[INFO] fetching crate derivative 2.2.0...
[INFO] checking derivative-2.2.0 against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-2
[INFO] extracting crate derivative 2.2.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate derivative 2.2.0 on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate derivative 2.2.0
[INFO] finished tweaking crates.io crate derivative 2.2.0
[INFO] tweaked toml for crates.io crate derivative 2.2.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 20 packages
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.57)
[INFO] [stderr]       Adding toml v0.5.11 (latest: v0.8.12)
[INFO] [stderr]       Adding trybuild v1.0.22 (latest: v1.0.91)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded termcolor v1.4.1
[INFO] [stderr]   Downloaded trybuild v1.0.22
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2c71ceb226f9d0431c6ed96fb58e7ca48ea45062cc60aab74fdc24bb76643775
[INFO] running `Command { std: "docker" "start" "-a" "2c71ceb226f9d0431c6ed96fb58e7ca48ea45062cc60aab74fdc24bb76643775", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c71ceb226f9d0431c6ed96fb58e7ca48ea45062cc60aab74fdc24bb76643775", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c71ceb226f9d0431c6ed96fb58e7ca48ea45062cc60aab74fdc24bb76643775", kill_on_drop: false }`
[INFO] [stdout] 2c71ceb226f9d0431c6ed96fb58e7ca48ea45062cc60aab74fdc24bb76643775
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5d277c816e7e5c8faac06367025313222d07052424bfc0cb5d09c6c7fb066bd7
[INFO] running `Command { std: "docker" "start" "-a" "5d277c816e7e5c8faac06367025313222d07052424bfc0cb5d09c6c7fb066bd7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]     Checking unicode-ident v1.0.12
[INFO] [stderr]     Checking glob v0.3.1
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]     Checking quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.57
[INFO] [stderr]     Checking derivative v2.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `proc_macro2` is imported redundantly
[INFO] [stdout]   --> src/ast.rs:2:5
[INFO] [stdout]    |
[INFO] [stdout] 2  | use proc_macro2;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate proc_macro2;
[INFO] [stdout]    | ------------------------- the item `proc_macro2` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/ast.rs:3:5
[INFO] [stdout]    |
[INFO] [stdout] 3  | use syn;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `proc_macro2` is imported redundantly
[INFO] [stdout]   --> src/attr.rs:1:5
[INFO] [stdout]    |
[INFO] [stdout] 1  | use proc_macro2;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate proc_macro2;
[INFO] [stdout]    | ------------------------- the item `proc_macro2` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/attr.rs:2:5
[INFO] [stdout]    |
[INFO] [stdout] 2  | use syn;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/bound.rs:16:11
[INFO] [stdout]    |
[INFO] [stdout] 16 | use syn::{self, visit, GenericParam};
[INFO] [stdout]    |           ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `proc_macro2` is imported redundantly
[INFO] [stdout]   --> src/clone.rs:1:5
[INFO] [stdout]    |
[INFO] [stdout] 1  | use proc_macro2;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate proc_macro2;
[INFO] [stdout]    | ------------------------- the item `proc_macro2` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/clone.rs:6:5
[INFO] [stdout]    |
[INFO] [stdout] 6  | use syn;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `proc_macro2` is imported redundantly
[INFO] [stdout]   --> src/cmp.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | use proc_macro2;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate proc_macro2;
[INFO] [stdout]    | ------------------------- the item `proc_macro2` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/cmp.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | use syn;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `proc_macro2` is imported redundantly
[INFO] [stdout]   --> src/debug.rs:1:5
[INFO] [stdout]    |
[INFO] [stdout] 1  | use proc_macro2;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate proc_macro2;
[INFO] [stdout]    | ------------------------- the item `proc_macro2` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/debug.rs:6:5
[INFO] [stdout]    |
[INFO] [stdout] 6  | use syn;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `proc_macro2` is imported redundantly
[INFO] [stdout]   --> src/default.rs:1:5
[INFO] [stdout]    |
[INFO] [stdout] 1  | use proc_macro2;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate proc_macro2;
[INFO] [stdout]    | ------------------------- the item `proc_macro2` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/default.rs:5:5
