[INFO] cloning repository https://github.com/matiasop/chess
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/matiasop/chess" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatiasop%2Fchess", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatiasop%2Fchess'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 41b6b9b1f17115a6211abbca65c53c0f4616b57b
[INFO] checking matiasop/chess against try#a75eafceea413a1b40c0e0769db85e08ec17160b for pr-133925
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatiasop%2Fchess" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/matiasop/chess on toolchain a75eafceea413a1b40c0e0769db85e08ec17160b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a75eafceea413a1b40c0e0769db85e08ec17160b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/matiasop/chess
[INFO] finished tweaking git repo https://github.com/matiasop/chess
[INFO] tweaked toml for git repo https://github.com/matiasop/chess written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/matiasop/chess 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" "+a75eafceea413a1b40c0e0769db85e08ec17160b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+a75eafceea413a1b40c0e0769db85e08ec17160b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bf60a5a82d2deacf488433a7f65db1fdd7b84bb4108995d523f48d8ea5b2a1d2
[INFO] running `Command { std: "docker" "start" "-a" "bf60a5a82d2deacf488433a7f65db1fdd7b84bb4108995d523f48d8ea5b2a1d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bf60a5a82d2deacf488433a7f65db1fdd7b84bb4108995d523f48d8ea5b2a1d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf60a5a82d2deacf488433a7f65db1fdd7b84bb4108995d523f48d8ea5b2a1d2", kill_on_drop: false }`
[INFO] [stdout] bf60a5a82d2deacf488433a7f65db1fdd7b84bb4108995d523f48d8ea5b2a1d2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+a75eafceea413a1b40c0e0769db85e08ec17160b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b498ef83e0f2befbf93a7e86f56d3b7013384d2e814badf624eec72e7d8e09ff
[INFO] running `Command { std: "docker" "start" "-a" "b498ef83e0f2befbf93a7e86f56d3b7013384d2e814badf624eec72e7d8e09ff", kill_on_drop: false }`
[INFO] [stderr]     Checking chess v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `start_tile` and `target_tile` are never read
[INFO] [stdout]   --> src/structs.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub struct Move {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] 37 |     pub start_tile: isize,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 38 |     pub target_tile: isize,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Move` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `start_tile` and `target_tile` are never read
[INFO] [stdout]   --> src/structs.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub struct Move {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] 37 |     pub start_tile: isize,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 38 |     pub target_tile: isize,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Move` has a derived impl for the trait `Debug`, but this is 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 0.07s
[INFO] running `Command { std: "docker" "inspect" "b498ef83e0f2befbf93a7e86f56d3b7013384d2e814badf624eec72e7d8e09ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b498ef83e0f2befbf93a7e86f56d3b7013384d2e814badf624eec72e7d8e09ff", kill_on_drop: false }`
[INFO] [stdout] b498ef83e0f2befbf93a7e86f56d3b7013384d2e814badf624eec72e7d8e09ff