[INFO] fetching crate slog-async 2.8.0...
[INFO] checking slog-async-2.8.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate slog-async 2.8.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate slog-async 2.8.0 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate slog-async 2.8.0
[INFO] finished tweaking crates.io crate slog-async 2.8.0
[INFO] tweaked toml for crates.io crate slog-async 2.8.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 15 packages
[INFO] [stderr]       Adding erased-serde v0.3.31 (latest: v0.4.4)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d7c967561e93fccdce6c55027c8af6fe008663aab5f40c364160b44ed5a6aa0f
[INFO] running `Command { std: "docker" "start" "-a" "d7c967561e93fccdce6c55027c8af6fe008663aab5f40c364160b44ed5a6aa0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d7c967561e93fccdce6c55027c8af6fe008663aab5f40c364160b44ed5a6aa0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7c967561e93fccdce6c55027c8af6fe008663aab5f40c364160b44ed5a6aa0f", kill_on_drop: false }`
[INFO] [stdout] d7c967561e93fccdce6c55027c8af6fe008663aab5f40c364160b44ed5a6aa0f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ad500f2f1c0b5a5808eb26813f60f782c08a444bddd3746122e5efe4038ac10d
[INFO] running `Command { std: "docker" "start" "-a" "ad500f2f1c0b5a5808eb26813f60f782c08a444bddd3746122e5efe4038ac10d", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]    Compiling slog v2.7.0
[INFO] [stderr]    Compiling slog-async v2.8.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]     Checking thread_local v1.1.8
[INFO] [stderr]     Checking crossbeam-channel v0.5.12
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `Command { std: "docker" "inspect" "ad500f2f1c0b5a5808eb26813f60f782c08a444bddd3746122e5efe4038ac10d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad500f2f1c0b5a5808eb26813f60f782c08a444bddd3746122e5efe4038ac10d", kill_on_drop: false }`
[INFO] [stdout] ad500f2f1c0b5a5808eb26813f60f782c08a444bddd3746122e5efe4038ac10d