[INFO] fetching crate tomson 0.1.1... [INFO] checking tomson-0.1.1 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] extracting crate tomson 0.1.1 into /workspace/builds/worker-3-tc1/source [INFO] validating manifest of crates.io crate tomson 0.1.1 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 tomson 0.1.1 [INFO] finished tweaking crates.io crate tomson 0.1.1 [INFO] tweaked toml for crates.io crate tomson 0.1.1 written to /workspace/builds/worker-3-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 3 packages [INFO] [stderr] Adding toml v0.1.30 (latest: v0.8.12) [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-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 8ee25b978f7159e359ed11a7cd7d512c387e41788f3d3a837742d0d7914bf053 [INFO] running `Command { std: "docker" "start" "-a" "8ee25b978f7159e359ed11a7cd7d512c387e41788f3d3a837742d0d7914bf053", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "8ee25b978f7159e359ed11a7cd7d512c387e41788f3d3a837742d0d7914bf053", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8ee25b978f7159e359ed11a7cd7d512c387e41788f3d3a837742d0d7914bf053", kill_on_drop: false }` [INFO] [stdout] 8ee25b978f7159e359ed11a7cd7d512c387e41788f3d3a837742d0d7914bf053 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] cf3fd943a61b0a2da5be4fd1533858a6fda002edaf333ba87ba9e423d0402355 [INFO] running `Command { std: "docker" "start" "-a" "cf3fd943a61b0a2da5be4fd1533858a6fda002edaf333ba87ba9e423d0402355", kill_on_drop: false }` [INFO] [stderr] Checking toml v0.1.30 [INFO] [stderr] Checking tomson v0.1.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:56:26 [INFO] [stdout] | [INFO] [stdout] 56 | to_json_src_impl_read! { Read, Stdin } [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 56 | to_json_src_impl_read! { dyn Read, Stdin } [INFO] [stdout] | +++ [INFO] [stdout] help: alternatively use a blanket implementation to implement `JsonSrc` for all types that also implement `Read` [INFO] [stdout] | [INFO] [stdout] 46 ~ $(impl JsonSrc for $t { [INFO] [stdout] 47 | fn parse(&mut self) -> Result { [INFO] [stdout] ... [INFO] [stdout] 55 | [INFO] [stdout] 56 ~ to_json_src_impl_read! { T, Stdin } [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:68:26 [INFO] [stdout] | [INFO] [stdout] 68 | to_json_src_impl_json! { json::ToJson, json::Json } [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 68 | to_json_src_impl_json! { dyn json::ToJson, json::Json } [INFO] [stdout] | +++ [INFO] [stdout] help: alternatively use a blanket implementation to implement `JsonSrc` for all types that also implement `json::ToJson` [INFO] [stdout] | [INFO] [stdout] 60 ~ $(impl JsonSrc for $t { [INFO] [stdout] 61 | fn parse(&mut self) -> Result { [INFO] [stdout] ... [INFO] [stdout] 67 | [INFO] [stdout] 68 ~ to_json_src_impl_json! { T, json::Json } [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:56:26 [INFO] [stdout] | [INFO] [stdout] 56 | to_json_src_impl_read! { Read, Stdin } [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 56 | to_json_src_impl_read! { dyn Read, Stdin } [INFO] [stdout] | +++ [INFO] [stdout] help: alternatively use a blanket implementation to implement `JsonSrc` for all types that also implement `Read` [INFO] [stdout] | [INFO] [stdout] 46 ~ $(impl JsonSrc for $t { [INFO] [stdout] 47 | fn parse(&mut self) -> Result { [INFO] [stdout] ... [INFO] [stdout] 55 | [INFO] [stdout] 56 ~ to_json_src_impl_read! { T, Stdin } [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:68:26 [INFO] [stdout] | [INFO] [stdout] 68 | to_json_src_impl_json! { json::ToJson, json::Json } [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 68 | to_json_src_impl_json! { dyn json::ToJson, json::Json } [INFO] [stdout] | +++ [INFO] [stdout] help: alternatively use a blanket implementation to implement `JsonSrc` for all types that also implement `json::ToJson` [INFO] [stdout] | [INFO] [stdout] 60 ~ $(impl JsonSrc for $t { [INFO] [stdout] 61 | fn parse(&mut self) -> Result { [INFO] [stdout] ... [INFO] [stdout] 67 | [INFO] [stdout] 68 ~ to_json_src_impl_json! { T, json::Json } [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:132:26 [INFO] [stdout] | [INFO] [stdout] 132 | to_toml_src_impl_read! { Read, Stdin } [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 132 | to_toml_src_impl_read! { dyn Read, Stdin } [INFO] [stdout] | +++ [INFO] [stdout] help: alternatively use a blanket implementation to implement `TomlSrc` for all types that also implement `Read` [INFO] [stdout] | [INFO] [stdout] 118 ~ $(impl TomlSrc for $t { [INFO] [stdout] 119 | fn parse(&mut self) -> Result> { [INFO] [stdout] ... [INFO] [stdout] 131 | [INFO] [stdout] 132 ~ to_toml_src_impl_read! { T, Stdin } [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:132:26 [INFO] [stdout] | [INFO] [stdout] 132 | to_toml_src_impl_read! { Read, Stdin } [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 132 | to_toml_src_impl_read! { dyn Read, Stdin } [INFO] [stdout] | +++ [INFO] [stdout] help: alternatively use a blanket implementation to implement `TomlSrc` for all types that also implement `Read` [INFO] [stdout] | [INFO] [stdout] 118 ~ $(impl TomlSrc for $t { [INFO] [stdout] 119 | fn parse(&mut self) -> Result> { [INFO] [stdout] ... [INFO] [stdout] 131 | [INFO] [stdout] 132 ~ to_toml_src_impl_read! { T, Stdin } [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:147:28 [INFO] [stdout] | [INFO] [stdout] 147 | pub fn as_json(src: &mut TomlSrc) -> Result> { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 147 | pub fn as_json(src: &mut dyn TomlSrc) -> Result> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:147:28 [INFO] [stdout] | [INFO] [stdout] 147 | pub fn as_json(src: &mut TomlSrc) -> Result> { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 147 | pub fn as_json(src: &mut dyn TomlSrc) -> Result> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.27s [INFO] running `Command { std: "docker" "inspect" "cf3fd943a61b0a2da5be4fd1533858a6fda002edaf333ba87ba9e423d0402355", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cf3fd943a61b0a2da5be4fd1533858a6fda002edaf333ba87ba9e423d0402355", kill_on_drop: false }` [INFO] [stdout] cf3fd943a61b0a2da5be4fd1533858a6fda002edaf333ba87ba9e423d0402355 [INFO] checking tomson-0.1.1 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback [INFO] extracting crate tomson 0.1.1 into /workspace/builds/worker-3-tc2/source [INFO] validating manifest of crates.io crate tomson 0.1.1 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 tomson 0.1.1 [INFO] finished tweaking crates.io crate tomson 0.1.1 [INFO] tweaked toml for crates.io crate tomson 0.1.1 written to /workspace/builds/worker-3-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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 35059ff9e2a751809e63fb19fc923941d84ac9cdcf12cb0b22abbce78b3df3f5 [INFO] running `Command { std: "docker" "start" "-a" "35059ff9e2a751809e63fb19fc923941d84ac9cdcf12cb0b22abbce78b3df3f5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "35059ff9e2a751809e63fb19fc923941d84ac9cdcf12cb0b22abbce78b3df3f5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "35059ff9e2a751809e63fb19fc923941d84ac9cdcf12cb0b22abbce78b3df3f5", kill_on_drop: false }` [INFO] [stdout] 35059ff9e2a751809e63fb19fc923941d84ac9cdcf12cb0b22abbce78b3df3f5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 83a5435c98aa36a9224edb6260732b00f0bff6ed6ebcb05081a831f91955c94f [INFO] running `Command { std: "docker" "start" "-a" "83a5435c98aa36a9224edb6260732b00f0bff6ed6ebcb05081a831f91955c94f", kill_on_drop: false }` [INFO] [stderr] Checking rustc-serialize v0.3.25 [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/rustc-serialize-0.3.25/src/json.rs:1387:20 [INFO] [stdout] | [INFO] [stdout] 1387 | _ => { panic!(); } [INFO] [stdout] | ^^^^^^^^ cannot infer type [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `$crate::panic::panic_2015` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0282`. [INFO] [stdout] [INFO] [stderr] error: could not compile `rustc-serialize` (lib) due to 2 previous errors [INFO] running `Command { std: "docker" "inspect" "83a5435c98aa36a9224edb6260732b00f0bff6ed6ebcb05081a831f91955c94f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "83a5435c98aa36a9224edb6260732b00f0bff6ed6ebcb05081a831f91955c94f", kill_on_drop: false }` [INFO] [stdout] 83a5435c98aa36a9224edb6260732b00f0bff6ed6ebcb05081a831f91955c94f