[INFO] fetching crate pixls_grep_rust 0.1.0...
[INFO] checking pixls_grep_rust-0.1.0 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate pixls_grep_rust 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate pixls_grep_rust 0.1.0
[INFO] finished tweaking crates.io crate pixls_grep_rust 0.1.0
[INFO] tweaked toml for crates.io crate pixls_grep_rust 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate pixls_grep_rust 0.1.0 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate pixls_grep_rust 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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 02eab83a4a989bf10ed820122950630f4fc27fab93553e98354791098b04c5b3
[INFO] running `Command { std: "docker" "start" "-a" "02eab83a4a989bf10ed820122950630f4fc27fab93553e98354791098b04c5b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "02eab83a4a989bf10ed820122950630f4fc27fab93553e98354791098b04c5b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02eab83a4a989bf10ed820122950630f4fc27fab93553e98354791098b04c5b3", kill_on_drop: false }`
[INFO] [stdout] 02eab83a4a989bf10ed820122950630f4fc27fab93553e98354791098b04c5b3
[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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8a3264260f9d81550f2260588f9b9b0c6f5100e480c386cb8e3f7a9e0b69941d
[INFO] running `Command { std: "docker" "start" "-a" "8a3264260f9d81550f2260588f9b9b0c6f5100e480c386cb8e3f7a9e0b69941d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.70
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]     Checking memchr v2.6.4
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]     Checking utf8parse v0.2.1
[INFO] [stderr]    Compiling rustix v0.38.25
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking anstyle-query v1.0.0
[INFO] [stderr]     Checking linux-raw-sys v0.4.11
[INFO] [stderr]     Checking bitflags v2.4.1
[INFO] [stderr]     Checking anstyle-parse v0.2.2
[INFO] [stderr]     Checking anstyle v1.0.4
[INFO] [stderr]     Checking colorchoice v1.0.0
[INFO] [stderr]    Compiling portable-atomic v1.5.1
[INFO] [stderr]    Compiling anyhow v1.0.75
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]     Checking anstream v0.6.4
[INFO] [stderr]     Checking unicode-width v0.1.11
[INFO] [stderr]     Checking clap_lex v0.6.0
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.39
[INFO] [stderr]     Checking clap_builder v4.4.9
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]     Checking number_prefix v0.4.0
[INFO] [stderr]     Checking console v0.15.7
[INFO] [stderr]     Checking termcolor v1.4.0
[INFO] [stderr]     Checking is-terminal v0.4.9
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking indicatif v0.17.7
[INFO] [stderr]     Checking regex-automata v0.4.3
[INFO] [stderr]    Compiling clap_derive v4.4.7
[INFO] [stderr]     Checking regex v1.10.2
[INFO] [stderr]     Checking env_logger v0.10.1
[INFO] [stderr]     Checking clap v4.4.10
[INFO] [stderr]     Checking pixls_grep_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> src/lib.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 |             writeln!(writer, "{}", line);
[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)]` on by default
[INFO] [stdout]   = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> src/lib.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 |             writeln!(writer, "{}", line);
[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)]` on by default
[INFO] [stdout]   = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.28s
[INFO] running `Command { std: "docker" "inspect" "8a3264260f9d81550f2260588f9b9b0c6f5100e480c386cb8e3f7a9e0b69941d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a3264260f9d81550f2260588f9b9b0c6f5100e480c386cb8e3f7a9e0b69941d", kill_on_drop: false }`
[INFO] [stdout] 8a3264260f9d81550f2260588f9b9b0c6f5100e480c386cb8e3f7a9e0b69941d