[INFO] updating cached repository cgm616/couscous
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/cgm616/couscous
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/cgm616/couscous" "work/ex/pr-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/cgm616/couscous"`
[INFO] [stderr] Cloning into 'work/ex/pr-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/cgm616/couscous'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/cgm616/couscous" "work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/gh/cgm616/couscous"`
[INFO] [stderr] Cloning into 'work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/gh/cgm616/couscous'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f692592387d8749e984ff836a4e18c3cc42ee708
[INFO] sha for GitHub repo cgm616/couscous: f692592387d8749e984ff836a4e18c3cc42ee708
[INFO] validating manifest of cgm616/couscous on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of cgm616/couscous on toolchain try#74092351c05ae61047b2be02024415546595e974
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+74092351c05ae61047b2be02024415546595e974-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing cgm616/couscous
[INFO] finished frobbing cgm616/couscous
[INFO] frobbed toml for cgm616/couscous written to work/ex/pr-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/cgm616/couscous/Cargo.toml
[INFO] started frobbing cgm616/couscous
[INFO] finished frobbing cgm616/couscous
[INFO] frobbed toml for cgm616/couscous written to work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/gh/cgm616/couscous/Cargo.toml
[INFO] crate cgm616/couscous already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+74092351c05ae61047b2be02024415546595e974-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking cgm616/couscous against try#74092351c05ae61047b2be02024415546595e974 for pr-60174
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60174/worker-5/try#74092351c05ae61047b2be02024415546595e974:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/gh/cgm616/couscous:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+74092351c05ae61047b2be02024415546595e974-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a2d52f3d92904cb3e296bb9d5b99a0a537f2f440fb25c39b383017e9550f2f19
[INFO] running `"docker" "start" "-a" "a2d52f3d92904cb3e296bb9d5b99a0a537f2f440fb25c39b383017e9550f2f19"`
[INFO] [stderr] error: failed to resolve patches for `https://github.com/rust-lang/crates.io-index`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to load source for a dependency on `nrf51`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Unable to update https://github.com/therealprof/nrf51.git#498ad0b8
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to open: /opt/crater/cargo-home/git/.cargo-lock-git
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Read-only file system (os error 30)
[INFO] running `"docker" "inspect" "a2d52f3d92904cb3e296bb9d5b99a0a537f2f440fb25c39b383017e9550f2f19"`
[INFO] running `"docker" "rm" "-f" "a2d52f3d92904cb3e296bb9d5b99a0a537f2f440fb25c39b383017e9550f2f19"`
[INFO] [stdout] a2d52f3d92904cb3e296bb9d5b99a0a537f2f440fb25c39b383017e9550f2f19