[INFO] [stdout]    |
[INFO] [stdout] 5  | use syn;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `proc_macro2` is imported redundantly
[INFO] [stdout]   --> src/hash.rs:1:5
[INFO] [stdout]    |
[INFO] [stdout] 1  | use proc_macro2;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate proc_macro2;
[INFO] [stdout]    | ------------------------- the item `proc_macro2` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/hash.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | use syn;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `proc_macro2` is imported redundantly
[INFO] [stdout]   --> src/matcher.rs:9:19
[INFO] [stdout]    |
[INFO] [stdout] 9  | use proc_macro2::{self, TokenStream};
[INFO] [stdout]    |                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate proc_macro2;
[INFO] [stdout]    | ------------------------- the item `proc_macro2` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/matcher.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use syn;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `quote` is imported redundantly
[INFO] [stdout]   --> src/matcher.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use quote;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | extern crate quote;
[INFO] [stdout]    | ------------------- the item `quote` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `proc_macro2` is imported redundantly
[INFO] [stdout]   --> src/utils.rs:1:5
[INFO] [stdout]    |
[INFO] [stdout] 1  | use proc_macro2;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate proc_macro2;
[INFO] [stdout]    | ------------------------- the item `proc_macro2` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/utils.rs:6:5
[INFO] [stdout]    |
[INFO] [stdout] 6  | use syn;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stdout] warning: field `span` is never read
[INFO] [stdout]   --> src/ast.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub struct Field<'a> {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 34 |     pub span: proc_macro2::Span,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Field` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `proc_macro2` is imported redundantly
[INFO] [stdout]   --> src/ast.rs:2:5
[INFO] [stdout]    |
[INFO] [stdout] 2  | use proc_macro2;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate proc_macro2;
[INFO] [stdout]    | ------------------------- the item `proc_macro2` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/ast.rs:3:5
[INFO] [stdout]    |
[INFO] [stdout] 3  | use syn;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `proc_macro2` is imported redundantly
[INFO] [stdout]   --> src/attr.rs:1:5
[INFO] [stdout]    |
[INFO] [stdout] 1  | use proc_macro2;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate proc_macro2;
[INFO] [stdout]    | ------------------------- the item `proc_macro2` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/attr.rs:2:5
[INFO] [stdout]    |
[INFO] [stdout] 2  | use syn;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/bound.rs:16:11
[INFO] [stdout]    |
[INFO] [stdout] 16 | use syn::{self, visit, GenericParam};
[INFO] [stdout]    |           ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `proc_macro2` is imported redundantly
[INFO] [stdout]   --> src/clone.rs:1:5
[INFO] [stdout]    |
[INFO] [stdout] 1  | use proc_macro2;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate proc_macro2;
[INFO] [stdout]    | ------------------------- the item `proc_macro2` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/clone.rs:6:5
[INFO] [stdout]    |
[INFO] [stdout] 6  | use syn;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `proc_macro2` is imported redundantly
[INFO] [stdout]   --> src/cmp.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | use proc_macro2;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate proc_macro2;
[INFO] [stdout]    | ------------------------- the item `proc_macro2` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/cmp.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | use syn;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `proc_macro2` is imported redundantly
[INFO] [stdout]   --> src/debug.rs:1:5
[INFO] [stdout]    |
[INFO] [stdout] 1  | use proc_macro2;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate proc_macro2;
[INFO] [stdout]    | ------------------------- the item `proc_macro2` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/debug.rs:6:5
[INFO] [stdout]    |
[INFO] [stdout] 6  | use syn;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `proc_macro2` is imported redundantly
