[INFO] cloning repository https://github.com/ncolesummers/not-another-grep-lite
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ncolesummers/not-another-grep-lite" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fncolesummers%2Fnot-another-grep-lite", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fncolesummers%2Fnot-another-grep-lite'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6a28bf4896cb2e2d397b3be6f511741b9cb8052f
[INFO] building ncolesummers/not-another-grep-lite against try#8b8eff55bd72abbb57167bc42222a7f91d41cb0d for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fncolesummers%2Fnot-another-grep-lite" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ncolesummers/not-another-grep-lite on toolchain 8b8eff55bd72abbb57167bc42222a7f91d41cb0d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ncolesummers/not-another-grep-lite
[INFO] finished tweaking git repo https://github.com/ncolesummers/not-another-grep-lite
[INFO] tweaked toml for git repo https://github.com/ncolesummers/not-another-grep-lite written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/ncolesummers/not-another-grep-lite 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" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 49e95e42bf10b4871186581f0ac066a88f1b41dbb9cdd9edf3733878b93fab3c
[INFO] running `Command { std: "docker" "start" "-a" "49e95e42bf10b4871186581f0ac066a88f1b41dbb9cdd9edf3733878b93fab3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "49e95e42bf10b4871186581f0ac066a88f1b41dbb9cdd9edf3733878b93fab3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49e95e42bf10b4871186581f0ac066a88f1b41dbb9cdd9edf3733878b93fab3c", kill_on_drop: false }`
[INFO] [stdout] 49e95e42bf10b4871186581f0ac066a88f1b41dbb9cdd9edf3733878b93fab3c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 61a3e7a6fa7b8975346fb2bd360810a1c44e64dc587c093f61f701a6521fa1fc
[INFO] running `Command { std: "docker" "start" "-a" "61a3e7a6fa7b8975346fb2bd360810a1c44e64dc587c093f61f701a6521fa1fc", kill_on_drop: false }`
[INFO] [stderr]    Compiling regex-syntax v0.6.27
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling regex v1.6.0
[INFO] [stderr]    Compiling grep-lite v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `re`
[INFO] [stdout]  --> src/main.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let re = Regex::new("picture").unwrap();
[INFO] [stdout]   |         ^^ help: if this is intentional, prefix it with an underscore: `_re`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.42s
[INFO] running `Command { std: "docker" "inspect" "61a3e7a6fa7b8975346fb2bd360810a1c44e64dc587c093f61f701a6521fa1fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61a3e7a6fa7b8975346fb2bd360810a1c44e64dc587c093f61f701a6521fa1fc", kill_on_drop: false }`
[INFO] [stdout] 61a3e7a6fa7b8975346fb2bd360810a1c44e64dc587c093f61f701a6521fa1fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 956b57b97c1d139dbeb4a3e7fce0472ab45f139a1457cd5ac91badf6b5b39c46
[INFO] running `Command { std: "docker" "start" "-a" "956b57b97c1d139dbeb4a3e7fce0472ab45f139a1457cd5ac91badf6b5b39c46", kill_on_drop: false }`
[INFO] [stderr]    Compiling grep-lite v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `re`
[INFO] [stdout]  --> src/main.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let re = Regex::new("picture").unwrap();
[INFO] [stdout]   |         ^^ help: if this is intentional, prefix it with an underscore: `_re`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "956b57b97c1d139dbeb4a3e7fce0472ab45f139a1457cd5ac91badf6b5b39c46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "956b57b97c1d139dbeb4a3e7fce0472ab45f139a1457cd5ac91badf6b5b39c46", kill_on_drop: false }`
[INFO] [stdout] 956b57b97c1d139dbeb4a3e7fce0472ab45f139a1457cd5ac91badf6b5b39c46