[INFO] cloning repository https://github.com/lonesometraveler/embassy-demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lonesometraveler/embassy-demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flonesometraveler%2Fembassy-demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flonesometraveler%2Fembassy-demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1eed51e9a6c7d91d53089bceb396ffba5d9177f6
[INFO] testing lonesometraveler/embassy-demo against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flonesometraveler%2Fembassy-demo" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-4-tc1/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-4-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/lonesometraveler/embassy-demo
[INFO] finished tweaking git repo https://github.com/lonesometraveler/embassy-demo
[INFO] tweaked toml for git repo https://github.com/lonesometraveler/embassy-demo written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/lonesometraveler/embassy-demo on toolchain caccb4d0368bd918ef6668af8e13834d07040417
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/lonesometraveler/embassy-demo 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" "+caccb4d0368bd918ef6668af8e13834d07040417" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Updating git repository `https://github.com/embassy-rs/embassy`
[INFO] [stderr]     Updating git submodule `https://github.com/embassy-rs/stm32-data.git`
[INFO] [stderr]     Updating git repository `https://github.com/embassy-rs/chiptool`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded volatile-register v0.2.1
[INFO] [stderr]   Downloaded embedded-hal v0.2.7
[INFO] [stderr]   Downloaded nb v0.1.3
[INFO] [stderr]   Downloaded vcell v0.1.3
[INFO] [stderr]   Downloaded nb v1.0.0
[INFO] [stderr]   Downloaded critical-section v1.1.1
[INFO] [stderr]   Downloaded embedded-io v0.4.0
[INFO] [stderr]   Downloaded spin v0.9.4
[INFO] [stderr]   Downloaded critical-section v0.2.7
[INFO] [stderr]   Downloaded bare-metal v1.0.0
[INFO] [stderr]   Downloaded riscv-target v0.1.2
[INFO] [stderr]   Downloaded serde_yaml v0.8.26
[INFO] [stderr]   Downloaded bit_field v0.10.1
[INFO] [stderr]   Downloaded byteorder v1.3.4
[INFO] [stderr]   Downloaded anyhow v1.0.66
[INFO] [stderr]   Downloaded cortex-m-rt-macros v0.7.0
[INFO] [stderr]   Downloaded sdio-host v0.5.0
[INFO] [stderr]   Downloaded darling_macro v0.13.4
[INFO] [stderr]   Downloaded atomic-polyfill v0.1.10
[INFO] [stderr]   Downloaded darling_core v0.13.4
[INFO] [stderr]   Downloaded bxcan v0.7.0
[INFO] [stderr]   Downloaded az v1.2.1
[INFO] [stderr]   Downloaded embedded-hal-nb v1.0.0-alpha.1
[INFO] [stderr]   Downloaded bitfield v0.13.2
[INFO] [stderr]   Downloaded bytemuck v1.12.1
[INFO] [stderr]   Downloaded half v2.1.0
[INFO] [stderr]   Downloaded itoa v1.0.4
[INFO] [stderr]   Downloaded darling v0.13.4
[INFO] [stderr]   Downloaded serde_json v1.0.89
[INFO] [stderr]   Downloaded xml-rs v0.7.0
[INFO] [stderr]   Downloaded nrf52840-pac v0.12.2
[INFO] [stderr]   Downloaded nrf52832-pac v0.12.2
[INFO] [stderr]   Downloaded riscv v0.7.0
[INFO] [stderr]   Downloaded defmt-rtt v0.3.2
[INFO] [stderr]   Downloaded embedded-storage-async v0.3.0
[INFO] [stderr]   Downloaded stm32-fmc v0.2.4
[INFO] [stderr]   Downloaded svd-parser v0.10.2
[INFO] [stderr]   Downloaded xmltree v0.8.0
[INFO] [stderr]   Downloaded atomic-polyfill v1.0.1
[INFO] [stderr]   Downloaded defmt-parser v0.3.1
[INFO] [stderr]   Downloaded defmt-macros v0.3.2
[INFO] [stderr]   Downloaded defmt v0.3.2
[INFO] [stderr]   Downloaded panic-probe v0.3.0
[INFO] [stderr]   Downloaded static_cell v1.0.0
[INFO] [stderr]   Downloaded embedded-hal-async v0.2.0-alpha.0
[INFO] [stderr]   Downloaded embedded-storage v0.3.0
[INFO] [stderr]   Downloaded libc v0.2.135
[INFO] [stderr]   Downloaded heapless v0.7.16
[INFO] [stderr]   Downloaded cortex-m v0.7.6
[INFO] [stderr]   Downloaded yaml-rust v0.4.5
[INFO] [stderr]   Downloaded hash32 v0.2.1
[INFO] [stderr]   Downloaded seq-macro v0.3.1
[INFO] [stderr]   Downloaded bare-metal v0.2.5
[INFO] [stderr]   Downloaded cortex-m-rt v0.7.3
[INFO] [stderr]   Downloaded inflections v1.1.1
[INFO] [stderr]   Downloaded embedded-hal v1.0.0-alpha.9
[INFO] [stderr]   Downloaded fixed v1.19.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 04c6ed5603af63ab9a44aa58be83fff09fc6c149ebb3f7c5c0d27c14b75b5463
[INFO] running `Command { std: "docker" "start" "-a" "04c6ed5603af63ab9a44aa58be83fff09fc6c149ebb3f7c5c0d27c14b75b5463", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04c6ed5603af63ab9a44aa58be83fff09fc6c149ebb3f7c5c0d27c14b75b5463", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04c6ed5603af63ab9a44aa58be83fff09fc6c149ebb3f7c5c0d27c14b75b5463", kill_on_drop: false }`
[INFO] [stdout] 04c6ed5603af63ab9a44aa58be83fff09fc6c149ebb3f7c5c0d27c14b75b5463
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+caccb4d0368bd918ef6668af8e13834d07040417" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 19ce0d989fd07eb6c9c09ed382636bf613014e464b4aa38d8502e17888f23cbe
[INFO] running `Command { std: "docker" "start" "-a" "19ce0d989fd07eb6c9c09ed382636bf613014e464b4aa38d8502e17888f23cbe", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.46
[INFO] [stderr]    Compiling unicode-ident v1.0.4
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling syn v1.0.101
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling defmt v0.3.2
[INFO] [stderr]    Compiling defmt-macros v0.3.2
[INFO] [stderr]    Compiling defmt-parser v0.3.1
[INFO] [stderr]    Compiling semver v1.0.14
[INFO] [stderr]    Compiling critical-section v1.1.1
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling futures-core v0.3.24
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling cortex-m v0.7.6
[INFO] [stderr]    Compiling futures-task v0.3.24
[INFO] [stderr]    Compiling nb v1.0.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.46/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]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling futures-sink v0.3.24
[INFO] [stderr]    Compiling futures-util v0.3.24
[INFO] [stderr]    Compiling atomic-polyfill v1.0.1
[INFO] [stderr]    Compiling embedded-hal v0.2.7
[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" "19ce0d989fd07eb6c9c09ed382636bf613014e464b4aa38d8502e17888f23cbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19ce0d989fd07eb6c9c09ed382636bf613014e464b4aa38d8502e17888f23cbe", kill_on_drop: false }`
[INFO] [stdout] 19ce0d989fd07eb6c9c09ed382636bf613014e464b4aa38d8502e17888f23cbe