[INFO] updating cached repository onehr/dbrs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/onehr/dbrs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/onehr/dbrs" "work/ex/beta-1.38-1/sources/1.37.0/gh/onehr/dbrs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/onehr/dbrs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/onehr/dbrs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/onehr/dbrs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/onehr/dbrs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e75e2803fb3b3449f593611195011a8dd6297eee
[INFO] sha for GitHub repo onehr/dbrs: e75e2803fb3b3449f593611195011a8dd6297eee
[INFO] validating manifest of onehr/dbrs 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 onehr/dbrs 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 onehr/dbrs
[INFO] finished frobbing onehr/dbrs
[INFO] frobbed toml for onehr/dbrs written to work/ex/beta-1.38-1/sources/1.37.0/gh/onehr/dbrs/Cargo.toml
[INFO] started frobbing onehr/dbrs
[INFO] finished frobbing onehr/dbrs
[INFO] frobbed toml for onehr/dbrs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/onehr/dbrs/Cargo.toml
[INFO] crate onehr/dbrs 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing onehr/dbrs 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-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/onehr/dbrs:/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] 6912443204ee7cf5ebb68facf1438ba48e46fb2f0ecb5ed82bc4dee742f0961b
[INFO] running `"docker" "start" "-a" "6912443204ee7cf5ebb68facf1438ba48e46fb2f0ecb5ed82bc4dee742f0961b"`
[INFO] [stderr]    Compiling linenoise-rust v0.2.1
[INFO] [stderr]    Compiling nix v0.13.0
[INFO] [stderr]    Compiling dbrs v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/debugger.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let mut ret: Vec<&str>;
[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 12.83s
[INFO] running `"docker" "inspect" "6912443204ee7cf5ebb68facf1438ba48e46fb2f0ecb5ed82bc4dee742f0961b"`
[INFO] running `"docker" "rm" "-f" "6912443204ee7cf5ebb68facf1438ba48e46fb2f0ecb5ed82bc4dee742f0961b"`
[INFO] [stdout] 6912443204ee7cf5ebb68facf1438ba48e46fb2f0ecb5ed82bc4dee742f0961b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/onehr/dbrs:/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] 4528d196a5d3627163ee2173c29952ba053553949930e15117cc2004eeed9dc1
[INFO] running `"docker" "start" "-a" "4528d196a5d3627163ee2173c29952ba053553949930e15117cc2004eeed9dc1"`
[INFO] [stderr]    Compiling dbrs v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/debugger.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let mut ret: Vec<&str>;
[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 0.89s
[INFO] running `"docker" "inspect" "4528d196a5d3627163ee2173c29952ba053553949930e15117cc2004eeed9dc1"`
[INFO] running `"docker" "rm" "-f" "4528d196a5d3627163ee2173c29952ba053553949930e15117cc2004eeed9dc1"`
[INFO] [stdout] 4528d196a5d3627163ee2173c29952ba053553949930e15117cc2004eeed9dc1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/onehr/dbrs:/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] 9f4517d0980bf89cb2c21647fe991507181870106ce77113d67d0faffb585970
[INFO] running `"docker" "start" "-a" "9f4517d0980bf89cb2c21647fe991507181870106ce77113d67d0faffb585970"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/dbrs-c0ab16850d5a17d9
[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" "9f4517d0980bf89cb2c21647fe991507181870106ce77113d67d0faffb585970"`
[INFO] running `"docker" "rm" "-f" "9f4517d0980bf89cb2c21647fe991507181870106ce77113d67d0faffb585970"`
[INFO] [stdout] 9f4517d0980bf89cb2c21647fe991507181870106ce77113d67d0faffb585970