[INFO] fetching crate conquer-once 0.4.0... [INFO] checking conquer-once-0.4.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] extracting crate conquer-once 0.4.0 into /workspace/builds/worker-2-tc1/source [INFO] validating manifest of crates.io crate conquer-once 0.4.0 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 conquer-once 0.4.0 [INFO] finished tweaking crates.io crate conquer-once 0.4.0 [INFO] tweaked toml for crates.io crate conquer-once 0.4.0 written to /workspace/builds/worker-2-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 2 packages [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] [stderr] Downloading crates ... [INFO] [stderr] Downloaded conquer-util v0.3.0 [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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 57947db4f85a83fb09364e4261a3e41f7dcbdb67f0808c7fab1fcce29ce067a2 [INFO] running `Command { std: "docker" "start" "-a" "57947db4f85a83fb09364e4261a3e41f7dcbdb67f0808c7fab1fcce29ce067a2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "57947db4f85a83fb09364e4261a3e41f7dcbdb67f0808c7fab1fcce29ce067a2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "57947db4f85a83fb09364e4261a3e41f7dcbdb67f0808c7fab1fcce29ce067a2", kill_on_drop: false }` [INFO] [stdout] 57947db4f85a83fb09364e4261a3e41f7dcbdb67f0808c7fab1fcce29ce067a2 [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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 5967b8a91acd3b6cd94a7441ffd4d06ca13535ebad0ee9f9d030c4ee7fb5655f [INFO] running `Command { std: "docker" "start" "-a" "5967b8a91acd3b6cd94a7441ffd4d06ca13535ebad0ee9f9d030c4ee7fb5655f", kill_on_drop: false }` [INFO] [stderr] Checking conquer-util v0.3.0 [INFO] [stderr] Checking conquer-once v0.4.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `AsRef` is imported redundantly [INFO] [stdout] --> src/lazy.rs:3:28 [INFO] [stdout] | [INFO] [stdout] 3 | use core::{borrow::Borrow, convert::AsRef, fmt, mem::ManuallyDrop, ops::Deref, ptr}; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `AsRef` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `AsRef` is imported redundantly [INFO] [stdout] --> src/lazy.rs:3:28 [INFO] [stdout] | [INFO] [stdout] 3 | use core::{borrow::Borrow, convert::AsRef, fmt, mem::ManuallyDrop, ops::Deref, ptr}; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `AsRef` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/state.rs:172:16 [INFO] [stdout] | [INFO] [stdout] 172 | WouldBlock(BlockedState), [INFO] [stdout] | ---------- ^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 172 | WouldBlock(()), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/state.rs:172:16 [INFO] [stdout] | [INFO] [stdout] 172 | WouldBlock(BlockedState), [INFO] [stdout] | ---------- ^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 172 | WouldBlock(()), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.28s [INFO] running `Command { std: "docker" "inspect" "5967b8a91acd3b6cd94a7441ffd4d06ca13535ebad0ee9f9d030c4ee7fb5655f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5967b8a91acd3b6cd94a7441ffd4d06ca13535ebad0ee9f9d030c4ee7fb5655f", kill_on_drop: false }` [INFO] [stdout] 5967b8a91acd3b6cd94a7441ffd4d06ca13535ebad0ee9f9d030c4ee7fb5655f [INFO] checking conquer-once-0.4.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback [INFO] extracting crate conquer-once 0.4.0 into /workspace/builds/worker-2-tc2/source [INFO] validating manifest of crates.io crate conquer-once 0.4.0 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 conquer-once 0.4.0 [INFO] finished tweaking crates.io crate conquer-once 0.4.0 [INFO] tweaked toml for crates.io crate conquer-once 0.4.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 6ac4f46921e071913a75e59dda736e0e474307483fd58d27b1d38b1e18ec48c7 [INFO] running `Command { std: "docker" "start" "-a" "6ac4f46921e071913a75e59dda736e0e474307483fd58d27b1d38b1e18ec48c7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6ac4f46921e071913a75e59dda736e0e474307483fd58d27b1d38b1e18ec48c7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6ac4f46921e071913a75e59dda736e0e474307483fd58d27b1d38b1e18ec48c7", kill_on_drop: false }` [INFO] [stdout] 6ac4f46921e071913a75e59dda736e0e474307483fd58d27b1d38b1e18ec48c7 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] ff706a8c2c9b2f85a38f189ec71c90158a854f7063f7f73e4538d03fa52fe534 [INFO] running `Command { std: "docker" "start" "-a" "ff706a8c2c9b2f85a38f189ec71c90158a854f7063f7f73e4538d03fa52fe534", kill_on_drop: false }` [INFO] [stderr] Checking conquer-util v0.3.0 [INFO] [stderr] Checking conquer-once v0.4.