[INFO] fetching crate sparseio 0.0.1...
[INFO] testing sparseio-0.0.1 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate sparseio 0.0.1 into /workspace/builds/worker-3-tc2/source
[INFO] removed /workspace/builds/worker-3-tc2/source/.cargo/config.toml
[INFO] started tweaking crates.io crate sparseio 0.0.1
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate sparseio 0.0.1
[INFO] tweaked toml for crates.io crate sparseio 0.0.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate sparseio 0.0.1 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 sparseio 0.0.1 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-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dfffbf9a437b065017c9215c24f32aba89232e5cd169b151c356543b378d9ebb
[INFO] running `Command { std: "docker" "start" "-a" "dfffbf9a437b065017c9215c24f32aba89232e5cd169b151c356543b378d9ebb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dfffbf9a437b065017c9215c24f32aba89232e5cd169b151c356543b378d9ebb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfffbf9a437b065017c9215c24f32aba89232e5cd169b151c356543b378d9ebb", kill_on_drop: false }`
[INFO] [stdout] dfffbf9a437b065017c9215c24f32aba89232e5cd169b151c356543b378d9ebb
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0a3018114d4c80f299d5a0420cac31bcc65d45fc56d580dca21c9d0ed6d0e99b
[INFO] running `Command { std: "docker" "start" "-a" "0a3018114d4c80f299d5a0420cac31bcc65d45fc56d580dca21c9d0ed6d0e99b", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-sink v0.3.32
[INFO] [stderr]    Compiling futures-macro v0.3.32
[INFO] [stderr]    Compiling tokio-macros v2.7.0
[INFO] [stderr]    Compiling futures-channel v0.3.32
[INFO] [stderr]    Compiling futures-util v0.3.32
[INFO] [stderr]    Compiling tokio v1.51.0
[INFO] [stderr]    Compiling futures-executor v0.3.32
[INFO] [stderr]    Compiling futures v0.3.32
[INFO] [stderr]    Compiling sparseio v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.95s
[INFO] running `Command { std: "docker" "inspect" "0a3018114d4c80f299d5a0420cac31bcc65d45fc56d580dca21c9d0ed6d0e99b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a3018114d4c80f299d5a0420cac31bcc65d45fc56d580dca21c9d0ed6d0e99b", kill_on_drop: false }`
[INFO] [stdout] 0a3018114d4c80f299d5a0420cac31bcc65d45fc56d580dca21c9d0ed6d0e99b
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c5bb0ed67bab9a506c38b30ed42613b731d98f0b461a533d83fe53c7ce024a42
[INFO] running `Command { std: "docker" "start" "-a" "c5bb0ed67bab9a506c38b30ed42613b731d98f0b461a533d83fe53c7ce024a42", kill_on_drop: false }`
[INFO] [stderr]    Compiling tracing-core v0.1.36
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling socket2 v0.6.3
[INFO] [stderr]    Compiling mio v1.2.0
[INFO] [stderr]    Compiling zerocopy v0.8.48
[INFO] [stderr]    Compiling http-body v1.0.1
[INFO] [stderr]    Compiling anstyle-parse v1.0.0
[INFO] [stderr]    Compiling tokio-macros v2.7.0
[INFO] [stderr]    Compiling futures-macro v0.3.32
[INFO] [stderr]    Compiling colorchoice v1.0.5
[INFO] [stderr]    Compiling regex-automata v0.4.14
[INFO] [stderr]    Compiling form_urlencoded v1.2.2
[INFO] [stderr]    Compiling clap_derive v4.6.0
[INFO] [stderr]    Compiling assert-json-diff v2.0.2
[INFO] [stderr]    Compiling async-stream-impl v0.3.6
[INFO] [stderr]    Compiling colored v3.1.1
[INFO] [stderr]    Compiling http-body-util v0.1.3
[INFO] [stderr]    Compiling anstream v1.0.0
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling similar v2.7.0
[INFO] [stderr]    Compiling tempfile v3.27.0
[INFO] [stderr]    Compiling tracing v0.1.44
[INFO] [stderr]    Compiling tracing-log v0.2.0
[INFO] [stderr]    Compiling clap_builder v4.6.0
[INFO] [stderr]    Compiling async-stream v0.3.6
