[INFO] cloning repository https://github.com/khollbach/cortex-m-rt-hello-world-microbit
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/khollbach/cortex-m-rt-hello-world-microbit" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkhollbach%2Fcortex-m-rt-hello-world-microbit", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkhollbach%2Fcortex-m-rt-hello-world-microbit'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dc816715c820c6ce12e01b70d208871adb677548
[INFO] checking khollbach/cortex-m-rt-hello-world-microbit against master#8317fef20409adedaa7c385fa6e954867bf626fc for pr-154149-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkhollbach%2Fcortex-m-rt-hello-world-microbit" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-0-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/khollbach/cortex-m-rt-hello-world-microbit
[INFO] finished tweaking git repo https://github.com/khollbach/cortex-m-rt-hello-world-microbit
[INFO] tweaked toml for git repo https://github.com/khollbach/cortex-m-rt-hello-world-microbit written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/khollbach/cortex-m-rt-hello-world-microbit on toolchain 8317fef20409adedaa7c385fa6e954867bf626fc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8317fef20409adedaa7c385fa6e954867bf626fc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/khollbach/cortex-m-rt-hello-world-microbit 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" "+8317fef20409adedaa7c385fa6e954867bf626fc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded panic-halt v1.0.0
[INFO] [stderr]   Downloaded cortex-m-rt v0.7.5
[INFO] [stderr]   Downloaded cortex-m-rt-macros v0.7.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+8317fef20409adedaa7c385fa6e954867bf626fc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 045e34555a7b69801915af392c4f44fd37e0b25ab5653dba2bb97410ae0ef4f8
[INFO] running `Command { std: "docker" "start" "-a" "045e34555a7b69801915af392c4f44fd37e0b25ab5653dba2bb97410ae0ef4f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "045e34555a7b69801915af392c4f44fd37e0b25ab5653dba2bb97410ae0ef4f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "045e34555a7b69801915af392c4f44fd37e0b25ab5653dba2bb97410ae0ef4f8", kill_on_drop: false }`
[INFO] [stdout] 045e34555a7b69801915af392c4f44fd37e0b25ab5653dba2bb97410ae0ef4f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+8317fef20409adedaa7c385fa6e954867bf626fc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 23b479e32198b7e5078077c1b13ea7e4a5e6ff929d312ca857272854f1a4092e
[INFO] running `Command { std: "docker" "start" "-a" "23b479e32198b7e5078077c1b13ea7e4a5e6ff929d312ca857272854f1a4092e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.104
[INFO] [stderr]    Compiling quote v1.0.42
[INFO] [stderr]    Compiling unicode-ident v1.0.22
[INFO] [stderr]    Compiling cortex-m-rt v0.7.5
[INFO] [stderr]     Checking panic-halt v1.0.0
[INFO] [stderr]    Compiling syn v2.0.112
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.7.5
[INFO] [stderr]     Checking cortex-m-rt-hello-world v0.1.0 (/opt/rustwide/workdir)
[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 `cortex_m_rt_hello_world` depends on)
[INFO] [stdout]   = note: first definition in `panic_halt` loaded from /opt/rustwide/target/debug/deps/libpanic_halt-357548d739fe60f4.rmeta
[INFO] [stdout]   = note: second definition in `std` loaded from /opt/rustwide/rustup-home/toolchains/8317fef20409adedaa7c385fa6e954867bf626fc/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-fa01d964e82d0da8.rmeta
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cortex-m-rt-hello-world` (bin "cortex-m-rt-hello-world" test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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 `cortex-m-rt-hello-world` (bin "cortex-m-rt-hello-world") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "23b479e32198b7e5078077c1b13ea7e4a5e6ff929d312ca857272854f1a4092e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23b479e32198b7e5078077c1b13ea7e4a5e6ff929d312ca857272854f1a4092e", kill_on_drop: false }`
[INFO] [stdout] 23b479e32198b7e5078077c1b13ea7e4a5e6ff929d312ca857272854f1a4092e