[INFO] fetching crate jtd-derive 0.1.3... [INFO] checking jtd-derive-0.1.3 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never [INFO] extracting crate jtd-derive 0.1.3 into /workspace/builds/worker-6-tc1/source [INFO] validating manifest of crates.io crate jtd-derive 0.1.3 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate jtd-derive 0.1.3 [INFO] finished tweaking crates.io crate jtd-derive 0.1.3 [INFO] tweaked toml for crates.io crate jtd-derive 0.1.3 written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 38 packages [INFO] [stderr] Adding itertools v0.10.5 (latest: v0.12.1) [INFO] [stderr] Adding jtd-derive-macros v0.1.3 (latest: v0.1.4) [INFO] [stderr] Adding serde_derive_internals v0.26.0 (latest: v0.29.0) [INFO] [stderr] Adding syn v1.0.109 (latest: v2.0.58) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded jtd-derive-macros v0.1.3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 236d6cf0c658c30a4d15dfef0b4afb7976aafd95b68a59dc845b15f26975c4b4 [INFO] running `Command { std: "docker" "start" "-a" "236d6cf0c658c30a4d15dfef0b4afb7976aafd95b68a59dc845b15f26975c4b4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "236d6cf0c658c30a4d15dfef0b4afb7976aafd95b68a59dc845b15f26975c4b4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "236d6cf0c658c30a4d15dfef0b4afb7976aafd95b68a59dc845b15f26975c4b4", kill_on_drop: false }` [INFO] [stdout] 236d6cf0c658c30a4d15dfef0b4afb7976aafd95b68a59dc845b15f26975c4b4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 843c80d348704b1b08db3cdaf8d726c79ee240885b0fa21b7d0598f03bbf98a6 [INFO] running `Command { std: "docker" "start" "-a" "843c80d348704b1b08db3cdaf8d726c79ee240885b0fa21b7d0598f03bbf98a6", kill_on_drop: false }` [INFO] [stderr] Compiling serde v1.0.197 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Checking hashbrown v0.14.3 [INFO] [stderr] Checking equivalent v1.0.1 [INFO] [stderr] Compiling either v1.10.0 [INFO] [stderr] Checking winnow v0.6.5 [INFO] [stderr] Compiling trybuild v1.0.91 [INFO] [stderr] Checking glob v0.3.1 [INFO] [stderr] Checking termcolor v1.4.1 [INFO] [stderr] Compiling syn v2.0.58 [INFO] [stderr] Compiling proc-macro-error-attr v1.0.4 [INFO] [stderr] Compiling itertools v0.10.5 [INFO] [stderr] Checking indexmap v2.2.6 [INFO] [stderr] Compiling serde_derive v1.0.197 [INFO] [stderr] Compiling thiserror-impl v1.0.58 [INFO] [stderr] Checking thiserror v1.0.58 [INFO] [stderr] Compiling serde_derive_internals v0.26.0 [INFO] [stderr] Compiling proc-macro-error v1.0.4 [INFO] [stderr] Compiling derivative v2.2.0 [INFO] [stderr] Compiling jtd-derive-macros v0.1.3 [INFO] [stderr] Checking toml_datetime v0.6.5 [INFO] [stderr] Checking serde_spanned v0.6.5 [INFO] [stderr] Checking serde_json v1.0.115 [INFO] [stderr] Checking toml_edit v0.22.9 [INFO] [stderr] Checking jtd-derive v0.1.3 (/opt/rustwide/workdir) [INFO] [stderr] Checking toml v0.8.12 [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.28s [INFO] running `Command { std: "docker" "inspect" "843c80d348704b1b08db3cdaf8d726c79ee240885b0fa21b7d0598f03bbf98a6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "843c80d348704b1b08db3cdaf8d726c79ee240885b0fa21b7d0598f03bbf98a6", kill_on_drop: false }` [INFO] [stdout] 843c80d348704b1b08db3cdaf8d726c79ee240885b0fa21b7d0598f03bbf98a6 [INFO] checking jtd-derive-0.1.3 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never [INFO] extracting crate jtd-derive 0.1.3 into /workspace/builds/worker-6-tc2/source [INFO] validating manifest of crates.io crate jtd-derive 0.1.3 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate jtd-derive 0.1.3 [INFO] finished tweaking crates.io crate jtd-derive 0.1.3 [INFO] tweaked toml for crates.io crate jtd-derive 0.1.3 written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Locking 