[INFO] fetching crate tafl 0.0.1-alpha.1...
[INFO] checking tafl-0.0.1-alpha.1 against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1
[INFO] extracting crate tafl 0.0.1-alpha.1 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate tafl 0.0.1-alpha.1
[INFO] finished tweaking crates.io crate tafl 0.0.1-alpha.1
[INFO] tweaked toml for crates.io crate tafl 0.0.1-alpha.1 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tafl 0.0.1-alpha.1 on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate tafl 0.0.1-alpha.1 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" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 555a1b57a45e6a79a84f2f07edac1842b93fcfda1c257313d7f708dad66bc9eb
[INFO] running `Command { std: "docker" "start" "-a" "555a1b57a45e6a79a84f2f07edac1842b93fcfda1c257313d7f708dad66bc9eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "555a1b57a45e6a79a84f2f07edac1842b93fcfda1c257313d7f708dad66bc9eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "555a1b57a45e6a79a84f2f07edac1842b93fcfda1c257313d7f708dad66bc9eb", kill_on_drop: false }`
[INFO] [stdout] 555a1b57a45e6a79a84f2f07edac1842b93fcfda1c257313d7f708dad66bc9eb
[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=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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7386c9723a748448a15add2c764b8251f453db3970530a096a02a2f712922481
[INFO] running `Command { std: "docker" "start" "-a" "7386c9723a748448a15add2c764b8251f453db3970530a096a02a2f712922481", kill_on_drop: false }`
[INFO] [stderr]     Checking tafl v0.0.1-alpha.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Square` is never constructed
[INFO] [stdout]  --> src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 |     struct Square(u8, u8);
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/lib.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 7 |     impl Square {
[INFO] [stdout]   |     ----------- associated function in this implementation
[INFO] [stdout] 8 |         fn new(file: u8, rank: u8) -> Option<Self> {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Position` is never constructed
[INFO] [stdout]   --> src/lib.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     struct Position {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Move` is never constructed
[INFO] [stdout]   --> src/lib.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     struct Move(Square, Square);
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Side` is never used
[INFO] [stdout]   --> src/lib.rs:36:10
[INFO] [stdout]    |
[INFO] [stdout] 36 |     enum Side {
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ErrorCode` is never used
[INFO] [stdout]   --> src/lib.rs:41:10
[INFO] [stdout]    |
[INFO] [stdout] 41 |     enum ErrorCode {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `FinishReason` is never used
[INFO] [stdout]   --> src/lib.rs:48:10
[INFO] [stdout]    |
[INFO] [stdout] 48 |     enum FinishReason {
[INFO] [stdout]    |          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `OpenTaflCommand` is never used
[INFO] [stdout]   --> src/lib.rs:55:10
[INFO] [stdout]    |
[INFO] [stdout] 55 |     enum OpenTaflCommand {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `EngineCommand` is never used
[INFO] [stdout]   --> src/lib.rs:69:10
[INFO] [stdout]    |
[INFO] [stdout] 69 |     enum EngineCommand {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Position` is never constructed
[INFO] [stdout]   --> src/lib.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     struct Position {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Side` is never used
[INFO] [stdout]   --> src/lib.rs:36:10
[INFO] [stdout]    |
[INFO] [stdout] 36 |     enum Side {
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ErrorCode` is never used
[INFO] [stdout]   --> src/lib.rs:41:10
[INFO] [stdout]    |
[INFO] [stdout] 41 |     enum ErrorCode {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `FinishReason` is never used
[INFO] [stdout]   --> src/lib.rs:48:10
[INFO] [stdout]    |
[INFO] [stdout] 48 |     enum FinishReason {
[INFO] [stdout]    |          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `OpenTaflCommand` is never used
[INFO] [stdout]   --> src/lib.rs:55:10
[INFO] [stdout]    |
[INFO] [stdout] 55 |     enum OpenTaflCommand {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> src/lib.rs:76:18
[INFO] [stdout]    |
[INFO] [stdout] 76 |         Analysis(u64, Vec<(Vec<Move>, f64)>),
[INFO] [stdout]    |         -------- ^^^  ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         fields in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 76 -         Analysis(u64, Vec<(Vec<Move>, f64)>),
[INFO] [stdout] 76 +         Analysis((), ()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "7386c9723a748448a15add2c764b8251f453db3970530a096a02a2f712922481", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7386c9723a748448a15add2c764b8251f453db3970530a096a02a2f712922481", kill_on_drop: false }`
[INFO] [stdout] 7386c9723a748448a15add2c764b8251f453db3970530a096a02a2f712922481