[INFO] [stdout]   --> src/default.rs:1:5
[INFO] [stdout]    |
[INFO] [stdout] 1  | use proc_macro2;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate proc_macro2;
[INFO] [stdout]    | ------------------------- the item `proc_macro2` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/default.rs:5:5
[INFO] [stdout]    |
[INFO] [stdout] 5  | use syn;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `proc_macro2` is imported redundantly
[INFO] [stdout]   --> src/hash.rs:1:5
[INFO] [stdout]    |
[INFO] [stdout] 1  | use proc_macro2;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate proc_macro2;
[INFO] [stdout]    | ------------------------- the item `proc_macro2` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/hash.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | use syn;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `proc_macro2` is imported redundantly
[INFO] [stdout]   --> src/matcher.rs:9:19
[INFO] [stdout]    |
[INFO] [stdout] 9  | use proc_macro2::{self, TokenStream};
[INFO] [stdout]    |                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate proc_macro2;
[INFO] [stdout]    | ------------------------- the item `proc_macro2` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/matcher.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use syn;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `quote` is imported redundantly
[INFO] [stdout]   --> src/matcher.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use quote;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | extern crate quote;
[INFO] [stdout]    | ------------------- the item `quote` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `proc_macro2` is imported redundantly
[INFO] [stdout]   --> src/utils.rs:1:5
[INFO] [stdout]    |
[INFO] [stdout] 1  | use proc_macro2;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate proc_macro2;
[INFO] [stdout]    | ------------------------- the item `proc_macro2` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/utils.rs:6:5
[INFO] [stdout]    |
[INFO] [stdout] 6  | use syn;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `span` is never read
[INFO] [stdout]   --> src/ast.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub struct Field<'a> {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 34 |     pub span: proc_macro2::Span,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Field` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking toml v0.5.11
[INFO] [stderr]     Checking trybuild v1.0.22
[INFO] [stdout] warning: method `dummy` is never used
[INFO] [stdout]   --> tests/rustc-issue-19358.rs:14:18
[INFO] [stdout]    |
[INFO] [stdout] 14 | trait Trait { fn dummy(&self) { } }
[INFO] [stdout]    |       -----      ^^^^^
[INFO] [stdout]    |       |
[INFO] [stdout]    |       method in this trait
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Foo` is never used
[INFO] [stdout]  --> tests/issue-55.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 | trait Foo {}
[INFO] [stdout]   |       ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fmt` is never used
[INFO] [stdout]  --> tests/issue-55.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn fmt<T>(_: &T, _: &mut std::fmt::Formatter) -> std::fmt::Result {
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Qux` is never constructed
[INFO] [stdout]   --> tests/issue-55.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct Qux<'a, T: Foo>(&'a T);
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `S` is never constructed
[INFO] [stdout]   --> tests/rustc-deriving-clone-tuple-struct.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct S((), ());
[INFO] [stdout]    |        ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Test` is never constructed
[INFO] [stdout]   --> tests/issue-82.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Test {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: ambiguous wide pointer comparison, the comparison includes metadata which may not be expected
[INFO] [stdout]   --> tests/derive-eq.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |         self.foo == other.foo
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(ambiguous_wide_pointer_comparisons)]` on by default
[INFO] [stdout] help: use `std::ptr::addr_eq` or untyped pointers to only compare their addresses
[INFO] [stdout]    |
[INFO] [stdout] 24 |         std::ptr::addr_eq(self.foo, other.foo)
[INFO] [stdout]    |         ++++++++++++++++++        ~          +
[INFO] [stdout] help: use explicit `std::ptr::eq` method to compare metadata and addresses
[INFO] [stdout]    |
[INFO] [stdout] 24 |         std::ptr::eq(self.foo, other.foo)
