[INFO] cloning repository https://github.com/kstepanovdev/rust-embedded
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kstepanovdev/rust-embedded" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkstepanovdev%2Frust-embedded", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkstepanovdev%2Frust-embedded'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6fb91709ddb29ccc452f2909a1558078bbdb0fae
[INFO] checking kstepanovdev/rust-embedded/6fb91709ddb29ccc452f2909a1558078bbdb0fae against master#249cb84316401daf040832cdbb8a45e0f5ab6af8 for pr-138438
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkstepanovdev%2Frust-embedded" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kstepanovdev/rust-embedded on toolchain 249cb84316401daf040832cdbb8a45e0f5ab6af8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+249cb84316401daf040832cdbb8a45e0f5ab6af8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/kstepanovdev/rust-embedded
[INFO] finished tweaking git repo https://github.com/kstepanovdev/rust-embedded
[INFO] tweaked toml for git repo https://github.com/kstepanovdev/rust-embedded written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/kstepanovdev/rust-embedded 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" "+249cb84316401daf040832cdbb8a45e0f5ab6af8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded stm32f4xx-hal v0.21.0
[INFO] [stderr]   Downloaded stm32f4 v0.15.1
[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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+249cb84316401daf040832cdbb8a45e0f5ab6af8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c6ccdad7f505026b2d8c9e10c1c8a970a1f11acee9fc80db122e03f7c1909f06
[INFO] running `Command { std: "docker" "start" "-a" "c6ccdad7f505026b2d8c9e10c1c8a970a1f11acee9fc80db122e03f7c1909f06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c6ccdad7f505026b2d8c9e10c1c8a970a1f11acee9fc80db122e03f7c1909f06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6ccdad7f505026b2d8c9e10c1c8a970a1f11acee9fc80db122e03f7c1909f06", kill_on_drop: false }`
[INFO] [stdout] c6ccdad7f505026b2d8c9e10c1c8a970a1f11acee9fc80db122e03f7c1909f06
[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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+249cb84316401daf040832cdbb8a45e0f5ab6af8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 08a7065fb6c756aecda1500ee13c5fa6b1bb100951d5c0df510a4493775adafb
[INFO] running `Command { std: "docker" "start" "-a" "08a7065fb6c756aecda1500ee13c5fa6b1bb100951d5c0df510a4493775adafb", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking nb v1.1.0
[INFO] [stderr]    Compiling cortex-m-rt v0.7.3
[INFO] [stderr]    Compiling cortex-m v0.7.7
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking critical-section v1.1.2
[INFO] [stderr]     Checking powerfmt v0.2.0
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]     Checking gcd v2.3.0
[INFO] [stderr]    Compiling stm32f4 v0.15.1
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking bare-metal v1.0.0
[INFO] [stderr]    Compiling stm32f4xx-hal v0.21.0
[INFO] [stderr]     Checking embedded-hal v1.0.0
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking volatile-register v0.2.2
[INFO] [stderr]    Compiling litrs v0.4.1
[INFO] [stderr]     Checking num-conv v0.1.0
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking deranged v0.3.11
[INFO] [stderr]     Checking time-core v0.1.2
[INFO] [stderr]     Checking fugit v0.3.7
[INFO] [stderr]     Checking embedded-hal-nb v1.0.0
[INFO] [stderr]     Checking embedded-dma v0.2.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking ufmt-write v0.1.0
[INFO] [stderr]     Checking embedded-storage v0.3.1
[INFO] [stderr]     Checking rtt-target v0.5.0
[INFO] [stderr]     Checking panic-halt v0.2.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]     Checking fugit-timer v0.1.3
[INFO] [stderr]    Compiling document-features v0.2.10
[INFO] [stderr]     Checking time v0.3.36
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.75
[INFO] [stderr]    Compiling enumflags2_derive v0.7.10
[INFO] [stderr]     Checking enumflags2 v0.7.10
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.7.0
[INFO] [stderr]     Checking rust_embedded v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: unwinding panics are not supported without std
[INFO] [stdout]   |
[INFO] [stdout]   = help: using nightly cargo, use -Zbuild-std with panic="abort" to avoid unwinding
[INFO] [stdout]   = note: since the core library is usually precompiled with panic="unwind", rebuilding your crate with panic="abort" may not be enough to fix the problem
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0152]: duplicate lang item in crate `std` (which `test` depends on): `panic_impl`
[INFO] [stdout]   |
[INFO] [stdout]   = note: the lang item is first defined in crate `panic_halt` (which `rust_embedded` depends on)
[INFO] [stdout]   = note: first definition in `panic_halt` loaded from /opt/rustwide/target/debug/deps/libpanic_halt-b09f8ab056e64272.rmeta
[INFO] [stdout]   = note: second definition in `std` loaded from /opt/rustwide/rustup-home/toolchains/249cb84316401daf040832cdbb8a45e0f5ab6af8/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-bef9ff2a661ad41c.rlib
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_embedded` (bin "rust_embedded") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `rust_embedded` (bin "rust_embedded" test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "08a7065fb6c756aecda1500ee13c5fa6b1bb100951d5c0df510a4493775adafb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08a7065fb6c756aecda1500ee13c5fa6b1bb100951d5c0df510a4493775adafb", kill_on_drop: false }`
[INFO] [stdout] 08a7065fb6c756aecda1500ee13c5fa6b1bb100951d5c0df510a4493775adafb