[INFO] fetching crate optargs-macro 0.1.0...
[INFO] checking optargs-macro-0.1.0 against master#836c31742687ba4e2f857b5b698e1e9e6b67619c for pr-81789
[INFO] extracting crate optargs-macro 0.1.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate optargs-macro 0.1.0 on toolchain 836c31742687ba4e2f857b5b698e1e9e6b67619c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate optargs-macro 0.1.0
[INFO] finished tweaking crates.io crate optargs-macro 0.1.0
[INFO] tweaked toml for crates.io crate optargs-macro 0.1.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e8da816f56a9c70b73e9a92990e30dbef0bc5d66baa226016f63dcf0a062db68
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e8da816f56a9c70b73e9a92990e30dbef0bc5d66baa226016f63dcf0a062db68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8da816f56a9c70b73e9a92990e30dbef0bc5d66baa226016f63dcf0a062db68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8da816f56a9c70b73e9a92990e30dbef0bc5d66baa226016f63dcf0a062db68", kill_on_drop: false }`
[INFO] [stdout] e8da816f56a9c70b73e9a92990e30dbef0bc5d66baa226016f63dcf0a062db68
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fde846f83fca61a459e074f91e2105003b655ce745cbc459f218489e2582eace
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fde846f83fca61a459e074f91e2105003b655ce745cbc459f218489e2582eace", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]     Checking unicode-xid v0.2.1
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling syn v1.0.70
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]     Checking optargs-macro v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `syn::parse_macro_input`
[INFO] [stdout]  --> src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use syn::parse_macro_input;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ParseBuffer`, `discouraged::Speculative`
[INFO] [stdout]  --> src/optfn.rs:1:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | use syn::parse::{discouraged::Speculative, ParseBuffer};
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Error`, `ExprClosure`, `Expr`, `Ident`, `LitBool`, `LitStr`, `Path`, `Span`, `TokenStreamExt`, `Token`, `ext::IdentExt`, `proc_macro::TokenStream`, `quote`, `token`
[INFO] [stdout]   --> src/optfn.rs:4:5
[INFO] [stdout]    |
[INFO] [stdout] 4  |     proc_macro::TokenStream,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 5  |     proc_macro2::{Span, TokenStream as TokenStream2},
[INFO] [stdout]    |                   ^^^^
[INFO] [stdout] 6  |     quote::{quote, ToTokens, TokenStreamExt},
[INFO] [stdout]    |             ^^^^^            ^^^^^^^^^^^^^^
[INFO] [stdout] 7  |     syn::{
[INFO] [stdout] 8  |         ext::IdentExt,
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout] 9  |         parse::{Parse, ParseStream},
[INFO] [stdout] 10 |         token, Error, Expr, ExprClosure, Ident, LitBool, LitStr, Path, Result, Token,
[INFO] [stdout]    |         ^^^^^  ^^^^^  ^^^^  ^^^^^^^^^^^  ^^^^^  ^^^^^^^  ^^^^^^  ^^^^          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `syn::parse_macro_input`
[INFO] [stdout]  --> src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use syn::parse_macro_input;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ParseBuffer`, `discouraged::Speculative`
[INFO] [stdout]  --> src/optfn.rs:1:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | use syn::parse::{discouraged::Speculative, ParseBuffer};
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Error`, `ExprClosure`, `Expr`, `Ident`, `LitBool`, `LitStr`, `Path`, `Span`, `TokenStreamExt`, `Token`, `ext::IdentExt`, `proc_macro::TokenStream`, `quote`, `token`
[INFO] [stdout]   --> src/optfn.rs:4:5
[INFO] [stdout]    |
[INFO] [stdout] 4  |     proc_macro::TokenStream,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 5  |     proc_macro2::{Span, TokenStream as TokenStream2},
[INFO] [stdout]    |                   ^^^^
[INFO] [stdout] 6  |     quote::{quote, ToTokens, TokenStreamExt},
[INFO] [stdout]    |             ^^^^^            ^^^^^^^^^^^^^^
[INFO] [stdout] 7  |     syn::{
[INFO] [stdout] 8  |         ext::IdentExt,
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout] 9  |         parse::{Parse, ParseStream},
[INFO] [stdout] 10 |         token, Error, Expr, ExprClosure, Ident, LitBool, LitStr, Path, Result, Token,
[INFO] [stdout]    |         ^^^^^  ^^^^^  ^^^^  ^^^^^^^^^^^  ^^^^^  ^^^^^^^  ^^^^^^  ^^^^          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]   --> src/lib.rs:19:29
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn derive_typed_builder(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
[INFO] [stdout]    |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tokens`
[INFO] [stdout]   --> src/optfn.rs:16:25
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn to_tokens(&self, tokens: &mut TokenStream2) {
[INFO] [stdout]    |                         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]   --> src/optfn.rs:22:14
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn parse(input: ParseStream) -> Result<Self> {
[INFO] [stdout]    |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]   --> src/lib.rs:19:29
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn derive_typed_builder(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
[INFO] [stdout]    |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tokens`
[INFO] [stdout]   --> src/optfn.rs:16:25
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn to_tokens(&self, tokens: &mut TokenStream2) {
[INFO] [stdout]    |                         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]   --> src/optfn.rs:22:14
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn parse(input: ParseStream) -> Result<Self> {
[INFO] [stdout]    |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.71s
[INFO] running `Command { std: "docker" "inspect" "fde846f83fca61a459e074f91e2105003b655ce745cbc459f218489e2582eace", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fde846f83fca61a459e074f91e2105003b655ce745cbc459f218489e2582eace", kill_on_drop: false }`
[INFO] [stdout] fde846f83fca61a459e074f91e2105003b655ce745cbc459f218489e2582eace