[INFO] cloning repository https://github.com/latte488/fast
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/latte488/fast" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flatte488%2Ffast", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flatte488%2Ffast'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b608199a0ffb5cab6c8328a55469f466e3db48e5
[INFO] testing latte488/fast against beta-2026-04-21 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flatte488%2Ffast" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/latte488/fast
[INFO] finished tweaking git repo https://github.com/latte488/fast
[INFO] tweaked toml for git repo https://github.com/latte488/fast written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/latte488/fast 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 git repo https://github.com/latte488/fast 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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 7697fb2d5a2548953e294a4655bf3ad5a81c6a437a97969538c1c21e00f18e29
[INFO] running `Command { std: "docker" "start" "-a" "7697fb2d5a2548953e294a4655bf3ad5a81c6a437a97969538c1c21e00f18e29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7697fb2d5a2548953e294a4655bf3ad5a81c6a437a97969538c1c21e00f18e29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7697fb2d5a2548953e294a4655bf3ad5a81c6a437a97969538c1c21e00f18e29", kill_on_drop: false }`
[INFO] [stdout] 7697fb2d5a2548953e294a4655bf3ad5a81c6a437a97969538c1c21e00f18e29
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 92f003c74a17f0d75d87e80407e1be81c0aad9c31001c6febe6e8460a4dda745
[INFO] running `Command { std: "docker" "start" "-a" "92f003c74a17f0d75d87e80407e1be81c0aad9c31001c6febe6e8460a4dda745", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]    Compiling num-rational v0.2.3
[INFO] [stderr]    Compiling num v0.2.1
[INFO] [stderr]    Compiling socket v0.0.7
[INFO] [stderr]    Compiling fast v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: this creates a dangling pointer because temporary `CString` is dropped at end of statement
[INFO] [stdout]   --> src/socket.rs:69:14
[INFO] [stdout]    |
[INFO] [stdout] 67 |           let s = std::ffi::CString::new("")
[INFO] [stdout]    |  _________________-
[INFO] [stdout] 68 | |             .expect("CString::new faild")
[INFO] [stdout]    | |_________________________________________- this `CString` is dropped at end of statement
[INFO] [stdout] 69 |               .as_ptr();
[INFO] [stdout]    |                ^^^^^^ pointer created here
[INFO] [stdout]    |
[INFO] [stdout]    = help: bind the `CString` to a variable such that it outlives the pointer returned by `as_ptr`
[INFO] [stdout]    = note: a dangling pointer is safe, but dereferencing one is undefined behavior
[INFO] [stdout]    = note: returning a pointer to a local variable will always result in a dangling pointer
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/reference/destructors.html>
[INFO] [stdout]    = note: `#[warn(dangling_pointers_from_temporaries)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `udp`
[INFO] [stdout]  --> src/main.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let udp = fast::socket::Udp::new();
[INFO] [stdout]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_udp`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.69s
[INFO] running `Command { std: "docker" "inspect" "92f003c74a17f0d75d87e80407e1be81c0aad9c31001c6febe6e8460a4dda745", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92f003c74a17f0d75d87e80407e1be81c0aad9c31001c6febe6e8460a4dda745", kill_on_drop: false }`
[INFO] [stdout] 92f003c74a17f0d75d87e80407e1be81c0aad9c31001c6febe6e8460a4dda745
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 2b97022c4950829d08b30cb398d9b963f32fb7feb71edf2b73e70db0602bc4c7
[INFO] running `Command { std: "docker" "start" "-a" "2b97022c4950829d08b30cb398d9b963f32fb7feb71edf2b73e70db0602bc4c7", kill_on_drop: false }`
[INFO] [stderr]    Compiling fast v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: this creates a dangling pointer because temporary `CString` is dropped at end of statement
[INFO] [stdout]   --> src/socket.rs:69:14
[INFO] [stdout]    |
[INFO] [stdout] 67 |           let s = std::ffi::CString::new("")
[INFO] [stdout]    |  _________________-
[INFO] [stdout] 68 | |             .expect("CString::new faild")
[INFO] [stdout]    | |_________________________________________- this `CString` is dropped at end of statement
[INFO] [stdout] 69 |               .as_ptr();
[INFO] [stdout]    |                ^^^^^^ pointer created here
[INFO] [stdout]    |
