[INFO] fetching crate usbd_mass_storage 0.1.0...
[INFO] checking usbd_mass_storage-0.1.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate usbd_mass_storage 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate usbd_mass_storage 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 usbd_mass_storage 0.1.0
[INFO] finished tweaking crates.io crate usbd_mass_storage 0.1.0
[INFO] tweaked toml for crates.io crate usbd_mass_storage 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 14 packages
[INFO] [stderr]       Adding embedded-hal v0.2.7 (latest: v1.0.0)
[INFO] [stderr]       Adding nb v0.1.3 (latest: v1.1.0)
[INFO] [stderr]       Adding packing v0.1.0 (latest: v0.2.0)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding usb-device v0.2.9 (latest: v0.3.2)
[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 packing_codegen v0.1.0
[INFO] [stderr]   Downloaded packing v0.1.0
[INFO] [stderr]   Downloaded itm_logger v0.1.2
[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] 9bb0bbc91b740e13b695b1c88c4eedb8700e28a76e5193dbe5aa44db3b6cc616
[INFO] running `Command { std: "docker" "start" "-a" "9bb0bbc91b740e13b695b1c88c4eedb8700e28a76e5193dbe5aa44db3b6cc616", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9bb0bbc91b740e13b695b1c88c4eedb8700e28a76e5193dbe5aa44db3b6cc616", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bb0bbc91b740e13b695b1c88c4eedb8700e28a76e5193dbe5aa44db3b6cc616", kill_on_drop: false }`
[INFO] [stdout] 9bb0bbc91b740e13b695b1c88c4eedb8700e28a76e5193dbe5aa44db3b6cc616
[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] 2d45b30f878c5e335ef0f2564d923acfbb7d97ad4b2ce38339078af9e4807172
[INFO] running `Command { std: "docker" "start" "-a" "2d45b30f878c5e335ef0f2564d923acfbb7d97ad4b2ce38339078af9e4807172", kill_on_drop: false }`
[INFO] [stderr]     Checking nb v1.1.0
[INFO] [stderr]     Checking usb-device v0.2.9
[INFO] [stderr]     Checking itm_logger v0.1.2
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]    Compiling packing_codegen v0.1.0
[INFO] [stderr]     Checking packing v0.1.0
[INFO] [stderr]     Checking usbd_mass_storage v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `itm_logger::*`
[INFO] [stdout]   --> src/lib.rs:27:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub use itm_logger::*;
[INFO] [stdout]    |             ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `itm_logger::*`
[INFO] [stdout]   --> src/lib.rs:27:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub use itm_logger::*;
[INFO] [stdout]    |             ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` 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 2.02s
[INFO] running `Command { std: "docker" "inspect" "2d45b30f878c5e335ef0f2564d923acfbb7d97ad4b2ce38339078af9e4807172", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d45b30f878c5e335ef0f2564d923acfbb7d97ad4b2ce38339078af9e4807172", kill_on_drop: false }`
[INFO] [stdout] 2d45b30f878c5e335ef0f2564d923acfbb7d97ad4b2ce38339078af9e4807172
[INFO] checking usbd_mass_storage-0.1.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate usbd_mass_storage 0.1.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate usbd_mass_storage 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 usbd_mass_storage 0.1.0
[INFO] finished tweaking crates.io crate usbd_mass_storage 0.1.0
[INFO] tweaked toml for crates.io crate usbd_mass_storage 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] d2e34f60d246d09ad171add719d705c174458e73dae0c18a96fbe70673db6c8d
[INFO] running `Command { std: "docker" "start" "-a" "d2e34f60d246d09ad171add719d705c174458e73dae0c18a96fbe70673db6c8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d2e34f60d246d09ad171add719d705c174458e73dae0c18a96fbe70673db6c8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2e34f60d246d09ad171add719d705c174458e73dae0c18a96fbe70673db6c8d", kill_on_drop: false }`
[INFO] [stdout] d2e34f60d246d09ad171add719d705c174458e73dae0c18a96fbe70673db6c8d
[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] 5ae2ab283f1d3f13ccd1ea5b718f228dfd9aaaadb1a5f93d4b3af03af3f9eeaa
[INFO] running `Command { std: "docker" "start" "-a" "5ae2ab283f1d3f13ccd1ea5b718f228dfd9aaaadb1a5f93d4b3af03af3f9eeaa", kill_on_drop: false }`
[INFO] [stderr]     Checking nb v1.1.0
[INFO] [stderr]     Checking usb-device v0.2.9
[INFO] [stderr]     Checking itm_logger v0.1.2
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]    Compiling packing_codegen v0.1.0
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/packing_codegen-0.1.0/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]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/packing_codegen-0.1.0/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]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/packing_codegen-0.1.0/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] [stderr] error: could not compile `packing_codegen` (lib) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "5ae2ab283f1d3f13ccd1ea5b718f228dfd9aaaadb1a5f93d4b3af03af3f9eeaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ae2ab283f1d3f13ccd1ea5b718f228dfd9aaaadb1a5f93d4b3af03af3f9eeaa", kill_on_drop: false }`
[INFO] [stdout] 5ae2ab283f1d3f13ccd1ea5b718f228dfd9aaaadb1a5f93d4b3af03af3f9eeaa