[INFO] updating cached repository Christophorus3/c_os
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Christophorus3/c_os
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Christophorus3/c_os" "work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/Christophorus3/c_os"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/Christophorus3/c_os'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Christophorus3/c_os" "work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/Christophorus3/c_os"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/Christophorus3/c_os'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e0684c540f940dfc1c441315aaf30bb695c8a69c
[INFO] sha for GitHub repo Christophorus3/c_os: e0684c540f940dfc1c441315aaf30bb695c8a69c
[INFO] validating manifest of Christophorus3/c_os on toolchain master#efe2f32a6b8217425f361ec7c206910c611c03ee
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Christophorus3/c_os on toolchain try#78b0bd8441ef961f6475e3d47fe3bca38cb83432
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Christophorus3/c_os
[INFO] finished frobbing Christophorus3/c_os
[INFO] frobbed toml for Christophorus3/c_os written to work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/Christophorus3/c_os/Cargo.toml
[INFO] started frobbing Christophorus3/c_os
[INFO] finished frobbing Christophorus3/c_os
[INFO] frobbed toml for Christophorus3/c_os written to work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/Christophorus3/c_os/Cargo.toml
[INFO] crate Christophorus3/c_os already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking Christophorus3/c_os against master#efe2f32a6b8217425f361ec7c206910c611c03ee for pr-60039
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039/worker-0/master#efe2f32a6b8217425f361ec7c206910c611c03ee:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/Christophorus3/c_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" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a4fc05ef21d86b80badfe2b9c8d1f77c0e7c751d272ea93c029074b3080eda70
[INFO] running `"docker" "start" "-a" "a4fc05ef21d86b80badfe2b9c8d1f77c0e7c751d272ea93c029074b3080eda70"`
[INFO] [stderr]     Checking array-init v0.0.4
[INFO] [stderr]    Compiling raw-cpuid v6.1.0
[INFO] [stderr]    Compiling skeptic v0.5.0
[INFO] [stderr]    Compiling fixedvec v0.2.3
[INFO] [stderr]     Checking bootloader v0.4.0
[INFO] [stderr]     Checking x86_64 v0.5.3
[INFO] [stderr]     Checking c_os v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: the item `Box` is imported redundantly
[INFO] [stderr]    --> src/vga_buffer.rs:155:13
[INFO] [stderr]     |
[INFO] [stderr] 155 |         use std::boxed::Box;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Checking x86_64 v0.3.6
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.13s
[INFO] running `"docker" "inspect" "a4fc05ef21d86b80badfe2b9c8d1f77c0e7c751d272ea93c029074b3080eda70"`
[INFO] running `"docker" "rm" "-f" "a4fc05ef21d86b80badfe2b9c8d1f77c0e7c751d272ea93c029074b3080eda70"`
[INFO] [stdout] a4fc05ef21d86b80badfe2b9c8d1f77c0e7c751d272ea93c029074b3080eda70