[INFO] cloning repository https://github.com/faithanalog/rustc-avr-bug-repro
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/faithanalog/rustc-avr-bug-repro" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffaithanalog%2Frustc-avr-bug-repro", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffaithanalog%2Frustc-avr-bug-repro'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 65207a4dcea5d5dd369759e5114255bc4386606e
[INFO] checking faithanalog/rustc-avr-bug-repro/65207a4dcea5d5dd369759e5114255bc4386606e against master#ff1737bb00913444173658b4e0b274fd79aabf66 for pr-132712-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffaithanalog%2Frustc-avr-bug-repro" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/faithanalog/rustc-avr-bug-repro on toolchain ff1737bb00913444173658b4e0b274fd79aabf66
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-2-tc1/source/.cargo/config
[INFO] started tweaking git repo https://github.com/faithanalog/rustc-avr-bug-repro
[INFO] finished tweaking git repo https://github.com/faithanalog/rustc-avr-bug-repro
[INFO] tweaked toml for git repo https://github.com/faithanalog/rustc-avr-bug-repro written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/faithanalog/rustc-avr-bug-repro 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" "+ff1737bb00913444173658b4e0b274fd79aabf66" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded avr-std-stub v1.0.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7f9795caabac292c66ce36ca311cbd693ccd72ebf494d3eb09020ad8834f5bad
[INFO] running `Command { std: "docker" "start" "-a" "7f9795caabac292c66ce36ca311cbd693ccd72ebf494d3eb09020ad8834f5bad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7f9795caabac292c66ce36ca311cbd693ccd72ebf494d3eb09020ad8834f5bad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f9795caabac292c66ce36ca311cbd693ccd72ebf494d3eb09020ad8834f5bad", kill_on_drop: false }`
[INFO] [stdout] 7f9795caabac292c66ce36ca311cbd693ccd72ebf494d3eb09020ad8834f5bad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 25f7913c542f56cc0f3fb6b24a5004b177aea64c89ee6cf7b5d93ad684257bf9
[INFO] running `Command { std: "docker" "start" "-a" "25f7913c542f56cc0f3fb6b24a5004b177aea64c89ee6cf7b5d93ad684257bf9", kill_on_drop: false }`
[INFO] [stderr]     Checking avr-std-stub v1.0.3
[INFO] [stderr]     Checking risky v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: `#[panic_handler]` function required, but not found
[INFO] [stdout] 
[INFO] [stdout] 
[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 `risky` (bin "risky") due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "25f7913c542f56cc0f3fb6b24a5004b177aea64c89ee6cf7b5d93ad684257bf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25f7913c542f56cc0f3fb6b24a5004b177aea64c89ee6cf7b5d93ad684257bf9", kill_on_drop: false }`
[INFO] [stdout] 25f7913c542f56cc0f3fb6b24a5004b177aea64c89ee6cf7b5d93ad684257bf9