38 packages [INFO] [stderr] Adding itertools v0.10.5 (latest: v0.12.1) [INFO] [stderr] Adding jtd-derive-macros v0.1.3 (latest: v0.1.4) [INFO] [stderr] Adding serde_derive_internals v0.26.0 (latest: v0.29.0) [INFO] [stderr] Adding syn v1.0.109 (latest: v2.0.58) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 6422933614eced8bb42db169c9324872b7fe97378e7b6a64a44a4f62fa5ab9e5 [INFO] running `Command { std: "docker" "start" "-a" "6422933614eced8bb42db169c9324872b7fe97378e7b6a64a44a4f62fa5ab9e5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6422933614eced8bb42db169c9324872b7fe97378e7b6a64a44a4f62fa5ab9e5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6422933614eced8bb42db169c9324872b7fe97378e7b6a64a44a4f62fa5ab9e5", kill_on_drop: false }` [INFO] [stdout] 6422933614eced8bb42db169c9324872b7fe97378e7b6a64a44a4f62fa5ab9e5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 7f6ca13f16a682fef21061639e8dbda6e43bf8667cb6a7c403802c2d30d86a2e [INFO] running `Command { std: "docker" "start" "-a" "7f6ca13f16a682fef21061639e8dbda6e43bf8667cb6a7c403802c2d30d86a2e", kill_on_drop: false }` [INFO] [stderr] Compiling serde v1.0.197 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Checking hashbrown v0.14.3 [INFO] [stderr] Checking equivalent v1.0.1 [INFO] [stderr] Checking winnow v0.6.5 [INFO] [stderr] Compiling either v1.10.0 [INFO] [stderr] Compiling trybuild v1.0.91 [INFO] [stderr] Checking glob v0.3.1 [INFO] [stderr] Checking termcolor v1.4.1 [INFO] [stderr] Compiling syn v2.0.58 [INFO] [stderr] Compiling proc-macro-error-attr v1.0.4 [INFO] [stderr] Compiling itertools v0.10.5 [INFO] [stderr] Checking indexmap v2.2.6 [INFO] [stderr] Compiling serde_derive v1.0.197 [INFO] [stderr] Compiling thiserror-impl v1.0.58 [INFO] [stderr] Checking thiserror v1.0.58 [INFO] [stderr] Compiling proc-macro-error v1.0.4 [INFO] [stderr] Compiling serde_derive_internals v0.26.0 [INFO] [stderr] Compiling derivative v2.2.0 [INFO] [stderr] Compiling jtd-derive-macros v0.1.3 [INFO] [stdout] error[E0277]: the trait bound `!: std::default::Default` is not satisfied [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/jtd-derive-macros-0.1.3/src/derive/context/container.rs:204:14 [INFO] [stdout] | [INFO] [stdout] 204 | .collect_fallible()?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ the trait `std::default::Default` is not implemented for `!` [INFO] [stdout] | [INFO] [stdout] = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #48950 for more information) [INFO] [stdout] = help: did you intend to use the type `()` here instead? [INFO] [stdout] note: required by a bound in `IterExt::collect_fallible` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/jtd-derive-macros-0.1.3/src/iter_ext.rs:6:12 [INFO] [stdout] | [INFO] [stdout] 4 | fn collect_fallible(self) -> Result [INFO] [stdout] | ---------------- required by a bound in this associated function [INFO] [stdout] 5 | where [INFO] [stdout] 6 | B: Default + Extend; [INFO] [stdout] | ^^^^^^^ required by this bound in `IterExt::collect_fallible` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the trait bound `!: Extend<()>` is not satisfied [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/jtd-derive-macros-0.1.3/src/derive/context/container.rs:204:14 [INFO] [stdout] | [INFO] [stdout] 204 | .collect_fallible()?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ the trait `Extend<()>` is not implemented for `!