[INFO] fetching crate stupid_utils 0.2.4...
[INFO] checking stupid_utils-0.2.4 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate stupid_utils 0.2.4 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate stupid_utils 0.2.4 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 stupid_utils 0.2.4
[INFO] finished tweaking crates.io crate stupid_utils 0.2.4
[INFO] tweaked toml for crates.io crate stupid_utils 0.2.4 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate stupid_utils 0.2.4 already has a lockfile, it will not be regenerated
[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] 934e8fa4fc74257995482e58ed3132303011858e4fdaa1e874946ba77b5aaf87
[INFO] running `Command { std: "docker" "start" "-a" "934e8fa4fc74257995482e58ed3132303011858e4fdaa1e874946ba77b5aaf87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "934e8fa4fc74257995482e58ed3132303011858e4fdaa1e874946ba77b5aaf87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "934e8fa4fc74257995482e58ed3132303011858e4fdaa1e874946ba77b5aaf87", kill_on_drop: false }`
[INFO] [stdout] 934e8fa4fc74257995482e58ed3132303011858e4fdaa1e874946ba77b5aaf87
[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] c805e22dac40f8a192346119e33d7d4d9ba78d4fa427a72bfd5285319d4440a7
[INFO] running `Command { std: "docker" "start" "-a" "c805e22dac40f8a192346119e33d7d4d9ba78d4fa427a72bfd5285319d4440a7", kill_on_drop: false }`
[INFO] [stderr]     Checking stupid_utils v0.2.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]     --> src/lib.rs:1142:17
[INFO] [stdout]      |
[INFO] [stdout] 1142 |                 _ => {
[INFO] [stdout]      |                 ^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]     --> src/lib.rs:1142:17
[INFO] [stdout]      |
[INFO] [stdout] 1142 |                 _ => {
[INFO] [stdout]      |                 ^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.28s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c805e22dac40f8a192346119e33d7d4d9ba78d4fa427a72bfd5285319d4440a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c805e22dac40f8a192346119e33d7d4d9ba78d4fa427a72bfd5285319d4440a7", kill_on_drop: false }`
[INFO] [stdout] c805e22dac40f8a192346119e33d7d4d9ba78d4fa427a72bfd5285319d4440a7