[INFO] cloning repository https://github.com/AchroDev/rust_handling_errors_with_files
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AchroDev/rust_handling_errors_with_files" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAchroDev%2Frust_handling_errors_with_files", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAchroDev%2Frust_handling_errors_with_files'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9b19f148635f0642d03f6dd95fde882d0fe2cf6c
[INFO] checking AchroDev/rust_handling_errors_with_files against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAchroDev%2Frust_handling_errors_with_files" "/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/AchroDev/rust_handling_errors_with_files
[INFO] finished tweaking git repo https://github.com/AchroDev/rust_handling_errors_with_files
[INFO] tweaked toml for git repo https://github.com/AchroDev/rust_handling_errors_with_files written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/AchroDev/rust_handling_errors_with_files on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/AchroDev/rust_handling_errors_with_files 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fd38d1fe608f50d61a1273f93d82d337303f6973f161b3288c104205df28c81a
[INFO] running `Command { std: "docker" "start" "-a" "fd38d1fe608f50d61a1273f93d82d337303f6973f161b3288c104205df28c81a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd38d1fe608f50d61a1273f93d82d337303f6973f161b3288c104205df28c81a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd38d1fe608f50d61a1273f93d82d337303f6973f161b3288c104205df28c81a", kill_on_drop: false }`
[INFO] [stdout] fd38d1fe608f50d61a1273f93d82d337303f6973f161b3288c104205df28c81a
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 86c95b428acd950edbd525b77de59404a889bda8497a9bc8cfd325afcd6f690c
[INFO] running `Command { std: "docker" "start" "-a" "86c95b428acd950edbd525b77de59404a889bda8497a9bc8cfd325afcd6f690c", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_handling_errors_with_files v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `output2`
[INFO] [stdout]   --> src/main.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let output2 = match output2 {
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_output2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output2`
[INFO] [stdout]   --> src/main.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let output2 = match output2 {
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_output2`
[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 0.11s
[INFO] running `Command { std: "docker" "inspect" "86c95b428acd950edbd525b77de59404a889bda8497a9bc8cfd325afcd6f690c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86c95b428acd950edbd525b77de59404a889bda8497a9bc8cfd325afcd6f690c", kill_on_drop: false }`
[INFO] [stdout] 86c95b428acd950edbd525b77de59404a889bda8497a9bc8cfd325afcd6f690c