[INFO] [stdout]    = help: bind the `CString` to a variable such that it outlives the pointer returned by `as_ptr`
[INFO] [stdout]    = note: a dangling pointer is safe, but dereferencing one is undefined behavior
[INFO] [stdout]    = note: returning a pointer to a local variable will always result in a dangling pointer
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/reference/destructors.html>
[INFO] [stdout]    = note: `#[warn(dangling_pointers_from_temporaries)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this creates a dangling pointer because temporary `CString` is dropped at end of statement
[INFO] [stdout]   --> src/socket.rs:69:14
[INFO] [stdout]    |
[INFO] [stdout] 67 |           let s = std::ffi::CString::new("")
[INFO] [stdout]    |  _________________-
[INFO] [stdout] 68 | |             .expect("CString::new faild")
[INFO] [stdout]    | |_________________________________________- this `CString` is dropped at end of statement
[INFO] [stdout] 69 |               .as_ptr();
[INFO] [stdout]    |                ^^^^^^ pointer created here
[INFO] [stdout]    |
[INFO] [stdout]    = help: bind the `CString` to a variable such that it outlives the pointer returned by `as_ptr`
[INFO] [stdout]    = note: a dangling pointer is safe, but dereferencing one is undefined behavior
[INFO] [stdout]    = note: returning a pointer to a local variable will always result in a dangling pointer
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/reference/destructors.html>
[INFO] [stdout]    = note: `#[warn(dangling_pointers_from_temporaries)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `udp`
[INFO] [stdout]  --> src/main.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let udp = fast::socket::Udp::new();
[INFO] [stdout]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_udp`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "2b97022c4950829d08b30cb398d9b963f32fb7feb71edf2b73e70db0602bc4c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b97022c4950829d08b30cb398d9b963f32fb7feb71edf2b73e70db0602bc4c7", kill_on_drop: false }`
[INFO] [stdout] 2b97022c4950829d08b30cb398d9b963f32fb7feb71edf2b73e70db0602bc4c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] e4462f9269ebe0bd3377e1590e8a3cce7e78582423307fd55758d7ff8489e396
[INFO] running `Command { std: "docker" "start" "-a" "e4462f9269ebe0bd3377e1590e8a3cce7e78582423307fd55758d7ff8489e396", kill_on_drop: false }`
[INFO] [stderr] warning: this creates a dangling pointer because temporary `CString` is dropped at end of statement
[INFO] [stderr]   --> src/socket.rs:69:14
[INFO] [stderr]    |
[INFO] [stderr] 67 |           let s = std::ffi::CString::new("")
[INFO] [stdout] 
[INFO] [stderr]    |  _________________-
[INFO] [stdout] running 0 tests
[INFO] [stderr] 68 | |             .expect("CString::new faild")
[INFO] [stdout] 
[INFO] [stderr]    | |_________________________________________- this `CString` is dropped at end of statement
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 69 |               .as_ptr();
[INFO] [stdout] 
[INFO] [stderr]    |                ^^^^^^ pointer created here
[INFO] [stderr]    |
[INFO] [stderr]    = help: bind the `CString` to a variable such that it outlives the pointer returned by `as_ptr`
[INFO] [stderr]    = note: a dangling pointer is safe, but dereferencing one is undefined behavior
[INFO] [stderr]    = note: returning a pointer to a local variable will always result in a dangling pointer
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/reference/destructors.html>
[INFO] [stderr]    = note: `#[warn(dangling_pointers_from_temporaries)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `fast` (lib) generated 1 warning
[INFO] [stderr] warning: `fast` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: unused variable: `udp`
[INFO] [stderr]  --> src/main.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let udp = fast::socket::Udp::new();
[INFO] [stderr]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_udp`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `fast` (bin "fast" test) generated 1 warning (run `cargo fix --bin "fast" -p fast --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/fast-0993ee8222575c4f)
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/fast-68c1140e33c5407f)
[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 fast
[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" "e4462f9269ebe0bd3377e1590e8a3cce7e78582423307fd55758d7ff8489e396", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4462f9269ebe0bd3377e1590e8a3cce7e78582423307fd55758d7ff8489e396", kill_on_drop: false }`
[INFO] [stdout] e4462f9269ebe0bd3377e1590e8a3cce7e78582423307fd55758d7ff8489e396
