[INFO] cloning repository https://github.com/mrk-its/llvm-mos-ferris-demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mrk-its/llvm-mos-ferris-demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrk-its%2Fllvm-mos-ferris-demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrk-its%2Fllvm-mos-ferris-demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eff566f068ce9b357dc51124536bb5317dc6a4fa
[INFO] checking mrk-its/llvm-mos-ferris-demo against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrk-its%2Fllvm-mos-ferris-demo" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mrk-its/llvm-mos-ferris-demo on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0/source/.cargo/config
[INFO] started tweaking git repo https://github.com/mrk-its/llvm-mos-ferris-demo
[INFO] finished tweaking git repo https://github.com/mrk-its/llvm-mos-ferris-demo
[INFO] tweaked toml for git repo https://github.com/mrk-its/llvm-mos-ferris-demo written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/mrk-its/llvm-mos-ferris-demo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 228305d602ba07ee5ce7900568bd889ac6a11df6822df97e8899e4f4e2918d4c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "228305d602ba07ee5ce7900568bd889ac6a11df6822df97e8899e4f4e2918d4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "228305d602ba07ee5ce7900568bd889ac6a11df6822df97e8899e4f4e2918d4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "228305d602ba07ee5ce7900568bd889ac6a11df6822df97e8899e4f4e2918d4c", kill_on_drop: false }`
[INFO] [stdout] 228305d602ba07ee5ce7900568bd889ac6a11df6822df97e8899e4f4e2918d4c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8887eec74172fae4a0f42a8b4a72e02cf2ee8de1640f18c48705eac20f6dc9b0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8887eec74172fae4a0f42a8b4a72e02cf2ee8de1640f18c48705eac20f6dc9b0", kill_on_drop: false }`
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]     Checking volatile-register v0.2.0
[INFO] [stderr]     Checking ferris v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]   --> src/main.rs:33:1
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn panic(_info: &PanicInfo) -> ! {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the lang item is first defined in crate `std` (which `test` depends on)
[INFO] [stdout]    = note: first definition in `std` loaded from /opt/rustwide/rustup-home/toolchains/5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-1a95cddb5b8aaf6b.rlib
[INFO] [stdout]    = note: second definition in the local crate (`ferris`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ferris` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "8887eec74172fae4a0f42a8b4a72e02cf2ee8de1640f18c48705eac20f6dc9b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8887eec74172fae4a0f42a8b4a72e02cf2ee8de1640f18c48705eac20f6dc9b0", kill_on_drop: false }`
[INFO] [stdout] 8887eec74172fae4a0f42a8b4a72e02cf2ee8de1640f18c48705eac20f6dc9b0