[INFO] fetching crate val-test 0.2.3...
[INFO] checking val-test-0.2.3 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate val-test 0.2.3 into /workspace/builds/worker-36/source
[INFO] validating manifest of crates.io crate val-test 0.2.3 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate val-test 0.2.3
[INFO] finished tweaking crates.io crate val-test 0.2.3
[INFO] tweaked toml for crates.io crate val-test 0.2.3 written to /workspace/builds/worker-36/source/Cargo.toml
[INFO] crate crates.io crate val-test 0.2.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "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-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cb956b76627a52d8750b01c7719a2d87008ed5bca9705dca0e3ab4b02a2c2b5f
[INFO] running `Command { std: "docker" "start" "-a" "cb956b76627a52d8750b01c7719a2d87008ed5bca9705dca0e3ab4b02a2c2b5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb956b76627a52d8750b01c7719a2d87008ed5bca9705dca0e3ab4b02a2c2b5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb956b76627a52d8750b01c7719a2d87008ed5bca9705dca0e3ab4b02a2c2b5f", kill_on_drop: false }`
[INFO] [stdout] cb956b76627a52d8750b01c7719a2d87008ed5bca9705dca0e3ab4b02a2c2b5f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 419f7f8a25561270bb7b8b36f81831561c0cd9f26c3fa44921a441a1f0febdf0
[INFO] running `Command { std: "docker" "start" "-a" "419f7f8a25561270bb7b8b36f81831561c0cd9f26c3fa44921a441a1f0febdf0", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling serde_json v1.0.68
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking val-test v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `message`
[INFO] [stdout]   --> src/lib.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |         pub(crate) message: Option<String>,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `field`
[INFO] [stdout]   --> src/lib.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 |         pub(crate) field: Option<String>,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `valid`
[INFO] [stdout]   --> src/lib.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |         pub(crate) valid: bool,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `message`
[INFO] [stdout]   --> src/lib.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |         pub(crate) message: Option<String>,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `field`
[INFO] [stdout]   --> src/lib.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 |         pub(crate) field: Option<String>,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `valid`
[INFO] [stdout]   --> src/lib.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |         pub(crate) valid: bool,
[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 16.43s
[INFO] running `Command { std: "docker" "inspect" "419f7f8a25561270bb7b8b36f81831561c0cd9f26c3fa44921a441a1f0febdf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "419f7f8a25561270bb7b8b36f81831561c0cd9f26c3fa44921a441a1f0febdf0", kill_on_drop: false }`
[INFO] [stdout] 419f7f8a25561270bb7b8b36f81831561c0cd9f26c3fa44921a441a1f0febdf0