[INFO] fetching crate cpp_streams 0.1.0...
[INFO] testing cpp_streams-0.1.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate cpp_streams 0.1.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate cpp_streams 0.1.0
[INFO] finished tweaking crates.io crate cpp_streams 0.1.0
[INFO] tweaked toml for crates.io crate cpp_streams 0.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate cpp_streams 0.1.0 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] crate crates.io crate cpp_streams 0.1.0 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-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a8d7379695827a9f258f64f8dca61bbd3e90f35b1623c1bb86f86ede48b85754
[INFO] running `Command { std: "docker" "start" "-a" "a8d7379695827a9f258f64f8dca61bbd3e90f35b1623c1bb86f86ede48b85754", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8d7379695827a9f258f64f8dca61bbd3e90f35b1623c1bb86f86ede48b85754", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8d7379695827a9f258f64f8dca61bbd3e90f35b1623c1bb86f86ede48b85754", kill_on_drop: false }`
[INFO] [stdout] a8d7379695827a9f258f64f8dca61bbd3e90f35b1623c1bb86f86ede48b85754
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 094af2eeb1284126d9d448efb3377effb55d23a2f63050437e5e80d1ea8be20f
[INFO] running `Command { std: "docker" "start" "-a" "094af2eeb1284126d9d448efb3377effb55d23a2f63050437e5e80d1ea8be20f", kill_on_drop: false }`
[INFO] [stderr]    Compiling cpp_streams v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/lib.rs:1:56
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{ops::Shl, ops::Shr, fmt::Display, io::{self, Read}};
[INFO] [stdout]   |                                                        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `Command { std: "docker" "inspect" "094af2eeb1284126d9d448efb3377effb55d23a2f63050437e5e80d1ea8be20f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "094af2eeb1284126d9d448efb3377effb55d23a2f63050437e5e80d1ea8be20f", kill_on_drop: false }`
[INFO] [stdout] 094af2eeb1284126d9d448efb3377effb55d23a2f63050437e5e80d1ea8be20f
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ace99965d186f99ca0f9cdb2d008917b5880f6ee967ca2f257225b3d7044b830
[INFO] running `Command { std: "docker" "start" "-a" "ace99965d186f99ca0f9cdb2d008917b5880f6ee967ca2f257225b3d7044b830", kill_on_drop: false }`
[INFO] [stderr]    Compiling cpp_streams v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/lib.rs:1:56
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{ops::Shl, ops::Shr, fmt::Display, io::{self, Read}};
[INFO] [stdout]   |                                                        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused bitwise operation that must be used
[INFO] [stdout]  --> examples/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     cin >> &mut input;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^ the bitwise operation produces a value
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let _ = cin >> &mut input;
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused bitwise operation that must be used
[INFO] [stdout]  --> examples/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     cout << "Hello, world!\n" << "Other string\n" << input << "\n" << 1 << 1.0 << endl;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the bitwise operation produces a value
[INFO] [stdout]   |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let _ = cout << "Hello, world!\n" << "Other string\n" << input << "\n" << 1 << 1.0 << endl;
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/lib.rs:1:56
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{ops::Shl, ops::Shr, fmt::Display, io::{self, Read}};
[INFO] [stdout]   |                                                        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "ace99965d186f99ca0f9cdb2d008917b5880f6ee967ca2f257225b3d7044b830", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ace99965d186f99ca0f9cdb2d008917b5880f6ee967ca2f257225b3d7044b830", kill_on_drop: false }`
[INFO] [stdout] ace99965d186f99ca0f9cdb2d008917b5880f6ee967ca2f257225b3d7044b830
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 020a73962a6ff0f312234a7abe4695586616c2653c846312ef28fa7fd432ad14
[INFO] running `Command { std: "docker" "start" "-a" "020a73962a6ff0f312234a7abe4695586616c2653c846312ef28fa7fd432ad14", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `Read`
[INFO] [stderr]  --> src/lib.rs:1:56
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{ops::Shl, ops::Shr, fmt::Display, io::{self, Read}};
[INFO] [stderr]   |                                                        ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `cpp_streams` (lib) generated 1 warning (run `cargo fix --lib -p cpp_streams` to apply 1 suggestion)
[INFO] [stderr] warning: unused bitwise operation that must be used
[INFO] [stderr]  --> examples/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     cin >> &mut input;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^ the bitwise operation produces a value
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let _ = cin >> &mut input;
[INFO] [stderr]   |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused bitwise operation that must be used
[INFO] [stderr]  --> examples/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     cout << "Hello, world!\n" << "Other string\n" << input << "\n" << 1 << 1.0 << endl;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the bitwise operation produces a value
[INFO] [stderr]   |
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let _ = cout << "Hello, world!\n" << "Other string\n" << input << "\n" << 1 << 1.0 << endl;
[INFO] [stderr]   |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `cpp_streams` (example "main") generated 2 warnings
[INFO] [stderr] warning: `cpp_streams` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/cpp_streams-a85a231b90acbd6b)
[INFO] [stderr]    Doc-tests cpp_streams
[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] [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" "020a73962a6ff0f312234a7abe4695586616c2653c846312ef28fa7fd432ad14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "020a73962a6ff0f312234a7abe4695586616c2653c846312ef28fa7fd432ad14", kill_on_drop: false }`
[INFO] [stdout] 020a73962a6ff0f312234a7abe4695586616c2653c846312ef28fa7fd432ad14