[INFO] fetching crate string-join 0.1.2...
[INFO] testing string-join-0.1.2 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate string-join 0.1.2 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate string-join 0.1.2
[INFO] finished tweaking crates.io crate string-join 0.1.2
[INFO] tweaked toml for crates.io crate string-join 0.1.2 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate string-join 0.1.2 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-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] be65dc073c9e8627468fee0ab59186284793b62b2f846151d80477d5a0738ece
[INFO] running `Command { std: "docker" "start" "-a" "be65dc073c9e8627468fee0ab59186284793b62b2f846151d80477d5a0738ece", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be65dc073c9e8627468fee0ab59186284793b62b2f846151d80477d5a0738ece", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be65dc073c9e8627468fee0ab59186284793b62b2f846151d80477d5a0738ece", kill_on_drop: false }`
[INFO] [stdout] be65dc073c9e8627468fee0ab59186284793b62b2f846151d80477d5a0738ece
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c04783b61f63146d8627de1f5803cfa717407c5c744916101bece1fac9aee952
[INFO] running `Command { std: "docker" "start" "-a" "c04783b61f63146d8627de1f5803cfa717407c5c744916101bece1fac9aee952", kill_on_drop: false }`
[INFO] [stderr]    Compiling string-join v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "c04783b61f63146d8627de1f5803cfa717407c5c744916101bece1fac9aee952", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c04783b61f63146d8627de1f5803cfa717407c5c744916101bece1fac9aee952", kill_on_drop: false }`
[INFO] [stdout] c04783b61f63146d8627de1f5803cfa717407c5c744916101bece1fac9aee952
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 66730aa49eefa8dc3b5866d88cf7f0771e4e4cf3611aa832e4eab8ebbe79f8ab
[INFO] running `Command { std: "docker" "start" "-a" "66730aa49eefa8dc3b5866d88cf7f0771e4e4cf3611aa832e4eab8ebbe79f8ab", kill_on_drop: false }`
[INFO] [stderr]    Compiling string-join v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "66730aa49eefa8dc3b5866d88cf7f0771e4e4cf3611aa832e4eab8ebbe79f8ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66730aa49eefa8dc3b5866d88cf7f0771e4e4cf3611aa832e4eab8ebbe79f8ab", kill_on_drop: false }`
[INFO] [stdout] 66730aa49eefa8dc3b5866d88cf7f0771e4e4cf3611aa832e4eab8ebbe79f8ab
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a44760af9e20a3a20b251654dbcc9044c353121867beb7cd407e8114b3def9a9
[INFO] running `Command { std: "docker" "start" "-a" "a44760af9e20a3a20b251654dbcc9044c353121867beb7cd407e8114b3def9a9", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/string_join-9f1631cf47ab4170)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test as_ref::tests::join_hashset ... ok
[INFO] [stdout] test as_ref::tests::join_with_borrowed_string ... ok
[INFO] [stdout] test as_ref::tests::join_with_cow_string ... ok
[INFO] [stdout] test display::tests::join_hashset ... ok
[INFO] [stdout] test display::tests::join_with_cow_string ... ok
[INFO] [stdout] test display::tests::join_with_borrowed_string ... ok
[INFO] [stdout] test display::tests::join_with_heap_string ... ok
[INFO] [stdout] test display::tests::write_join_to_file ... ok
[INFO] [stdout] test as_ref::tests::write_join_to_file ... ok
[INFO] [stdout] test as_ref::tests::join_with_heap_string ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests string_join
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 15) - compile ... ok
[INFO] [stdout] test src/lib.rs - (line 7) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.30s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a44760af9e20a3a20b251654dbcc9044c353121867beb7cd407e8114b3def9a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a44760af9e20a3a20b251654dbcc9044c353121867beb7cd407e8114b3def9a9", kill_on_drop: false }`
[INFO] [stdout] a44760af9e20a3a20b251654dbcc9044c353121867beb7cd407e8114b3def9a9