[INFO] fetching crate header-vec 0.1.2...
[INFO] checking header-vec-0.1.2 against try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056
[INFO] extracting crate header-vec 0.1.2 into /workspace/builds/worker-63/source
[INFO] validating manifest of crates.io crate header-vec 0.1.2 on toolchain 8de4b308b608cded0ebccf658a0fc719bce87d4e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate header-vec 0.1.2
[INFO] finished tweaking crates.io crate header-vec 0.1.2
[INFO] tweaked toml for crates.io crate header-vec 0.1.2 written to /workspace/builds/worker-63/source/Cargo.toml
[INFO] crate crates.io crate header-vec 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 54a5b593f47490bf0e2422d73aa7e75a7e546ba35be87d1be061c77ae9538b3b
[INFO] running `Command { std: "docker" "start" "-a" "54a5b593f47490bf0e2422d73aa7e75a7e546ba35be87d1be061c77ae9538b3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "54a5b593f47490bf0e2422d73aa7e75a7e546ba35be87d1be061c77ae9538b3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54a5b593f47490bf0e2422d73aa7e75a7e546ba35be87d1be061c77ae9538b3b", kill_on_drop: false }`
[INFO] [stdout] 54a5b593f47490bf0e2422d73aa7e75a7e546ba35be87d1be061c77ae9538b3b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 433045346c7528239410795e03eb6c092f8e4b8801c4b096bd294bdfa10c5971
[INFO] running `Command { std: "docker" "start" "-a" "433045346c7528239410795e03eb6c092f8e4b8801c4b096bd294bdfa10c5971", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking header-vec v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `a`
[INFO] [stdout]  --> examples/doc_example.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     a: usize,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` 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 0.57s
[INFO] running `Command { std: "docker" "inspect" "433045346c7528239410795e03eb6c092f8e4b8801c4b096bd294bdfa10c5971", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "433045346c7528239410795e03eb6c092f8e4b8801c4b096bd294bdfa10c5971", kill_on_drop: false }`
[INFO] [stdout] 433045346c7528239410795e03eb6c092f8e4b8801c4b096bd294bdfa10c5971