[INFO] cloning repository https://github.com/philippkeller/rexpect
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/philippkeller/rexpect" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fphilippkeller%2Frexpect", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fphilippkeller%2Frexpect'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0ae5ce760016b6aad30ac7c16db5ce757563cb9e
[INFO] building philippkeller/rexpect against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fphilippkeller%2Frexpect" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/philippkeller/rexpect
[INFO] finished tweaking git repo https://github.com/philippkeller/rexpect
[INFO] tweaked toml for git repo https://github.com/philippkeller/rexpect written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/philippkeller/rexpect on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/philippkeller/rexpect 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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded comma v1.0.0
[INFO] [stderr]   Downloaded tempfile v3.6.0
[INFO] [stderr]   Downloaded which v8.0.0
[INFO] [stderr]   Downloaded memchr v2.6.2
[INFO] [stderr]   Downloaded regex-automata v0.3.9
[INFO] [stderr]   Downloaded regex-syntax v0.7.5
[INFO] [stderr]   Downloaded regex v1.9.6
[INFO] [stderr]   Downloaded env_home v0.1.0
[INFO] [stderr]   Downloaded winsafe v0.0.19
[INFO] [stderr]   Downloaded nix v0.30.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f7c3b828aa5c9bc28fdc01d6d0a3b86160965c0601e4dc79145683ed3453e52a
[INFO] running `Command { std: "docker" "start" "-a" "f7c3b828aa5c9bc28fdc01d6d0a3b86160965c0601e4dc79145683ed3453e52a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7c3b828aa5c9bc28fdc01d6d0a3b86160965c0601e4dc79145683ed3453e52a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7c3b828aa5c9bc28fdc01d6d0a3b86160965c0601e4dc79145683ed3453e52a", kill_on_drop: false }`
[INFO] [stdout] f7c3b828aa5c9bc28fdc01d6d0a3b86160965c0601e4dc79145683ed3453e52a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2930872f642669c8c632de234f383ed32a7d3ed99abded78ae50d46f7b7f3729
[INFO] running `Command { std: "docker" "start" "-a" "2930872f642669c8c632de234f383ed32a7d3ed99abded78ae50d46f7b7f3729", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]    Compiling cfg_aliases v0.2.1
[INFO] [stderr]    Compiling rustix v0.37.27
[INFO] [stderr]    Compiling memchr v2.6.2
[INFO] [stderr]    Compiling linux-raw-sys v0.3.8
[INFO] [stderr]    Compiling thiserror v2.0.3
[INFO] [stderr]    Compiling regex-syntax v0.7.5
[INFO] [stderr]    Compiling fastrand v1.9.0
[INFO] [stderr]    Compiling comma v1.0.0
[INFO] [stderr]    Compiling tempfile v3.6.0
[INFO] [stderr]    Compiling nix v0.30.0
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling syn v2.0.90
[INFO] [stderr]    Compiling regex-automata v0.3.9
[INFO] [stderr]    Compiling thiserror-impl v2.0.3
[INFO] [stderr]    Compiling regex v1.9.6
[INFO] [stderr]    Compiling rexpect v0.6.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `exec` that must be used
[INFO] [stdout]    --> src/process.rs:129:17
[INFO] [stdout]     |
[INFO] [stdout] 129 |                 command.exec();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^
[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] 129 |                 let _ = command.exec();
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.21s
[INFO] running `Command { std: "docker" "inspect" "2930872f642669c8c632de234f383ed32a7d3ed99abded78ae50d46f7b7f3729", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2930872f642669c8c632de234f383ed32a7d3ed99abded78ae50d46f7b7f3729", kill_on_drop: false }`
[INFO] [stdout] 2930872f642669c8c632de234f383ed32a7d3ed99abded78ae50d46f7b7f3729
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4191f097750a09769cda8a3bfa142b5e34b7b50c1fd4b17a8d7547d5f38a4eac
[INFO] running `Command { std: "docker" "start" "-a" "4191f097750a09769cda8a3bfa142b5e34b7b50c1fd4b17a8d7547d5f38a4eac", kill_on_drop: false }`
[INFO] [stdout] warning: unused return value of `exec` that must be used
[INFO] [stdout]    --> src/process.rs:129:17
[INFO] [stdout]     |
[INFO] [stdout] 129 |                 command.exec();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^
[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] 129 |                 let _ = command.exec();
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rexpect v0.6.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `exec` that must be used
[INFO] [stdout]    --> src/process.rs:129:17
[INFO] [stdout]     |
[INFO] [stdout] 129 |                 command.exec();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^
[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] 129 |                 let _ = command.exec();
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.69s
[INFO] running `Command { std: "docker" "inspect" "4191f097750a09769cda8a3bfa142b5e34b7b50c1fd4b17a8d7547d5f38a4eac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4191f097750a09769cda8a3bfa142b5e34b7b50c1fd4b17a8d7547d5f38a4eac", kill_on_drop: false }`
[INFO] [stdout] 4191f097750a09769cda8a3bfa142b5e34b7b50c1fd4b17a8d7547d5f38a4eac