[INFO] updating cached repository matt2xu/rustfest2016
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/matt2xu/rustfest2016
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/matt2xu/rustfest2016" "work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/matt2xu/rustfest2016"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/matt2xu/rustfest2016'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/matt2xu/rustfest2016" "work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/matt2xu/rustfest2016"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/matt2xu/rustfest2016'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8ec43273c9f805a59aa6e2cbb2ad4564b9b4cb94
[INFO] sha for GitHub repo matt2xu/rustfest2016: 8ec43273c9f805a59aa6e2cbb2ad4564b9b4cb94
[INFO] validating manifest of matt2xu/rustfest2016 on toolchain master#a850a426491e14186af2250549bf41256b5938d2
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of matt2xu/rustfest2016 on toolchain try#06a150c7d11500b41499224f165e9de1de096768
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing matt2xu/rustfest2016
[INFO] finished frobbing matt2xu/rustfest2016
[INFO] frobbed toml for matt2xu/rustfest2016 written to work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/matt2xu/rustfest2016/Cargo.toml
[INFO] started frobbing matt2xu/rustfest2016
[INFO] finished frobbing matt2xu/rustfest2016
[INFO] frobbed toml for matt2xu/rustfest2016 written to work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/matt2xu/rustfest2016/Cargo.toml
[INFO] crate matt2xu/rustfest2016 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/crater-raid/crater/work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/matt2xu/rustfest2016/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Updating git repository `https://github.com/carllerche/bytes`
[INFO] [stderr]     Updating git repository `https://github.com/tokio-rs/tokio-proto`
[INFO] [stderr]     Updating git repository `https://github.com/tokio-rs/tokio-service`
[INFO] [stderr]     Updating git repository `https://github.com/carllerche/iovec`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Updating git repository `https://github.com/carllerche/bytes`
[INFO] [stderr]     Blocking waiting for file lock on the git checkouts
[INFO] [stderr]     Updating git repository `https://github.com/tokio-rs/tokio-proto`
[INFO] [stderr]     Blocking waiting for file lock on the git checkouts
[INFO] [stderr]     Updating git repository `https://github.com/tokio-rs/tokio-service`
[INFO] [stderr]     Blocking waiting for file lock on the git checkouts
[INFO] [stderr]     Updating git repository `https://github.com/carllerche/iovec`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking matt2xu/rustfest2016 against master#a850a426491e14186af2250549bf41256b5938d2 for pr-60162
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60162/worker-5/master#a850a426491e14186af2250549bf41256b5938d2:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/matt2xu/rustfest2016:/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" "+a850a426491e14186af2250549bf41256b5938d2-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4c1606ee394066a3234b2e4401fabd1201e12b681f06c195da3acb71b053910c
[INFO] running `"docker" "start" "-a" "4c1606ee394066a3234b2e4401fabd1201e12b681f06c195da3acb71b053910c"`
[INFO] [stderr] error: failed to load source for a dependency on `bytes`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Unable to update https://github.com/carllerche/bytes#dc961c3e
[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" "4c1606ee394066a3234b2e4401fabd1201e12b681f06c195da3acb71b053910c"`
[INFO] running `"docker" "rm" "-f" "4c1606ee394066a3234b2e4401fabd1201e12b681f06c195da3acb71b053910c"`
[INFO] [stdout] 4c1606ee394066a3234b2e4401fabd1201e12b681f06c195da3acb71b053910c