[INFO] [stdout]    |         +++++++++++++        ~          +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Default` is imported redundantly
[INFO] [stdout]   --> tests/rustc-deriving-default-box.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use std::default::Default;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/prelude/mod.rs:124:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Default` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: ambiguous wide pointer comparison, the comparison includes metadata which may not be expected
[INFO] [stdout]   --> tests/derive-eq-packed.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |         self.foo == other.foo
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(ambiguous_wide_pointer_comparisons)]` on by default
[INFO] [stdout] help: use `std::ptr::addr_eq` or untyped pointers to only compare their addresses
[INFO] [stdout]    |
[INFO] [stdout] 26 |         std::ptr::addr_eq(self.foo, other.foo)
[INFO] [stdout]    |         ++++++++++++++++++        ~          +
[INFO] [stdout] help: use explicit `std::ptr::eq` method to compare metadata and addresses
[INFO] [stdout]    |
[INFO] [stdout] 26 |         std::ptr::eq(self.foo, other.foo)
[INFO] [stdout]    |         +++++++++++++        ~          +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]   --> tests/rustc-zero-sized-btreemap-insert.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::iter::Iterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/prelude/mod.rs:124:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Iterator` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `proc_macro2` is imported redundantly
[INFO] [stdout]   --> src/ast.rs:2:5
[INFO] [stdout]    |
[INFO] [stdout] 2  | use proc_macro2;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate proc_macro2;
[INFO] [stdout]    | ------------------------- the item `proc_macro2` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/ast.rs:3:5
[INFO] [stdout]    |
[INFO] [stdout] 3  | use syn;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `proc_macro2` is imported redundantly
[INFO] [stdout]   --> src/attr.rs:1:5
[INFO] [stdout]    |
[INFO] [stdout] 1  | use proc_macro2;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate proc_macro2;
[INFO] [stdout]    | ------------------------- the item `proc_macro2` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/attr.rs:2:5
[INFO] [stdout]    |
[INFO] [stdout] 2  | use syn;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/bound.rs:16:11
[INFO] [stdout]    |
[INFO] [stdout] 16 | use syn::{self, visit, GenericParam};
[INFO] [stdout]    |           ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `proc_macro2` is imported redundantly
[INFO] [stdout]   --> src/clone.rs:1:5
[INFO] [stdout]    |
[INFO] [stdout] 1  | use proc_macro2;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate proc_macro2;
[INFO] [stdout]    | ------------------------- the item `proc_macro2` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/clone.rs:6:5
[INFO] [stdout]    |
[INFO] [stdout] 6  | use syn;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `proc_macro2` is imported redundantly
[INFO] [stdout]   --> src/cmp.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | use proc_macro2;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate proc_macro2;
[INFO] [stdout]    | ------------------------- the item `proc_macro2` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/cmp.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | use syn;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `proc_macro2` is imported redundantly
[INFO] [stdout]   --> src/debug.rs:1:5
[INFO] [stdout]    |
[INFO] [stdout] 1  | use proc_macro2;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate proc_macro2;
[INFO] [stdout]    | ------------------------- the item `proc_macro2` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/debug.rs:6:5
[INFO] [stdout]    |
[INFO] [stdout] 6  | use syn;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `proc_macro2` is imported redundantly
[INFO] [stdout]   --> src/default.rs:1:5
[INFO] [stdout]    |
[INFO] [stdout] 1  | use proc_macro2;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate proc_macro2;
[INFO] [stdout]    | ------------------------- the item `proc_macro2` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/default.rs:5:5
[INFO] [stdout]    |
[INFO] [stdout] 5  | use syn;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `proc_macro2` is imported redundantly
[INFO] [stdout]   --> src/hash.rs:1:5
[INFO] [stdout]    |
[INFO] [stdout] 1  | use proc_macro2;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate proc_macro2;
