[INFO] fetching crate lain_derive 0.5.5...
[INFO] checking lain_derive-0.5.5 against a5689b034ad287112f709693384a37f1377eb9cc for pr-129249-3
[INFO] extracting crate lain_derive 0.5.5 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate lain_derive 0.5.5
[INFO] finished tweaking crates.io crate lain_derive 0.5.5
[INFO] tweaked toml for crates.io crate lain_derive 0.5.5 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate lain_derive 0.5.5 on toolchain a5689b034ad287112f709693384a37f1377eb9cc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "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" "+a5689b034ad287112f709693384a37f1377eb9cc" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 6 packages to highest compatible versions
[INFO] [stderr]       Adding proc-macro2 v0.4.30 (available: v1.0.107)
[INFO] [stderr]       Adding quote v0.6.13 (available: v1.0.47)
[INFO] [stderr]       Adding syn v0.15.44 (available: v3.0.9)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] b37fa78491b417f53bf587c859b033de5edce178de6817ea68a2fc49de1509d2
[INFO] running `Command { std: "docker" "start" "b37fa78491b417f53bf587c859b033de5edce178de6817ea68a2fc49de1509d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b37fa78491b417f53bf587c859b033de5edce178de6817ea68a2fc49de1509d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "b37fa78491b417f53bf587c859b033de5edce178de6817ea68a2fc49de1509d2" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b37fa78491b417f53bf587c859b033de5edce178de6817ea68a2fc49de1509d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "b37fa78491b417f53bf587c859b033de5edce178de6817ea68a2fc49de1509d2" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking log v0.4.34
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking proc-macro2 v0.4.30
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]     Checking lain_derive v0.5.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `generics` and `original` are never read
[INFO] [stdout]   --> src/internals/ast.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout]  8 | pub struct Container<'a> {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 16 |     pub generics: &'a syn::Generics,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 17 |     /// Original input.
[INFO] [stdout] 18 |     pub original: &'a syn::DeriveInput,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `proc_macro2::TokenStream`
[INFO] [stdout]    --> src/lib.rs:256:9
[INFO] [stdout]     |
[INFO] [stdout] 256 | /         mutations::expand_new_fuzzed(&input)
[INFO] [stdout] 257 | |             .unwrap_or_else(to_compile_errors)
[INFO] [stdout] 258 | |             .into(),
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 257 -             .unwrap_or_else(to_compile_errors)
[INFO] [stdout] 258 -             .into(),
[INFO] [stdout] 257 +             .unwrap_or_else(to_compile_errors),
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 256 ~         <proc_macro2::TokenStream as Into<_>>::into(mutations::expand_new_fuzzed(&input)
[INFO] [stdout] 257 ~             .unwrap_or_else(to_compile_errors)),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `proc_macro2::TokenStream`
[INFO] [stdout]    --> src/lib.rs:261:9
[INFO] [stdout]     |
[INFO] [stdout] 261 | /         mutations::expand_mutatable(&input)
[INFO] [stdout] 262 | |             .unwrap_or_else(to_compile_errors)
[INFO] [stdout] 263 | |             .into(),
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 262 -             .unwrap_or_else(to_compile_errors)
[INFO] [stdout] 263 -             .into(),
[INFO] [stdout] 262 +             .unwrap_or_else(to_compile_errors),
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 261 ~         <proc_macro2::TokenStream as Into<_>>::into(mutations::expand_mutatable(&input)
[INFO] [stdout] 262 ~             .unwrap_or_else(to_compile_errors)),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/internals/attr.rs:127:22
[INFO] [stdout]     |
[INFO] [stdout] 127 |     pub fn lain_path(&self) -> Cow<syn::Path> {
[INFO] [stdout]     |                      ^^^^^     ^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 127 |     pub fn lain_path(&self) -> Cow<'_, syn::Path> {
[INFO] [stdout]     |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lain_derive` (lib test) due to 2 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: fields `generics` and `original` are never read
[INFO] [stdout]   --> src/internals/ast.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout]  8 | pub struct Container<'a> {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 16 |     pub generics: &'a syn::Generics,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 17 |     /// Original input.
[INFO] [stdout] 18 |     pub original: &'a syn::DeriveInput,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `proc_macro2::TokenStream`
[INFO] [stdout]    --> src/lib.rs:256:9
[INFO] [stdout]     |
[INFO] [stdout] 256 | /         mutations::expand_new_fuzzed(&input)
[INFO] [stdout] 257 | |             .unwrap_or_else(to_compile_errors)
[INFO] [stdout] 258 | |             .into(),
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 257 -             .unwrap_or_else(to_compile_errors)
[INFO] [stdout] 258 -             .into(),
[INFO] [stdout] 257 +             .unwrap_or_else(to_compile_errors),
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 256 ~         <proc_macro2::TokenStream as Into<_>>::into(mutations::expand_new_fuzzed(&input)
[INFO] [stdout] 257 ~             .unwrap_or_else(to_compile_errors)),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `proc_macro2::TokenStream`
[INFO] [stdout]    --> src/lib.rs:261:9
[INFO] [stdout]     |
[INFO] [stdout] 261 | /         mutations::expand_mutatable(&input)
[INFO] [stdout] 262 | |             .unwrap_or_else(to_compile_errors)
[INFO] [stdout] 263 | |             .into(),
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 262 -             .unwrap_or_else(to_compile_errors)
[INFO] [stdout] 263 -             .into(),
[INFO] [stdout] 262 +             .unwrap_or_else(to_compile_errors),
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 261 ~         <proc_macro2::TokenStream as Into<_>>::into(mutations::expand_mutatable(&input)
[INFO] [stdout] 262 ~             .unwrap_or_else(to_compile_errors)),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/internals/attr.rs:127:22
[INFO] [stdout]     |
[INFO] [stdout] 127 |     pub fn lain_path(&self) -> Cow<syn::Path> {
[INFO] [stdout]     |                      ^^^^^     ^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 127 |     pub fn lain_path(&self) -> Cow<'_, syn::Path> {
[INFO] [stdout]     |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lain_derive` (lib) due to 2 previous errors; 2 warnings emitted
[INFO] [stderr] warning: unused dependency `byteorder`
[INFO] [stderr]  --> Cargo.toml:1:15
[INFO] [stderr]   |
[INFO] [stderr] 1 | [dependencies.byteorder]
[INFO] [stderr]   |               ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `cargo::unused_dependencies` is set to `warn` by default
[INFO] [stderr] help: consider removing the dependency on `byteorder`
[INFO] [stderr] warning: `lain_derive` (manifest) generated 1 warning
[INFO] running `Command { std: "docker" "inspect" "b37fa78491b417f53bf587c859b033de5edce178de6817ea68a2fc49de1509d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b37fa78491b417f53bf587c859b033de5edce178de6817ea68a2fc49de1509d2", kill_on_drop: false }`
[INFO] [stdout] b37fa78491b417f53bf587c859b033de5edce178de6817ea68a2fc49de1509d2
