[INFO] fetching crate displaythis-impl 1.0.23...
[INFO] checking displaythis-impl-1.0.23 against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] extracting crate displaythis-impl 1.0.23 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate displaythis-impl 1.0.23 on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate displaythis-impl 1.0.23
[INFO] finished tweaking crates.io crate displaythis-impl 1.0.23
[INFO] tweaked toml for crates.io crate displaythis-impl 1.0.23 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "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]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 5 packages to latest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.77)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 869779b82d3fda03dcb2f192a2b365240040072cd78779ff48eabdf89a63c6a8
[INFO] running `Command { std: "docker" "start" "-a" "869779b82d3fda03dcb2f192a2b365240040072cd78779ff48eabdf89a63c6a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "869779b82d3fda03dcb2f192a2b365240040072cd78779ff48eabdf89a63c6a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "869779b82d3fda03dcb2f192a2b365240040072cd78779ff48eabdf89a63c6a8", kill_on_drop: false }`
[INFO] [stdout] 869779b82d3fda03dcb2f192a2b365240040072cd78779ff48eabdf89a63c6a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f58cfa033fe663c45a9e4fbe3eb564014485aa7dc7e49f0d7447f1fe97a2eae6
[INFO] running `Command { std: "docker" "start" "-a" "f58cfa033fe663c45a9e4fbe3eb564014485aa7dc7e49f0d7447f1fe97a2eae6", kill_on_drop: false }`
[INFO] [stderr]     Checking displaythis-impl v1.0.23 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `original` is never read
[INFO] [stdout]   --> src/ast.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct Struct<'a> {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 14 |     pub original: &'a DeriveInput,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `original` is never read
[INFO] [stdout]   --> src/ast.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Enum<'a> {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 22 |     pub original: &'a DeriveInput,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `original` is never read
[INFO] [stdout]   --> src/ast.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct Struct<'a> {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 14 |     pub original: &'a DeriveInput,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `original` is never read
[INFO] [stdout]   --> src/ast.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Enum<'a> {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 22 |     pub original: &'a DeriveInput,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `original` and `ty` are never read
[INFO] [stdout]   --> src/ast.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub struct Field<'a> {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] 37 |     pub original: &'a syn::Field,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub ty: &'a Type,
[INFO] [stdout]    |         ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `original` and `ty` are never read
[INFO] [stdout]   --> src/ast.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub struct Field<'a> {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] 37 |     pub original: &'a syn::Field,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub ty: &'a Type,
[INFO] [stdout]    |         ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "f58cfa033fe663c45a9e4fbe3eb564014485aa7dc7e49f0d7447f1fe97a2eae6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f58cfa033fe663c45a9e4fbe3eb564014485aa7dc7e49f0d7447f1fe97a2eae6", kill_on_drop: false }`
[INFO] [stdout] f58cfa033fe663c45a9e4fbe3eb564014485aa7dc7e49f0d7447f1fe97a2eae6
[INFO] checking displaythis-impl-1.0.23 against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] extracting crate displaythis-impl 1.0.23 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate displaythis-impl 1.0.23 on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate displaythis-impl 1.0.23
[INFO] finished tweaking crates.io crate displaythis-impl 1.0.23
[INFO] tweaked toml for crates.io crate displaythis-impl 1.0.23 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 5 packages to latest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.77)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fc9d0a93b395c0395964e4ffb9f9c59f74a07772ee876d2b83320b3488a13e81
[INFO] running `Command { std: "docker" "start" "-a" "fc9d0a93b395c0395964e4ffb9f9c59f74a07772ee876d2b83320b3488a13e81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fc9d0a93b395c0395964e4ffb9f9c59f74a07772ee876d2b83320b3488a13e81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc9d0a93b395c0395964e4ffb9f9c59f74a07772ee876d2b83320b3488a13e81", kill_on_drop: false }`
[INFO] [stdout] fc9d0a93b395c0395964e4ffb9f9c59f74a07772ee876d2b83320b3488a13e81
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] df432863194bee3bc2a69a41d046f3bda855ce9276c4bdd03c842eeb1b40ad6d
[INFO] running `Command { std: "docker" "start" "-a" "df432863194bee3bc2a69a41d046f3bda855ce9276c4bdd03c842eeb1b40ad6d", kill_on_drop: false }`
[INFO] [stderr]     Checking displaythis-impl v1.0.23 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `original` is never read
[INFO] [stdout]   --> src/ast.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct Struct<'a> {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 14 |     pub original: &'a DeriveInput,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `original` is never read
[INFO] [stdout]   --> src/ast.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Enum<'a> {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 22 |     pub original: &'a DeriveInput,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `original` and `ty` are never read
[INFO] [stdout]   --> src/ast.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub struct Field<'a> {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] 37 |     pub original: &'a syn::Field,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub ty: &'a Type,
[INFO] [stdout]    |         ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `original` is never read
[INFO] [stdout]   --> src/ast.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct Struct<'a> {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 14 |     pub original: &'a DeriveInput,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `original` is never read
[INFO] [stdout]   --> src/ast.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Enum<'a> {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 22 |     pub original: &'a DeriveInput,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `original` and `ty` are never read
[INFO] [stdout]   --> src/ast.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub struct Field<'a> {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] 37 |     pub original: &'a syn::Field,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub ty: &'a Type,
[INFO] [stdout]    |         ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "df432863194bee3bc2a69a41d046f3bda855ce9276c4bdd03c842eeb1b40ad6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df432863194bee3bc2a69a41d046f3bda855ce9276c4bdd03c842eeb1b40ad6d", kill_on_drop: false }`
[INFO] [stdout] df432863194bee3bc2a69a41d046f3bda855ce9276c4bdd03c842eeb1b40ad6d