[INFO] fetching crate hexe 0.0.5...
[INFO] checking hexe-0.0.5 against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] extracting crate hexe 0.0.5 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate hexe 0.0.5 on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hexe 0.0.5
[INFO] finished tweaking crates.io crate hexe 0.0.5
[INFO] tweaked toml for crates.io crate hexe 0.0.5 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3718e7bd0879b322ab680ee4717bbf112c57a1abddef7025c4498ae7fc628154
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3718e7bd0879b322ab680ee4717bbf112c57a1abddef7025c4498ae7fc628154", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3718e7bd0879b322ab680ee4717bbf112c57a1abddef7025c4498ae7fc628154", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3718e7bd0879b322ab680ee4717bbf112c57a1abddef7025c4498ae7fc628154", kill_on_drop: false }`
[INFO] [stdout] 3718e7bd0879b322ab680ee4717bbf112c57a1abddef7025c4498ae7fc628154
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 83e7bb6367ca14d1b3b3da85339c623311b985ac6a5b316b240a50ed04dd64dc
[INFO] running `Command { std: "docker" "start" "-a" "83e7bb6367ca14d1b3b3da85339c623311b985ac6a5b316b240a50ed04dd64dc", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking uncon v1.1.0
[INFO] [stderr]     Checking static_assertions v0.2.5
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling uncon_derive v1.1.1
[INFO] [stderr]     Checking hexe_core v0.0.5
[INFO] [stderr]     Checking hexe v0.0.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `src`
[INFO] [stdout]   --> src/position/mod.rs:92:13
[INFO] [stdout]    |
[INFO] [stdout] 92 |         let src = mv.src();
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_src`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dst`
[INFO] [stdout]   --> src/position/mod.rs:93:13
[INFO] [stdout]    |
[INFO] [stdout] 93 |         let dst = mv.dst();
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_dst`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `ponder`
[INFO] [stdout]   --> src/engine/uci.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     ponder: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `infinite`
[INFO] [stdout]   --> src/engine/uci.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     infinite: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `moves_to_go`
[INFO] [stdout]   --> src/engine/uci.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     moves_to_go: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `depth`
[INFO] [stdout]   --> src/engine/uci.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     depth: u32,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `nodes`
[INFO] [stdout]   --> src/engine/uci.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     nodes: u32,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `mate`
[INFO] [stdout]   --> src/engine/uci.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     mate: u32,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `move_time`
[INFO] [stdout]   --> src/engine/uci.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     move_time: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `position`
[INFO] [stdout]   --> src/engine/mod.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     position: Position,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `num_threads`
[INFO] [stdout]    --> src/engine/mod.rs:101:5
[INFO] [stdout]     |
[INFO] [stdout] 101 |     num_threads: u32,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src`
[INFO] [stdout]   --> src/position/mod.rs:92:13
[INFO] [stdout]    |
[INFO] [stdout] 92 |         let src = mv.src();
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_src`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dst`
[INFO] [stdout]   --> src/position/mod.rs:93:13
[INFO] [stdout]    |
[INFO] [stdout] 93 |         let dst = mv.dst();
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_dst`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `ponder`
[INFO] [stdout]   --> src/engine/uci.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     ponder: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `infinite`
[INFO] [stdout]   --> src/engine/uci.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     infinite: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `moves_to_go`
[INFO] [stdout]   --> src/engine/uci.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     moves_to_go: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `depth`
[INFO] [stdout]   --> src/engine/uci.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     depth: u32,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `nodes`
[INFO] [stdout]   --> src/engine/uci.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     nodes: u32,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `mate`
[INFO] [stdout]   --> src/engine/uci.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     mate: u32,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `move_time`
[INFO] [stdout]   --> src/engine/uci.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     move_time: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `position`
[INFO] [stdout]   --> src/engine/mod.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     position: Position,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `num_threads`
[INFO] [stdout]    --> src/engine/mod.rs:101:5
[INFO] [stdout]     |
[INFO] [stdout] 101 |     num_threads: u32,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.02s
[INFO] running `Command { std: "docker" "inspect" "83e7bb6367ca14d1b3b3da85339c623311b985ac6a5b316b240a50ed04dd64dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83e7bb6367ca14d1b3b3da85339c623311b985ac6a5b316b240a50ed04dd64dc", kill_on_drop: false }`
[INFO] [stdout] 83e7bb6367ca14d1b3b3da85339c623311b985ac6a5b316b240a50ed04dd64dc