[INFO] updating cached repository https://github.com/aoozdemir/zos-kernel
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ff5848ee035d0a2c9fcd78971e1485bb033bab40
[INFO] checking aoozdemir/zos-kernel against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faoozdemir%2Fzos-kernel" "/workspace/builds/worker-10/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aoozdemir/zos-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/aoozdemir/zos-kernel
[INFO] finished tweaking git repo https://github.com/aoozdemir/zos-kernel
[INFO] tweaked toml for git repo https://github.com/aoozdemir/zos-kernel written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/aoozdemir/zos-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-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] dd52dcfa9caa3c8aa21c8dd6a9dc91ef7c713dc6c0df9d3d4e29faf31ce88c1d
[INFO] running `"docker" "start" "-a" "dd52dcfa9caa3c8aa21c8dd6a9dc91ef7c713dc6c0df9d3d4e29faf31ce88c1d"`
[INFO] [stderr]    Compiling libc v0.2.46
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking spin v0.4.10
[INFO] [stderr]     Checking spin v0.5.0
[INFO] [stderr]     Checking x86_64 v0.2.14
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]    Compiling rand v0.4.3
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling skeptic v0.5.0
[INFO] [stderr]    Compiling fixedvec v0.2.3
[INFO] [stderr]     Checking bootloader v0.3.11
[INFO] [stderr]     Checking zos v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/vga_buffer.rs:122:13
[INFO] [stderr]     |
[INFO] [stderr] 122 |         0x20...0x7e | b'\n' => self.write_byte(byte),
[INFO] [stderr]     |             ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: language item required, but not found: `eh_personality`
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/main.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     panic!("Panic message!");
[INFO] [stderr]    |     ------------------------- any code following this expression is unreachable
[INFO] [stderr] 19 | 
[INFO] [stderr] 20 |     loop {}
[INFO] [stderr]    |     ^^^^^^^ unreachable expression
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/vga_buffer.rs:122:13
[INFO] [stderr]     |
[INFO] [stderr] 122 |         0x20...0x7e | b'\n' => self.write_byte(byte),
[INFO] [stderr]     |             ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stderr]   --> src/main.rs:8:1
[INFO] [stderr]    |
[INFO] [stderr] 8  | / fn panic(info: &PanicInfo) -> ! {
[INFO] [stderr] 9  | |     println!("{}", info);
[INFO] [stderr] 10 | |     loop {}
[INFO] [stderr] 11 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: the lang item is first defined in crate `std` (which `test` depends on)
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error; 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/main.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     panic!("Panic message!");
[INFO] [stderr]    |     ------------------------- any code following this expression is unreachable
[INFO] [stderr] 19 | 
[INFO] [stderr] 20 |     loop {}
[INFO] [stderr]    |     ^^^^^^^ unreachable expression
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `zos`.
[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: aborting due to previous error; 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0152`.
[INFO] [stderr] error: could not compile `zos`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "dd52dcfa9caa3c8aa21c8dd6a9dc91ef7c713dc6c0df9d3d4e29faf31ce88c1d"`
[INFO] running `"docker" "rm" "-f" "dd52dcfa9caa3c8aa21c8dd6a9dc91ef7c713dc6c0df9d3d4e29faf31ce88c1d"`
[INFO] [stdout] dd52dcfa9caa3c8aa21c8dd6a9dc91ef7c713dc6c0df9d3d4e29faf31ce88c1d