[INFO] fetching crate linked-tail-list 0.0.1...
[INFO] checking linked-tail-list-0.0.1 against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] extracting crate linked-tail-list 0.0.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate linked-tail-list 0.0.1 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 linked-tail-list 0.0.1
[INFO] finished tweaking crates.io crate linked-tail-list 0.0.1
[INFO] tweaked toml for crates.io crate linked-tail-list 0.0.1 written to /workspace/builds/worker-8/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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 4781bdd70c33653e32b1e07d5f314ae90befa0d45d1bb4975c6865a12e1a0b8e
[INFO] running `Command { std: "docker" "start" "-a" "4781bdd70c33653e32b1e07d5f314ae90befa0d45d1bb4975c6865a12e1a0b8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4781bdd70c33653e32b1e07d5f314ae90befa0d45d1bb4975c6865a12e1a0b8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4781bdd70c33653e32b1e07d5f314ae90befa0d45d1bb4975c6865a12e1a0b8e", kill_on_drop: false }`
[INFO] [stdout] 4781bdd70c33653e32b1e07d5f314ae90befa0d45d1bb4975c6865a12e1a0b8e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 3b43fbc133b086df53e6ab02bc54b4b93e3b106c3c2d4c1fc16e4e02b0c007b7
[INFO] running `Command { std: "docker" "start" "-a" "3b43fbc133b086df53e6ab02bc54b4b93e3b106c3c2d4c1fc16e4e02b0c007b7", kill_on_drop: false }`
[INFO] [stderr]     Checking linked-tail-list v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:358:5
[INFO] [stdout]     |
[INFO] [stdout] 358 |     unsafe {
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:358:5
[INFO] [stdout]     |
[INFO] [stdout] 358 |     unsafe {
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "3b43fbc133b086df53e6ab02bc54b4b93e3b106c3c2d4c1fc16e4e02b0c007b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b43fbc133b086df53e6ab02bc54b4b93e3b106c3c2d4c1fc16e4e02b0c007b7", kill_on_drop: false }`
[INFO] [stdout] 3b43fbc133b086df53e6ab02bc54b4b93e3b106c3c2d4c1fc16e4e02b0c007b7