[INFO] updating cached repository tl8roy/stm32f302r8_rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/tl8roy/stm32f302r8_rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/tl8roy/stm32f302r8_rust" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/tl8roy/stm32f302r8_rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/tl8roy/stm32f302r8_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tl8roy/stm32f302r8_rust" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/tl8roy/stm32f302r8_rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/tl8roy/stm32f302r8_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0b2e694ce6d6835cca465c215db33f13ac689211
[INFO] sha for GitHub repo tl8roy/stm32f302r8_rust: 0b2e694ce6d6835cca465c215db33f13ac689211
[INFO] validating manifest of tl8roy/stm32f302r8_rust 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 tl8roy/stm32f302r8_rust 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 tl8roy/stm32f302r8_rust
[INFO] finished frobbing tl8roy/stm32f302r8_rust
[INFO] frobbed toml for tl8roy/stm32f302r8_rust written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/tl8roy/stm32f302r8_rust/Cargo.toml
[INFO] started frobbing tl8roy/stm32f302r8_rust
[INFO] finished frobbing tl8roy/stm32f302r8_rust
[INFO] frobbed toml for tl8roy/stm32f302r8_rust written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/tl8roy/stm32f302r8_rust/Cargo.toml
[INFO] crate tl8roy/stm32f302r8_rust 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 tl8roy/stm32f302r8_rust against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-6/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/tl8roy/stm32f302r8_rust:/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] c2af89e34859d195473aa60cb9ab3da8c4572e5079a217dd6a449d240f3a24e1
[INFO] running `"docker" "start" "-a" "c2af89e34859d195473aa60cb9ab3da8c4572e5079a217dd6a449d240f3a24e1"`
[INFO] [stderr]    Compiling proc-macro2 v0.4.28
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]     Checking vcell v0.1.0
[INFO] [stderr]    Compiling syn v0.15.33
[INFO] [stderr]    Compiling cortex-m v0.6.0
[INFO] [stderr]    Compiling cortex-m v0.5.9
[INFO] [stderr]    Compiling cortex-m-rt v0.6.8
[INFO] [stderr]    Compiling stm32f3 v0.6.0
[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[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 `stable_deref_trait`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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" "c2af89e34859d195473aa60cb9ab3da8c4572e5079a217dd6a449d240f3a24e1"`
[INFO] running `"docker" "rm" "-f" "c2af89e34859d195473aa60cb9ab3da8c4572e5079a217dd6a449d240f3a24e1"`
[INFO] [stdout] c2af89e34859d195473aa60cb9ab3da8c4572e5079a217dd6a449d240f3a24e1