[INFO] fetching crate kserd_derive 0.1.0...
[INFO] checking kserd_derive-0.1.0 against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] extracting crate kserd_derive 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate kserd_derive 0.1.0 on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate kserd_derive 0.1.0
[INFO] finished tweaking crates.io crate kserd_derive 0.1.0
[INFO] tweaked toml for crates.io crate kserd_derive 0.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded kserd v0.1.0
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 55d9c19ba18b8a4f1bb947efc05bc187f9142f18aefe382126eaf0218b35b2ce
[INFO] running `"docker" "start" "-a" "55d9c19ba18b8a4f1bb947efc05bc187f9142f18aefe382126eaf0218b35b2ce"`
[INFO] [stderr]    Compiling proc-macro2 v1.0.5
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]     Checking kserd v0.1.0
[INFO] [stderr]     Checking quote v1.0.2
[INFO] [stderr]     Checking kserd_derive v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `Index`
[INFO] [stderr]   --> src/lib.rs:23:95
[INFO] [stderr]    |
[INFO] [stderr] 23 |     parse_macro_input, parse_quote, Data, DeriveInput, Fields, GenericParam, Generics, Ident, Index,
[INFO] [stderr]    |                                                                                               ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Index`
[INFO] [stderr]   --> src/lib.rs:23:95
[INFO] [stderr]    |
[INFO] [stderr] 23 |     parse_macro_input, parse_quote, Data, DeriveInput, Fields, GenericParam, Generics, Ident, Index,
[INFO] [stderr]    |                                                                                               ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `fields`
[INFO] [stderr]   --> src/lib.rs:90:37
[INFO] [stderr]    |
[INFO] [stderr] 90 |                 Fields::Unnamed(ref fields) => {
[INFO] [stderr]    |                                     ^^^^^^ help: consider prefixing with an underscore: `_fields`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `fields`
[INFO] [stderr]   --> src/lib.rs:90:37
[INFO] [stderr]    |
[INFO] [stderr] 90 |                 Fields::Unnamed(ref fields) => {
[INFO] [stderr]    |                                     ^^^^^^ help: consider prefixing with an underscore: `_fields`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Index`
[INFO] [stderr]   --> src/lib.rs:23:95
[INFO] [stderr]    |
[INFO] [stderr] 23 |     parse_macro_input, parse_quote, Data, DeriveInput, Fields, GenericParam, Generics, Ident, Index,
[INFO] [stderr]    |                                                                                               ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `fields`
[INFO] [stderr]   --> src/lib.rs:90:37
[INFO] [stderr]    |
[INFO] [stderr] 90 |                 Fields::Unnamed(ref fields) => {
[INFO] [stderr]    |                                     ^^^^^^ help: consider prefixing with an underscore: `_fields`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: proc-macro derive panicked
[INFO] [stderr]   --> tests/structs.rs:39:14
[INFO] [stderr]    |
[INFO] [stderr] 39 |     #[derive(AsKserd)]
[INFO] [stderr]    |              ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: message: not yet implemented
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `kserd_derive`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "55d9c19ba18b8a4f1bb947efc05bc187f9142f18aefe382126eaf0218b35b2ce"`
[INFO] running `"docker" "rm" "-f" "55d9c19ba18b8a4f1bb947efc05bc187f9142f18aefe382126eaf0218b35b2ce"`
[INFO] [stdout] 55d9c19ba18b8a4f1bb947efc05bc187f9142f18aefe382126eaf0218b35b2ce