[INFO] fetching crate preftool-derive-core 0.2.0... [INFO] checking preftool-derive-core-0.2.0 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1 [INFO] extracting crate preftool-derive-core 0.2.0 into /workspace/builds/worker-3-tc2/source [INFO] started tweaking crates.io crate preftool-derive-core 0.2.0 [INFO] finished tweaking crates.io crate preftool-derive-core 0.2.0 [INFO] tweaked toml for crates.io crate preftool-derive-core 0.2.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate preftool-derive-core 0.2.0 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 17 packages to latest compatible versions [INFO] [stderr] Adding darling v0.9.0 (available: v0.21.3) [INFO] [stderr] Adding proc-macro2 v0.4.30 (available: v1.0.101) [INFO] [stderr] Adding quote v0.6.13 (available: v1.0.40) [INFO] [stderr] Adding syn v0.15.44 (available: v2.0.106) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 569df8be62078ca5830cef6adb124425295d2efa78ee3f965ff101cef3ad459a [INFO] running `Command { std: "docker" "start" "-a" "569df8be62078ca5830cef6adb124425295d2efa78ee3f965ff101cef3ad459a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "569df8be62078ca5830cef6adb124425295d2efa78ee3f965ff101cef3ad459a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "569df8be62078ca5830cef6adb124425295d2efa78ee3f965ff101cef3ad459a", kill_on_drop: false }` [INFO] [stdout] 569df8be62078ca5830cef6adb124425295d2efa78ee3f965ff101cef3ad459a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 46dfe29cbf35ccac02df42f81af9e0af2fc55d9361c9d3fc63cecc4711b73419 [INFO] running `Command { std: "docker" "start" "-a" "46dfe29cbf35ccac02df42f81af9e0af2fc55d9361c9d3fc63cecc4711b73419", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Checking memchr v2.7.5 [INFO] [stderr] Compiling strsim v0.7.0 [INFO] [stderr] Compiling fnv v1.0.7 [INFO] [stderr] Compiling ident_case v1.0.1 [INFO] [stderr] Checking regex-syntax v0.8.6 [INFO] [stderr] Checking lazy_static v1.5.0 [INFO] [stderr] Checking quote v0.6.13 [INFO] [stderr] Checking aho-corasick v1.1.3 [INFO] [stderr] Checking regex-automata v0.4.10 [INFO] [stderr] Checking darling_core v0.9.0 [INFO] [stderr] Checking regex v1.11.2 [INFO] [stderr] Checking Inflector v0.11.4 [INFO] [stderr] Compiling darling_macro v0.9.0 [INFO] [stderr] Checking darling v0.9.0 [INFO] [stderr] Checking preftool-derive-core v0.2.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `attrs` is never read [INFO] [stdout] --> src/lib.rs:73:3 [INFO] [stdout] | [INFO] [stdout] 59 | struct FieldOptions { [INFO] [stdout] | ------------ field in this struct [INFO] [stdout] ... [INFO] [stdout] 73 | attrs: Vec, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `FieldOptions` 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: fields `ident` and `fields` are never read [INFO] [stdout] --> src/lib.rs:107:3 [INFO] [stdout] | [INFO] [stdout] 106 | struct VariantOptions { [INFO] [stdout] | -------------- fields in this struct [INFO] [stdout] 107 | ident: syn::Ident, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 108 | fields: darling::ast::Fields, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `VariantOptions` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `attrs` is never read [INFO] [stdout] --> src/lib.rs:73:3 [INFO] [stdout] | [INFO] [stdout] 59 | struct FieldOptions { [INFO] [stdout] | ------------ field in this struct [INFO] [stdout] ... [INFO] [stdout] 73 | attrs: Vec, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `FieldOptions` 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: fields `ident` and `fields` are never read [INFO] [stdout] --> src/lib.rs:107:3 [INFO] [stdout] | [INFO] [stdout] 106 | struct VariantOptions { [INFO] [stdout] | -------------- fields in this struct [INFO] [stdout] 107 | ident: syn::Ident, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 108 | fields: darling::ast::Fields, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `VariantOptions` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.86s [INFO] running `Command { std: "docker" "inspect" "46dfe29cbf35ccac02df42f81af9e0af2fc55d9361c9d3fc63cecc4711b73419", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "46dfe29cbf35ccac02df42f81af9e0af2fc55d9361c9d3fc63cecc4711b73419", kill_on_drop: false }` [INFO] [stdout] 46dfe29cbf35ccac02df42f81af9e0af2fc55d9361c9d3fc63cecc4711b73419