[INFO] fetching crate auto_from 0.3.0...
[INFO] checking auto_from-0.3.0 against master#e59540968e0c6fc3c37d92a639b83fc8fcee5e81 for pr-114559
[INFO] extracting crate auto_from 0.3.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate auto_from 0.3.0 on toolchain e59540968e0c6fc3c37d92a639b83fc8fcee5e81
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e59540968e0c6fc3c37d92a639b83fc8fcee5e81" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate auto_from 0.3.0
[INFO] finished tweaking crates.io crate auto_from 0.3.0
[INFO] tweaked toml for crates.io crate auto_from 0.3.0 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" "+e59540968e0c6fc3c37d92a639b83fc8fcee5e81" "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" "+e59540968e0c6fc3c37d92a639b83fc8fcee5e81" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+e59540968e0c6fc3c37d92a639b83fc8fcee5e81" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ef81d3f8bead52be670596910e62de0d58c0dc3bfa597313f079b073630bf2b1
[INFO] running `Command { std: "docker" "start" "-a" "ef81d3f8bead52be670596910e62de0d58c0dc3bfa597313f079b073630bf2b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef81d3f8bead52be670596910e62de0d58c0dc3bfa597313f079b073630bf2b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef81d3f8bead52be670596910e62de0d58c0dc3bfa597313f079b073630bf2b1", kill_on_drop: false }`
[INFO] [stdout] ef81d3f8bead52be670596910e62de0d58c0dc3bfa597313f079b073630bf2b1
[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@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+e59540968e0c6fc3c37d92a639b83fc8fcee5e81" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8c1ab1fdaff4c3bf18b7c3a080eeb4e65f040411d7dca593c817f052601d9c32
[INFO] running `Command { std: "docker" "start" "-a" "8c1ab1fdaff4c3bf18b7c3a080eeb4e65f040411d7dca593c817f052601d9c32", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking unicode-xid v0.1.0
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]     Checking auto_from v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&syn::Field` instead of cloning the inner type
[INFO] [stdout]   --> src/lib.rs:79:69
[INFO] [stdout]    |
[INFO] [stdout] 79 |             Some(ref pair) if named.named.len() == 1 => pair.value().clone(),
[INFO] [stdout]    |                                                                     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&syn::Field` instead of cloning the inner type
[INFO] [stdout]   --> src/lib.rs:83:73
[INFO] [stdout]    |
[INFO] [stdout] 83 |             Some(ref pair) if unnamed.unnamed.len() == 1 => pair.value().clone(),
[INFO] [stdout]    |                                                                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&syn::Field` instead of cloning the inner type
[INFO] [stdout]   --> src/lib.rs:79:69
[INFO] [stdout]    |
[INFO] [stdout] 79 |             Some(ref pair) if named.named.len() == 1 => pair.value().clone(),
[INFO] [stdout]    |                                                                     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&syn::Field` instead of cloning the inner type
[INFO] [stdout]   --> src/lib.rs:83:73
[INFO] [stdout]    |
[INFO] [stdout] 83 |             Some(ref pair) if unnamed.unnamed.len() == 1 => pair.value().clone(),
[INFO] [stdout]    |                                                                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&syn::Field` instead of cloning the inner type
[INFO] [stdout]   --> src/lib.rs:79:69
[INFO] [stdout]    |
[INFO] [stdout] 79 |             Some(ref pair) if named.named.len() == 1 => pair.value().clone(),
[INFO] [stdout]    |                                                                     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&syn::Field` instead of cloning the inner type
[INFO] [stdout]   --> src/lib.rs:83:73
[INFO] [stdout]    |
[INFO] [stdout] 83 |             Some(ref pair) if unnamed.unnamed.len() == 1 => pair.value().clone(),
[INFO] [stdout]    |                                                                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]  --> examples/named_fields.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Long { value: i64 },
[INFO] [stdout]   |     ----   ^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `SkippedInt` is never constructed
[INFO] [stdout]  --> examples/skip.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum Foo {
[INFO] [stdout]   |      --- variant in this enum
[INFO] [stdout] 5 |     #[auto_from(skip)]
[INFO] [stdout] 6 |     SkippedInt(i32),
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Foo` 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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.68s
[INFO] running `Command { std: "docker" "inspect" "8c1ab1fdaff4c3bf18b7c3a080eeb4e65f040411d7dca593c817f052601d9c32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c1ab1fdaff4c3bf18b7c3a080eeb4e65f040411d7dca593c817f052601d9c32", kill_on_drop: false }`
[INFO] [stdout] 8c1ab1fdaff4c3bf18b7c3a080eeb4e65f040411d7dca593c817f052601d9c32
