[INFO] cloning repository AleVul/kernel_playground
[INFO] running `"git" "clone" "--bare" "git://github.com/AleVul/kernel_playground.git" "work/cache/sources/gh/AleVul/kernel_playground"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/AleVul/kernel_playground'...
[INFO] running `"git" "clone" "work/cache/sources/gh/AleVul/kernel_playground" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/AleVul/kernel_playground"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/AleVul/kernel_playground'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/AleVul/kernel_playground" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/AleVul/kernel_playground"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/AleVul/kernel_playground'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b3533b7dfcf17348ea8213a7e11e2889d5dcb5fe
[INFO] sha for GitHub repo AleVul/kernel_playground: b3533b7dfcf17348ea8213a7e11e2889d5dcb5fe
[INFO] validating manifest of AleVul/kernel_playground on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of AleVul/kernel_playground on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing AleVul/kernel_playground
[INFO] finished frobbing AleVul/kernel_playground
[INFO] frobbed toml for AleVul/kernel_playground written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/AleVul/kernel_playground/Cargo.toml
[INFO] started frobbing AleVul/kernel_playground
[INFO] finished frobbing AleVul/kernel_playground
[INFO] frobbed toml for AleVul/kernel_playground written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/AleVul/kernel_playground/Cargo.toml
[INFO] crate AleVul/kernel_playground already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking AleVul/kernel_playground against try#8f81d0bf6baf07b92f1246696722485c4ca0b049 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-2/try#8f81d0bf6baf07b92f1246696722485c4ca0b049:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/AleVul/kernel_playground:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 0dff9050808567cb44afd405bf38ae61c88ce2f3d1411d82c16d974dc296043d
[INFO] running `"docker" "start" "-a" "0dff9050808567cb44afd405bf38ae61c88ce2f3d1411d82c16d974dc296043d"`
[INFO] [stderr]    Compiling remove_dir_all v0.5.2
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]     Checking cast v0.2.2
[INFO] [stderr]     Checking zero v0.1.2
[INFO] [stderr]     Checking bit_field v0.9.0
[INFO] [stderr]     Checking ux v0.1.3
[INFO] [stderr] error[E0463]: can't find crate for `core`
[INFO] [stderr]   |
[INFO] [stderr]   = note: the `x86_64-kernel_playground-295194697943687168` target may not be installed
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error[E0463]: can't find crate for `core`
[INFO] [stderr]   |
[INFO] [stderr]   = note: the `x86_64-kernel_playground-295194697943687168` target may not be installed
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: Could not compile `bit_field`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `zero`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0463]: can't find crate for `core`
[INFO] [stderr]   |
[INFO] [stderr]   = note: the `x86_64-kernel_playground-295194697943687168` target may not be installed
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: Could not compile `nodrop`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0463]: can't find crate for `core`
[INFO] [stderr]   |
[INFO] [stderr]   = note: the `x86_64-kernel_playground-295194697943687168` target may not be installed
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error[E0463]: can't find crate for `core`
[INFO] [stderr] error: Could not compile `nodrop`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr]   |
[INFO] [stderr]   = note: the `x86_64-kernel_playground-295194697943687168` target may not be installed
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error[E0463]: can't find crate for `core`
[INFO] [stderr] error: Could not compile `ux`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0463]: can't find crate for `core`
[INFO] [stderr]   |
[INFO] [stderr]   = note: the `x86_64-kernel_playground-295194697943687168` target may not be installed
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr]   |
[INFO] [stderr]   = note: the `x86_64-kernel_playground-295194697943687168` target may not be installed
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: Could not compile `zero`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `cast`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "0dff9050808567cb44afd405bf38ae61c88ce2f3d1411d82c16d974dc296043d"`
[INFO] running `"docker" "rm" "-f" "0dff9050808567cb44afd405bf38ae61c88ce2f3d1411d82c16d974dc296043d"`
[INFO] [stdout] 0dff9050808567cb44afd405bf38ae61c88ce2f3d1411d82c16d974dc296043d