[INFO] fetching crate pdf_derive 0.2.0...
[INFO] checking pdf_derive-0.2.0 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] extracting crate pdf_derive 0.2.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate pdf_derive 0.2.0
[INFO] finished tweaking crates.io crate pdf_derive 0.2.0
[INFO] tweaked toml for crates.io crate pdf_derive 0.2.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate pdf_derive 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 4 packages to latest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (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-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 16f7a7d0476c8cff3f0506f77aa56b892ed35c73898fa899a8305972b76981ab
[INFO] running `Command { std: "docker" "start" "-a" "16f7a7d0476c8cff3f0506f77aa56b892ed35c73898fa899a8305972b76981ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "16f7a7d0476c8cff3f0506f77aa56b892ed35c73898fa899a8305972b76981ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16f7a7d0476c8cff3f0506f77aa56b892ed35c73898fa899a8305972b76981ab", kill_on_drop: false }`
[INFO] [stdout] 16f7a7d0476c8cff3f0506f77aa56b892ed35c73898fa899a8305972b76981ab
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fc600083269dcfbe7a219a2b65651a8c9113cdfaf2dd04565132cc21c26ca01d
[INFO] running `Command { std: "docker" "start" "-a" "fc600083269dcfbe7a219a2b65651a8c9113cdfaf2dd04565132cc21c26ca01d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]     Checking unicode-ident v1.0.18
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking quote v1.0.40
[INFO] [stderr]     Checking pdf_derive v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `punctuated::Punctuated` and `token::Where`
[INFO] [stdout]   --> src/lib.rs:99:14
[INFO] [stdout]    |
[INFO] [stdout] 99 | use syn::{*, punctuated::Punctuated, token::Where};
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attrs`
[INFO] [stdout]    --> src/lib.rs:273:9
[INFO] [stdout]     |
[INFO] [stdout] 273 |     let attrs = GlobalAttrs::from_ast(ast);
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_attrs`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/lib.rs:457:85
[INFO] [stdout]     |
[INFO] [stdout] 457 |                 let labels: Vec<Ident> = fields.unnamed.iter().enumerate().map(|(i, f)| {
[INFO] [stdout]     |                                                                                     ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:755:25
[INFO] [stdout]     |
[INFO] [stdout] 755 |     let (impl_generics, mut ty_generics, where_clause) = generics.split_for_impl();
[INFO] [stdout]     |                         ----^^^^^^^^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `punctuated::Punctuated` and `token::Where`
[INFO] [stdout]   --> src/lib.rs:99:14
[INFO] [stdout]    |
[INFO] [stdout] 99 | use syn::{*, punctuated::Punctuated, token::Where};
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attrs`
[INFO] [stdout]    --> src/lib.rs:273:9
[INFO] [stdout]     |
[INFO] [stdout] 273 |     let attrs = GlobalAttrs::from_ast(ast);
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_attrs`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/lib.rs:457:85
[INFO] [stdout]     |
[INFO] [stdout] 457 |                 let labels: Vec<Ident> = fields.unnamed.iter().enumerate().map(|(i, f)| {
[INFO] [stdout]     |                                                                                     ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:755:25
[INFO] [stdout]     |
[INFO] [stdout] 755 |     let (impl_generics, mut ty_generics, where_clause) = generics.split_for_impl();
[INFO] [stdout]     |                         ----^^^^^^^^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.02s
[INFO] running `Command { std: "docker" "inspect" "fc600083269dcfbe7a219a2b65651a8c9113cdfaf2dd04565132cc21c26ca01d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc600083269dcfbe7a219a2b65651a8c9113cdfaf2dd04565132cc21c26ca01d", kill_on_drop: false }`
[INFO] [stdout] fc600083269dcfbe7a219a2b65651a8c9113cdfaf2dd04565132cc21c26ca01d