[INFO] updating cached repository micxjo/rust-synacor-challenge [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/micxjo/rust-synacor-challenge [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/micxjo/rust-synacor-challenge" "work/ex/pr-60620-1/sources/master#ef01f29964df207f181bd5bcf236e41372a17273/gh/micxjo/rust-synacor-challenge"` [INFO] [stderr] Cloning into 'work/ex/pr-60620-1/sources/master#ef01f29964df207f181bd5bcf236e41372a17273/gh/micxjo/rust-synacor-challenge'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/micxjo/rust-synacor-challenge" "work/ex/pr-60620-1/sources/try#a7cff45e655f886da150e206c7acbe984df4ab71/gh/micxjo/rust-synacor-challenge"` [INFO] [stderr] Cloning into 'work/ex/pr-60620-1/sources/try#a7cff45e655f886da150e206c7acbe984df4ab71/gh/micxjo/rust-synacor-challenge'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 1af2ddd8bc6c770610adfe05def9ba03c118ac6f [INFO] sha for GitHub repo micxjo/rust-synacor-challenge: 1af2ddd8bc6c770610adfe05def9ba03c118ac6f [INFO] validating manifest of micxjo/rust-synacor-challenge on toolchain master#ef01f29964df207f181bd5bcf236e41372a17273 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+ef01f29964df207f181bd5bcf236e41372a17273-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of micxjo/rust-synacor-challenge on toolchain try#a7cff45e655f886da150e206c7acbe984df4ab71 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a7cff45e655f886da150e206c7acbe984df4ab71-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing micxjo/rust-synacor-challenge [INFO] finished frobbing micxjo/rust-synacor-challenge [INFO] frobbed toml for micxjo/rust-synacor-challenge written to work/ex/pr-60620-1/sources/master#ef01f29964df207f181bd5bcf236e41372a17273/gh/micxjo/rust-synacor-challenge/Cargo.toml [INFO] started frobbing micxjo/rust-synacor-challenge [INFO] finished frobbing micxjo/rust-synacor-challenge [INFO] frobbed toml for micxjo/rust-synacor-challenge written to work/ex/pr-60620-1/sources/try#a7cff45e655f886da150e206c7acbe984df4ab71/gh/micxjo/rust-synacor-challenge/Cargo.toml [INFO] crate micxjo/rust-synacor-challenge already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+ef01f29964df207f181bd5bcf236e41372a17273-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a7cff45e655f886da150e206c7acbe984df4ab71-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking micxjo/rust-synacor-challenge against try#a7cff45e655f886da150e206c7acbe984df4ab71 for pr-60620-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60620-1/worker-1/try#a7cff45e655f886da150e206c7acbe984df4ab71:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60620-1/sources/try#a7cff45e655f886da150e206c7acbe984df4ab71/gh/micxjo/rust-synacor-challenge:/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" "+a7cff45e655f886da150e206c7acbe984df4ab71-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 5fe1d11272bd0a3c40f3c974e47816b57f136239c80828e1aa8d7c62aa87f91b [INFO] running `"docker" "start" "-a" "5fe1d11272bd0a3c40f3c974e47816b57f136239c80828e1aa8d7c62aa87f91b"` [INFO] [stderr] error: failed to acquire package cache lock [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] failed to open: /opt/crater/cargo-home/.package-cache [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] Read-only file system (os error 30) [INFO] running `"docker" "inspect" "5fe1d11272bd0a3c40f3c974e47816b57f136239c80828e1aa8d7c62aa87f91b"` [INFO] running `"docker" "rm" "-f" "5fe1d11272bd0a3c40f3c974e47816b57f136239c80828e1aa8d7c62aa87f91b"` [INFO] [stdout] 5fe1d11272bd0a3c40f3c974e47816b57f136239c80828e1aa8d7c62aa87f91b