[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-60261/sources/master#1891bfa80364eead426517c68de6947b7692e2de/gh/Christophorus3/c_os"`
[INFO] [stderr] Cloning into 'work/ex/pr-60261/sources/master#1891bfa80364eead426517c68de6947b7692e2de/gh/Christophorus3/c_os'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Christophorus3/c_os" "work/ex/pr-60261/sources/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a/gh/Christophorus3/c_os"`
[INFO] [stderr] Cloning into 'work/ex/pr-60261/sources/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a/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#1891bfa80364eead426517c68de6947b7692e2de
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1891bfa80364eead426517c68de6947b7692e2de-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Christophorus3/c_os on toolchain try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bfdcf6db3afcce5fe4013023cfa8ba359c5d527a-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-60261/sources/master#1891bfa80364eead426517c68de6947b7692e2de/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-60261/sources/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a/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" "+1891bfa80364eead426517c68de6947b7692e2de-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bfdcf6db3afcce5fe4013023cfa8ba359c5d527a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking Christophorus3/c_os against try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a for pr-60261
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60261/worker-1/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60261/sources/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a/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" "+bfdcf6db3afcce5fe4013023cfa8ba359c5d527a-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 7cfc5b6f6e603989f7df81926c8c7c9611ce8c5cd9263dc13d0d750d6977b9a3
[INFO] running `"docker" "start" "-a" "7cfc5b6f6e603989f7df81926c8c7c9611ce8c5cd9263dc13d0d750d6977b9a3"`
[INFO] [stderr]     Checking fixedvec v0.2.3
[INFO] [stderr]     Checking c_os v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Checking bootloader v0.4.0
[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]     Finished dev [unoptimized + debuginfo] target(s) in 3.14s
[INFO] running `"docker" "inspect" "7cfc5b6f6e603989f7df81926c8c7c9611ce8c5cd9263dc13d0d750d6977b9a3"`
[INFO] running `"docker" "rm" "-f" "7cfc5b6f6e603989f7df81926c8c7c9611ce8c5cd9263dc13d0d750d6977b9a3"`
[INFO] [stdout] 7cfc5b6f6e603989f7df81926c8c7c9611ce8c5cd9263dc13d0d750d6977b9a3