[INFO] fetching crate core2 0.4.0...
[INFO] testing core2-0.4.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate core2 0.4.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate core2 0.4.0
[INFO] finished tweaking crates.io crate core2 0.4.0
[INFO] tweaked toml for crates.io crate core2 0.4.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate core2 0.4.0 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] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] adf53485e1989fb55ab559eff7a115f92eafcf6a152a1b219fb5a19cd7c56004
[INFO] running `Command { std: "docker" "start" "-a" "adf53485e1989fb55ab559eff7a115f92eafcf6a152a1b219fb5a19cd7c56004", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "adf53485e1989fb55ab559eff7a115f92eafcf6a152a1b219fb5a19cd7c56004", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adf53485e1989fb55ab559eff7a115f92eafcf6a152a1b219fb5a19cd7c56004", kill_on_drop: false }`
[INFO] [stdout] adf53485e1989fb55ab559eff7a115f92eafcf6a152a1b219fb5a19cd7c56004
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] a36f71620cca0f09d28672645b4483c73dee2b5ef7bf3d469e990254a5de6811
[INFO] running `Command { std: "docker" "start" "-a" "a36f71620cca0f09d28672645b4483c73dee2b5ef7bf3d469e990254a5de6811", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling core2 v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.97s
[INFO] running `Command { std: "docker" "inspect" "a36f71620cca0f09d28672645b4483c73dee2b5ef7bf3d469e990254a5de6811", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a36f71620cca0f09d28672645b4483c73dee2b5ef7bf3d469e990254a5de6811", kill_on_drop: false }`
[INFO] [stdout] a36f71620cca0f09d28672645b4483c73dee2b5ef7bf3d469e990254a5de6811
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] a41c41d573d5a1113ab161aebfd974581c149448a18074376a4e43e4ad654791
[INFO] running `Command { std: "docker" "start" "-a" "a41c41d573d5a1113ab161aebfd974581c149448a18074376a4e43e4ad654791", kill_on_drop: false }`
[INFO] [stderr]    Compiling core2 v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `ExampleSliceReader` is never constructed
[INFO] [stdout]    --> tests/tests.rs:286:8
[INFO] [stdout]     |
[INFO] [stdout] 286 | struct ExampleSliceReader<'a> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "a41c41d573d5a1113ab161aebfd974581c149448a18074376a4e43e4ad654791", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a41c41d573d5a1113ab161aebfd974581c149448a18074376a4e43e4ad654791", kill_on_drop: false }`
[INFO] [stdout] a41c41d573d5a1113ab161aebfd974581c149448a18074376a4e43e4ad654791
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 180ee7e7ec5e5f3aa58dc1baffbee90fff9cd07abdddc449d5375ee9ccd97f48
[INFO] running `Command { std: "docker" "start" "-a" "180ee7e7ec5e5f3aa58dc1baffbee90fff9cd07abdddc449d5375ee9ccd97f48", kill_on_drop: false }`
[INFO] [stderr] warning: struct `ExampleSliceReader` is never constructed
[INFO] [stderr]    --> tests/tests.rs:286:8
[INFO] [stderr]     |
[INFO] [stderr] 286 | struct ExampleSliceReader<'a> {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `core2` (test "tests") generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/core2-6ac9b0d19d7abd42)
[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/tests.rs (/opt/rustwide/target/debug/deps/tests-c6077169e4ea66f2)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test take_eof ... ok
[INFO] [stdout] test chain_bufread ... ok
[INFO] [stdout] test read_exact ... ok
[INFO] [stdout] test test_writer_read_from_one_buf ... ok
[INFO] [stdout] test read_exact_slice ... 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] [stderr]    Doc-tests core2
[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" "180ee7e7ec5e5f3aa58dc1baffbee90fff9cd07abdddc449d5375ee9ccd97f48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "180ee7e7ec5e5f3aa58dc1baffbee90fff9cd07abdddc449d5375ee9ccd97f48", kill_on_drop: false }`
[INFO] [stdout] 180ee7e7ec5e5f3aa58dc1baffbee90fff9cd07abdddc449d5375ee9ccd97f48
