[INFO] fetching crate simple-string-builder 0.2.0...
[INFO] testing simple-string-builder-0.2.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate simple-string-builder 0.2.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate simple-string-builder 0.2.0
[INFO] finished tweaking crates.io crate simple-string-builder 0.2.0
[INFO] tweaked toml for crates.io crate simple-string-builder 0.2.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate simple-string-builder 0.2.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "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] ca7acdc6eaa7e77a02e1018636c0f40af91b445377f83273f90ab961fa055fba
[INFO] running `Command { std: "docker" "start" "-a" "ca7acdc6eaa7e77a02e1018636c0f40af91b445377f83273f90ab961fa055fba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca7acdc6eaa7e77a02e1018636c0f40af91b445377f83273f90ab961fa055fba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca7acdc6eaa7e77a02e1018636c0f40af91b445377f83273f90ab961fa055fba", kill_on_drop: false }`
[INFO] [stdout] ca7acdc6eaa7e77a02e1018636c0f40af91b445377f83273f90ab961fa055fba
[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] 730873d3e43768c8b92a3cd2c3d772fa6f412c960ee5aaa19c4fbd97471a0e88
[INFO] running `Command { std: "docker" "start" "-a" "730873d3e43768c8b92a3cd2c3d772fa6f412c960ee5aaa19c4fbd97471a0e88", kill_on_drop: false }`
[INFO] [stderr]    Compiling simple-string-builder v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `Command { std: "docker" "inspect" "730873d3e43768c8b92a3cd2c3d772fa6f412c960ee5aaa19c4fbd97471a0e88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "730873d3e43768c8b92a3cd2c3d772fa6f412c960ee5aaa19c4fbd97471a0e88", kill_on_drop: false }`
[INFO] [stdout] 730873d3e43768c8b92a3cd2c3d772fa6f412c960ee5aaa19c4fbd97471a0e88
[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] e80bc057be77d69e6369753acc3b1243faec81d3e128c358df5f44dfec41ab82
[INFO] running `Command { std: "docker" "start" "-a" "e80bc057be77d69e6369753acc3b1243faec81d3e128c358df5f44dfec41ab82", kill_on_drop: false }`
[INFO] [stderr]    Compiling simple-string-builder v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "e80bc057be77d69e6369753acc3b1243faec81d3e128c358df5f44dfec41ab82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e80bc057be77d69e6369753acc3b1243faec81d3e128c358df5f44dfec41ab82", kill_on_drop: false }`
[INFO] [stdout] e80bc057be77d69e6369753acc3b1243faec81d3e128c358df5f44dfec41ab82
[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] 6624b160bab7fc0af141db509936c0ad0c0888cd78a6fedd936cfdb2009c1fdf
[INFO] running `Command { std: "docker" "start" "-a" "6624b160bab7fc0af141db509936c0ad0c0888cd78a6fedd936cfdb2009c1fdf", 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/simple_string_builder-13a9efbe863bdc91)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_string ... 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] [stderr]    Doc-tests simple_string_builder
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - Builder (line 9) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - Builder (line 9) stdout ----
[INFO] [stdout] error: expected item, found keyword `let`
[INFO] [stdout]  --> src/lib.rs:10:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | let name = "quinn".to_string();
[INFO] [stdout]   | ^^^
[INFO] [stdout]   | |
[INFO] [stdout]   | `let` cannot be used for global variables
[INFO] [stdout]   | help: consider using `static` or `const` instead of `let`
[INFO] [stdout]   |
[INFO] [stdout]   = note: for a full list of items that can appear in modules, see <https://doc.rust-lang.org/reference/items.html>
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - Builder (line 9)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6624b160bab7fc0af141db509936c0ad0c0888cd78a6fedd936cfdb2009c1fdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6624b160bab7fc0af141db509936c0ad0c0888cd78a6fedd936cfdb2009c1fdf", kill_on_drop: false }`
[INFO] [stdout] 6624b160bab7fc0af141db509936c0ad0c0888cd78a6fedd936cfdb2009c1fdf