[INFO] fetching crate jthread 0.1.1...
[INFO] checking jthread-0.1.1 against master#f167efad2f51088d86180ee89177b3d7c9e7c2f5 for pr-129543
[INFO] extracting crate jthread 0.1.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate jthread 0.1.1 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 jthread 0.1.1
[INFO] finished tweaking crates.io crate jthread 0.1.1
[INFO] tweaked toml for crates.io crate jthread 0.1.1 written to /workspace/builds/worker-6-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]     Updating crates.io index
[INFO] [stderr]      Locking 71 packages to latest compatible versions
[INFO] [stderr]       Adding anes v0.1.6 (latest: v0.2.0)
[INFO] [stderr]       Adding itertools v0.10.5 (latest: v0.13.0)
[INFO] [stderr]       Adding windows-sys v0.52.0 (latest: v0.59.0)
[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-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" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 706f33aa23ebc99a6d8ae7a0ff58e04eaf374f260e59a1ca23bcfa942b80ac43
[INFO] running `Command { std: "docker" "start" "-a" "706f33aa23ebc99a6d8ae7a0ff58e04eaf374f260e59a1ca23bcfa942b80ac43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "706f33aa23ebc99a6d8ae7a0ff58e04eaf374f260e59a1ca23bcfa942b80ac43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "706f33aa23ebc99a6d8ae7a0ff58e04eaf374f260e59a1ca23bcfa942b80ac43", kill_on_drop: false }`
[INFO] [stdout] 706f33aa23ebc99a6d8ae7a0ff58e04eaf374f260e59a1ca23bcfa942b80ac43
[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" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 62e79e9732f3a17ebfd1aafb01e9b9bf2674d9c73f73e6aeef88971abc74bc74
[INFO] running `Command { std: "docker" "start" "-a" "62e79e9732f3a17ebfd1aafb01e9b9bf2674d9c73f73e6aeef88971abc74bc74", kill_on_drop: false }`
[INFO] [stderr]     Checking jthread v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking criterion v0.5.1
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/lib.rs:553:17
[INFO] [stdout]     |
[INFO] [stdout] 553 |     struct Fork(u32);
[INFO] [stdout]     |            ---- ^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `Fork` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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 2.49s
[INFO] running `Command { std: "docker" "inspect" "62e79e9732f3a17ebfd1aafb01e9b9bf2674d9c73f73e6aeef88971abc74bc74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62e79e9732f3a17ebfd1aafb01e9b9bf2674d9c73f73e6aeef88971abc74bc74", kill_on_drop: false }`
[INFO] [stdout] 62e79e9732f3a17ebfd1aafb01e9b9bf2674d9c73f73e6aeef88971abc74bc74