[INFO] cloning repository https://github.com/sanj0/chessica
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sanj0/chessica" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsanj0%2Fchessica", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsanj0%2Fchessica'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8ea2b4edd4f033c37c4130dc787d6ebbf4d6aad6
[INFO] building sanj0/chessica against try#8b8eff55bd72abbb57167bc42222a7f91d41cb0d for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsanj0%2Fchessica" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sanj0/chessica 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/sanj0/chessica
[INFO] finished tweaking git repo https://github.com/sanj0/chessica
[INFO] tweaked toml for git repo https://github.com/sanj0/chessica written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/sanj0/chessica 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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 1bcd051a582db74af634036477a57106c2f10ae0243e14a877347f17e3595e11
[INFO] running `Command { std: "docker" "start" "-a" "1bcd051a582db74af634036477a57106c2f10ae0243e14a877347f17e3595e11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1bcd051a582db74af634036477a57106c2f10ae0243e14a877347f17e3595e11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bcd051a582db74af634036477a57106c2f10ae0243e14a877347f17e3595e11", kill_on_drop: false }`
[INFO] [stdout] 1bcd051a582db74af634036477a57106c2f10ae0243e14a877347f17e3595e11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] c47068178de257d54611b19506522fd9b18161c59556df34a0142fe02b88f991
[INFO] running `Command { std: "docker" "start" "-a" "c47068178de257d54611b19506522fd9b18161c59556df34a0142fe02b88f991", kill_on_drop: false }`
[INFO] [stderr]    Compiling chessica v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `turn` and `castle_rights` are never read
[INFO] [stdout]   --> src/chess.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | pub struct Board {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 10 |     turn: u16,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 11 |     castle_rights: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Board` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "c47068178de257d54611b19506522fd9b18161c59556df34a0142fe02b88f991", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c47068178de257d54611b19506522fd9b18161c59556df34a0142fe02b88f991", kill_on_drop: false }`
[INFO] [stdout] c47068178de257d54611b19506522fd9b18161c59556df34a0142fe02b88f991
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 73f9d31026a05c1c176aded654caa13f291eb24cf91d95f038e597ea3c1e54b8
[INFO] running `Command { std: "docker" "start" "-a" "73f9d31026a05c1c176aded654caa13f291eb24cf91d95f038e597ea3c1e54b8", kill_on_drop: false }`
[INFO] [stderr]    Compiling chessica v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `turn` and `castle_rights` are never read
[INFO] [stdout]   --> src/chess.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | pub struct Board {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 10 |     turn: u16,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 11 |     castle_rights: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Board` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "73f9d31026a05c1c176aded654caa13f291eb24cf91d95f038e597ea3c1e54b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73f9d31026a05c1c176aded654caa13f291eb24cf91d95f038e597ea3c1e54b8", kill_on_drop: false }`
[INFO] [stdout] 73f9d31026a05c1c176aded654caa13f291eb24cf91d95f038e597ea3c1e54b8