[INFO] updating cached repository bmdelacruz/blog-os
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/bmdelacruz/blog-os
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/bmdelacruz/blog-os" "work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/bmdelacruz/blog-os"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/bmdelacruz/blog-os'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/bmdelacruz/blog-os" "work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/bmdelacruz/blog-os"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/bmdelacruz/blog-os'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8865886c90a038f5e21075858407fe4a85707cc1
[INFO] sha for GitHub repo bmdelacruz/blog-os: 8865886c90a038f5e21075858407fe4a85707cc1
[INFO] validating manifest of bmdelacruz/blog-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 bmdelacruz/blog-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 bmdelacruz/blog-os
[INFO] finished frobbing bmdelacruz/blog-os
[INFO] frobbed toml for bmdelacruz/blog-os written to work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/bmdelacruz/blog-os/Cargo.toml
[INFO] started frobbing bmdelacruz/blog-os
[INFO] finished frobbing bmdelacruz/blog-os
[INFO] frobbed toml for bmdelacruz/blog-os written to work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/bmdelacruz/blog-os/Cargo.toml
[INFO] crate bmdelacruz/blog-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 bmdelacruz/blog-os against master#e305df1846a6d985315917ae0c81b74af8b4e641 for pr-60039-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039-1/worker-1/master#e305df1846a6d985315917ae0c81b74af8b4e641:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/bmdelacruz/blog-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" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c738a8cdc32fa9f2af8daa8042ed06065af6e492847284c30eda2bb8d12b55ca
[INFO] running `"docker" "start" "-a" "c738a8cdc32fa9f2af8daa8042ed06065af6e492847284c30eda2bb8d12b55ca"`
[INFO] [stderr]     Checking spin v0.5.0
[INFO] [stderr]     Checking volatile v0.2.6
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking x86_64 v0.3.6
[INFO] [stderr]     Checking uart_16550 v0.1.0
[INFO] [stderr]    Compiling raw-cpuid v6.1.0
[INFO] [stderr]     Checking fixedvec v0.2.3
[INFO] [stderr]     Checking bootloader v0.4.0
[INFO] [stderr]     Checking x86_64 v0.5.2
[INFO] [stderr]     Checking blog_os v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: the item `Mutex` is imported redundantly
[INFO] [stderr]   --> src/interrupts.rs:81:7
[INFO] [stderr]    |
[INFO] [stderr] 7  | use spin::Mutex;
[INFO] [stderr]    |     ----------- the item `Mutex` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 81 |   use spin::Mutex;
[INFO] [stderr]    |       ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Mutex` is imported redundantly
[INFO] [stderr]   --> src/interrupts.rs:81:7
[INFO] [stderr]    |
[INFO] [stderr] 7  | use spin::Mutex;
[INFO] [stderr]    |     ----------- the item `Mutex` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 81 |   use spin::Mutex;
[INFO] [stderr]    |       ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `blog_os::serial_println`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use blog_os::serial_println;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Mutex` is imported redundantly
[INFO] [stderr]   --> src/interrupts.rs:81:7
[INFO] [stderr]    |
[INFO] [stderr] 7  | use spin::Mutex;
[INFO] [stderr]    |     ----------- the item `Mutex` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 81 |   use spin::Mutex;
[INFO] [stderr]    |       ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Box` is imported redundantly
[INFO] [stderr]    --> src/vga_buffer.rs:171:9
[INFO] [stderr]     |
[INFO] [stderr] 171 |     use std::boxed::Box;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.16s
[INFO] running `"docker" "inspect" "c738a8cdc32fa9f2af8daa8042ed06065af6e492847284c30eda2bb8d12b55ca"`
[INFO] running `"docker" "rm" "-f" "c738a8cdc32fa9f2af8daa8042ed06065af6e492847284c30eda2bb8d12b55ca"`
[INFO] [stdout] c738a8cdc32fa9f2af8daa8042ed06065af6e492847284c30eda2bb8d12b55ca