[INFO] cloning repository https://github.com/BearzRobotics/fenrirs_os
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BearzRobotics/fenrirs_os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBearzRobotics%2Ffenrirs_os"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBearzRobotics%2Ffenrirs_os'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ec7ef6a7014362254dd44b7cd41b07fbb81f206d
[INFO] checking BearzRobotics/fenrirs_os against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBearzRobotics%2Ffenrirs_os" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BearzRobotics/fenrirs_os on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/BearzRobotics/fenrirs_os
[INFO] finished tweaking git repo https://github.com/BearzRobotics/fenrirs_os
[INFO] tweaked toml for git repo https://github.com/BearzRobotics/fenrirs_os written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/BearzRobotics/fenrirs_os already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "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] c0995737f553728a2a56e53a5e55a11e59aefe1e83ff29ce9780a9890e7a11ff
[INFO] running `"docker" "start" "-a" "c0995737f553728a2a56e53a5e55a11e59aefe1e83ff29ce9780a9890e7a11ff"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling bootloader v0.8.0
[INFO] [stderr]     Checking spin v0.5.1
[INFO] [stderr]     Checking volatile v0.2.6
[INFO] [stderr]     Checking spin v0.4.10
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking fenrirs_os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: the item `Write` is imported redundantly
[INFO] [stderr]    --> src/vga_buffer.rs:152:9
[INFO] [stderr]     |
[INFO] [stderr] 3   | use core::fmt::Write;
[INFO] [stderr]     |     ---------------- the item `Write` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 152 |     use core::fmt::Write;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/main.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     panic!("Some panic message");
[INFO] [stderr]    |     ----------------------------- any code following this expression is unreachable
[INFO] [stderr] 21 |     loop {}
[INFO] [stderr]    |     ^^^^^^^ unreachable expression
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::fmt::Write`
[INFO] [stderr]  --> src/vga_buffer.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use core::fmt::Write;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Write` is imported redundantly
[INFO] [stderr]    --> src/vga_buffer.rs:152:9
[INFO] [stderr]     |
[INFO] [stderr] 3   | use core::fmt::Write;
[INFO] [stderr]     |     ---------------- the item `Write` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 152 |     use core::fmt::Write;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0152]: duplicate lang item found: `panic_impl`.
[INFO] [stderr]   --> src/main.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | / fn panic(info: &PanicInfo) -> ! {
[INFO] [stderr] 12 | |     println!("{}", info);
[INFO] [stderr] 13 | |     loop {}
[INFO] [stderr] 14 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: first defined in crate `std` (which `test` depends on).
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/main.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     panic!("Some panic message");
[INFO] [stderr]    |     ----------------------------- any code following this expression is unreachable
[INFO] [stderr] 21 |     loop {}
[INFO] [stderr]    |     ^^^^^^^ unreachable expression
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::fmt::Write`
[INFO] [stderr]  --> src/vga_buffer.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use core::fmt::Write;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0152`.
[INFO] [stderr] error: could not compile `fenrirs_os`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "c0995737f553728a2a56e53a5e55a11e59aefe1e83ff29ce9780a9890e7a11ff"`
[INFO] running `"docker" "rm" "-f" "c0995737f553728a2a56e53a5e55a11e59aefe1e83ff29ce9780a9890e7a11ff"`
[INFO] [stdout] c0995737f553728a2a56e53a5e55a11e59aefe1e83ff29ce9780a9890e7a11ff