[INFO] updating cached repository quartiq/queenmod
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/quartiq/queenmod
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/quartiq/queenmod" "work/ex/beta-1.38-1/sources/1.37.0/gh/quartiq/queenmod"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/quartiq/queenmod'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/quartiq/queenmod" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/quartiq/queenmod"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/quartiq/queenmod'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9b3b340f0eedb0e0c89d7abf28e038113a3fb7cf
[INFO] sha for GitHub repo quartiq/queenmod: 9b3b340f0eedb0e0c89d7abf28e038113a3fb7cf
[INFO] validating manifest of quartiq/queenmod on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of quartiq/queenmod on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing quartiq/queenmod
[INFO] finished frobbing quartiq/queenmod
[INFO] frobbed toml for quartiq/queenmod written to work/ex/beta-1.38-1/sources/1.37.0/gh/quartiq/queenmod/Cargo.toml
[INFO] started frobbing quartiq/queenmod
[INFO] finished frobbing quartiq/queenmod
[INFO] frobbed toml for quartiq/queenmod written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/quartiq/queenmod/Cargo.toml
[INFO] crate quartiq/queenmod already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing quartiq/queenmod against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/quartiq/queenmod:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] baeab1f848c53172a55f69ddf0026f63232685f9ffa4f314803bce64038e3d8b
[INFO] running `"docker" "start" "-a" "baeab1f848c53172a55f69ddf0026f63232685f9ffa4f314803bce64038e3d8b"`
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling libc v0.2.48
[INFO] [stderr]    Compiling cc v1.0.29
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling matches v0.1.8
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling serde v1.0.87
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]    Compiling rand_core v0.4.0
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling vcell v0.1.0
[INFO] [stderr] error[E0463]: can't find crate for `core`
[INFO] [stderr]   |
[INFO] [stderr]   = note: the `thumbv7em-none-eabihf` 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 `vcell`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "baeab1f848c53172a55f69ddf0026f63232685f9ffa4f314803bce64038e3d8b"`
[INFO] running `"docker" "rm" "-f" "baeab1f848c53172a55f69ddf0026f63232685f9ffa4f314803bce64038e3d8b"`
[INFO] [stdout] baeab1f848c53172a55f69ddf0026f63232685f9ffa4f314803bce64038e3d8b