[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 [INFO] checking stupid_utils-0.2.4 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback [INFO] extracting crate stupid_utils 0.2.4 into /workspace/builds/worker-7-tc2/source [INFO] validating manifest of crates.io crate stupid_utils 0.2.4 on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "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-tc2/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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 6f02a221323127c464db50c9849c43dec90c6d2fe371cfa35a24c6dcc69e3629 [INFO] running `Command { std: "docker" "start" "-a" "6f02a221323127c464db50c9849c43dec90c6d2fe371cfa35a24c6dcc69e3629", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6f02a221323127c464db50c9849c43dec90c6d2fe371cfa35a24c6dcc69e3629", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6f02a221323127c464db50c9849c43dec90c6d2fe371cfa35a24c6dcc69e3629", kill_on_drop: false }` [INFO] [stdout] 6f02a221323127c464db50c9849c43dec90c6d2fe371cfa35a24c6dcc69e3629 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 1caa990422379fbed57a6789b02e565051d17300adfab8e397c347a80cde3f11 [INFO] running `Command { std: "docker" "start" "-a" "1caa990422379fbed57a6789b02e565051d17300adfab8e397c347a80cde3f11", kill_on_drop: false }` [INFO] [stderr] Checking stupid_utils v0.2.4 (/opt/rustwide/workdir) [INFO] [stdout] error[E0283]: type annotations needed for `JoinHandle` [INFO] [stdout] --> src/lib.rs:716:13 [INFO] [stdout] | [INFO] [stdout] 716 | let a = thread::spawn(move || loop { [INFO] [stdout] | _____________^___- [INFO] [stdout] 717 | | let g1 = l1.lock().u(); [INFO] [stdout] 718 | | [INFO] [stdout] 719 | | let g2 = l2.lock().u(); [INFO] [stdout] ... | [INFO] [stdout] 724 | | drop(g2); [INFO] [stdout] 725 | | }); [INFO] [stdout] | |__________- type must be known at this point [INFO] [stdout] | [INFO] [stdout] = note: cannot satisfy `_: Send` [INFO] [stdout] note: required by a bound in `spawn` [INFO] [stdout] --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/std/src/thread/mod.rs:672:1 [INFO] [stdout] help: consider giving `a` an explicit type, where the type for type parameter `T` is specified [INFO] [stdout] | [INFO] [stdout] 716 | let a: JoinHandle = thread::spawn(move || loop { [INFO] [stdout] | +++++++++++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0283]: type annotations needed for `JoinHandle` [INFO] [stdout] --> src/lib.rs:716:13 [INFO] [stdout] | [INFO] [stdout] 716 | let a = thread::spawn(move || loop { [INFO] [stdout] | _____________^___- [INFO] [stdout] 717 | | let g1 = l1.lock().u(); [INFO] [stdout] 718 | | [INFO] [stdout] 719 | | let g2 = l2.lock().u(); [INFO] [stdout] ... | [INFO] [stdout] 724 | | drop(g2); [INFO] [stdout] 725 | | }); [INFO] [stdout] | |__________- type must be known at this point [INFO] [stdout] | [INFO] [stdout] = note: cannot satisfy `_: Send` [INFO] [stdout] note: required by a bound in `spawn` [INFO] [stdout] --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/std/src/thread/mod.rs:672:1 [INFO] [stdout] help: consider giving `a` an explicit type, where the type for type parameter `T` is specified [INFO] [stdout] | [INFO] [stdout] 716 | let a: JoinHandle = thread::spawn(move || loop { [INFO] [stdout] | +++++++++++++++ [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] [stdout] error: aborting due to 1 previous error; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0283`. [INFO] [stdout] [INFO] [stderr] error: could not compile `stupid_utils` (lib) due to 2 previous errors; 1 warning emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [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] error: aborting due to 1 previous error; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0283`. [INFO] [stdout] [INFO] [stderr] error: could not compile `stupid_utils` (lib test) due to 2 previous errors; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "1caa990422379fbed57a6789b02e565051d17300adfab8e397c347a80cde3f11", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1caa990422379fbed57a6789b02e565051d17300adfab8e397c347a80cde3f11", kill_on_drop: false }` [INFO] [stdout] 1caa990422379fbed57a6789b02e565051d17300adfab8e397c347a80cde3f11