[INFO] fetching crate unshield 0.2.0...
[INFO] checking unshield-0.2.0 against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] extracting crate unshield 0.2.0 into /workspace/builds/worker-62/source
[INFO] validating manifest of crates.io crate unshield 0.2.0 on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate unshield 0.2.0
[INFO] finished tweaking crates.io crate unshield 0.2.0
[INFO] tweaked toml for crates.io crate unshield 0.2.0 written to /workspace/builds/worker-62/source/Cargo.toml
[INFO] crate crates.io crate unshield 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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-62/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 66902c30b49b9bd111d48ab379234ffcfc8b3aa8282a6edb4e5e481289e560af
[INFO] running `Command { std: "docker" "start" "-a" "66902c30b49b9bd111d48ab379234ffcfc8b3aa8282a6edb4e5e481289e560af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "66902c30b49b9bd111d48ab379234ffcfc8b3aa8282a6edb4e5e481289e560af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66902c30b49b9bd111d48ab379234ffcfc8b3aa8282a6edb4e5e481289e560af", kill_on_drop: false }`
[INFO] [stdout] 66902c30b49b9bd111d48ab379234ffcfc8b3aa8282a6edb4e5e481289e560af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e933786bd9947123f1161bd3b8adf5a8848318e059678c1caea9845903416bc2
[INFO] running `Command { std: "docker" "start" "-a" "e933786bd9947123f1161bd3b8adf5a8848318e059678c1caea9845903416bc2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling arraydeque v0.4.5
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking fastrand v1.3.4
[INFO] [stderr]     Checking futures-core v0.3.5
[INFO] [stderr]     Checking pin-project-lite v0.1.7
[INFO] [stderr]     Checking parking v1.0.6
[INFO] [stderr]     Checking futures-lite v0.1.11
[INFO] [stderr]     Checking multitask v0.2.0
[INFO] [stderr]     Checking async-executor v0.1.2
[INFO] [stderr]     Checking explode v0.1.2
[INFO] [stderr]     Checking unshield v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `files`
[INFO] [stdout]   --> src/format.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     files: u16,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `size`
[INFO] [stdout]   --> src/format.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     size: u32,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `toc_offset`
[INFO] [stdout]   --> src/format.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     toc_offset: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `files`
[INFO] [stdout]   --> src/format.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     files: u16,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `size`
[INFO] [stdout]   --> src/format.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     size: u32,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `toc_offset`
[INFO] [stdout]   --> src/format.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     toc_offset: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.11s
[INFO] running `Command { std: "docker" "inspect" "e933786bd9947123f1161bd3b8adf5a8848318e059678c1caea9845903416bc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e933786bd9947123f1161bd3b8adf5a8848318e059678c1caea9845903416bc2", kill_on_drop: false }`
[INFO] [stdout] e933786bd9947123f1161bd3b8adf5a8848318e059678c1caea9845903416bc2