[INFO] updating cached repository Lucas-Palomo/link_os
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Lucas-Palomo/link_os
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Lucas-Palomo/link_os" "work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/Lucas-Palomo/link_os"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/Lucas-Palomo/link_os'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Lucas-Palomo/link_os" "work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/Lucas-Palomo/link_os"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/Lucas-Palomo/link_os'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d187ce51b16bfb496af2328c943f2408b8a1b03f
[INFO] sha for GitHub repo Lucas-Palomo/link_os: d187ce51b16bfb496af2328c943f2408b8a1b03f
[INFO] validating manifest of Lucas-Palomo/link_os on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Lucas-Palomo/link_os on toolchain try#99a7498759a22b5684caf798a98b7e90ad9d2443
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Lucas-Palomo/link_os
[INFO] finished frobbing Lucas-Palomo/link_os
[INFO] frobbed toml for Lucas-Palomo/link_os written to work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/Lucas-Palomo/link_os/Cargo.toml
[INFO] started frobbing Lucas-Palomo/link_os
[INFO] finished frobbing Lucas-Palomo/link_os
[INFO] frobbed toml for Lucas-Palomo/link_os written to work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/Lucas-Palomo/link_os/Cargo.toml
[INFO] crate Lucas-Palomo/link_os already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking Lucas-Palomo/link_os against try#99a7498759a22b5684caf798a98b7e90ad9d2443 for pr-60039-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039-1/worker-5/try#99a7498759a22b5684caf798a98b7e90ad9d2443:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/Lucas-Palomo/link_os:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 134dab418c963ae8532113767fed1cbc8d7bef5d33fa5508a2668ad1310b19b8
[INFO] running `"docker" "start" "-a" "134dab418c963ae8532113767fed1cbc8d7bef5d33fa5508a2668ad1310b19b8"`
[INFO] [stderr]    Compiling rand v0.4.5
[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 v0.3.12
[INFO] [stderr]     Checking link_os v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: constant item is never used: `BFHEIGHT`
[INFO] [stderr]  --> src/kernel/output.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | const BFHEIGHT: usize = 25;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `character`
[INFO] [stderr]  --> src/kernel/output.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     character: u8,
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `color`
[INFO] [stderr]  --> src/kernel/output.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     color: u8,
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0152]: duplicate lang item found: `panic_impl`.
[INFO] [stderr]   --> src/main.rs:26:1
[INFO] [stderr]    |
[INFO] [stderr] 26 | / fn panic(_error: &PanicInfo) -> ! {
[INFO] [stderr] 27 | |     loop {}
[INFO] [stderr] 28 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: first defined in crate `std`.
[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 `link_os`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "134dab418c963ae8532113767fed1cbc8d7bef5d33fa5508a2668ad1310b19b8"`
[INFO] running `"docker" "rm" "-f" "134dab418c963ae8532113767fed1cbc8d7bef5d33fa5508a2668ad1310b19b8"`
[INFO] [stdout] 134dab418c963ae8532113767fed1cbc8d7bef5d33fa5508a2668ad1310b19b8