[INFO] updating cached repository CraigHarley/MinimalRustKernel
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/CraigHarley/MinimalRustKernel
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/CraigHarley/MinimalRustKernel" "work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/CraigHarley/MinimalRustKernel"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/CraigHarley/MinimalRustKernel'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/CraigHarley/MinimalRustKernel" "work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/CraigHarley/MinimalRustKernel"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/CraigHarley/MinimalRustKernel'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ab128cda5cf19b96c3a7b7e61728477b6f861df3
[INFO] sha for GitHub repo CraigHarley/MinimalRustKernel: ab128cda5cf19b96c3a7b7e61728477b6f861df3
[INFO] validating manifest of CraigHarley/MinimalRustKernel 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 CraigHarley/MinimalRustKernel 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 CraigHarley/MinimalRustKernel
[INFO] finished frobbing CraigHarley/MinimalRustKernel
[INFO] frobbed toml for CraigHarley/MinimalRustKernel written to work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/CraigHarley/MinimalRustKernel/Cargo.toml
[INFO] started frobbing CraigHarley/MinimalRustKernel
[INFO] finished frobbing CraigHarley/MinimalRustKernel
[INFO] frobbed toml for CraigHarley/MinimalRustKernel written to work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/CraigHarley/MinimalRustKernel/Cargo.toml
[INFO] crate CraigHarley/MinimalRustKernel 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] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking CraigHarley/MinimalRustKernel against try#f45cc3094ee337acd688771b9234318046b0572d for pr-60914
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60914/worker-4/try#f45cc3094ee337acd688771b9234318046b0572d:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/CraigHarley/MinimalRustKernel:/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" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] de90096b789a06ff912947adefaee020dba26683399c28ec9718fd3fad7c897f
[INFO] running `"docker" "start" "-a" "de90096b789a06ff912947adefaee020dba26683399c28ec9718fd3fad7c897f"`
[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 blog_os v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: the item `Box` is imported redundantly
[INFO] [stderr]   --> src/vga_buffer/test.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     use std::boxed::Box;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.55s
[INFO] running `"docker" "inspect" "de90096b789a06ff912947adefaee020dba26683399c28ec9718fd3fad7c897f"`
[INFO] running `"docker" "rm" "-f" "de90096b789a06ff912947adefaee020dba26683399c28ec9718fd3fad7c897f"`
[INFO] [stdout] de90096b789a06ff912947adefaee020dba26683399c28ec9718fd3fad7c897f