[INFO] [stdout]    | ------------------------- the item `proc_macro2` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/hash.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | use syn;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `proc_macro2` is imported redundantly
[INFO] [stdout]   --> src/matcher.rs:9:19
[INFO] [stdout]    |
[INFO] [stdout] 9  | use proc_macro2::{self, TokenStream};
[INFO] [stdout]    |                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate proc_macro2;
[INFO] [stdout]    | ------------------------- the item `proc_macro2` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/matcher.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use syn;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `quote` is imported redundantly
[INFO] [stdout]   --> src/matcher.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use quote;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | extern crate quote;
[INFO] [stdout]    | ------------------- the item `quote` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `proc_macro2` is imported redundantly
[INFO] [stdout]   --> src/utils.rs:1:5
[INFO] [stdout]    |
[INFO] [stdout] 1  | use proc_macro2;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate proc_macro2;
[INFO] [stdout]    | ------------------------- the item `proc_macro2` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `syn` is imported redundantly
[INFO] [stdout]   --> src/utils.rs:6:5
[INFO] [stdout]    |
[INFO] [stdout] 6  | use syn;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate syn;
[INFO] [stdout]    | ----------------- the item `syn` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CopyArray` is never constructed
[INFO] [stdout]   --> tests/rustc-issue-28561.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | struct CopyArray<T: Copy> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Fn` is never constructed
[INFO] [stdout]    --> tests/rustc-issue-28561.rs:100:8
[INFO] [stdout]     |
[INFO] [stdout] 100 | struct Fn<A, B, C, D, E, F, G, H, I, J, K, L> {
[INFO] [stdout]     |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `span` is never read
[INFO] [stdout]   --> src/ast.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub struct Field<'a> {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 34 |     pub span: proc_macro2::Span,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Field` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 27.04s
[INFO] running `Command { std: "docker" "inspect" "5d277c816e7e5c8faac06367025313222d07052424bfc0cb5d09c6c7fb066bd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d277c816e7e5c8faac06367025313222d07052424bfc0cb5d09c6c7fb066bd7", kill_on_drop: false }`
[INFO] [stdout] 5d277c816e7e5c8faac06367025313222d07052424bfc0cb5d09c6c7fb066bd7
[INFO] checking derivative-2.2.0 against try#36dbcaee1a55543dfc181be52a69d99ff46ff62f for pr-122960-2
[INFO] extracting crate derivative 2.2.0 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate derivative 2.2.0 on toolchain 36dbcaee1a55543dfc181be52a69d99ff46ff62f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate derivative 2.2.0
[INFO] finished tweaking crates.io crate derivative 2.2.0
[INFO] tweaked toml for crates.io crate derivative 2.2.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "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" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 39fc670a2e4478b8a527726fd93d13353d6632675f61235cd36f46eb953b6523
[INFO] running `Command { std: "docker" "start" "-a" "39fc670a2e4478b8a527726fd93d13353d6632675f61235cd36f46eb953b6523", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "39fc670a2e4478b8a527726fd93d13353d6632675f61235cd36f46eb953b6523", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39fc670a2e4478b8a527726fd93d13353d6632675f61235cd36f46eb953b6523", kill_on_drop: false }`
[INFO] [stdout] 39fc670a2e4478b8a527726fd93d13353d6632675f61235cd36f46eb953b6523
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e742fc59471cc8850a3225b4c1b54b309f7be083473b5ea9eafd34f2e3f7f6d3
[INFO] running `Command { std: "docker" "start" "-a" "e742fc59471cc8850a3225b4c1b54b309f7be083473b5ea9eafd34f2e3f7f6d3", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] no edition found in manifest, probably 2015, skipping
[INFO] running `Command { std: "docker" "inspect" "e742fc59471cc8850a3225b4c1b54b309f7be083473b5ea9eafd34f2e3f7f6d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e742fc59471cc8850a3225b4c1b54b309f7be083473b5ea9eafd34f2e3f7f6d3", kill_on_drop: false }`
[INFO] [stdout] e742fc59471cc8850a3225b4c1b54b309f7be083473b5ea9eafd34f2e3f7f6d3