[INFO] cloning repository koalatux/riscv-rust-mfrc522
[INFO] running `"git" "clone" "--bare" "git://github.com/koalatux/riscv-rust-mfrc522.git" "work/cache/sources/gh/koalatux/riscv-rust-mfrc522"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/koalatux/riscv-rust-mfrc522'...
[INFO] running `"git" "clone" "work/cache/sources/gh/koalatux/riscv-rust-mfrc522" "work/ex/beta-1.37-6/sources/1.36.0/gh/koalatux/riscv-rust-mfrc522"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/koalatux/riscv-rust-mfrc522'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/koalatux/riscv-rust-mfrc522" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/koalatux/riscv-rust-mfrc522"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/koalatux/riscv-rust-mfrc522'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 56b6b7e17956a73a13ad494f48c13ad9a4140c6e
[INFO] sha for GitHub repo koalatux/riscv-rust-mfrc522: 56b6b7e17956a73a13ad494f48c13ad9a4140c6e
[INFO] validating manifest of koalatux/riscv-rust-mfrc522 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of koalatux/riscv-rust-mfrc522 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing koalatux/riscv-rust-mfrc522
[INFO] finished frobbing koalatux/riscv-rust-mfrc522
[INFO] frobbed toml for koalatux/riscv-rust-mfrc522 written to work/ex/beta-1.37-6/sources/1.36.0/gh/koalatux/riscv-rust-mfrc522/Cargo.toml
[INFO] started frobbing koalatux/riscv-rust-mfrc522
[INFO] finished frobbing koalatux/riscv-rust-mfrc522
[INFO] frobbed toml for koalatux/riscv-rust-mfrc522 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/koalatux/riscv-rust-mfrc522/Cargo.toml
[INFO] crate koalatux/riscv-rust-mfrc522 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hifive1 v0.6.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing koalatux/riscv-rust-mfrc522 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/koalatux/riscv-rust-mfrc522:/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=warn" "-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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] cb56a5610fd28a2527154adcbd75384b804c377d3ab0678df4df2def26497755
[INFO] running `"docker" "start" "-a" "cb56a5610fd28a2527154adcbd75384b804c377d3ab0678df4df2def26497755"`
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling syn v0.15.29
[INFO] [stderr]    Compiling riscv v0.5.2
[INFO] [stderr]    Compiling riscv-rt v0.5.0
[INFO] [stderr]    Compiling bit_field v0.9.0
[INFO] [stderr]    Compiling e310x v0.5.2
[INFO] [stderr]    Compiling r0 v0.2.2
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr] error[E0463]: can't find crate for `core`
[INFO] [stderr]   |
[INFO] [stderr]   = note: the `riscv32imac-unknown-none-elf` target may not be installed
[INFO] [stderr] 
[INFO] [stderr] error[E0463]: can't find crate for `core`
[INFO] [stderr]   |
[INFO] [stderr]   = note: the `riscv32imac-unknown-none-elf` target may not be installed
[INFO] [stderr] 
[INFO] [stderr] error[E0463]: can't find crate for `core`
[INFO] [stderr]   |
[INFO] [stderr]   = note: the `riscv32imac-unknown-none-elf` 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 `void`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `r0`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `bit_field`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "cb56a5610fd28a2527154adcbd75384b804c377d3ab0678df4df2def26497755"`
[INFO] running `"docker" "rm" "-f" "cb56a5610fd28a2527154adcbd75384b804c377d3ab0678df4df2def26497755"`
[INFO] [stdout] cb56a5610fd28a2527154adcbd75384b804c377d3ab0678df4df2def26497755