[INFO] fetching crate groundhog-nrf52 0.5.0...
[INFO] checking groundhog-nrf52-0.5.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate groundhog-nrf52 0.5.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate groundhog-nrf52 0.5.0 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 groundhog-nrf52 0.5.0
[INFO] finished tweaking crates.io crate groundhog-nrf52 0.5.0
[INFO] tweaked toml for crates.io crate groundhog-nrf52 0.5.0 written to /workspace/builds/worker-0-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 55 packages
[INFO] [stderr]       Adding as-slice v0.1.5 (latest: v0.2.1)
[INFO] [stderr]       Adding bare-metal v0.2.5 (latest: v1.0.0)
[INFO] [stderr]       Adding bitfield v0.13.2 (latest: v0.14.0)
[INFO] [stderr]       Adding cortex-m-rtic v0.5.9 (latest: v1.1.4)
[INFO] [stderr]       Adding cortex-m-rtic-macros v0.5.3 (latest: v1.1.6)
[INFO] [stderr]       Adding critical-section v0.2.8 (latest: v1.1.2)
[INFO] [stderr]       Adding embedded-dma v0.1.2 (latest: v0.2.0)
[INFO] [stderr]       Adding embedded-hal v0.2.7 (latest: v1.0.0)
[INFO] [stderr]       Adding embedded-storage v0.2.0 (latest: v0.3.1)
[INFO] [stderr]       Adding generic-array v0.12.4 (latest: v1.0.0)
[INFO] [stderr]       Adding generic-array v0.13.3 (latest: v1.0.0)
[INFO] [stderr]       Adding generic-array v0.14.7 (latest: v1.0.0)
[INFO] [stderr]       Adding hash32 v0.1.1 (latest: v0.3.1)
[INFO] [stderr]       Adding hashbrown v0.12.3 (latest: v0.14.3)
[INFO] [stderr]       Adding heapless v0.6.1 (latest: v0.8.0)
[INFO] [stderr]       Adding indexmap v1.9.3 (latest: v2.2.6)
[INFO] [stderr]       Adding nb v0.1.3 (latest: v1.1.0)
[INFO] [stderr]       Adding nrf-hal-common v0.14.1 (latest: v0.16.1)
[INFO] [stderr]       Adding nrf-usbd v0.1.1 (latest: v0.2.0)
[INFO] [stderr]       Adding nrf52840-hal v0.14.1 (latest: v0.16.1)
[INFO] [stderr]       Adding nrf52840-pac v0.10.1 (latest: v0.12.2)
[INFO] [stderr]       Adding rtic-core v0.3.1 (latest: v1.0.0)
[INFO] [stderr]       Adding rtic-syntax v0.4.0 (latest: v1.0.3)
[INFO] [stderr]       Adding rustc_version v0.2.3 (latest: v0.4.0)
[INFO] [stderr]       Adding semver v0.9.0 (latest: v1.0.22)
[INFO] [stderr]       Adding semver-parser v0.7.0 (latest: v0.10.2)
[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 embedded-storage v0.2.0
[INFO] [stderr]   Downloaded nrf52840-hal v0.14.1
[INFO] [stderr]   Downloaded groundhog v0.2.5
[INFO] [stderr]   Downloaded critical-section v0.2.8
[INFO] [stderr]   Downloaded bare-metal v1.0.0
[INFO] [stderr]   Downloaded rtic-core v0.3.1
[INFO] [stderr]   Downloaded cortex-m-rtic-macros v0.5.3
[INFO] [stderr]   Downloaded nrf-usbd v0.1.1
[INFO] [stderr]   Downloaded rtic-syntax v0.4.0
[INFO] [stderr]   Downloaded cortex-m-rtic v0.5.9
[INFO] [stderr]   Downloaded fixed v1.27.0
[INFO] [stderr]   Downloaded nrf52840-pac v0.10.1
[INFO] [stderr]   Downloaded embedded-dma v0.1.2
[INFO] [stderr]   Downloaded nrf-hal-common v0.14.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 8dc8ff3b61923454b626bbfa60e50f0079e51723ceef2fe028b694205323889f
[INFO] running `Command { std: "docker" "start" "-a" "8dc8ff3b61923454b626bbfa60e50f0079e51723ceef2fe028b694205323889f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8dc8ff3b61923454b626bbfa60e50f0079e51723ceef2fe028b694205323889f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8dc8ff3b61923454b626bbfa60e50f0079e51723ceef2fe028b694205323889f", kill_on_drop: false }`
[INFO] [stdout] 8dc8ff3b61923454b626bbfa60e50f0079e51723ceef2fe028b694205323889f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 2986b47f114fc944fda1e10056816a4af396e4eedca251e61af46eac8c63be38
[INFO] running `Command { std: "docker" "start" "-a" "2986b47f114fc944fda1e10056816a4af396e4eedca251e61af46eac8c63be38", kill_on_drop: false }`
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]    Compiling cortex-m-rt v0.7.3
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling az v1.2.1
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking bare-metal v1.0.0
[INFO] [stderr]    Compiling nrf52840-pac v0.10.1
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling fixed v1.27.0
[INFO] [stderr]     Checking cortex-m v0.7.7
[INFO] [stderr]     Checking critical-section v0.2.8
[INFO] [stderr]     Checking generic-array v0.12.4
[INFO] [stderr]     Checking generic-array v0.13.3
[INFO] [stderr]    Compiling heapless v0.6.1
[INFO] [stderr]    Compiling nrf-hal-common v0.14.1
[INFO] [stderr]     Checking usb-device v0.2.9
[INFO] [stderr]     Checking hash32 v0.1.1
[INFO] [stderr]     Checking as-slice v0.1.5
[INFO] [stderr]     Checking embedded-dma v0.1.2
[INFO] [stderr]    Compiling cortex-m-rtic v0.5.9
[INFO] [stderr]    Compiling nrf52840-hal v0.14.1
[INFO] [stderr]     Checking nrf-usbd v0.1.1
[INFO] [stderr]     Checking embedded-storage v0.2.0
[INFO] [stderr]     Checking rtic-core v0.3.1
[INFO] [stderr]     Checking groundhog v0.2.5
[INFO] [stderr]    Compiling rtic-syntax v0.4.0
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.7.0
[INFO] [stderr]    Compiling cortex-m-rtic-macros v0.5.3
[INFO] [stderr]     Checking groundhog-nrf52 v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.81s
[INFO] running `Command { std: "docker" "inspect" "2986b47f114fc944fda1e10056816a4af396e4eedca251e61af46eac8c63be38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2986b47f114fc944fda1e10056816a4af396e4eedca251e61af46eac8c63be38", kill_on_drop: false }`
[INFO] [stdout] 2986b47f114fc944fda1e10056816a4af396e4eedca251e61af46eac8c63be38