[INFO] updating cached repository kindlychung/dpi
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/kindlychung/dpi
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/kindlychung/dpi" "work/ex/beta-1.38-1/sources/1.37.0/gh/kindlychung/dpi"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/kindlychung/dpi'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kindlychung/dpi" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kindlychung/dpi"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kindlychung/dpi'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 929d10ed2c319814b7e86d64a5a866c941ab94d4
[INFO] sha for GitHub repo kindlychung/dpi: 929d10ed2c319814b7e86d64a5a866c941ab94d4
[INFO] validating manifest of kindlychung/dpi on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of kindlychung/dpi on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing kindlychung/dpi
[INFO] finished frobbing kindlychung/dpi
[INFO] frobbed toml for kindlychung/dpi written to work/ex/beta-1.38-1/sources/1.37.0/gh/kindlychung/dpi/Cargo.toml
[INFO] started frobbing kindlychung/dpi
[INFO] finished frobbing kindlychung/dpi
[INFO] frobbed toml for kindlychung/dpi written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kindlychung/dpi/Cargo.toml
[INFO] crate kindlychung/dpi already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing kindlychung/dpi against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/kindlychung/dpi:/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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 86a5592b90e7cd2e0bef6a2f697fd05eef1375fa318ed487b99529be9195fc5d
[INFO] running `"docker" "start" "-a" "86a5592b90e7cd2e0bef6a2f697fd05eef1375fa318ed487b99529be9195fc5d"`
[INFO] [stderr]    Compiling dpi v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let mut args: Vec<String> = env::args().collect();
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `"docker" "inspect" "86a5592b90e7cd2e0bef6a2f697fd05eef1375fa318ed487b99529be9195fc5d"`
[INFO] running `"docker" "rm" "-f" "86a5592b90e7cd2e0bef6a2f697fd05eef1375fa318ed487b99529be9195fc5d"`
[INFO] [stdout] 86a5592b90e7cd2e0bef6a2f697fd05eef1375fa318ed487b99529be9195fc5d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/kindlychung/dpi:/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=warn" "-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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 9d1a3b2d4f85006389f00b86950f374fa071c7187cef11b17b49f90bf506f73a
[INFO] running `"docker" "start" "-a" "9d1a3b2d4f85006389f00b86950f374fa071c7187cef11b17b49f90bf506f73a"`
[INFO] [stderr]    Compiling dpi v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let mut args: Vec<String> = env::args().collect();
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `"docker" "inspect" "9d1a3b2d4f85006389f00b86950f374fa071c7187cef11b17b49f90bf506f73a"`
[INFO] running `"docker" "rm" "-f" "9d1a3b2d4f85006389f00b86950f374fa071c7187cef11b17b49f90bf506f73a"`
[INFO] [stdout] 9d1a3b2d4f85006389f00b86950f374fa071c7187cef11b17b49f90bf506f73a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/kindlychung/dpi:/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=warn" "-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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 60fa97541d7e5233c95e2108708c17894fdbd84e49b53f9af720de1d2bf8af71
[INFO] running `"docker" "start" "-a" "60fa97541d7e5233c95e2108708c17894fdbd84e49b53f9af720de1d2bf8af71"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/dpi-83177ff977c4bf3e
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "60fa97541d7e5233c95e2108708c17894fdbd84e49b53f9af720de1d2bf8af71"`
[INFO] running `"docker" "rm" "-f" "60fa97541d7e5233c95e2108708c17894fdbd84e49b53f9af720de1d2bf8af71"`
[INFO] [stdout] 60fa97541d7e5233c95e2108708c17894fdbd84e49b53f9af720de1d2bf8af71