[INFO] updating cached repository pjzhong/rust-os
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/pjzhong/rust-os
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/pjzhong/rust-os" "work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/pjzhong/rust-os"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/pjzhong/rust-os'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/pjzhong/rust-os" "work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/pjzhong/rust-os"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/pjzhong/rust-os'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] df9cb8378f07cddcb038e346e76c483a72a172db
[INFO] sha for GitHub repo pjzhong/rust-os: df9cb8378f07cddcb038e346e76c483a72a172db
[INFO] validating manifest of pjzhong/rust-os on toolchain master#39401465da4ce27aeeb2c2a26133ac35c63aa515
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of pjzhong/rust-os on toolchain try#f45cc3094ee337acd688771b9234318046b0572d
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing pjzhong/rust-os
[INFO] finished frobbing pjzhong/rust-os
[INFO] frobbed toml for pjzhong/rust-os written to work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/pjzhong/rust-os/Cargo.toml
[INFO] started frobbing pjzhong/rust-os
[INFO] finished frobbing pjzhong/rust-os
[INFO] frobbed toml for pjzhong/rust-os written to work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/pjzhong/rust-os/Cargo.toml
[INFO] crate pjzhong/rust-os already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking pjzhong/rust-os against master#39401465da4ce27aeeb2c2a26133ac35c63aa515 for pr-60914
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60914/worker-3/master#39401465da4ce27aeeb2c2a26133ac35c63aa515:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/pjzhong/rust-os:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 84af50242627305773b195184234cdb02aa26a6c4ed5f9bad6cadd663c6aee50
[INFO] running `"docker" "start" "-a" "84af50242627305773b195184234cdb02aa26a6c4ed5f9bad6cadd663c6aee50"`
[INFO] [stderr]    Compiling llvm-tools v0.1.1
[INFO] [stderr]     Checking spin v0.5.0
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking x86_64 v0.3.6
[INFO] [stderr]    Compiling raw-cpuid v6.1.0
[INFO] [stderr]    Compiling skeptic v0.5.0
[INFO] [stderr]    Compiling bootloader v0.5.3
[INFO] [stderr]    Compiling fixedvec v0.2.3
[INFO] [stderr]     Checking x86_64 v0.5.3
[INFO] [stderr]     Checking rust_os v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: the item `Box` is imported redundantly
[INFO] [stderr]    --> src/vga_buffer.rs:157:13
[INFO] [stderr]     |
[INFO] [stderr] 157 |         use std::boxed::Box;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `structures::paging::PageTable`
[INFO] [stderr]  --> src/bin/test-page-implementation.rs:9:14
[INFO] [stderr]   |
[INFO] [stderr] 9 | use x86_64::{structures::paging::PageTable, VirtAddr};
[INFO] [stderr]   |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `structures::paging::PageTable`
[INFO] [stderr]  --> src/main.rs:9:14
[INFO] [stderr]   |
[INFO] [stderr] 9 | use x86_64::{structures::paging::PageTable, VirtAddr};
[INFO] [stderr]   |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unknown lint: `unused_omports`
[INFO] [stderr]  --> src/bin/test-basic-boot.rs:3:25
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![cfg_attr(test, allow(unused_omports))]
[INFO] [stderr]   |                         ^^^^^^^^^^^^^^ help: did you mean: `unused_imports`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unknown_lints)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unknown lint: `unused_macors`
[INFO] [stderr]  --> src/bin/test-exception-breakpoint.rs:3:36
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![cfg_attr(test, allow(dead_code, unused_macors, unused_imports))]
[INFO] [stderr]   |                                    ^^^^^^^^^^^^^ help: did you mean: `unused_macros`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unknown_lints)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unknown lint: `unused_omports`
[INFO] [stderr]  --> src/bin/test-page-implementation.rs:3:25
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![cfg_attr(test, allow(unused_omports))]
[INFO] [stderr]   |                         ^^^^^^^^^^^^^^ help: did you mean: `unused_imports`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unknown_lints)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::panic::PanicInfo`
[INFO] [stderr]  --> src/bin/test-basic-boot.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use core::panic::PanicInfo;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `exit_qemu`, `serial_println`
[INFO] [stderr]  --> src/bin/test-basic-boot.rs:6:15
[INFO] [stderr]   |
[INFO] [stderr] 6 | use rust_os::{exit_qemu, serial_println};
[INFO] [stderr]   |               ^^^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BootInfo`
[INFO] [stderr]  --> src/bin/test-page-implementation.rs:5:31
[INFO] [stderr]   |
[INFO] [stderr] 5 | use bootloader::{entry_point, BootInfo};
[INFO] [stderr]   |                               ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::panic::PanicInfo`
[INFO] [stderr]  --> src/bin/test-page-implementation.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use core::panic::PanicInfo;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rust_os::println`
[INFO] [stderr]  --> src/bin/test-page-implementation.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use rust_os::println;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `exit_qemu`, `serial_println`
[INFO] [stderr]  --> src/bin/test-page-implementation.rs:8:15
[INFO] [stderr]   |
[INFO] [stderr] 8 | use rust_os::{exit_qemu, serial_println};
[INFO] [stderr]   |               ^^^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `VirtAddr`, `structures::paging::PageTable`
[INFO] [stderr]  --> src/bin/test-page-implementation.rs:9:14
[INFO] [stderr]   |
[INFO] [stderr] 9 | use x86_64::{structures::paging::PageTable, VirtAddr};
[INFO] [stderr]   |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.61s
[INFO] running `"docker" "inspect" "84af50242627305773b195184234cdb02aa26a6c4ed5f9bad6cadd663c6aee50"`
[INFO] running `"docker" "rm" "-f" "84af50242627305773b195184234cdb02aa26a6c4ed5f9bad6cadd663c6aee50"`
[INFO] [stdout] 84af50242627305773b195184234cdb02aa26a6c4ed5f9bad6cadd663c6aee50