[INFO] fetching crate packing_codegen 0.1.0...
[INFO] checking packing_codegen-0.1.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate packing_codegen 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate packing_codegen 0.1.0 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 packing_codegen 0.1.0
[INFO] finished tweaking crates.io crate packing_codegen 0.1.0
[INFO] tweaked toml for crates.io crate packing_codegen 0.1.0 written to /workspace/builds/worker-5-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 5 packages
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 3a767921cb1f3539a584858b46d18c95302732e8fd1922f9e59705710e6b18eb
[INFO] running `Command { std: "docker" "start" "-a" "3a767921cb1f3539a584858b46d18c95302732e8fd1922f9e59705710e6b18eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3a767921cb1f3539a584858b46d18c95302732e8fd1922f9e59705710e6b18eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a767921cb1f3539a584858b46d18c95302732e8fd1922f9e59705710e6b18eb", kill_on_drop: false }`
[INFO] [stdout] 3a767921cb1f3539a584858b46d18c95302732e8fd1922f9e59705710e6b18eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 04954ac5c607f1d6c4b2f4a1653aa42939217065ec49bb9cee6d1ac81dcf4218
[INFO] running `Command { std: "docker" "start" "-a" "04954ac5c607f1d6c4b2f4a1653aa42939217065ec49bb9cee6d1ac81dcf4218", kill_on_drop: false }`
[INFO] [stderr]     Checking syn v1.0.109
[INFO] [stderr]     Checking packing_codegen v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]    --> src/lib.rs:117:11
[INFO] [stdout]     |
[INFO] [stdout] 117 |     Lit { value: Lit, span: Span },
[INFO] [stdout]     |     ---   ^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]    --> src/lib.rs:117:11
[INFO] [stdout]     |
[INFO] [stdout] 117 |     Lit { value: Lit, span: Span },
[INFO] [stdout]     |     ---   ^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `Command { std: "docker" "inspect" "04954ac5c607f1d6c4b2f4a1653aa42939217065ec49bb9cee6d1ac81dcf4218", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04954ac5c607f1d6c4b2f4a1653aa42939217065ec49bb9cee6d1ac81dcf4218", kill_on_drop: false }`
[INFO] [stdout] 04954ac5c607f1d6c4b2f4a1653aa42939217065ec49bb9cee6d1ac81dcf4218
[INFO] checking packing_codegen-0.1.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate packing_codegen 0.1.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate packing_codegen 0.1.0 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 packing_codegen 0.1.0
[INFO] finished tweaking crates.io crate packing_codegen 0.1.0
[INFO] tweaked toml for crates.io crate packing_codegen 0.1.0 written to /workspace/builds/worker-5-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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 8c2281f2f925343e20a1bd6beac328e33c666a5415ffcbe0083275967b69fc83
[INFO] running `Command { std: "docker" "start" "-a" "8c2281f2f925343e20a1bd6beac328e33c666a5415ffcbe0083275967b69fc83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8c2281f2f925343e20a1bd6beac328e33c666a5415ffcbe0083275967b69fc83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c2281f2f925343e20a1bd6beac328e33c666a5415ffcbe0083275967b69fc83", kill_on_drop: false }`
[INFO] [stdout] 8c2281f2f925343e20a1bd6beac328e33c666a5415ffcbe0083275967b69fc83
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] b47bc39981f7c58d9415da451ddfd1fc2f92901cc56c1cf081842cf111cc7dd3
[INFO] running `Command { std: "docker" "start" "-a" "b47bc39981f7c58d9415da451ddfd1fc2f92901cc56c1cf081842cf111cc7dd3", kill_on_drop: false }`
[INFO] [stderr]     Checking syn v1.0.109
[INFO] [stderr]     Checking packing_codegen v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/lib.rs:157:25
[INFO] [stdout]     |
[INFO] [stdout] 157 | ...   Err(Error::new(l.path.span(), "pkd abbreviated attribute expects exactly 4 values: #[pkd(<start_bit>, <end_bit>, <start_byte>, <end...
