[INFO] fetching crate spmc_ring 0.1.0...
[INFO] checking spmc_ring-0.1.0 against master#8c32e313cccf7df531e2d49ffb8227bb92304aee for pr-145608-1
[INFO] extracting crate spmc_ring 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate spmc_ring 0.1.0
[INFO] finished tweaking crates.io crate spmc_ring 0.1.0
[INFO] tweaked toml for crates.io crate spmc_ring 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate spmc_ring 0.1.0 on toolchain 8c32e313cccf7df531e2d49ffb8227bb92304aee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 6 packages to latest compatible versions
[INFO] [stderr]       Adding generic-array v0.14.7 (available: v1.2.0)
[INFO] [stderr]       Adding nb v0.1.3 (available: v1.1.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ad8e5cc6ddfc005007f051e55fe397fdf5c5857a91d2e0e0d75412d566af0ea1
[INFO] running `Command { std: "docker" "start" "-a" "ad8e5cc6ddfc005007f051e55fe397fdf5c5857a91d2e0e0d75412d566af0ea1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad8e5cc6ddfc005007f051e55fe397fdf5c5857a91d2e0e0d75412d566af0ea1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad8e5cc6ddfc005007f051e55fe397fdf5c5857a91d2e0e0d75412d566af0ea1", kill_on_drop: false }`
[INFO] [stdout] ad8e5cc6ddfc005007f051e55fe397fdf5c5857a91d2e0e0d75412d566af0ea1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0a54d82a472887444d8dc0cf070dddf51832866e6efc9365a6881a0554fbde7b
[INFO] running `Command { std: "docker" "start" "-a" "0a54d82a472887444d8dc0cf070dddf51832866e6efc9365a6881a0554fbde7b", kill_on_drop: false }`
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking nb v1.1.0
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking spmc_ring v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `y` is never read
[INFO] [stdout]    --> src/lib.rs:222:9
[INFO] [stdout]     |
[INFO] [stdout] 220 |     struct Simple {
[INFO] [stdout]     |            ------ field in this struct
[INFO] [stdout] 221 |         x: u32,
[INFO] [stdout] 222 |         y: u32,
[INFO] [stdout]     |         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Simple` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `Command { std: "docker" "inspect" "0a54d82a472887444d8dc0cf070dddf51832866e6efc9365a6881a0554fbde7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a54d82a472887444d8dc0cf070dddf51832866e6efc9365a6881a0554fbde7b", kill_on_drop: false }`
[INFO] [stdout] 0a54d82a472887444d8dc0cf070dddf51832866e6efc9365a6881a0554fbde7b