[INFO] cloning repository https://github.com/Kyuuhachi/syn_derive
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Kyuuhachi/syn_derive" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKyuuhachi%2Fsyn_derive", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKyuuhachi%2Fsyn_derive'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c84213edb2a24688c1518e5794231c2044fc33e3
[INFO] checking Kyuuhachi/syn_derive/c84213edb2a24688c1518e5794231c2044fc33e3 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKyuuhachi%2Fsyn_derive" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Kyuuhachi/syn_derive on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Kyuuhachi/syn_derive
[INFO] finished tweaking git repo https://github.com/Kyuuhachi/syn_derive
[INFO] tweaked toml for git repo https://github.com/Kyuuhachi/syn_derive written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Kyuuhachi/syn_derive already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c742e0f3fe57c8fcd7e51781f50d1a1650252bfb7fe089c9d2163793f1f983ff
[INFO] running `Command { std: "docker" "start" "-a" "c742e0f3fe57c8fcd7e51781f50d1a1650252bfb7fe089c9d2163793f1f983ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c742e0f3fe57c8fcd7e51781f50d1a1650252bfb7fe089c9d2163793f1f983ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c742e0f3fe57c8fcd7e51781f50d1a1650252bfb7fe089c9d2163793f1f983ff", kill_on_drop: false }`
[INFO] [stdout] c742e0f3fe57c8fcd7e51781f50d1a1650252bfb7fe089c9d2163793f1f983ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a1b559a5f41ed3d1205c0f98cd852d63d9c7834946ab34ca989192b70ace5e27
[INFO] running `Command { std: "docker" "start" "-a" "a1b559a5f41ed3d1205c0f98cd852d63d9c7834946ab34ca989192b70ace5e27", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]     Checking syn v2.0.31
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking proc-macro-error v1.0.4
[INFO] [stderr]     Checking syn_derive v0.1.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `warning` is never used
[INFO] [stdout]    --> src/lib.rs:160:5
[INFO] [stdout]     |
[INFO] [stdout] 159 | trait SpanError: Spanned {
[INFO] [stdout]     |       --------- method in this trait
[INFO] [stdout] 160 |     fn warning(&self, text: &str) -> Diagnostic {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `warning` is never used
[INFO] [stdout]    --> src/lib.rs:160:5
[INFO] [stdout]     |
[INFO] [stdout] 159 | trait SpanError: Spanned {
[INFO] [stdout]     |       --------- method in this trait
[INFO] [stdout] 160 |     fn warning(&self, text: &str) -> Diagnostic {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.76s
[INFO] running `Command { std: "docker" "inspect" "a1b559a5f41ed3d1205c0f98cd852d63d9c7834946ab34ca989192b70ace5e27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1b559a5f41ed3d1205c0f98cd852d63d9c7834946ab34ca989192b70ace5e27", kill_on_drop: false }`
[INFO] [stdout] a1b559a5f41ed3d1205c0f98cd852d63d9c7834946ab34ca989192b70ace5e27