[INFO] fetching crate unix_exec_piper 0.1.4...
[INFO] testing unix_exec_piper-0.1.4 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate unix_exec_piper 0.1.4 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate unix_exec_piper 0.1.4
[INFO] finished tweaking crates.io crate unix_exec_piper 0.1.4
[INFO] tweaked toml for crates.io crate unix_exec_piper 0.1.4 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate unix_exec_piper 0.1.4 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate unix_exec_piper 0.1.4 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-2025-10-28" "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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f33604e9ea296599858fd14df1c3e6a36f661af97482fae54bc6852242bad2d6
[INFO] running `Command { std: "docker" "start" "-a" "f33604e9ea296599858fd14df1c3e6a36f661af97482fae54bc6852242bad2d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f33604e9ea296599858fd14df1c3e6a36f661af97482fae54bc6852242bad2d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f33604e9ea296599858fd14df1c3e6a36f661af97482fae54bc6852242bad2d6", kill_on_drop: false }`
[INFO] [stdout] f33604e9ea296599858fd14df1c3e6a36f661af97482fae54bc6852242bad2d6
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 35c5368fa1f65eb8080017611891f13682f2bd31e1ceddb0b16d7a7306635084
[INFO] running `Command { std: "docker" "start" "-a" "35c5368fa1f65eb8080017611891f13682f2bd31e1ceddb0b16d7a7306635084", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling errno v0.2.6
[INFO] [stderr]    Compiling unix_exec_piper v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:132:41
[INFO] [stdout]     |
[INFO] [stdout] 132 |             let exited_normally: bool = unsafe { libc::WIFEXITED(status_code) };
[INFO] [stdout]     |                                         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:144:46
[INFO] [stdout]     |
[INFO] [stdout] 144 |                 let exit_code: libc::c_int = unsafe { libc::WEXITSTATUS(status_code) };
[INFO] [stdout]     |                                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.12s
[INFO] running `Command { std: "docker" "inspect" "35c5368fa1f65eb8080017611891f13682f2bd31e1ceddb0b16d7a7306635084", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35c5368fa1f65eb8080017611891f13682f2bd31e1ceddb0b16d7a7306635084", kill_on_drop: false }`
[INFO] [stdout] 35c5368fa1f65eb8080017611891f13682f2bd31e1ceddb0b16d7a7306635084
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cea2f2c1dddcd492093a2f57f78ed775a257328d1066292f6fec2d0d39e8df63
[INFO] running `Command { std: "docker" "start" "-a" "cea2f2c1dddcd492093a2f57f78ed775a257328d1066292f6fec2d0d39e8df63", kill_on_drop: false }`
[INFO] [stderr]    Compiling unix_exec_piper v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:132:41
[INFO] [stdout]     |
[INFO] [stdout] 132 |             let exited_normally: bool = unsafe { libc::WIFEXITED(status_code) };
[INFO] [stdout]     |                                         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:144:46
[INFO] [stdout]     |
[INFO] [stdout] 144 |                 let exit_code: libc::c_int = unsafe { libc::WEXITSTATUS(status_code) };
[INFO] [stdout]     |                                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]    --> src/libc_util.rs:122:13
[INFO] [stdout]     |
[INFO] [stdout] 122 |         let input = String::from("Hello World!");
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:132:41
[INFO] [stdout]     |
[INFO] [stdout] 132 |             let exited_normally: bool = unsafe { libc::WIFEXITED(status_code) };
[INFO] [stdout]     |                                         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:144:46
[INFO] [stdout]     |
[INFO] [stdout] 144 |                 let exit_code: libc::c_int = unsafe { libc::WEXITSTATUS(status_code) };
[INFO] [stdout]     |                                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.01s
[INFO] running `Command { std: "docker" "inspect" "cea2f2c1dddcd492093a2f57f78ed775a257328d1066292f6fec2d0d39e8df63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cea2f2c1dddcd492093a2f57f78ed775a257328d1066292f6fec2d0d39e8df63", kill_on_drop: false }`
[INFO] [stdout] cea2f2c1dddcd492093a2f57f78ed775a257328d1066292f6fec2d0d39e8df63
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b84bcbd35c6faffae417d4041c2f75b853b60d8877b6a0d317ef97fe258dfee1
[INFO] running `Command { std: "docker" "start" "-a" "b84bcbd35c6faffae417d4041c2f75b853b60d8877b6a0d317ef97fe258dfee1", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/lib.rs:132:41
[INFO] [stderr]     |
[INFO] [stderr] 132 |             let exited_normally: bool = unsafe { libc::WIFEXITED(status_code) };
[INFO] [stderr]     |                                         ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_unsafe)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/lib.rs:144:46
[INFO] [stderr]     |
[INFO] [stderr] 144 |                 let exit_code: libc::c_int = unsafe { libc::WEXITSTATUS(status_code) };
[INFO] [stderr]     |                                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: `unix_exec_piper` (lib) generated 2 warnings
[INFO] [stderr] warning: unused variable: `input`
[INFO] [stderr]    --> src/libc_util.rs:122:13
[INFO] [stderr]     |
[INFO] [stderr] 122 |         let input = String::from("Hello World!");
[INFO] [stderr]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `unix_exec_piper` (lib test) generated 3 warnings (2 duplicates) (run `cargo fix --lib -p unix_exec_piper --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/unix_exec_piper-4c5e12571cad5e53)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test libc_util::tests::test_construct_libc_cstring_arr ... ok
[INFO] [stdout] test libc_util::tests::test_construct_libc_cstring ... ok
[INFO] [stdout] 2
[INFO] [stdout] test tests::test_execute_chain ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/example.rs (/opt/rustwide/target/debug/deps/example-f585205b06505c1b)
[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]    Doc-tests unix_exec_piper
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/pipe.rs - pipe::PipeEnd (line 35) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.43s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b84bcbd35c6faffae417d4041c2f75b853b60d8877b6a0d317ef97fe258dfee1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b84bcbd35c6faffae417d4041c2f75b853b60d8877b6a0d317ef97fe258dfee1", kill_on_drop: false }`
[INFO] [stdout] b84bcbd35c6faffae417d4041c2f75b853b60d8877b6a0d317ef97fe258dfee1