[INFO] cloning repository https://github.com/vishen/x64-kernel
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vishen/x64-kernel" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvishen%2Fx64-kernel"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvishen%2Fx64-kernel'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c3bc75df3c3ded70405c29168268f47cf8745155
[INFO] checking vishen/x64-kernel against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvishen%2Fx64-kernel" "/workspace/builds/worker-8/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vishen/x64-kernel on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/vishen/x64-kernel
[INFO] finished tweaking git repo https://github.com/vishen/x64-kernel
[INFO] tweaked toml for git repo https://github.com/vishen/x64-kernel written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/vishen/x64-kernel already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7c8799b84aa26a660e8e951c6e1cc233d8373e8df8bcc435a9f76069861f7d2d
[INFO] running `"docker" "start" "-a" "7c8799b84aa26a660e8e951c6e1cc233d8373e8df8bcc435a9f76069861f7d2d"`
[INFO] [stderr]     Checking rlibc v0.1.5
[INFO] [stderr]     Checking spin v0.4.5
[INFO] [stderr]     Checking volatile v0.1.0
[INFO] [stderr]     Checking jp_os v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0583]: file not found for module `vga_buffer`
[INFO] [stderr]   --> src/lib.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | mod vga_buffer;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: to create the module `vga_buffer`, create file "src/vga_buffer.rs"
[INFO] [stderr] 
[INFO] [stderr] error: cannot find macro `println` in this scope
[INFO] [stderr]   --> src/lib.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     println!("{}", { println!("inner"); "outer" });
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: cannot find macro `println` in this scope
[INFO] [stderr]   --> src/lib.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     println!("Hello World{}", "!");
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `clear_screen` in module `vga_buffer`
[INFO] [stderr]   --> src/lib.rs:33:17
[INFO] [stderr]    |
[INFO] [stderr] 33 |     vga_buffer::clear_screen();
[INFO] [stderr]    |                 ^^^^^^^^^^^^ not found in `vga_buffer`
[INFO] [stderr] 
[INFO] [stderr] error[E0152]: found duplicate lang item `eh_personality`
[INFO] [stderr]   --> src/lib.rs:47:28
[INFO] [stderr]    |
[INFO] [stderr] 47 | #[lang = "eh_personality"] extern fn eh_personality() {}
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: the lang item is first defined in crate `panic_unwind` (which `std` depends on)
[INFO] [stderr] 
[INFO] [stderr] error[E0522]: definition of an unknown language item: `panic_fmt`
[INFO] [stderr]   --> src/lib.rs:48:1
[INFO] [stderr]    |
[INFO] [stderr] 48 | #[lang = "panic_fmt"] #[no_mangle] pub extern fn panic_fmt() -> ! {loop{}}
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^ definition of unknown language item `panic_fmt`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 6 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0152, E0425, E0522, E0583.
[INFO] [stderr] For more information about an error, try `rustc --explain E0152`.
[INFO] [stderr] error: could not compile `jp_os`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "7c8799b84aa26a660e8e951c6e1cc233d8373e8df8bcc435a9f76069861f7d2d"`
[INFO] running `"docker" "rm" "-f" "7c8799b84aa26a660e8e951c6e1cc233d8373e8df8bcc435a9f76069861f7d2d"`
[INFO] [stdout] 7c8799b84aa26a660e8e951c6e1cc233d8373e8df8bcc435a9f76069861f7d2d