[INFO] fetching crate small_vec2 0.1.1...
[INFO] checking small_vec2-0.1.1 against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] extracting crate small_vec2 0.1.1 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate small_vec2 0.1.1 on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate small_vec2 0.1.1
[INFO] finished tweaking crates.io crate small_vec2 0.1.1
[INFO] tweaked toml for crates.io crate small_vec2 0.1.1 written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 548f53ae5adcc5d4c8ecd3abcea56c6be1e10850f0c1d2ceea14147ffff7f809
[INFO] running `Command { std: "docker" "start" "-a" "548f53ae5adcc5d4c8ecd3abcea56c6be1e10850f0c1d2ceea14147ffff7f809", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "548f53ae5adcc5d4c8ecd3abcea56c6be1e10850f0c1d2ceea14147ffff7f809", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "548f53ae5adcc5d4c8ecd3abcea56c6be1e10850f0c1d2ceea14147ffff7f809", kill_on_drop: false }`
[INFO] [stdout] 548f53ae5adcc5d4c8ecd3abcea56c6be1e10850f0c1d2ceea14147ffff7f809
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b2be38515762094ce825451162ca3d1c619779254ae81507c1262af6e2d24ff8
[INFO] running `Command { std: "docker" "start" "-a" "b2be38515762094ce825451162ca3d1c619779254ae81507c1262af6e2d24ff8", kill_on_drop: false }`
[INFO] [stderr]     Checking small_vec2 v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/tests.rs:921:5
[INFO] [stdout]     |
[INFO] [stdout] 921 |     &x[!0..];
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/tests.rs:928:5
[INFO] [stdout]     |
[INFO] [stdout] 928 |     &x[..6];
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/tests.rs:935:5
[INFO] [stdout]     |
[INFO] [stdout] 935 |     &x[!0..4];
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/tests.rs:942:5
[INFO] [stdout]     |
[INFO] [stdout] 942 |     &x[1..6];
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/tests.rs:949:5
[INFO] [stdout]     |
[INFO] [stdout] 949 |     &x[3..2];
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.69s
[INFO] running `Command { std: "docker" "inspect" "b2be38515762094ce825451162ca3d1c619779254ae81507c1262af6e2d24ff8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2be38515762094ce825451162ca3d1c619779254ae81507c1262af6e2d24ff8", kill_on_drop: false }`
[INFO] [stdout] b2be38515762094ce825451162ca3d1c619779254ae81507c1262af6e2d24ff8