Dec 19 10:15:03.481 INFO checking rep-nop/bismuth against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 10:15:03.482 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-7/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/rep-nop/bismuth:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 10:15:03.894 INFO [stdout] 3bd966b91a6eb88df71dc90b0c950e310bb199e9d1c0d5c3c464e1a44aa56902
Dec 19 10:15:03.896 INFO running `"docker" "start" "-a" "3bd966b91a6eb88df71dc90b0c950e310bb199e9d1c0d5c3c464e1a44aa56902"`
Dec 19 10:15:05.356 INFO [stderr]    Compiling semver-parser v0.7.0
Dec 19 10:15:05.356 INFO [stderr]    Compiling proc-macro2 v0.4.24
Dec 19 10:15:05.356 INFO [stderr]    Compiling unicode-xid v0.1.0
Dec 19 10:15:05.356 INFO [stderr]    Compiling rand_core v0.3.0
Dec 19 10:15:05.356 INFO [stderr]    Compiling cortex-m v0.5.8
Dec 19 10:15:05.356 INFO [stderr]     Checking vcell v0.1.0
Dec 19 10:15:05.356 INFO [stderr]    Compiling cortex-m-rt v0.6.6
Dec 19 10:15:05.356 INFO [stderr]    Compiling cortex-m-semihosting v0.3.2
Dec 19 10:15:05.760 INFO [stderr] error[E0463]: can't find crate for `core`
Dec 19 10:15:05.782 INFO [stderr]   |
Dec 19 10:15:05.782 INFO [stderr]   = note: the `thumbv7em-none-eabihf` target may not be installed
Dec 19 10:15:05.782 INFO [stderr] 
Dec 19 10:15:05.782 INFO [stderr] error: aborting due to previous error
Dec 19 10:15:05.782 INFO [stderr] 
Dec 19 10:15:05.782 INFO [stderr] For more information about this error, try `rustc --explain E0463`.
Dec 19 10:15:05.812 INFO [stderr] error: Could not compile `vcell`.
Dec 19 10:15:05.812 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 19 10:15:08.052 INFO [stderr] error: build failed
Dec 19 10:15:08.542 INFO running `"docker" "inspect" "3bd966b91a6eb88df71dc90b0c950e310bb199e9d1c0d5c3c464e1a44aa56902"`
Dec 19 10:15:08.888 INFO running `"docker" "rm" "-f" "3bd966b91a6eb88df71dc90b0c950e310bb199e9d1c0d5c3c464e1a44aa56902"`
Dec 19 10:15:09.212 INFO [stdout] 3bd966b91a6eb88df71dc90b0c950e310bb199e9d1c0d5c3c464e1a44aa56902