[INFO] fetching crate darling 0.13.0-beta...
[INFO] checking darling-0.13.0-beta against master#50e1dc1536264ab71c0850f346b12309477f29f7 for pr-85073
[INFO] extracting crate darling 0.13.0-beta into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate darling 0.13.0-beta on toolchain 50e1dc1536264ab71c0850f346b12309477f29f7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate darling 0.13.0-beta
[INFO] finished tweaking crates.io crate darling 0.13.0-beta
[INFO] tweaked toml for crates.io crate darling 0.13.0-beta written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate darling 0.13.0-beta already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+50e1dc1536264ab71c0850f346b12309477f29f7" "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] 89fc7314562c17fb4830b2ed3e0d0d8650b635666a90fd685d0aad03bc954080
[INFO] running `Command { std: "docker" "start" "-a" "89fc7314562c17fb4830b2ed3e0d0d8650b635666a90fd685d0aad03bc954080", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89fc7314562c17fb4830b2ed3e0d0d8650b635666a90fd685d0aad03bc954080", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89fc7314562c17fb4830b2ed3e0d0d8650b635666a90fd685d0aad03bc954080", kill_on_drop: false }`
[INFO] [stdout] 89fc7314562c17fb4830b2ed3e0d0d8650b635666a90fd685d0aad03bc954080
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+50e1dc1536264ab71c0850f346b12309477f29f7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e114e08119a19075a754696d48da0251e61916d1fb1994d46d52e7afbde34f7
[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" "6e114e08119a19075a754696d48da0251e61916d1fb1994d46d52e7afbde34f7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]     Checking unicode-xid v0.2.0
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]     Checking darling_core v0.13.0-beta
[INFO] [stderr]    Compiling darling_macro v0.13.0-beta
[INFO] [stderr]     Checking darling v0.13.0-beta (/opt/rustwide/workdir)
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]  --> tests/from_type_param_default.rs:4:3
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[darling(attributes(lorem), default)]
[INFO] [stdout]   |   ^^^^^^^
[INFO] [stdout] 5 | #[derive(Default, FromTypeParam)]
[INFO] [stdout]   |                   ------------- the attribute is introduced here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(legacy_derive_helpers)]` on by default
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]   = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]  --> tests/from_type_param.rs:4:3
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[darling(attributes(lorem), from_ident)]
[INFO] [stdout]   |   ^^^^^^^
[INFO] [stdout] 5 | #[derive(FromTypeParam)]
[INFO] [stdout]   |          ------------- the attribute is introduced here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(legacy_derive_helpers)]` on by default
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]   = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.14s
[INFO] running `Command { std: "docker" "inspect" "6e114e08119a19075a754696d48da0251e61916d1fb1994d46d52e7afbde34f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e114e08119a19075a754696d48da0251e61916d1fb1994d46d52e7afbde34f7", kill_on_drop: false }`
[INFO] [stdout] 6e114e08119a19075a754696d48da0251e61916d1fb1994d46d52e7afbde34f7