[INFO] cloning repository https://github.com/paul-schaaf/legal_chess
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/paul-schaaf/legal_chess" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaul-schaaf%2Flegal_chess", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaul-schaaf%2Flegal_chess'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 31d4ecd85522cfec2a89a3bb3837ba22506ff0cc
[INFO] building paul-schaaf/legal_chess against master#44f415c1d617ebc7b931a243b7b321ef8a6ca47c for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaul-schaaf%2Flegal_chess" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/paul-schaaf/legal_chess on toolchain 44f415c1d617ebc7b931a243b7b321ef8a6ca47c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/paul-schaaf/legal_chess
[INFO] finished tweaking git repo https://github.com/paul-schaaf/legal_chess
[INFO] tweaked toml for git repo https://github.com/paul-schaaf/legal_chess written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/paul-schaaf/legal_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" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 926184b4ac6cd6326fbb3799bbefd05a4d214edecbd3478d930d80fbe4d521a1
[INFO] running `Command { std: "docker" "start" "-a" "926184b4ac6cd6326fbb3799bbefd05a4d214edecbd3478d930d80fbe4d521a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "926184b4ac6cd6326fbb3799bbefd05a4d214edecbd3478d930d80fbe4d521a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "926184b4ac6cd6326fbb3799bbefd05a4d214edecbd3478d930d80fbe4d521a1", kill_on_drop: false }`
[INFO] [stdout] 926184b4ac6cd6326fbb3799bbefd05a4d214edecbd3478d930d80fbe4d521a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0c8cbfb9c234bae90aa60a86dbcbb9d9ffe51a4a423ee1955ede4fa1b75bc00a
[INFO] running `Command { std: "docker" "start" "-a" "0c8cbfb9c234bae90aa60a86dbcbb9d9ffe51a4a423ee1955ede4fa1b75bc00a", kill_on_drop: false }`
[INFO] [stderr]    Compiling legal_chess v0.4.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/attack.rs:8:12
[INFO] [stdout]    |
[INFO] [stdout] 8  |     board: &board::Board,
[INFO] [stdout]    |            ^^^^^^^^^^^^^ this lifetime flows to the output
[INFO] [stdout] ...
[INFO] [stdout] 11 | ) -> AttackedBoard {
[INFO] [stdout]    |      ------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 11 | ) -> AttackedBoard<'_> {
[INFO] [stdout]    |                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/board.rs:97:17
[INFO] [stdout]    |
[INFO] [stdout] 97 |     pub fn iter(&self) -> slice::Iter<Vec<Option<Box<dyn piece::Piece>>>> {
[INFO] [stdout]    |                 ^^^^^     ----------------------------------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 97 |     pub fn iter(&self) -> slice::Iter<'_, Vec<Option<Box<dyn piece::Piece>>>> {
[INFO] [stdout]    |                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `Command { std: "docker" "inspect" "0c8cbfb9c234bae90aa60a86dbcbb9d9ffe51a4a423ee1955ede4fa1b75bc00a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c8cbfb9c234bae90aa60a86dbcbb9d9ffe51a4a423ee1955ede4fa1b75bc00a", kill_on_drop: false }`
[INFO] [stdout] 0c8cbfb9c234bae90aa60a86dbcbb9d9ffe51a4a423ee1955ede4fa1b75bc00a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0752a10bcd85d6de8e497f980ddcf1463c553c9652f29adea287be279885b3c8
[INFO] running `Command { std: "docker" "start" "-a" "0752a10bcd85d6de8e497f980ddcf1463c553c9652f29adea287be279885b3c8", kill_on_drop: false }`
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/attack.rs:8:12
[INFO] [stdout]    |
[INFO] [stdout] 8  |     board: &board::Board,
[INFO] [stdout]    |            ^^^^^^^^^^^^^ this lifetime flows to the output
[INFO] [stdout] ...
[INFO] [stdout] 11 | ) -> AttackedBoard {
[INFO] [stdout]    |      ------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 11 | ) -> AttackedBoard<'_> {
[INFO] [stdout]    |                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling legal_chess v0.4.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/board.rs:97:17
[INFO] [stdout]    |
[INFO] [stdout] 97 |     pub fn iter(&self) -> slice::Iter<Vec<Option<Box<dyn piece::Piece>>>> {
[INFO] [stdout]    |                 ^^^^^     ----------------------------------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 97 |     pub fn iter(&self) -> slice::Iter<'_, Vec<Option<Box<dyn piece::Piece>>>> {
[INFO] [stdout]    |                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/attack.rs:8:12
[INFO] [stdout]    |
[INFO] [stdout] 8  |     board: &board::Board,
[INFO] [stdout]    |            ^^^^^^^^^^^^^ this lifetime flows to the output
[INFO] [stdout] ...
[INFO] [stdout] 11 | ) -> AttackedBoard {
[INFO] [stdout]    |      ------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 11 | ) -> AttackedBoard<'_> {
[INFO] [stdout]    |                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/board.rs:97:17
[INFO] [stdout]    |
[INFO] [stdout] 97 |     pub fn iter(&self) -> slice::Iter<Vec<Option<Box<dyn piece::Piece>>>> {
[INFO] [stdout]    |                 ^^^^^     ----------------------------------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 97 |     pub fn iter(&self) -> slice::Iter<'_, Vec<Option<Box<dyn piece::Piece>>>> {
[INFO] [stdout]    |                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 3.57s
[INFO] running `Command { std: "docker" "inspect" "0752a10bcd85d6de8e497f980ddcf1463c553c9652f29adea287be279885b3c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0752a10bcd85d6de8e497f980ddcf1463c553c9652f29adea287be279885b3c8", kill_on_drop: false }`
[INFO] [stdout] 0752a10bcd85d6de8e497f980ddcf1463c553c9652f29adea287be279885b3c8