[INFO] fetching crate argser 0.2.3...
[INFO] checking argser-0.2.3 against try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056
[INFO] extracting crate argser 0.2.3 into /workspace/builds/worker-48/source
[INFO] validating manifest of crates.io crate argser 0.2.3 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 argser 0.2.3
[INFO] finished tweaking crates.io crate argser 0.2.3
[INFO] tweaked toml for crates.io crate argser 0.2.3 written to /workspace/builds/worker-48/source/Cargo.toml
[INFO] crate crates.io crate argser 0.2.3 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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] 386f3e65260c4bf6d792265b12efacc0f20fb87a94fbc67e3bc190f25ddac526
[INFO] running `Command { std: "docker" "start" "-a" "386f3e65260c4bf6d792265b12efacc0f20fb87a94fbc67e3bc190f25ddac526", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "386f3e65260c4bf6d792265b12efacc0f20fb87a94fbc67e3bc190f25ddac526", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "386f3e65260c4bf6d792265b12efacc0f20fb87a94fbc67e3bc190f25ddac526", kill_on_drop: false }`
[INFO] [stdout] 386f3e65260c4bf6d792265b12efacc0f20fb87a94fbc67e3bc190f25ddac526
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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] fa1902e52afadeed38968d2c80738ff28d83309faa73fa0371e7101ebb6f8d9f
[INFO] running `Command { std: "docker" "start" "-a" "fa1902e52afadeed38968d2c80738ff28d83309faa73fa0371e7101ebb6f8d9f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling argser-macros v0.2.2
[INFO] [stderr]     Checking argser v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `name`
[INFO] [stdout]  --> examples/simple_ci.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     name: 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: `sub`
[INFO] [stdout]  --> examples/simple_ci.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     sub: SubCategory,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `optional`
[INFO] [stdout]   --> examples/simple_ci.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     optional: Option<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `names`
[INFO] [stdout]   --> examples/simple_ci.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     names: Vec<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `other`
[INFO] [stdout]   --> examples/simple_ci.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     other: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.55s
[INFO] running `Command { std: "docker" "inspect" "fa1902e52afadeed38968d2c80738ff28d83309faa73fa0371e7101ebb6f8d9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa1902e52afadeed38968d2c80738ff28d83309faa73fa0371e7101ebb6f8d9f", kill_on_drop: false }`
[INFO] [stdout] fa1902e52afadeed38968d2c80738ff28d83309faa73fa0371e7101ebb6f8d9f