[INFO] cloning repository https://github.com/petekubiak/async-uarte
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/petekubiak/async-uarte" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpetekubiak%2Fasync-uarte", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpetekubiak%2Fasync-uarte'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 450baa7da488fa46e5dc6d7d787685213c5cda17
[INFO] testing petekubiak/async-uarte against try#db823df02fd0c2cf67b43025ac3fef3f2d743245 for pr-150681
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpetekubiak%2Fasync-uarte" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-0-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/petekubiak/async-uarte
[INFO] finished tweaking git repo https://github.com/petekubiak/async-uarte
[INFO] tweaked toml for git repo https://github.com/petekubiak/async-uarte written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/petekubiak/async-uarte on toolchain db823df02fd0c2cf67b43025ac3fef3f2d743245
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/petekubiak/async-uarte 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" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded panic-rtt-target v0.1.3
[INFO] [stderr]   Downloaded critical-section v1.1.3
[INFO] [stderr]   Downloaded nrf52832-hal v0.18.0
[INFO] [stderr]   Downloaded rtt-target v0.5.0
[INFO] [stderr]   Downloaded fixed v1.28.0
[INFO] [stderr]   Downloaded nrf-hal-common v0.18.0
[INFO] [stderr]   Downloaded nrf52832-pac v0.12.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e7a2882796ca661516e74d9846f25577d73c2dfb51bb9fe466ce997579ea36f9
[INFO] running `Command { std: "docker" "start" "-a" "e7a2882796ca661516e74d9846f25577d73c2dfb51bb9fe466ce997579ea36f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e7a2882796ca661516e74d9846f25577d73c2dfb51bb9fe466ce997579ea36f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7a2882796ca661516e74d9846f25577d73c2dfb51bb9fe466ce997579ea36f9", kill_on_drop: false }`
[INFO] [stdout] e7a2882796ca661516e74d9846f25577d73c2dfb51bb9fe466ce997579ea36f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 62c5912218ff21cf55f0c7af353fbff78c78b1d316cb938fa077bd40136adae8
[INFO] running `Command { std: "docker" "start" "-a" "62c5912218ff21cf55f0c7af353fbff78c78b1d316cb938fa077bd40136adae8", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling cortex-m v0.7.7
[INFO] [stderr]    Compiling critical-section v1.1.3
[INFO] [stderr]    Compiling cortex-m-rt v0.7.3
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling vcell v0.1.3
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling az v1.2.1
[INFO] [stderr]    Compiling embedded-hal v0.2.7
[INFO] [stderr]    Compiling volatile-register v0.2.2
[INFO] [stderr]    Compiling nrf52832-pac v0.12.2
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling bitfield v0.13.2
[INFO] [stderr]    Compiling fixed v1.28.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling half v2.4.1
[INFO] [stderr]    Compiling bytemuck v1.18.0
[INFO] [stderr]    Compiling nrf-hal-common v0.18.0
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling embedded-dma v0.2.0
[INFO] [stderr]    Compiling embedded-hal v1.0.0
[INFO] [stderr]    Compiling embedded-io v0.6.1
[INFO] [stderr]    Compiling ufmt-write v0.1.0
[INFO] [stderr]    Compiling embedded-storage v0.3.1
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling nrf52832-hal v0.18.0
[INFO] [stderr]    Compiling rtt-target v0.5.0
[INFO] [stderr]    Compiling gcd v2.3.0
[INFO] [stderr]    Compiling panic-rtt-target v0.1.3
[INFO] [stderr]    Compiling fugit v0.3.7
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.7.0
[INFO] [stderr]    Compiling async-uarte 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] [stderr] error: could not compile `async-uarte` (bin "async-uarte") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "62c5912218ff21cf55f0c7af353fbff78c78b1d316cb938fa077bd40136adae8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62c5912218ff21cf55f0c7af353fbff78c78b1d316cb938fa077bd40136adae8", kill_on_drop: false }`
[INFO] [stdout] 62c5912218ff21cf55f0c7af353fbff78c78b1d316cb938fa077bd40136adae8