` [INFO] [stdout] | [INFO] [stdout] = help: the following other types implement trait `Extend`: [INFO] [stdout] <() as Extend<()>> [INFO] [stdout] <(ExtendA, ExtendB) as Extend<(A, B)>> [INFO] [stdout] as Extend<(&'a K, &'a V)>> [INFO] [stdout] as Extend<(K, V)>> [INFO] [stdout] as Extend<&'a T>> [INFO] [stdout] as Extend> [INFO] [stdout] as Extend<&'a T>> [INFO] [stdout] as Extend> [INFO] [stdout] and 34 others [INFO] [stdout] = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #48950 for more information) [INFO] [stdout] = help: did you intend to use the type `()` here instead? [INFO] [stdout] note: required by a bound in `IterExt::collect_fallible` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/jtd-derive-macros-0.1.3/src/iter_ext.rs:6:22 [INFO] [stdout] | [INFO] [stdout] 4 | fn collect_fallible(self) -> Result [INFO] [stdout] | ---------------- required by a bound in this associated function [INFO] [stdout] 5 | where [INFO] [stdout] 6 | B: Default + Extend; [INFO] [stdout] | ^^^^^^^^^ required by this bound in `IterExt::collect_fallible` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the trait bound `!: std::default::Default` is not satisfied [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/jtd-derive-macros-0.1.3/src/derive/context/field.rs:78:14 [INFO] [stdout] | [INFO] [stdout] 78 | .collect_fallible()?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ the trait `std::default::Default` is not implemented for `!` [INFO] [stdout] | [INFO] [stdout] = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #48950 for more information) [INFO] [stdout] = help: did you intend to use the type `()` here instead? [INFO] [stdout] note: required by a bound in `IterExt::collect_fallible` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/jtd-derive-macros-0.1.3/src/iter_ext.rs:6:12 [INFO] [stdout] | [INFO] [stdout] 4 | fn collect_fallible(self) -> Result [INFO] [stdout] | ---------------- required by a bound in this associated function [INFO] [stdout] 5 | where [INFO] [stdout] 6 | B: Default + Extend; [INFO] [stdout] | ^^^^^^^ required by this bound in `IterExt::collect_fallible` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the trait bound `!: Extend<()>` is not satisfied [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/jtd-derive-macros-0.1.3/src/derive/context/field.rs:78:14 [INFO] [stdout] | [INFO] [stdout] 78 | .collect_fallible()?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ the trait `Extend<()>` is not implemented for `!` [INFO] [stdout] | [INFO] [stdout] = help: the following other types implement trait `Extend`: [INFO] [stdout] <() as Extend<()>> [INFO] [stdout] <(ExtendA, ExtendB) as Extend<(A, B)>> [INFO] [stdout] as Extend<(&'a K, &'a V)>> [INFO] [stdout] as Extend<(K, V)>> [INFO] [stdout] as Extend<&'a T>> [INFO] [stdout] as Extend> [INFO] [stdout] as Extend<&'a T>> [INFO] [stdout] as Extend> [INFO] [stdout] and 34 others [INFO] [stdout] = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #48950 for more information) [INFO] [stdout] = help: did you intend to use the type `()` here instead? [INFO] [stdout] note: required by a bound in `IterExt::collect_fallible` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/jtd-derive-macros-0.1.3/src/iter_ext.rs:6:22 [INFO] [stdout] | [INFO] [stdout] 4 | fn collect_fallible(self) -> Result [INFO] [stdout] | ---------------- required by a bound in this associated function [INFO] [stdout] 5 | where [INFO] [stdout] 6 | B: Default + Extend; [INFO] [stdout] | ^^^^^^^^^ required by this bound in `IterExt::collect_fallible` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 4 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0277`. [INFO] [stdout] [INFO] [stderr] error: could not compile `jtd-derive-macros` (lib) due to 5 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "7f6ca13f16a682fef21061639e8dbda6e43bf8667cb6a7c403802c2d30d86a2e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7f6ca13f16a682fef21061639e8dbda6e43bf8667cb6a7c403802c2d30d86a2e", kill_on_drop: false }` [INFO] [stdout] 7f6ca13f16a682fef21061639e8dbda6e43bf8667cb6a7c403802c2d30d86a2e