[INFO] cloning repository https://github.com/Phosfor/the_os
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Phosfor/the_os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPhosfor%2Fthe_os", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPhosfor%2Fthe_os'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 09733ae260bd9525a9b8d90f0a48c957fe381ec0
[INFO] testing Phosfor/the_os against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPhosfor%2Fthe_os" "/workspace/builds/worker-93/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-93/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Phosfor/the_os on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-93/source/.cargo/config
[INFO] started tweaking git repo https://github.com/Phosfor/the_os
[INFO] finished tweaking git repo https://github.com/Phosfor/the_os
[INFO] tweaked toml for git repo https://github.com/Phosfor/the_os written to /workspace/builds/worker-93/source/Cargo.toml
[INFO] crate git repo https://github.com/Phosfor/the_os already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4b587025ec6d3e77d4d9b6748638300feab027eeb3532964e68ba4e5a95f6ff3
[INFO] running `Command { std: "docker" "start" "-a" "4b587025ec6d3e77d4d9b6748638300feab027eeb3532964e68ba4e5a95f6ff3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4b587025ec6d3e77d4d9b6748638300feab027eeb3532964e68ba4e5a95f6ff3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b587025ec6d3e77d4d9b6748638300feab027eeb3532964e68ba4e5a95f6ff3", kill_on_drop: false }`
[INFO] [stdout] 4b587025ec6d3e77d4d9b6748638300feab027eeb3532964e68ba4e5a95f6ff3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7c81b6e3f9e39c3d988cdf478cd193a33cc08db8e98a19dec87d04dda998bfeb
[INFO] running `Command { std: "docker" "start" "-a" "7c81b6e3f9e39c3d988cdf478cd193a33cc08db8e98a19dec87d04dda998bfeb", kill_on_drop: false }`
[INFO] [stderr]    Compiling bit_field v0.10.0
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling riscv-target v0.1.2
[INFO] [stderr]    Compiling riscv v0.6.0
[INFO] [stderr]    Compiling the_os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: `#[panic_handler]` function required, but not found
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `the_os` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "7c81b6e3f9e39c3d988cdf478cd193a33cc08db8e98a19dec87d04dda998bfeb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c81b6e3f9e39c3d988cdf478cd193a33cc08db8e98a19dec87d04dda998bfeb", kill_on_drop: false }`
[INFO] [stdout] 7c81b6e3f9e39c3d988cdf478cd193a33cc08db8e98a19dec87d04dda998bfeb