[INFO] updating cached repository rustyhorde/nailgun
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/rustyhorde/nailgun
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/rustyhorde/nailgun" "work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/gh/rustyhorde/nailgun"`
[INFO] [stderr] Cloning into 'work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/gh/rustyhorde/nailgun'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/rustyhorde/nailgun" "work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/gh/rustyhorde/nailgun"`
[INFO] [stderr] Cloning into 'work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/gh/rustyhorde/nailgun'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4d90d0fbc9f8c0d86f86d17ec962424d94433897
[INFO] sha for GitHub repo rustyhorde/nailgun: 4d90d0fbc9f8c0d86f86d17ec962424d94433897
[INFO] validating manifest of rustyhorde/nailgun on toolchain master#6ea4036cd20a4b1ab1d56e555108c21735ff6946
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+6ea4036cd20a4b1ab1d56e555108c21735ff6946-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rustyhorde/nailgun on toolchain try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+003a7b6b5753e8509fdfe7949d4f0873ba71e4fc-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rustyhorde/nailgun
[INFO] finished frobbing rustyhorde/nailgun
[INFO] frobbed toml for rustyhorde/nailgun written to work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/gh/rustyhorde/nailgun/Cargo.toml
[INFO] started frobbing rustyhorde/nailgun
[INFO] finished frobbing rustyhorde/nailgun
[INFO] frobbed toml for rustyhorde/nailgun written to work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/gh/rustyhorde/nailgun/Cargo.toml
[INFO] crate rustyhorde/nailgun already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+6ea4036cd20a4b1ab1d56e555108c21735ff6946-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+003a7b6b5753e8509fdfe7949d4f0873ba71e4fc-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking rustyhorde/nailgun against master#6ea4036cd20a4b1ab1d56e555108c21735ff6946 for pr-62181
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62181/worker-3/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/gh/rustyhorde/nailgun:/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" "+6ea4036cd20a4b1ab1d56e555108c21735ff6946-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 569291355ad63b6fded047f346e9ca46612999456193b038c1e53f2038af1faf
[INFO] running `"docker" "start" "-a" "569291355ad63b6fded047f346e9ca46612999456193b038c1e53f2038af1faf"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: failed to update path override `/opt/crater/workdir/mio` (defined in `/opt/crater/workdir/.cargo/config`)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Could not find Cargo.toml in `/opt/crater/workdir/mio`
[INFO] running `"docker" "inspect" "569291355ad63b6fded047f346e9ca46612999456193b038c1e53f2038af1faf"`
[INFO] running `"docker" "rm" "-f" "569291355ad63b6fded047f346e9ca46612999456193b038c1e53f2038af1faf"`
[INFO] [stdout] 569291355ad63b6fded047f346e9ca46612999456193b038c1e53f2038af1faf