[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] checking Phosfor/the_os against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPhosfor%2Fthe_os" "/workspace/builds/worker-47/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-47/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Phosfor/the_os on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-47/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-47/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" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bit_field v0.10.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/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" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f8861733671f0b360f00ed4a7bb12eafdd9ee767bd61c029f38985840321a05e
[INFO] running `Command { std: "docker" "start" "-a" "f8861733671f0b360f00ed4a7bb12eafdd9ee767bd61c029f38985840321a05e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f8861733671f0b360f00ed4a7bb12eafdd9ee767bd61c029f38985840321a05e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8861733671f0b360f00ed4a7bb12eafdd9ee767bd61c029f38985840321a05e", kill_on_drop: false }`
[INFO] [stdout] f8861733671f0b360f00ed4a7bb12eafdd9ee767bd61c029f38985840321a05e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/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" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 47495d2e7155b0a7fb6a4613bdf61d0bcc79f9829f948bd166e4211f93888cd7
[INFO] running `Command { std: "docker" "start" "-a" "47495d2e7155b0a7fb6a4613bdf61d0bcc79f9829f948bd166e4211f93888cd7", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]     Checking bit_field v0.10.0
[INFO] [stderr]     Checking bitflags v1.2.1
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling aho-corasick v0.7.13
[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]     Checking the_os v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[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] [stderr] error: failed to migrate to next edition
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `cargo fix --edition --allow-no-vcs --allow-dirty --frozen --all --all-targets --message-format=json` (exit status: 101)
[INFO] running `Command { std: "docker" "inspect" "47495d2e7155b0a7fb6a4613bdf61d0bcc79f9829f948bd166e4211f93888cd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47495d2e7155b0a7fb6a4613bdf61d0bcc79f9829f948bd166e4211f93888cd7", kill_on_drop: false }`
[INFO] [stdout] 47495d2e7155b0a7fb6a4613bdf61d0bcc79f9829f948bd166e4211f93888cd7