[INFO] fetching crate derive_builder_core 0.12.0...
[INFO] checking derive_builder_core-0.12.0 against master#80399064afa4a2cd153f30d02c25f7ea0383ed65 for opaque-soundness-fix
[INFO] extracting crate derive_builder_core 0.12.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate derive_builder_core 0.12.0 on toolchain 80399064afa4a2cd153f30d02c25f7ea0383ed65
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate derive_builder_core 0.12.0
[INFO] finished tweaking crates.io crate derive_builder_core 0.12.0
[INFO] tweaked toml for crates.io crate derive_builder_core 0.12.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded output_vt100 v0.1.3
[INFO] [stderr]   Downloaded pretty_assertions v0.6.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a125ba6ff63385676ae4b8c7626d99faa64ce3825688e0f61038635f5733e5dc
[INFO] running `Command { std: "docker" "start" "-a" "a125ba6ff63385676ae4b8c7626d99faa64ce3825688e0f61038635f5733e5dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a125ba6ff63385676ae4b8c7626d99faa64ce3825688e0f61038635f5733e5dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a125ba6ff63385676ae4b8c7626d99faa64ce3825688e0f61038635f5733e5dc", kill_on_drop: false }`
[INFO] [stdout] a125ba6ff63385676ae4b8c7626d99faa64ce3825688e0f61038635f5733e5dc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 739c3a4b8d3d51bdd1b9fc87b8ba67b07cd1f93df0a5eb84db1cc1c932b79a58
[INFO] running `Command { std: "docker" "start" "-a" "739c3a4b8d3d51bdd1b9fc87b8ba67b07cd1f93df0a5eb84db1cc1c932b79a58", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking pretty_assertions v0.6.1
[INFO] [stderr]     Checking darling_core v0.14.4
[INFO] [stderr]    Compiling darling_macro v0.14.4
[INFO] [stderr]     Checking darling v0.14.4
[INFO] [stderr]     Checking derive_builder_core v0.12.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/block.rs:5:11
[INFO] [stdout]    |
[INFO] [stdout] 5  | use syn::{self, spanned::Spanned, Block, LitStr};
[INFO] [stdout]    |           ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 | #![deny(warnings, missing_docs)]
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(unused_imports)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/build_method.rs:6:5
[INFO] [stdout]    |
[INFO] [stdout] 6  | use syn;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/builder.rs:6:11
[INFO] [stdout]    |
[INFO] [stdout] 6  | use syn::{self, Path, TraitBound, TraitBoundModifier, TypeParamBound};
[INFO] [stdout]    |           ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/builder_field.rs:5:5
[INFO] [stdout]    |
[INFO] [stdout] 5  | use syn;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/deprecation_notes.rs:3:5
[INFO] [stdout]    |
[INFO] [stdout] 3  | use syn;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/initializer.rs:3:5
[INFO] [stdout]    |
[INFO] [stdout] 3  | use syn;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `darling` is imported redundantly
[INFO] [stdout]   --> src/macro_options/darling_opts.rs:6:15
[INFO] [stdout]    |
[INFO] [stdout] 6  | use darling::{self, Error, FromMeta};
[INFO] [stdout]    |               ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | extern crate darling;
[INFO] [stdout]    | --------------------- the item `darling` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/macro_options/darling_opts.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 | use syn::{self, spanned::Spanned, Attribute, Generics, Ident, Path};
[INFO] [stdout]    |           ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/setter.rs:6:5
[INFO] [stdout]    |
[INFO] [stdout] 6  | use syn;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `TokenStream` is imported redundantly
[INFO] [stdout]    --> src/builder.rs:371:9
[INFO] [stdout]     |
[INFO] [stdout] 370 |     use super::*;
[INFO] [stdout]     |         -------- the item `TokenStream` is already imported here
[INFO] [stdout] 371 |     use proc_macro2::TokenStream;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:18:9
[INFO] [stdout]     |
[INFO] [stdout] 18  | #![deny(warnings, missing_docs)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[deny(unused_imports)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/deprecation_notes.rs:3:5
[INFO] [stdout]    |
[INFO] [stdout] 3  | use syn;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `darling` is imported redundantly
[INFO] [stdout]   --> src/macro_options/darling_opts.rs:6:15
[INFO] [stdout]    |
[INFO] [stdout] 6  | use darling::{self, Error, FromMeta};
[INFO] [stdout]    |               ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | extern crate darling;
[INFO] [stdout]    | --------------------- the item `darling` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/macro_options/darling_opts.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 | use syn::{self, spanned::Spanned, Attribute, Generics, Ident, Path};
[INFO] [stdout]    |           ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 9 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `derive_builder_core` (lib) due to 10 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `derive_builder_core` (lib test) due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "739c3a4b8d3d51bdd1b9fc87b8ba67b07cd1f93df0a5eb84db1cc1c932b79a58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "739c3a4b8d3d51bdd1b9fc87b8ba67b07cd1f93df0a5eb84db1cc1c932b79a58", kill_on_drop: false }`
[INFO] [stdout] 739c3a4b8d3d51bdd1b9fc87b8ba67b07cd1f93df0a5eb84db1cc1c932b79a58
