[INFO] fetching crate array-util 1.0.2...
[INFO] checking array-util-1.0.2 against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1
[INFO] extracting crate array-util 1.0.2 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate array-util 1.0.2
[INFO] finished tweaking crates.io crate array-util 1.0.2
[INFO] tweaked toml for crates.io crate array-util 1.0.2 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate array-util 1.0.2 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 1 package to latest compatible version
[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] 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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a80bd67cd53f2b19c852d1985b96b186420868e2b8a68fd4fd67512bb0d94c48
[INFO] running `Command { std: "docker" "start" "-a" "a80bd67cd53f2b19c852d1985b96b186420868e2b8a68fd4fd67512bb0d94c48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a80bd67cd53f2b19c852d1985b96b186420868e2b8a68fd4fd67512bb0d94c48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a80bd67cd53f2b19c852d1985b96b186420868e2b8a68fd4fd67512bb0d94c48", kill_on_drop: false }`
[INFO] [stdout] a80bd67cd53f2b19c852d1985b96b186420868e2b8a68fd4fd67512bb0d94c48
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6eef464c1e0f75026ea6cf7b31ea0a5cfed3b71976adca21872499d2f90b909c
[INFO] running `Command { std: "docker" "start" "-a" "6eef464c1e0f75026ea6cf7b31ea0a5cfed3b71976adca21872499d2f90b909c", kill_on_drop: false }`
[INFO] [stderr]     Checking arrayvec v0.7.6
[INFO] [stderr]     Checking array-util v1.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to provided trait methods
[INFO] [stdout]     --> src/lib.rs:1144:5
[INFO] [stdout]      |
[INFO] [stdout] 1144 |     #[must_use]
[INFO] [stdout]      |     ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to provided trait methods
[INFO] [stdout]     --> src/lib.rs:1178:5
[INFO] [stdout]      |
[INFO] [stdout] 1178 |     #[must_use]
[INFO] [stdout]      |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to provided trait methods
[INFO] [stdout]     --> src/lib.rs:1209:5
[INFO] [stdout]      |
[INFO] [stdout] 1209 |     #[must_use]
[INFO] [stdout]      |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to provided trait methods
[INFO] [stdout]     --> src/lib.rs:1245:5
[INFO] [stdout]      |
[INFO] [stdout] 1245 |     #[must_use]
[INFO] [stdout]      |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to provided trait methods
[INFO] [stdout]     --> src/lib.rs:1270:5
[INFO] [stdout]      |
[INFO] [stdout] 1270 |     #[must_use]
[INFO] [stdout]      |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to provided trait methods
[INFO] [stdout]     --> src/lib.rs:1301:5
[INFO] [stdout]      |
[INFO] [stdout] 1301 |     #[must_use]
[INFO] [stdout]      |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to provided trait methods
[INFO] [stdout]     --> src/lib.rs:1144:5
[INFO] [stdout]      |
[INFO] [stdout] 1144 |     #[must_use]
[INFO] [stdout]      |     ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to provided trait methods
[INFO] [stdout]     --> src/lib.rs:1178:5
[INFO] [stdout]      |
[INFO] [stdout] 1178 |     #[must_use]
[INFO] [stdout]      |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to provided trait methods
[INFO] [stdout]     --> src/lib.rs:1209:5
[INFO] [stdout]      |
[INFO] [stdout] 1209 |     #[must_use]
[INFO] [stdout]      |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to provided trait methods
[INFO] [stdout]     --> src/lib.rs:1245:5
[INFO] [stdout]      |
[INFO] [stdout] 1245 |     #[must_use]
[INFO] [stdout]      |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to provided trait methods
[INFO] [stdout]     --> src/lib.rs:1270:5
[INFO] [stdout]      |
[INFO] [stdout] 1270 |     #[must_use]
[INFO] [stdout]      |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to provided trait methods
[INFO] [stdout]     --> src/lib.rs:1301:5
[INFO] [stdout]      |
[INFO] [stdout] 1301 |     #[must_use]
[INFO] [stdout]      |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "6eef464c1e0f75026ea6cf7b31ea0a5cfed3b71976adca21872499d2f90b909c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6eef464c1e0f75026ea6cf7b31ea0a5cfed3b71976adca21872499d2f90b909c", kill_on_drop: false }`
[INFO] [stdout] 6eef464c1e0f75026ea6cf7b31ea0a5cfed3b71976adca21872499d2f90b909c