[INFO] [stderr]    Compiling tracing-subscriber v0.3.23
[INFO] [stderr]    Compiling tokio v1.51.0
[INFO] [stderr]    Compiling futures-util v0.3.32
[INFO] [stderr]    Compiling regex v1.12.3
[INFO] [stderr]    Compiling clap v4.6.0
[INFO] [stderr]    Compiling futures-executor v0.3.32
[INFO] [stderr]    Compiling futures v0.3.32
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.9.2
[INFO] [stderr]    Compiling tokio-util v0.7.18
[INFO] [stderr]    Compiling sparseio v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling h2 v0.4.13
[INFO] [stderr]    Compiling hyper v1.9.0
[INFO] [stderr]    Compiling hyper-util v0.1.20
[INFO] [stderr]    Compiling mockito v1.7.2
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 31.22s
[INFO] running `Command { std: "docker" "inspect" "c5bb0ed67bab9a506c38b30ed42613b731d98f0b461a533d83fe53c7ce024a42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5bb0ed67bab9a506c38b30ed42613b731d98f0b461a533d83fe53c7ce024a42", kill_on_drop: false }`
[INFO] [stdout] c5bb0ed67bab9a506c38b30ed42613b731d98f0b461a533d83fe53c7ce024a42
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a2f853673783b6b3a3190bc338cbd114236f26de407a9f30e0dc139ad91b90a4
[INFO] running `Command { std: "docker" "start" "-a" "a2f853673783b6b3a3190bc338cbd114236f26de407a9f30e0dc139ad91b90a4", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/sparseio-d5fb37ef080e586c)
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test coverage::tests::get_returns_the_latest_range_starting_at_or_before_target ... ok
[INFO] [stdout] test tests::len_is_cached_by_default ... ok
[INFO] [stdout] test tests::inflight_errors_preserve_error_kind ... ok
[INFO] [stdout] test coverage::tests::insert_keeps_exact_endpoints_without_inventing_overlap_rules ... ok
[INFO] [stdout] test viewer::tests::cursor_advances_after_tail_reads ... ok
[INFO] [stdout] test viewer::tests::read_reads_across_chunk_boundaries_from_unaligned_cursor ... ok
[INFO] [stdout] test viewer::tests::to_bytestream_can_be_dropped_early ... ok
[INFO] [stdout] test viewer::tests::read_zero_fills_past_end_of_object ... ok
[INFO] [stdout] test viewer::tests::seek_to_eof_succeeds_but_seek_past_eof_fails ... ok
[INFO] [stdout] test viewer::tests::mixed_cached_and_uncached_reads_return_contiguous_fixture_bytes ... ok
[INFO] [stdout] test viewer::tests::to_bytestream_streams_from_cursor_to_eof_and_advances_cursor ... ok
[INFO] [stdout] test viewer::tests::stream_errors_surface_after_the_first_successful_chunk ... ok
[INFO] [stdout] test viewer::tests::zero_length_buffers_return_immediately_without_moving_cursor ... ok
[INFO] [stdout] test tests::len_is_prefetched_during_build ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/core.rs (/opt/rustwide/target/debug/deps/core-c8815cd4142163c0)
[INFO] [stderr]      Running tests/file.rs (/opt/rustwide/target/debug/deps/file-de9f2767ed6894e8)
[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] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stderr]      Running tests/harness.rs (/opt/rustwide/target/debug/deps/harness-2dc6ba68bcfc17dd)
[INFO] [stdout] test result: ok. 0 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] [stderr]      Running tests/http.rs (/opt/rustwide/target/debug/deps/http-41d147a4ae5d974c)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests sparseio
[INFO] [stdout] test result: ok. 0 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" "a2f853673783b6b3a3190bc338cbd114236f26de407a9f30e0dc139ad91b90a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2f853673783b6b3a3190bc338cbd114236f26de407a9f30e0dc139ad91b90a4", kill_on_drop: false }`
[INFO] [stdout] a2f853673783b6b3a3190bc338cbd114236f26de407a9f30e0dc139ad91b90a4
