[INFO] fetching crate grrs2219 0.1.0...
[INFO] testing grrs2219-0.1.0 against beta-2026-01-20 for beta-1.94-1
[INFO] extracting crate grrs2219 0.1.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate grrs2219 0.1.0
[INFO] finished tweaking crates.io crate grrs2219 0.1.0
[INFO] tweaked toml for crates.io crate grrs2219 0.1.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate grrs2219 0.1.0 on toolchain beta-2026-01-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate grrs2219 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-2026-01-20" "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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f697aa5a0ea944d73322a148157604738d0140a8544479775a30c9d45de6a20f
[INFO] running `Command { std: "docker" "start" "-a" "f697aa5a0ea944d73322a148157604738d0140a8544479775a30c9d45de6a20f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f697aa5a0ea944d73322a148157604738d0140a8544479775a30c9d45de6a20f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f697aa5a0ea944d73322a148157604738d0140a8544479775a30c9d45de6a20f", kill_on_drop: false }`
[INFO] [stdout] f697aa5a0ea944d73322a148157604738d0140a8544479775a30c9d45de6a20f
[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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1cf4eb3e7f1886b6c42f057551f3225ea8e41b5cd08a272e1ec98cede122169a
[INFO] running `Command { std: "docker" "start" "-a" "1cf4eb3e7f1886b6c42f057551f3225ea8e41b5cd08a272e1ec98cede122169a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.138
[INFO] [stderr]    Compiling io-lifetimes v1.0.3
[INFO] [stderr]    Compiling rustix v0.36.4
[INFO] [stderr]    Compiling syn v1.0.105
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling linux-raw-sys v0.1.3
[INFO] [stderr]    Compiling predicates-core v1.0.5
[INFO] [stderr]    Compiling portable-atomic v0.3.15
[INFO] [stderr]    Compiling termtree v0.4.0
[INFO] [stderr]    Compiling unicode-width v0.1.10
[INFO] [stderr]    Compiling globwalk v0.8.1
[INFO] [stderr]    Compiling number_prefix v0.4.0
[INFO] [stderr]    Compiling predicates-tree v1.0.7
[INFO] [stderr]    Compiling float-cmp v0.9.0
[INFO] [stderr]    Compiling terminal_size v0.1.17
[INFO] [stderr]    Compiling tempfile v3.3.0
[INFO] [stderr]    Compiling wait-timeout v0.2.0
[INFO] [stderr]    Compiling predicates v2.1.4
[INFO] [stderr]    Compiling console v0.15.2
[INFO] [stderr]    Compiling assert_cmd v2.0.7
[INFO] [stderr]    Compiling assert_fs v1.0.10
[INFO] [stderr]    Compiling indicatif v0.17.2
[INFO] [stderr]    Compiling is-terminal v0.4.1
[INFO] [stderr]    Compiling env_logger v0.10.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling clap_derive v4.0.21
[INFO] [stderr]    Compiling clap v4.0.29
[INFO] [stderr]    Compiling grrs2219 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: found module declaration for lib.rs
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | mod lib;
[INFO] [stdout]   | ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: lib.rs is the root of this crate's library target
[INFO] [stdout]   = help: to refer to it from other targets, use the library's name as the path
[INFO] [stdout]   = note: `#[warn(special_module_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `info` and `warn`
[INFO] [stdout]  --> src/main.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | use log::{info, warn};
[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 import: `std::io`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     find_matches(&content, &args.pattern, &mut std::io::stdout());
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[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] 23 |     let _ = find_matches(&content, &args.pattern, &mut std::io::stdout());
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.64s
[INFO] running `Command { std: "docker" "inspect" "1cf4eb3e7f1886b6c42f057551f3225ea8e41b5cd08a272e1ec98cede122169a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cf4eb3e7f1886b6c42f057551f3225ea8e41b5cd08a272e1ec98cede122169a", kill_on_drop: false }`
[INFO] [stdout] 1cf4eb3e7f1886b6c42f057551f3225ea8e41b5cd08a272e1ec98cede122169a
[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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f17719ff3856f0ed8938dc4e04528171a1461f3fbb6fa01816121f8bdc83df2a
[INFO] running `Command { std: "docker" "start" "-a" "f17719ff3856f0ed8938dc4e04528171a1461f3fbb6fa01816121f8bdc83df2a", kill_on_drop: false }`
[INFO] [stderr]    Compiling grrs2219 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: found module declaration for lib.rs
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | mod lib;
[INFO] [stdout]   | ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: lib.rs is the root of this crate's library target
[INFO] [stdout]   = help: to refer to it from other targets, use the library's name as the path
[INFO] [stdout]   = note: `#[warn(special_module_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `info` and `warn`
[INFO] [stdout]  --> src/main.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | use log::{info, warn};
[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 import: `std::io`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     find_matches(&content, &args.pattern, &mut std::io::stdout());
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[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] 23 |     let _ = find_matches(&content, &args.pattern, &mut std::io::stdout());
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: found module declaration for lib.rs
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | mod lib;
[INFO] [stdout]   | ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: lib.rs is the root of this crate's library target
[INFO] [stdout]   = help: to refer to it from other targets, use the library's name as the path
[INFO] [stdout]   = note: `#[warn(special_module_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `info` and `warn`
