[INFO] cloning repository https://github.com/reallygoodprogrammer/mb2-noise-maker
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/reallygoodprogrammer/mb2-noise-maker" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freallygoodprogrammer%2Fmb2-noise-maker", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freallygoodprogrammer%2Fmb2-noise-maker'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c4b1a0186ad9c1b853abf70a51dfbf3ad755d6c4
[INFO] checking reallygoodprogrammer/mb2-noise-maker against try#969026c535f4240ff7866ef11207dfda18a26af6 for pr-146504
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freallygoodprogrammer%2Fmb2-noise-maker" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-7-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/reallygoodprogrammer/mb2-noise-maker
[INFO] finished tweaking git repo https://github.com/reallygoodprogrammer/mb2-noise-maker
[INFO] tweaked toml for git repo https://github.com/reallygoodprogrammer/mb2-noise-maker written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/reallygoodprogrammer/mb2-noise-maker on toolchain 969026c535f4240ff7866ef11207dfda18a26af6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+969026c535f4240ff7866ef11207dfda18a26af6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/reallygoodprogrammer/mb2-noise-maker 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" "+969026c535f4240ff7866ef11207dfda18a26af6" "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 ufmt-write v0.1.0
[INFO] [stderr]   Downloaded rtt-target v0.6.1
[INFO] [stderr]   Downloaded panic-halt v1.0.0
[INFO] [stderr]   Downloaded critical-section v1.2.0
[INFO] [stderr]   Downloaded cortex-m-rt-macros v0.7.5
[INFO] [stderr]   Downloaded microbit-v2 v0.15.1
[INFO] [stderr]   Downloaded nrf52833-hal v0.18.0
[INFO] [stderr]   Downloaded crunchy v0.2.3
[INFO] [stderr]   Downloaded tiny-led-matrix v1.0.2
[INFO] [stderr]   Downloaded cast v0.3.0
[INFO] [stderr]   Downloaded hash32 v0.3.1
[INFO] [stderr]   Downloaded embedded-storage v0.3.1
[INFO] [stderr]   Downloaded microbit-common v0.15.1
[INFO] [stderr]   Downloaded nanorand v0.8.0
[INFO] [stderr]   Downloaded cortex-m-rt v0.7.5
[INFO] [stderr]   Downloaded embedded-hal v1.0.0
[INFO] [stderr]   Downloaded nrf-usbd v0.3.0
[INFO] [stderr]   Downloaded heapless v0.8.0
[INFO] [stderr]   Downloaded nrf-hal-common v0.18.0
[INFO] [stderr]   Downloaded half v2.6.0
[INFO] [stderr]   Downloaded usb-device v0.3.2
[INFO] [stderr]   Downloaded az v1.2.1
[INFO] [stderr]   Downloaded volatile-register v0.2.2
[INFO] [stderr]   Downloaded fixed v1.29.0
[INFO] [stderr]   Downloaded nrf52833-pac v0.12.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+969026c535f4240ff7866ef11207dfda18a26af6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e4b70bf61b68e553088dcbe8f64ec8676881e502e9262cedc39802ef69a57695
[INFO] running `Command { std: "docker" "start" "-a" "e4b70bf61b68e553088dcbe8f64ec8676881e502e9262cedc39802ef69a57695", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4b70bf61b68e553088dcbe8f64ec8676881e502e9262cedc39802ef69a57695", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4b70bf61b68e553088dcbe8f64ec8676881e502e9262cedc39802ef69a57695", kill_on_drop: false }`
[INFO] [stdout] e4b70bf61b68e553088dcbe8f64ec8676881e502e9262cedc39802ef69a57695
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+969026c535f4240ff7866ef11207dfda18a26af6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 59f29a9dea2962d8cc704134130b394000b01a2d284c70cd3db7495afbd91086
[INFO] running `Command { std: "docker" "start" "-a" "59f29a9dea2962d8cc704134130b394000b01a2d284c70cd3db7495afbd91086", kill_on_drop: false }`
[INFO] [stderr]    Compiling cortex-m v0.7.7
[INFO] [stderr]    Compiling portable-atomic v1.11.0
[INFO] [stderr]     Checking nb v1.1.0
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling cortex-m-rt v0.7.5
[INFO] [stderr]    Compiling heapless v0.8.0
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking critical-section v1.2.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]     Checking volatile-register v0.2.2
[INFO] [stderr]     Checking hash32 v0.3.1
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]    Compiling az v1.2.1
[INFO] [stderr]    Compiling nrf52833-pac v0.12.2
[INFO] [stderr]    Compiling fixed v1.29.0
[INFO] [stderr]     Checking half v2.6.0
[INFO] [stderr]     Checking bytemuck v1.23.0
[INFO] [stderr]    Compiling nrf-hal-common v0.18.0
[INFO] [stderr]     Checking embedded-dma v0.2.0
[INFO] [stderr]     Checking embedded-io v0.6.1
[INFO] [stderr]     Checking embedded-storage v0.3.1
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]    Compiling nrf52833-hal v0.18.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking embedded-hal v1.0.0
[INFO] [stderr]     Checking tiny-led-matrix v1.0.2
[INFO] [stderr]     Checking ufmt-write v0.1.0
[INFO] [stderr]     Checking usb-device v0.3.2
[INFO] [stderr]     Checking rtt-target v0.6.1
[INFO] [stderr]     Checking nanorand v0.8.0
[INFO] [stderr]     Checking panic-halt v1.0.0
[INFO] [stderr]     Checking nrf-usbd v0.3.0
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.7.5
[INFO] [stderr]     Checking microbit-common v0.15.1
[INFO] [stderr]     Checking microbit-v2 v0.15.1
[INFO] [stderr]     Checking noiser 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 `noiser` (bin "noiser") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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 `noiser` depends on)
[INFO] [stdout]   = note: first definition in `panic_halt` loaded from /opt/rustwide/target/debug/deps/libpanic_halt-22485f6879fd0020.rmeta
[INFO] [stdout]   = note: second definition in `std` loaded from /opt/rustwide/rustup-home/toolchains/969026c535f4240ff7866ef11207dfda18a26af6/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-2bfe6d313f1a27d4.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 `noiser` (bin "noiser" test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "59f29a9dea2962d8cc704134130b394000b01a2d284c70cd3db7495afbd91086", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59f29a9dea2962d8cc704134130b394000b01a2d284c70cd3db7495afbd91086", kill_on_drop: false }`
[INFO] [stdout] 59f29a9dea2962d8cc704134130b394000b01a2d284c70cd3db7495afbd91086