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `AsRef` is imported redundantly [INFO] [stdout] --> src/lazy.rs:3:28 [INFO] [stdout] | [INFO] [stdout] 3 | use core::{borrow::Borrow, convert::AsRef, fmt, mem::ManuallyDrop, ops::Deref, ptr}; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `AsRef` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `AsRef` is imported redundantly [INFO] [stdout] --> src/lazy.rs:3:28 [INFO] [stdout] | [INFO] [stdout] 3 | use core::{borrow::Borrow, convert::AsRef, fmt, mem::ManuallyDrop, ops::Deref, ptr}; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `AsRef` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/state.rs:172:16 [INFO] [stdout] | [INFO] [stdout] 172 | WouldBlock(BlockedState), [INFO] [stdout] | ---------- ^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 172 | WouldBlock(()), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> src/tests.rs:176:24 [INFO] [stdout] | [INFO] [stdout] 176 | let cell = OnceCell::uninit(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ cannot infer type [INFO] [stdout] | [INFO] [stdout] ::: src/spin.rs:71:5 [INFO] [stdout] | [INFO] [stdout] 71 | generate_tests!(); [INFO] [stdout] | ----------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `generate_tests` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0283]: type annotations needed [INFO] [stdout] --> src/tests.rs:222:46 [INFO] [stdout] | [INFO] [stdout] 222 | let cell = Arc::try_unwrap(cell).unwrap(); [INFO] [stdout] | ^^^^^^ cannot infer type [INFO] [stdout] | [INFO] [stdout] ::: src/spin.rs:71:5 [INFO] [stdout] | [INFO] [stdout] 71 | generate_tests!(); [INFO] [stdout] | ----------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: cannot satisfy `_: Debug` [INFO] [stdout] note: required for `cell::OnceCell<_, Spin>` to implement `Debug` [INFO] [stdout] --> src/cell.rs:494:24 [INFO] [stdout] | [INFO] [stdout] 494 | impl fmt::Debug for OnceCell { [INFO] [stdout] | ---------- ^^^^^^^^^^ ^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | unsatisfied trait bound introduced here [INFO] [stdout] = note: 1 redundant requirement hidden [INFO] [stdout] = note: required for `Arc>` to implement `Debug` [INFO] [stdout] note: required by a bound in `Result::::unwrap` [INFO] [stdout] --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/core/src/result.rs:1071:5 [INFO] [stdout] = note: this error originates in the macro `generate_tests` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> src/tests.rs:176:24 [INFO] [stdout] | [INFO] [stdout] 176 | let cell = OnceCell::uninit(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ cannot infer type [INFO] [stdout] | [INFO] [stdout] ::: src/park.rs:304:5 [INFO] [stdout] | [INFO] [stdout] 304 | generate_tests!(); [INFO] [stdout] | ----------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `generate_tests` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0283]: type annotations needed [INFO] [stdout] --> src/tests.rs:222:46 [INFO] [stdout] | [INFO] [stdout] 222 | let cell = Arc::try_unwrap(cell).unwrap(); [INFO] [stdout] | ^^^^^^ cannot infer type [INFO] [stdout] | [INFO] [stdout] ::: src/park.rs:304:5 [INFO] [stdout] | [INFO] [stdout] 304 | generate_tests!(); [INFO] [stdout] | ----------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: cannot satisfy `_: Debug` [INFO] [stdout] note: required for `cell::OnceCell<_, ParkThread>` to implement `Debug` [INFO] [stdout] --> src/cell.rs:494:24 [INFO] [stdout] | [INFO] [stdout] 494 | impl fmt::Debug for OnceCell { [INFO] [stdout] | ---------- ^^^^^^^^^^ ^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | unsatisfied trait bound introduced here [INFO] [stdout] = note: 1 redundant requirement hidden [INFO] [stdout] = note: required for `Arc>` to implement `Debug` [INFO] [stdout] note: required by a bound in `Result::::unwrap` [INFO] [stdout] --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/core/src/result.rs:1071:5 [INFO] [stdout] = note: this error originates in the macro `generate_tests` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 4 previous errors; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0282, E0283. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0282`. [INFO] [stdout] [INFO] [stderr] error: could not compile `conquer-once` (lib test) due to 5 previous errors; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "ff706a8c2c9b2f85a38f189ec71c90158a854f7063f7f73e4538d03fa52fe534", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ff706a8c2c9b2f85a38f189ec71c90158a854f7063f7f73e4538d03fa52fe534", kill_on_drop: false }` [INFO] [stdout] ff706a8c2c9b2f85a38f189ec71c90158a854f7063f7f73e4538d03fa52fe534