[INFO] cloning repository https://github.com/kelvinkirima014/tropegrep
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kelvinkirima014/tropegrep" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkelvinkirima014%2Ftropegrep", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkelvinkirima014%2Ftropegrep'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2cfbba56791ebf35246a676ebb0e2e616a047885
[INFO] checking kelvinkirima014/tropegrep against try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkelvinkirima014%2Ftropegrep" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kelvinkirima014/tropegrep on toolchain 8de4b308b608cded0ebccf658a0fc719bce87d4e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kelvinkirima014/tropegrep
[INFO] finished tweaking git repo https://github.com/kelvinkirima014/tropegrep
[INFO] tweaked toml for git repo https://github.com/kelvinkirima014/tropegrep written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/kelvinkirima014/tropegrep already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b8e8bca20a19c654c2052c99a0b2287eff443bb2a28c0880b1eb3d3dc4f2f5b1
[INFO] running `Command { std: "docker" "start" "-a" "b8e8bca20a19c654c2052c99a0b2287eff443bb2a28c0880b1eb3d3dc4f2f5b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b8e8bca20a19c654c2052c99a0b2287eff443bb2a28c0880b1eb3d3dc4f2f5b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8e8bca20a19c654c2052c99a0b2287eff443bb2a28c0880b1eb3d3dc4f2f5b1", kill_on_drop: false }`
[INFO] [stdout] b8e8bca20a19c654c2052c99a0b2287eff443bb2a28c0880b1eb3d3dc4f2f5b1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4a42d37612be37dbcfbd34ca8a1b53a25aad693ceb61c6d5eaa65766f3bae536
[INFO] running `Command { std: "docker" "start" "-a" "4a42d37612be37dbcfbd34ca8a1b53a25aad693ceb61c6d5eaa65766f3bae536", kill_on_drop: false }`
[INFO] [stderr]     Checking tropegrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `contents`
[INFO] [stdout]   --> src/lib.rs:23:6
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let contents = fs::read_to_string(config.filename)?;
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_contents`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `contents`
[INFO] [stdout]   --> src/lib.rs:23:6
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let contents = fs::read_to_string(config.filename)?;
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_contents`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/main.rs:10:53
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let config = Config::new(&args).unwrap_or_else(|err| {
[INFO] [stdout]    |                                                     ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/main.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 15 |     if let Err(e) = tropegrep::run (config) {
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/main.rs:10:53
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let config = Config::new(&args).unwrap_or_else(|err| {
[INFO] [stdout]    |                                                     ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/main.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 15 |     if let Err(e) = tropegrep::run (config) {
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "4a42d37612be37dbcfbd34ca8a1b53a25aad693ceb61c6d5eaa65766f3bae536", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a42d37612be37dbcfbd34ca8a1b53a25aad693ceb61c6d5eaa65766f3bae536", kill_on_drop: false }`
[INFO] [stdout] 4a42d37612be37dbcfbd34ca8a1b53a25aad693ceb61c6d5eaa65766f3bae536