std: "docker" "start" "-a" "2d27a2788d0b73647cb17cf603ef9c5d2a2b29cee9927e62c42a4e1a00a698d1", kill_on_drop: false }`
[INFO] [stderr]    Compiling litrs v0.4.2
[INFO] [stderr]    Compiling py_fstr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `Command { std: "docker" "inspect" "2d27a2788d0b73647cb17cf603ef9c5d2a2b29cee9927e62c42a4e1a00a698d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d27a2788d0b73647cb17cf603ef9c5d2a2b29cee9927e62c42a4e1a00a698d1", kill_on_drop: false }`
[INFO] [stdout] 2d27a2788d0b73647cb17cf603ef9c5d2a2b29cee9927e62c42a4e1a00a698d1
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 977bb88183ca58ed7e2aaffd1c0c408fb3dfbf94bb247ddb4cfec376f6d08f15
[INFO] running `Command { std: "docker" "start" "-a" "977bb88183ca58ed7e2aaffd1c0c408fb3dfbf94bb247ddb4cfec376f6d08f15", kill_on_drop: false }`
[INFO] [stderr]    Compiling py_fstr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "977bb88183ca58ed7e2aaffd1c0c408fb3dfbf94bb247ddb4cfec376f6d08f15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "977bb88183ca58ed7e2aaffd1c0c408fb3dfbf94bb247ddb4cfec376f6d08f15", kill_on_drop: false }`
[INFO] [stdout] 977bb88183ca58ed7e2aaffd1c0c408fb3dfbf94bb247ddb4cfec376f6d08f15
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e4271876877297de6490a12294f138a2355a18f1189b76bdc87c9837930ccb4e
[INFO] running `Command { std: "docker" "start" "-a" "e4271876877297de6490a12294f138a2355a18f1189b76bdc87c9837930ccb4e", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/py_fstr-e059260ed508675a)
[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] [stderr]    Doc-tests py_fstr
[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" "e4271876877297de6490a12294f138a2355a18f1189b76bdc87c9837930ccb4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4271876877297de6490a12294f138a2355a18f1189b76bdc87c9837930ccb4e", kill_on_drop: false }`
[INFO] [stdout] e4271876877297de6490a12294f138a2355a18f1189b76bdc87c9837930ccb4e