[INFO] cloning repository https://github.com/Churrosoft/dfu-bootloader-f4
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Churrosoft/dfu-bootloader-f4" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChurrosoft%2Fdfu-bootloader-f4", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChurrosoft%2Fdfu-bootloader-f4'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fdeaeb6e34f3258e0997a890a12ac934e8e94d1b
[INFO] checking Churrosoft/dfu-bootloader-f4 against master#292be5c7c05138d753bbd4b30db7a3f1a5c914f7 for pr-148271
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChurrosoft%2Fdfu-bootloader-f4" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-1-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/Churrosoft/dfu-bootloader-f4
[INFO] finished tweaking git repo https://github.com/Churrosoft/dfu-bootloader-f4
[INFO] tweaked toml for git repo https://github.com/Churrosoft/dfu-bootloader-f4 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Churrosoft/dfu-bootloader-f4 on toolchain 292be5c7c05138d753bbd4b30db7a3f1a5c914f7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+292be5c7c05138d753bbd4b30db7a3f1a5c914f7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Churrosoft/dfu-bootloader-f4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+292be5c7c05138d753bbd4b30db7a3f1a5c914f7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded volatile-register v0.2.1
[INFO] [stderr]   Downloaded synopsys-usb-otg v0.3.2
[INFO] [stderr]   Downloaded cortex-m-rt-macros v0.7.0
[INFO] [stderr]   Downloaded fugit-timer v0.1.3
[INFO] [stderr]   Downloaded embedded-hal v1.0.0-alpha.8
[INFO] [stderr]   Downloaded heapless v0.6.1
[INFO] [stderr]   Downloaded rtic-syntax v0.4.0
[INFO] [stderr]   Downloaded cortex-m-rtic-macros v0.5.3
[INFO] [stderr]   Downloaded stm32f4xx-hal v0.14.0
[INFO] [stderr]   Downloaded rtic-core v0.3.1
[INFO] [stderr]   Downloaded usb-device v0.2.9
[INFO] [stderr]   Downloaded cortex-m-rt v0.7.2
[INFO] [stderr]   Downloaded cortex-m-rtic v0.5.9
[INFO] [stderr]   Downloaded stm32f4 v0.15.1
[INFO] [stderr]   Downloaded usbd-dfu v0.2.0
[INFO] [stderr]   Downloaded usbd-webusb v1.0.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+292be5c7c05138d753bbd4b30db7a3f1a5c914f7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a8fc3d6296f52837b38cc9d837440a30666de8a59a37d064f76fbc6c0f02c456
[INFO] running `Command { std: "docker" "start" "-a" "a8fc3d6296f52837b38cc9d837440a30666de8a59a37d064f76fbc6c0f02c456", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8fc3d6296f52837b38cc9d837440a30666de8a59a37d064f76fbc6c0f02c456", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8fc3d6296f52837b38cc9d837440a30666de8a59a37d064f76fbc6c0f02c456", kill_on_drop: false }`
[INFO] [stdout] a8fc3d6296f52837b38cc9d837440a30666de8a59a37d064f76fbc6c0f02c456
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+292be5c7c05138d753bbd4b30db7a3f1a5c914f7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6738bde53f4ffb3173fa4a938d90fa8653e8a27414afc34852d95f8843e98d95
[INFO] running `Command { std: "docker" "start" "-a" "6738bde53f4ffb3173fa4a938d90fa8653e8a27414afc34852d95f8843e98d95", kill_on_drop: false }`
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]    Compiling cortex-m v0.7.7
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]    Compiling cortex-m-rt v0.7.2
[INFO] [stderr]     Checking usb-device v0.2.9
[INFO] [stderr]    Compiling proc-macro2 v1.0.50
[INFO] [stderr]     Checking volatile-register v0.2.1
[INFO] [stderr]    Compiling heapless v0.6.1
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling synopsys-usb-otg v0.3.2
[INFO] [stderr]    Compiling stm32f4 v0.15.1
[INFO] [stderr]     Checking fugit v0.3.6
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]     Checking generic-array v0.12.4
[INFO] [stderr]     Checking generic-array v0.13.3
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]    Compiling cortex-m-rtic v0.5.9
[INFO] [stderr]     Checking bare-metal v1.0.0
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]     Checking time v0.3.17
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.50/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking embedded-hal v1.0.0-alpha.8
[INFO] [stderr]     Checking rtic-core v0.3.1
[INFO] [stderr]     Checking fugit-timer v0.1.3
[INFO] [stderr]     Checking embedded-storage v0.2.0
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking hash32 v0.1.1
[INFO] [stderr]     Checking panic-halt v0.2.0
[INFO] [stderr]     Checking usbd-dfu v0.2.0
[INFO] [stderr]     Checking usbd-webusb v1.0.2
[INFO] [stderr]     Checking as-slice v0.1.5
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "6738bde53f4ffb3173fa4a938d90fa8653e8a27414afc34852d95f8843e98d95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6738bde53f4ffb3173fa4a938d90fa8653e8a27414afc34852d95f8843e98d95", kill_on_drop: false }`
[INFO] [stdout] 6738bde53f4ffb3173fa4a938d90fa8653e8a27414afc34852d95f8843e98d95
