[INFO] fetching crate rebound-proc 0.0.1...
[INFO] checking rebound-proc-0.0.1 against try#55b3f428b4fac6790b1e8492e0b91ff2d80aec7c for pr-77035
[INFO] extracting crate rebound-proc 0.0.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate rebound-proc 0.0.1 on toolchain 55b3f428b4fac6790b1e8492e0b91ff2d80aec7c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rebound-proc 0.0.1
[INFO] finished tweaking crates.io crate rebound-proc 0.0.1
[INFO] tweaked toml for crates.io crate rebound-proc 0.0.1 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 21be72f43e9a0f27a480520ca4f0bc11c3d1c310955a1cc7176ac7c764421b5b
[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" "21be72f43e9a0f27a480520ca4f0bc11c3d1c310955a1cc7176ac7c764421b5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "21be72f43e9a0f27a480520ca4f0bc11c3d1c310955a1cc7176ac7c764421b5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21be72f43e9a0f27a480520ca4f0bc11c3d1c310955a1cc7176ac7c764421b5b", kill_on_drop: false }`
[INFO] [stdout] 21be72f43e9a0f27a480520ca4f0bc11c3d1c310955a1cc7176ac7c764421b5b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] afaec2e8c10adc394c5d79bb3141ad012668ff6ca042690654dbb15885ff70ec
[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" "afaec2e8c10adc394c5d79bb3141ad012668ff6ca042690654dbb15885ff70ec", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]     Checking proc-macro2 v1.0.24
[INFO] [stderr]     Checking quote v1.0.7
[INFO] [stderr]     Checking rebound-proc v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `attrs`
[INFO] [stdout]  --> src/rebound.rs:4:36
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn rebound(input: TokenStream, attrs: TokenStream) -> TokenStream {
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attrs`
[INFO] [stdout]  --> src/rebound.rs:4:36
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn rebound(input: TokenStream, attrs: TokenStream) -> TokenStream {
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.73s
[INFO] running `Command { std: "docker" "inspect" "afaec2e8c10adc394c5d79bb3141ad012668ff6ca042690654dbb15885ff70ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afaec2e8c10adc394c5d79bb3141ad012668ff6ca042690654dbb15885ff70ec", kill_on_drop: false }`
[INFO] [stdout] afaec2e8c10adc394c5d79bb3141ad012668ff6ca042690654dbb15885ff70ec