[INFO] fetching crate keypath 0.2.0...
[INFO] checking keypath-0.2.0 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1
[INFO] extracting crate keypath 0.2.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate keypath 0.2.0
[INFO] finished tweaking crates.io crate keypath 0.2.0
[INFO] tweaked toml for crates.io crate keypath 0.2.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate keypath 0.2.0 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "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 6 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded keypath-proc-macros v0.2.0
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dd5ed7c27f3b4af714a21bdd59e9a6968b32a3a0b4360c746a027d1348cdcb85
[INFO] running `Command { std: "docker" "start" "-a" "dd5ed7c27f3b4af714a21bdd59e9a6968b32a3a0b4360c746a027d1348cdcb85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd5ed7c27f3b4af714a21bdd59e9a6968b32a3a0b4360c746a027d1348cdcb85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd5ed7c27f3b4af714a21bdd59e9a6968b32a3a0b4360c746a027d1348cdcb85", kill_on_drop: false }`
[INFO] [stdout] dd5ed7c27f3b4af714a21bdd59e9a6968b32a3a0b4360c746a027d1348cdcb85
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4955027c3cdf07def71dc6c1916949a84c799ba7c8831186caad47d97c0d8138
[INFO] running `Command { std: "docker" "start" "-a" "4955027c3cdf07def71dc6c1916949a84c799ba7c8831186caad47d97c0d8138", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling litrs v0.2.3
[INFO] [stderr]    Compiling keypath-proc-macros v0.2.0
[INFO] [stderr]     Checking keypath v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `kind`, `type_name`, and `depth` are never read
[INFO] [stdout]   --> src/error.rs:12:16
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct FieldError {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 12 |     pub(crate) kind: FieldErrorKind,
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 13 |     pub(crate) type_name: &'static str,
[INFO] [stdout]    |                ^^^^^^^^^
[INFO] [stdout] 14 |     // the number of *remaining* fields at which the error occured
[INFO] [stdout] 15 |     pub(crate) depth: usize,
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FieldError` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PlainStruct` is never constructed
[INFO] [stdout]  --> tests/derive-types.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct PlainStruct;
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `EmptyTupleStruct` is never constructed
[INFO] [stdout]  --> tests/derive-types.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct EmptyTupleStruct();
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SingleTupleStruct` is never constructed
[INFO] [stdout]   --> tests/derive-types.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct SingleTupleStruct(bool);
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MultiTupleStruct` is never constructed
[INFO] [stdout]   --> tests/derive-types.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct MultiTupleStruct(bool, i64, String);
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `EmptyFieldStruct` is never constructed
[INFO] [stdout]   --> tests/derive-types.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | struct EmptyFieldStruct {}
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SingleFieldStruct` is never constructed
[INFO] [stdout]   --> tests/derive-types.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct SingleFieldStruct {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MultiFieldStruct` is never constructed
[INFO] [stdout]   --> tests/derive-types.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct MultiFieldStruct {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `kind`, `type_name`, and `depth` are never read
[INFO] [stdout]   --> src/error.rs:12:16
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct FieldError {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 12 |     pub(crate) kind: FieldErrorKind,
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 13 |     pub(crate) type_name: &'static str,
[INFO] [stdout]    |                ^^^^^^^^^
[INFO] [stdout] 14 |     // the number of *remaining* fields at which the error occured
[INFO] [stdout] 15 |     pub(crate) depth: usize,
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FieldError` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.72s
[INFO] running `Command { std: "docker" "inspect" "4955027c3cdf07def71dc6c1916949a84c799ba7c8831186caad47d97c0d8138", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4955027c3cdf07def71dc6c1916949a84c799ba7c8831186caad47d97c0d8138", kill_on_drop: false }`
[INFO] [stdout] 4955027c3cdf07def71dc6c1916949a84c799ba7c8831186caad47d97c0d8138