[INFO] updating cached repository zlewko/blue-pill-quickstart-rtfm
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/zlewko/blue-pill-quickstart-rtfm
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/zlewko/blue-pill-quickstart-rtfm" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/zlewko/blue-pill-quickstart-rtfm"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/zlewko/blue-pill-quickstart-rtfm'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/zlewko/blue-pill-quickstart-rtfm" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/zlewko/blue-pill-quickstart-rtfm"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/zlewko/blue-pill-quickstart-rtfm'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 114f9cf08f2fbc7ad2361d5b3e94b3aac4ed7eaa
[INFO] sha for GitHub repo zlewko/blue-pill-quickstart-rtfm: 114f9cf08f2fbc7ad2361d5b3e94b3aac4ed7eaa
[INFO] validating manifest of zlewko/blue-pill-quickstart-rtfm on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of zlewko/blue-pill-quickstart-rtfm on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing zlewko/blue-pill-quickstart-rtfm
[INFO] finished frobbing zlewko/blue-pill-quickstart-rtfm
[INFO] frobbed toml for zlewko/blue-pill-quickstart-rtfm written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/zlewko/blue-pill-quickstart-rtfm/Cargo.toml
[INFO] started frobbing zlewko/blue-pill-quickstart-rtfm
[INFO] finished frobbing zlewko/blue-pill-quickstart-rtfm
[INFO] frobbed toml for zlewko/blue-pill-quickstart-rtfm written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/zlewko/blue-pill-quickstart-rtfm/Cargo.toml
[INFO] crate zlewko/blue-pill-quickstart-rtfm already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking zlewko/blue-pill-quickstart-rtfm against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-2/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/zlewko/blue-pill-quickstart-rtfm:/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" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 8cc84a0380aaae9ee0f13eb521bd952be12cf1ea3e96cdbe2b4c97e64bffb439
[INFO] running `"docker" "start" "-a" "8cc84a0380aaae9ee0f13eb521bd952be12cf1ea3e96cdbe2b4c97e64bffb439"`
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling rand_core v0.4.0
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling cortex-m-rt v0.6.7
[INFO] [stderr]     Checking vcell v0.1.0
[INFO] [stderr] error[E0463]: can't find crate for `core`
[INFO] [stderr]   |
[INFO] [stderr]   = note: the `thumbv7m-none-eabi` 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" "8cc84a0380aaae9ee0f13eb521bd952be12cf1ea3e96cdbe2b4c97e64bffb439"`
[INFO] running `"docker" "rm" "-f" "8cc84a0380aaae9ee0f13eb521bd952be12cf1ea3e96cdbe2b4c97e64bffb439"`
[INFO] [stdout] 8cc84a0380aaae9ee0f13eb521bd952be12cf1ea3e96cdbe2b4c97e64bffb439