[INFO] cloning repository https://github.com/DieracDelta/NixKernelTutorial
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DieracDelta/NixKernelTutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDieracDelta%2FNixKernelTutorial", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDieracDelta%2FNixKernelTutorial'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c205c3e1d3cab083ff39899d9fef931ae07c3463
[INFO] checking DieracDelta/NixKernelTutorial against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDieracDelta%2FNixKernelTutorial" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DieracDelta/NixKernelTutorial 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] started tweaking git repo https://github.com/DieracDelta/NixKernelTutorial
[INFO] finished tweaking git repo https://github.com/DieracDelta/NixKernelTutorial
[INFO] tweaked toml for git repo https://github.com/DieracDelta/NixKernelTutorial written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/DieracDelta/NixKernelTutorial 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 266ee14cb850569caba39b3c8176e32904863b2151dcf75290ac268f95714bff
[INFO] running `Command { std: "docker" "start" "-a" "266ee14cb850569caba39b3c8176e32904863b2151dcf75290ac268f95714bff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "266ee14cb850569caba39b3c8176e32904863b2151dcf75290ac268f95714bff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "266ee14cb850569caba39b3c8176e32904863b2151dcf75290ac268f95714bff", kill_on_drop: false }`
[INFO] [stdout] 266ee14cb850569caba39b3c8176e32904863b2151dcf75290ac268f95714bff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 644be79383029bf9547b22fec7359a046a52dd013a178ac85e0aae734df8491a
[INFO] running `Command { std: "docker" "start" "-a" "644be79383029bf9547b22fec7359a046a52dd013a178ac85e0aae734df8491a", 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]     Checking nix_example_kernel v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stdout] error: invalid register `a0`: unknown register
[INFO] [stdout]   --> src/main.rs:49:24
[INFO] [stdout]    |
[INFO] [stdout] 49 |     " , in(reg) (&ch), out("a0") _, out("a7") _
[INFO] [stdout]    |                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid register `a7`: unknown register
[INFO] [stdout]   --> src/main.rs:49:37
[INFO] [stdout]    |
[INFO] [stdout] 49 |     " , in(reg) (&ch), out("a0") _, out("a7") _
[INFO] [stdout]    |                                     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: language item required, but not found: `eh_personality`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `nix_example_kernel` due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: invalid register `a0`: unknown register
[INFO] [stdout]   --> src/main.rs:49:24
[INFO] [stdout]    |
[INFO] [stdout] 49 |     " , in(reg) (&ch), out("a0") _, out("a7") _
[INFO] [stdout]    |                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid register `a7`: unknown register
[INFO] [stdout]   --> src/main.rs:49:37
[INFO] [stdout]    |
[INFO] [stdout] 49 |     " , in(reg) (&ch), out("a0") _, out("a7") _
[INFO] [stdout]    |                                     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]   --> src/main.rs:38:1
[INFO] [stdout]    |
[INFO] [stdout] 38 | 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/a7a572ce3edd6d476191fbfe92c9c1986e009b34/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-1dd6c19f0820d51d.rlib
[INFO] [stdout]    = note: second definition in the local crate (`nix_example_kernel`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[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" "644be79383029bf9547b22fec7359a046a52dd013a178ac85e0aae734df8491a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "644be79383029bf9547b22fec7359a046a52dd013a178ac85e0aae734df8491a", kill_on_drop: false }`
[INFO] [stdout] 644be79383029bf9547b22fec7359a046a52dd013a178ac85e0aae734df8491a