[INFO] updating cached repository brettcannon/flatten_filenames
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/brettcannon/flatten_filenames
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/brettcannon/flatten_filenames" "work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/brettcannon/flatten_filenames"`
[INFO] [stderr] Cloning into 'work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/brettcannon/flatten_filenames'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/brettcannon/flatten_filenames" "work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/brettcannon/flatten_filenames"`
[INFO] [stderr] Cloning into 'work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/brettcannon/flatten_filenames'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 07caf91067bc8f95b5d87403cba8d100511eb9a9
[INFO] sha for GitHub repo brettcannon/flatten_filenames: 07caf91067bc8f95b5d87403cba8d100511eb9a9
[INFO] validating manifest of brettcannon/flatten_filenames on toolchain master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of brettcannon/flatten_filenames on toolchain try#18481b65f318e0b4b20c0fc61340054701719d6c
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing brettcannon/flatten_filenames
[INFO] finished frobbing brettcannon/flatten_filenames
[INFO] frobbed toml for brettcannon/flatten_filenames written to work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/brettcannon/flatten_filenames/Cargo.toml
[INFO] started frobbing brettcannon/flatten_filenames
[INFO] finished frobbing brettcannon/flatten_filenames
[INFO] frobbed toml for brettcannon/flatten_filenames written to work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/brettcannon/flatten_filenames/Cargo.toml
[INFO] crate brettcannon/flatten_filenames already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking brettcannon/flatten_filenames against master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7 for pr-62507
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62507/worker-5/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/brettcannon/flatten_filenames:/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" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 807235f6f94828b5080509a5b2ea0c284440486ca8f86ceff78e3fc4d56d8685
[INFO] running `"docker" "start" "-a" "807235f6f94828b5080509a5b2ea0c284440486ca8f86ceff78e3fc4d56d8685"`
[INFO] [stderr]     Checking flatten_filenames v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Checking tempdir v0.3.5
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.11s
[INFO] running `"docker" "inspect" "807235f6f94828b5080509a5b2ea0c284440486ca8f86ceff78e3fc4d56d8685"`
[INFO] running `"docker" "rm" "-f" "807235f6f94828b5080509a5b2ea0c284440486ca8f86ceff78e3fc4d56d8685"`
[INFO] [stdout] 807235f6f94828b5080509a5b2ea0c284440486ca8f86ceff78e3fc4d56d8685