[INFO] fetching crate preftool-clap-derive 0.2.0...
[INFO] checking preftool-clap-derive-0.2.0 against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] extracting crate preftool-clap-derive 0.2.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate preftool-clap-derive 0.2.0 on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate preftool-clap-derive 0.2.0
[INFO] finished tweaking crates.io crate preftool-clap-derive 0.2.0
[INFO] tweaked toml for crates.io crate preftool-clap-derive 0.2.0 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 44abf94c125e2facd081f3693229db59d4837f9792be0be74c6f4ffcaf5512ca
[INFO] running `Command { std: "docker" "start" "-a" "44abf94c125e2facd081f3693229db59d4837f9792be0be74c6f4ffcaf5512ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "44abf94c125e2facd081f3693229db59d4837f9792be0be74c6f4ffcaf5512ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44abf94c125e2facd081f3693229db59d4837f9792be0be74c6f4ffcaf5512ca", kill_on_drop: false }`
[INFO] [stdout] 44abf94c125e2facd081f3693229db59d4837f9792be0be74c6f4ffcaf5512ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2bf454477d5111d5d8d8199364556f4405379006315e9048b16d7daad67c2e1c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2bf454477d5111d5d8d8199364556f4405379006315e9048b16d7daad67c2e1c", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]     Checking memchr v2.4.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking syn v0.15.44
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking preftool-clap v0.2.0
[INFO] [stderr]     Checking preftool-clap-derive v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `host`
[INFO] [stdout]  --> tests/simple.rs:8:3
[INFO] [stdout]   |
[INFO] [stdout] 8 |   host: 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: `binding`
[INFO] [stdout]   --> tests/enum.rs:29:3
[INFO] [stdout]    |
[INFO] [stdout] 29 |   binding: Binding,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `port`
[INFO] [stdout]   --> tests/simple.rs:11:3
[INFO] [stdout]    |
[INFO] [stdout] 11 |   port: usize,
[INFO] [stdout]    |   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `cert`
[INFO] [stdout]   --> tests/simple.rs:14:3
[INFO] [stdout]    |
[INFO] [stdout] 14 |   cert: Option<String>,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `host`
[INFO] [stdout]  --> tests/nested.rs:8:3
[INFO] [stdout]   |
[INFO] [stdout] 8 |   host: 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: `port`
[INFO] [stdout]   --> tests/nested.rs:11:3
[INFO] [stdout]    |
[INFO] [stdout] 11 |   port: usize,
[INFO] [stdout]    |   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `cert`
[INFO] [stdout]   --> tests/nested.rs:14:3
[INFO] [stdout]    |
[INFO] [stdout] 14 |   cert: Option<String>,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `server`
[INFO] [stdout]   --> tests/nested.rs:19:3
[INFO] [stdout]    |
[INFO] [stdout] 19 |   server: Server,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 37.08s
[INFO] running `Command { std: "docker" "inspect" "2bf454477d5111d5d8d8199364556f4405379006315e9048b16d7daad67c2e1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bf454477d5111d5d8d8199364556f4405379006315e9048b16d7daad67c2e1c", kill_on_drop: false }`
[INFO] [stdout] 2bf454477d5111d5d8d8199364556f4405379006315e9048b16d7daad67c2e1c