[INFO] [stdout]  --> src/main.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | use log::{info, warn};
[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 import: `std::io`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     find_matches("lorem ipsum\ndolor sit amet", "lorem", &mut result);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[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] 20 |     let _ = find_matches("lorem ipsum\ndolor sit amet", "lorem", &mut result);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     find_matches(&content, &args.pattern, &mut std::io::stdout());
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[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] 23 |     let _ = find_matches(&content, &args.pattern, &mut std::io::stdout());
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     find_matches("lorem ipsum\ndolor sit amet", "lorem", &mut result);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let _ = find_matches("lorem ipsum\ndolor sit amet", "lorem", &mut result);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.10s
[INFO] running `Command { std: "docker" "inspect" "f17719ff3856f0ed8938dc4e04528171a1461f3fbb6fa01816121f8bdc83df2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f17719ff3856f0ed8938dc4e04528171a1461f3fbb6fa01816121f8bdc83df2a", kill_on_drop: false }`
[INFO] [stdout] f17719ff3856f0ed8938dc4e04528171a1461f3fbb6fa01816121f8bdc83df2a
[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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ed3c6e2bb92a16c3c52720e16592c9362500d6072ca6ae67f0cceeb825d19b75
[INFO] running `Command { std: "docker" "start" "-a" "ed3c6e2bb92a16c3c52720e16592c9362500d6072ca6ae67f0cceeb825d19b75", kill_on_drop: false }`
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stdout] 
[INFO] [stderr]   --> src/lib.rs:20:5
[INFO] [stdout] running 1 test
[INFO] [stderr]    |
[INFO] [stdout] test find_a_match ... ok
[INFO] [stderr] 20 |     find_matches("lorem ipsum\ndolor sit amet", "lorem", &mut result);
[INFO] [stdout] 
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] running 1 test
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout] test lib::find_a_match ... ok
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 20 |     let _ = find_matches("lorem ipsum\ndolor sit amet", "lorem", &mut result);
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    |     +++++++
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stderr] warning: `grrs2219` (lib test) generated 1 warning
[INFO] [stdout] running 3 tests
[INFO] [stderr] warning: found module declaration for lib.rs
[INFO] [stdout] test file_doesnt_exist ... FAILED
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stdout] test find_content_in_file ... FAILED
[INFO] [stderr]   |
[INFO] [stdout] test find_empty_string ... FAILED
[INFO] [stderr] 1 | mod lib;
[INFO] [stdout] 
[INFO] [stderr]   | ^^^^^^^^
[INFO] [stdout] failures:
[INFO] [stderr]   |
[INFO] [stdout] 
[INFO] [stderr]   = note: lib.rs is the root of this crate's library target
[INFO] [stdout] ---- file_doesnt_exist stdout ----
[INFO] [stderr]   = help: to refer to it from other targets, use the library's name as the path
[INFO] [stdout] Error: CargoError { cause: Some(NotFoundError { path: "/opt/rustwide/target/debug/grrs" }) }
[INFO] [stderr]   = note: `#[warn(special_module_name)]` on by default
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] ---- find_content_in_file stdout ----
[INFO] [stderr] warning: unused imports: `info` and `warn`
[INFO] [stdout] Error: CargoError { cause: Some(NotFoundError { path: "/opt/rustwide/target/debug/grrs" }) }
[INFO] [stderr]  --> src/main.rs:6:11
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stdout] ---- find_empty_string stdout ----
[INFO] [stderr] 6 | use log::{info, warn};
[INFO] [stdout] Error: CargoError { cause: Some(NotFoundError { path: "/opt/rustwide/target/debug/grrs" }) }
[INFO] [stderr]   |           ^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stdout] 
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] failures:
[INFO] [stderr] 
[INFO] [stdout]     file_doesnt_exist
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stdout]     find_content_in_file
[INFO] [stderr]  --> src/main.rs:7:5
[INFO] [stdout]     find_empty_string
[INFO] [stderr]   |
[INFO] [stdout] 
[INFO] [stderr] 7 | use std::io;
[INFO] [stdout] test result: FAILED. 0 passed; 3 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/main.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     find_matches(&content, &args.pattern, &mut std::io::stdout());
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[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] 23 |     let _ = find_matches(&content, &args.pattern, &mut std::io::stdout());
[INFO] [stderr]    |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/lib.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     find_matches("lorem ipsum\ndolor sit amet", "lorem", &mut result);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 20 |     let _ = find_matches("lorem ipsum\ndolor sit amet", "lorem", &mut result);
[INFO] [stderr]    |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `grrs2219` (bin "grrs2219") generated 4 warnings (run `cargo fix --bin "grrs2219" -p grrs2219` to apply 2 suggestions)
[INFO] [stderr] warning: `grrs2219` (bin "grrs2219" test) generated 5 warnings (4 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/grrs2219-c2ac4b0eb05154e6)
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/grrs2219-bd1cb70f4ff572e2)
[INFO] [stderr]      Running tests/cli.rs (/opt/rustwide/target/debug/deps/cli-3f578f0764374443)
[INFO] [stderr] error: test failed, to rerun pass `--test cli`
[INFO] running `Command { std: "docker" "inspect" "ed3c6e2bb92a16c3c52720e16592c9362500d6072ca6ae67f0cceeb825d19b75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed3c6e2bb92a16c3c52720e16592c9362500d6072ca6ae67f0cceeb825d19b75", kill_on_drop: false }`
[INFO] [stdout] ed3c6e2bb92a16c3c52720e16592c9362500d6072ca6ae67f0cceeb825d19b75
