[INFO] cloning repository https://github.com/gonardfreeman/mbit_ping_pong
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gonardfreeman/mbit_ping_pong" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgonardfreeman%2Fmbit_ping_pong", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgonardfreeman%2Fmbit_ping_pong'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d134d26c831a7bb37e65b3916618054dfdd4d6c0
[INFO] testing gonardfreeman/mbit_ping_pong against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgonardfreeman%2Fmbit_ping_pong" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-6-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/gonardfreeman/mbit_ping_pong
[INFO] finished tweaking git repo https://github.com/gonardfreeman/mbit_ping_pong
[INFO] tweaked toml for git repo https://github.com/gonardfreeman/mbit_ping_pong written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/gonardfreeman/mbit_ping_pong on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/gonardfreeman/mbit_ping_pong 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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7f34fd8262219cdd869f66051b9fdc7cb71f762fa8fef255a103c1d18a05cf03
[INFO] running `Command { std: "docker" "start" "-a" "7f34fd8262219cdd869f66051b9fdc7cb71f762fa8fef255a103c1d18a05cf03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7f34fd8262219cdd869f66051b9fdc7cb71f762fa8fef255a103c1d18a05cf03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f34fd8262219cdd869f66051b9fdc7cb71f762fa8fef255a103c1d18a05cf03", kill_on_drop: false }`
[INFO] [stdout] 7f34fd8262219cdd869f66051b9fdc7cb71f762fa8fef255a103c1d18a05cf03
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c218c35bea78bd7aba34ae929ed6c4d0361642fc106718025f2f2a949d743954
[INFO] running `Command { std: "docker" "start" "-a" "c218c35bea78bd7aba34ae929ed6c4d0361642fc106718025f2f2a949d743954", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling cortex-m v0.7.7
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling nb v1.1.0
[INFO] [stderr]    Compiling critical-section v1.1.3
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling vcell v0.1.3
[INFO] [stderr]    Compiling heapless v0.8.0
[INFO] [stderr]    Compiling portable-atomic v1.7.0
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling cortex-m-rt v0.7.3
[INFO] [stderr]    Compiling embedded-hal v0.2.7
[INFO] [stderr]    Compiling volatile-register v0.2.2
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling az v1.2.1
[INFO] [stderr]    Compiling bitfield v0.13.2
[INFO] [stderr]    Compiling hash32 v0.3.1
[INFO] [stderr]    Compiling fixed v1.28.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling nrf52833-pac v0.12.2
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling half v2.4.1
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling nrf-hal-common v0.18.0
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling bytemuck v1.17.0
[INFO] [stderr]    Compiling embedded-dma v0.2.0
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling usb-device v0.3.2
[INFO] [stderr]    Compiling nrf52833-hal v0.18.0
[INFO] [stderr]    Compiling cast v0.3.0
[INFO] [stderr]    Compiling embedded-hal v1.0.0
[INFO] [stderr]    Compiling embedded-io v0.6.1
[INFO] [stderr]    Compiling embedded-storage v0.3.1
[INFO] [stderr]    Compiling ufmt-write v0.1.0
[INFO] [stderr]    Compiling panic-halt v0.2.0
[INFO] [stderr]    Compiling rtt-target v0.5.0
[INFO] [stderr]    Compiling nrf-usbd v0.3.0
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.7.0
[INFO] [stderr]    Compiling ping-pong 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 `ping-pong` (bin "ping-pong") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "c218c35bea78bd7aba34ae929ed6c4d0361642fc106718025f2f2a949d743954", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c218c35bea78bd7aba34ae929ed6c4d0361642fc106718025f2f2a949d743954", kill_on_drop: false }`
[INFO] [stdout] c218c35bea78bd7aba34ae929ed6c4d0361642fc106718025f2f2a949d743954