[INFO] fetching crate sizef 0.2.1...
[INFO] testing sizef-0.2.1 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate sizef 0.2.1 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate sizef 0.2.1
[INFO] finished tweaking crates.io crate sizef 0.2.1
[INFO] tweaked toml for crates.io crate sizef 0.2.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate sizef 0.2.1 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 sizef 0.2.1 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] ec0dd627256a699829bd4e5c6e4fb51e956f21dbb3031083f56bbe89e4bb0b2d
[INFO] running `Command { std: "docker" "start" "-a" "ec0dd627256a699829bd4e5c6e4fb51e956f21dbb3031083f56bbe89e4bb0b2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ec0dd627256a699829bd4e5c6e4fb51e956f21dbb3031083f56bbe89e4bb0b2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec0dd627256a699829bd4e5c6e4fb51e956f21dbb3031083f56bbe89e4bb0b2d", kill_on_drop: false }`
[INFO] [stdout] ec0dd627256a699829bd4e5c6e4fb51e956f21dbb3031083f56bbe89e4bb0b2d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] da9a30553e4b333dafba15757f012f5e76ddab1a8a8cc31dc667448a597c2bb3
[INFO] running `Command { std: "docker" "start" "-a" "da9a30553e4b333dafba15757f012f5e76ddab1a8a8cc31dc667448a597c2bb3", kill_on_drop: false }`
[INFO] [stderr]    Compiling sizef v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "da9a30553e4b333dafba15757f012f5e76ddab1a8a8cc31dc667448a597c2bb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da9a30553e4b333dafba15757f012f5e76ddab1a8a8cc31dc667448a597c2bb3", kill_on_drop: false }`
[INFO] [stdout] da9a30553e4b333dafba15757f012f5e76ddab1a8a8cc31dc667448a597c2bb3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 0ca0a817587fda1b4647ccd11cb0e256ad7a93ec16678a866f351b01569cbe93
[INFO] running `Command { std: "docker" "start" "-a" "0ca0a817587fda1b4647ccd11cb0e256ad7a93ec16678a866f351b01569cbe93", kill_on_drop: false }`
[INFO] [stderr]    Compiling sizef v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: cannot find type `String` in this scope
[INFO] [stdout]  --> src/tests.rs:6:19
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut buf = String::new();
[INFO] [stdout]   |                   ^^^^^^ use of undeclared type `String`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `String` in this scope
[INFO] [stdout]   --> src/tests.rs:68:19
[INFO] [stdout]    |
[INFO] [stdout] 68 |     let mut buf = String::new();
[INFO] [stdout]    |                   ^^^^^^ use of undeclared type `String`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sizef` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "0ca0a817587fda1b4647ccd11cb0e256ad7a93ec16678a866f351b01569cbe93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ca0a817587fda1b4647ccd11cb0e256ad7a93ec16678a866f351b01569cbe93", kill_on_drop: false }`
[INFO] [stdout] 0ca0a817587fda1b4647ccd11cb0e256ad7a93ec16678a866f351b01569cbe93
