[INFO] fetching crate ser-write 0.4.0...
[INFO] testing ser-write-0.4.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate ser-write 0.4.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate ser-write 0.4.0
[INFO] finished tweaking crates.io crate ser-write 0.4.0
[INFO] tweaked toml for crates.io crate ser-write 0.4.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ser-write 0.4.0 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 ser-write 0.4.0 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] 4c5757297f353e6446432257e937df917f4fbe726eb642f4486f924e0791454c
[INFO] running `Command { std: "docker" "start" "-a" "4c5757297f353e6446432257e937df917f4fbe726eb642f4486f924e0791454c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4c5757297f353e6446432257e937df917f4fbe726eb642f4486f924e0791454c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c5757297f353e6446432257e937df917f4fbe726eb642f4486f924e0791454c", kill_on_drop: false }`
[INFO] [stdout] 4c5757297f353e6446432257e937df917f4fbe726eb642f4486f924e0791454c
[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] 7d2dffa391eda0c9a5183261ac3a80c8925ce5857ea6c3b65c0bc5f9b82a9366
[INFO] running `Command { std: "docker" "start" "-a" "7d2dffa391eda0c9a5183261ac3a80c8925ce5857ea6c3b65c0bc5f9b82a9366", kill_on_drop: false }`
[INFO] [stderr]    Compiling ser-write v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "7d2dffa391eda0c9a5183261ac3a80c8925ce5857ea6c3b65c0bc5f9b82a9366", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d2dffa391eda0c9a5183261ac3a80c8925ce5857ea6c3b65c0bc5f9b82a9366", kill_on_drop: false }`
[INFO] [stdout] 7d2dffa391eda0c9a5183261ac3a80c8925ce5857ea6c3b65c0bc5f9b82a9366
[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] a12d7e4d0bdd88bd8c16eca1a0d56e140baff3a4b2df3f818fd3871d93d59c8b
[INFO] running `Command { std: "docker" "start" "-a" "a12d7e4d0bdd88bd8c16eca1a0d56e140baff3a4b2df3f818fd3871d93d59c8b", kill_on_drop: false }`
[INFO] [stderr]    Compiling ser-write v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "a12d7e4d0bdd88bd8c16eca1a0d56e140baff3a4b2df3f818fd3871d93d59c8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a12d7e4d0bdd88bd8c16eca1a0d56e140baff3a4b2df3f818fd3871d93d59c8b", kill_on_drop: false }`
[INFO] [stdout] a12d7e4d0bdd88bd8c16eca1a0d56e140baff3a4b2df3f818fd3871d93d59c8b
[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] 46b985bce38005b7e4e6012ed20d2eafa6d7f527a0b3be10af4f6bd2714ccc8c
[INFO] running `Command { std: "docker" "start" "-a" "46b985bce38005b7e4e6012ed20d2eafa6d7f527a0b3be10af4f6bd2714ccc8c", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ser_write-fe87d61a21ae500b)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test foreign::tests::test_ser_write_vec ... ok
[INFO] [stdout] test foreign::tests::test_ser_write_cursor ... ok
[INFO] [stdout] test foreign::tests::test_ser_write_vec_deque ... ok
[INFO] [stderr]    Doc-tests ser_write
[INFO] [stdout] test tests::test_slice_writer ... ok
[INFO] [stdout] test tests::test_ser_error ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[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" "46b985bce38005b7e4e6012ed20d2eafa6d7f527a0b3be10af4f6bd2714ccc8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46b985bce38005b7e4e6012ed20d2eafa6d7f527a0b3be10af4f6bd2714ccc8c", kill_on_drop: false }`
[INFO] [stdout] 46b985bce38005b7e4e6012ed20d2eafa6d7f527a0b3be10af4f6bd2714ccc8c
