[INFO] fetching crate serry-derive 0.1.0...
[INFO] checking serry-derive-0.1.0 against master#f167efad2f51088d86180ee89177b3d7c9e7c2f5 for pr-129543
[INFO] extracting crate serry-derive 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate serry-derive 0.1.0 on toolchain f167efad2f51088d86180ee89177b3d7c9e7c2f5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serry-derive 0.1.0
[INFO] finished tweaking crates.io crate serry-derive 0.1.0
[INFO] tweaked toml for crates.io crate serry-derive 0.1.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 5 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 10979723ee048a79a4bfb0ed2341a7ba6499a33c2b0b2ffd6263782782f0da38
[INFO] running `Command { std: "docker" "start" "-a" "10979723ee048a79a4bfb0ed2341a7ba6499a33c2b0b2ffd6263782782f0da38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "10979723ee048a79a4bfb0ed2341a7ba6499a33c2b0b2ffd6263782782f0da38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10979723ee048a79a4bfb0ed2341a7ba6499a33c2b0b2ffd6263782782f0da38", kill_on_drop: false }`
[INFO] [stdout] 10979723ee048a79a4bfb0ed2341a7ba6499a33c2b0b2ffd6263782782f0da38
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a7c927d626d9454cde813ab0fb25de8f768a134cc85fd68eca766cf6f73bd73f
[INFO] running `Command { std: "docker" "start" "-a" "a7c927d626d9454cde813ab0fb25de8f768a134cc85fd68eca766cf6f73bd73f", kill_on_drop: false }`
[INFO] [stderr]     Checking syn v2.0.77
[INFO] [stderr]     Checking serry-derive v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function `all` is never used
[INFO] [stdout]   --> src/sized.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |     impl Predict {
[INFO] [stdout]    |     ------------ associated function in this implementation
[INFO] [stdout] 29 |         fn all(v: impl ToTokens) -> Self {
[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: associated function `all` is never used
[INFO] [stdout]   --> src/sized.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |     impl Predict {
[INFO] [stdout]    |     ------------ associated function in this implementation
[INFO] [stdout] 29 |         fn all(v: impl ToTokens) -> Self {
[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 2.18s
[INFO] running `Command { std: "docker" "inspect" "a7c927d626d9454cde813ab0fb25de8f768a134cc85fd68eca766cf6f73bd73f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7c927d626d9454cde813ab0fb25de8f768a134cc85fd68eca766cf6f73bd73f", kill_on_drop: false }`
[INFO] [stdout] a7c927d626d9454cde813ab0fb25de8f768a134cc85fd68eca766cf6f73bd73f