[INFO] fetching crate derive-enum-rotate 0.1.1...
[INFO] checking derive-enum-rotate-0.1.1 against a5689b034ad287112f709693384a37f1377eb9cc for pr-129249-3
[INFO] extracting crate derive-enum-rotate 0.1.1 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate derive-enum-rotate 0.1.1
[INFO] finished tweaking crates.io crate derive-enum-rotate 0.1.1
[INFO] tweaked toml for crates.io crate derive-enum-rotate 0.1.1 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate derive-enum-rotate 0.1.1 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 8 packages to highest compatible versions
[INFO] [stderr]       Adding syn v2.0.119 (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-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] af9061c8a4e2812e8415fe72e47c02541d64807d1b4d879e7073be08c3172e83
[INFO] running `Command { std: "docker" "start" "af9061c8a4e2812e8415fe72e47c02541d64807d1b4d879e7073be08c3172e83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af9061c8a4e2812e8415fe72e47c02541d64807d1b4d879e7073be08c3172e83", 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" "af9061c8a4e2812e8415fe72e47c02541d64807d1b4d879e7073be08c3172e83" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af9061c8a4e2812e8415fe72e47c02541d64807d1b4d879e7073be08c3172e83", 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" "af9061c8a4e2812e8415fe72e47c02541d64807d1b4d879e7073be08c3172e83" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-ident v1.0.27
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking proc-macro2 v1.0.107
[INFO] [stderr]     Checking quote v1.0.47
[INFO] [stderr]     Checking syn v2.0.119
[INFO] [stderr]     Checking derive-enum-rotate v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: useless conversion to the same type: `proc_macro2::Span`
[INFO] [stdout]   --> src/lib.rs:39:26
[INFO] [stdout]    |
[INFO] [stdout] 39 |             idents_span: paren_content.span().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] 39 -             idents_span: paren_content.span().into(),
[INFO] [stdout] 39 +             idents_span: paren_content.span(),
[INFO] [stdout]    |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]    |
[INFO] [stdout] 39 -             idents_span: paren_content.span().into(),
[INFO] [stdout] 39 +             idents_span: <proc_macro2::Span as Into<_>>::into(paren_content.span()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `derive-enum-rotate` (lib) due to 1 previous error
[INFO] [stdout] error: useless conversion to the same type: `proc_macro2::Span`
[INFO] [stdout]   --> src/lib.rs:39:26
[INFO] [stdout]    |
[INFO] [stdout] 39 |             idents_span: paren_content.span().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] 39 -             idents_span: paren_content.span().into(),
[INFO] [stdout] 39 +             idents_span: paren_content.span(),
[INFO] [stdout]    |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]    |
[INFO] [stdout] 39 -             idents_span: paren_content.span().into(),
[INFO] [stdout] 39 +             idents_span: <proc_macro2::Span as Into<_>>::into(paren_content.span()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `derive-enum-rotate` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "af9061c8a4e2812e8415fe72e47c02541d64807d1b4d879e7073be08c3172e83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af9061c8a4e2812e8415fe72e47c02541d64807d1b4d879e7073be08c3172e83", kill_on_drop: false }`
[INFO] [stdout] af9061c8a4e2812e8415fe72e47c02541d64807d1b4d879e7073be08c3172e83