[INFO] [stdout]     |       ^^^ cannot infer type of the type parameter `T` declared on the enum `Result`
[INFO] [stdout]     |
[INFO] [stdout] help: consider specifying the generic arguments
[INFO] [stdout]     |
[INFO] [stdout] 157 |                         Err::<T, syn::Error>(Error::new(l.path.span(), "pkd abbreviated attribute expects exactly 4 values: #[pkd(<start_bit>, <end_bit>, <start_byte>, <end_byte>)]"))?;
[INFO] [stdout]     |                            +++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/lib.rs:157:25
[INFO] [stdout]     |
[INFO] [stdout] 157 | ...   Err(Error::new(l.path.span(), "pkd abbreviated attribute expects exactly 4 values: #[pkd(<start_bit>, <end_bit>, <start_byte>, <end...
[INFO] [stdout]     |       ^^^ cannot infer type of the type parameter `T` declared on the enum `Result`
[INFO] [stdout]     |
[INFO] [stdout] help: consider specifying the generic arguments
[INFO] [stdout]     |
[INFO] [stdout] 157 |                         Err::<T, syn::Error>(Error::new(l.path.span(), "pkd abbreviated attribute expects exactly 4 values: #[pkd(<start_bit>, <end_bit>, <start_byte>, <end_byte>)]"))?;
[INFO] [stdout]     |                            +++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/lib.rs:612:17
[INFO] [stdout]     |
[INFO] [stdout] 612 |                 Err(Error::new(field.end_bit.0.unwrap().1, 
[INFO] [stdout]     |                 ^^^ cannot infer type of the type parameter `T` declared on the enum `Result`
[INFO] [stdout]     |
[INFO] [stdout] help: consider specifying the generic arguments
[INFO] [stdout]     |
[INFO] [stdout] 612 |                 Err::<T, syn::Error>(Error::new(field.end_bit.0.unwrap().1, 
[INFO] [stdout]     |                    +++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/lib.rs:612:17
[INFO] [stdout]     |
[INFO] [stdout] 612 |                 Err(Error::new(field.end_bit.0.unwrap().1, 
[INFO] [stdout]     |                 ^^^ cannot infer type of the type parameter `T` declared on the enum `Result`
[INFO] [stdout]     |
[INFO] [stdout] help: consider specifying the generic arguments
[INFO] [stdout]     |
[INFO] [stdout] 612 |                 Err::<T, syn::Error>(Error::new(field.end_bit.0.unwrap().1, 
[INFO] [stdout]     |                    +++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/lib.rs:883:13
[INFO] [stdout]     |
[INFO] [stdout] 883 |             Err(Error::new(ident.span(), "Only unit variants supported by Packed derive"))?;
[INFO] [stdout]     |             ^^^ cannot infer type of the type parameter `T` declared on the enum `Result`
[INFO] [stdout]     |
[INFO] [stdout] help: consider specifying the generic arguments
[INFO] [stdout]     |
[INFO] [stdout] 883 |             Err::<T, syn::Error>(Error::new(ident.span(), "Only unit variants supported by Packed derive"))?;
[INFO] [stdout]     |                +++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/lib.rs:883:13
[INFO] [stdout]     |
[INFO] [stdout] 883 |             Err(Error::new(ident.span(), "Only unit variants supported by Packed derive"))?;
[INFO] [stdout]     |             ^^^ cannot infer type of the type parameter `T` declared on the enum `Result`
[INFO] [stdout]     |
[INFO] [stdout] help: consider specifying the generic arguments
[INFO] [stdout]     |
[INFO] [stdout] 883 |             Err::<T, syn::Error>(Error::new(ident.span(), "Only unit variants supported by Packed derive"))?;
[INFO] [stdout]     |                +++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `packing_codegen` (lib) due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `packing_codegen` (lib test) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "b47bc39981f7c58d9415da451ddfd1fc2f92901cc56c1cf081842cf111cc7dd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b47bc39981f7c58d9415da451ddfd1fc2f92901cc56c1cf081842cf111cc7dd3", kill_on_drop: false }`
[INFO] [stdout] b47bc39981f7c58d9415da451ddfd1fc2f92901cc56c1cf081842cf111cc7dd3