[INFO] updating cached repository myomi/rust_os
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/myomi/rust_os
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/myomi/rust_os" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/myomi/rust_os"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/myomi/rust_os'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/myomi/rust_os" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/myomi/rust_os"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/myomi/rust_os'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1d4aa9bab043b850d96327d1e9c227dc2a40a420
[INFO] sha for GitHub repo myomi/rust_os: 1d4aa9bab043b850d96327d1e9c227dc2a40a420
[INFO] validating manifest of myomi/rust_os on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of myomi/rust_os on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing myomi/rust_os
[INFO] finished frobbing myomi/rust_os
[INFO] frobbed toml for myomi/rust_os written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/myomi/rust_os/Cargo.toml
[INFO] started frobbing myomi/rust_os
[INFO] finished frobbing myomi/rust_os
[INFO] frobbed toml for myomi/rust_os written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/myomi/rust_os/Cargo.toml
[INFO] crate myomi/rust_os already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking myomi/rust_os against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-1/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/myomi/rust_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" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 677b88be2b0240bc5c67d7ad12eac2ee2b5a9f5815f5f3b1c4e6a1f4a9fd9e3d
[INFO] running `"docker" "start" "-a" "677b88be2b0240bc5c67d7ad12eac2ee2b5a9f5815f5f3b1c4e6a1f4a9fd9e3d"`
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]    Compiling remove_dir_all v0.5.2
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]    Compiling llvm-tools v0.1.1
[INFO] [stderr]     Checking os_bootinfo v0.2.1
[INFO] [stderr] error[E0463]: can't find crate for `core`
[INFO] [stderr] error[E0463]: can't find crate for `core`
[INFO] [stderr]   |
[INFO] [stderr]   = note: the `x86_64-rust_os-2066808710704056858` target may not be installed
[INFO] [stderr] 
[INFO] [stderr]   |
[INFO] [stderr]   = note: the `x86_64-rust_os-2066808710704056858` target may not be installed
[INFO] [stderr] 
[INFO] [stderr] error[E0463]: can't find crate for `core`
[INFO] [stderr]   |
[INFO] [stderr]   = note: the `x86_64-rust_os-2066808710704056858` target may not be installed
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: Could not compile `os_bootinfo`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `nodrop`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `nodrop`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "677b88be2b0240bc5c67d7ad12eac2ee2b5a9f5815f5f3b1c4e6a1f4a9fd9e3d"`
[INFO] running `"docker" "rm" "-f" "677b88be2b0240bc5c67d7ad12eac2ee2b5a9f5815f5f3b1c4e6a1f4a9fd9e3d"`
[INFO] [stdout] 677b88be2b0240bc5c67d7ad12eac2ee2b5a9f5815f5f3b1c4e6a1f4a9fd9e3d