[INFO] updating cached repository oxidizers/drdns
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/oxidizers/drdns
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/oxidizers/drdns" "work/ex/beta-1.37-6/sources/1.36.0/gh/oxidizers/drdns"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/oxidizers/drdns'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/oxidizers/drdns" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/oxidizers/drdns"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/oxidizers/drdns'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 98c1153a09642c2a5d8d2ed77ef7d9429d94995a
[INFO] sha for GitHub repo oxidizers/drdns: 98c1153a09642c2a5d8d2ed77ef7d9429d94995a
[INFO] validating manifest of oxidizers/drdns on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of oxidizers/drdns on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing oxidizers/drdns
[INFO] finished frobbing oxidizers/drdns
[INFO] frobbed toml for oxidizers/drdns written to work/ex/beta-1.37-6/sources/1.36.0/gh/oxidizers/drdns/Cargo.toml
[INFO] started frobbing oxidizers/drdns
[INFO] finished frobbing oxidizers/drdns
[INFO] frobbed toml for oxidizers/drdns written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/oxidizers/drdns/Cargo.toml
[INFO] crate oxidizers/drdns already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing oxidizers/drdns against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/oxidizers/drdns:/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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 9231a51c67c28dc5ccaa83e49eed920d49e861f537008de85839e59c14cd1b7f
[INFO] running `"docker" "start" "-a" "9231a51c67c28dc5ccaa83e49eed920d49e861f537008de85839e59c14cd1b7f"`
[INFO] [stderr]    Compiling errno v0.2.3
[INFO] [stderr]    Compiling drdns v0.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused comparison that must be used
[INFO] [stderr]    --> src/buffer.rs:249:13
[INFO] [stderr]     |
[INFO] [stderr] 249 |             w == 0i32;
[INFO] [stderr]     |             ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]    --> src/lib.rs:3:9
[INFO] [stderr]     |
[INFO] [stderr] 3   | #![deny(warnings)]
[INFO] [stderr]     |         ^^^^^^^^
[INFO] [stderr]     = note: #[warn(unused_must_use)] implied by #[warn(warnings)]
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.73s
[INFO] running `"docker" "inspect" "9231a51c67c28dc5ccaa83e49eed920d49e861f537008de85839e59c14cd1b7f"`
[INFO] running `"docker" "rm" "-f" "9231a51c67c28dc5ccaa83e49eed920d49e861f537008de85839e59c14cd1b7f"`
[INFO] [stdout] 9231a51c67c28dc5ccaa83e49eed920d49e861f537008de85839e59c14cd1b7f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/oxidizers/drdns:/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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] c275494d71ea53b883ebbc6bea2539a0f904876ef5da2ea799ac2228d9a447b5
[INFO] running `"docker" "start" "-a" "c275494d71ea53b883ebbc6bea2539a0f904876ef5da2ea799ac2228d9a447b5"`
[INFO] [stderr]    Compiling drdns v0.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused comparison that must be used
[INFO] [stderr]    --> src/buffer.rs:249:13
[INFO] [stderr]     |
[INFO] [stderr] 249 |             w == 0i32;
[INFO] [stderr]     |             ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]    --> src/lib.rs:3:9
[INFO] [stderr]     |
[INFO] [stderr] 3   | #![deny(warnings)]
[INFO] [stderr]     |         ^^^^^^^^
[INFO] [stderr]     = note: #[warn(unused_must_use)] implied by #[warn(warnings)]
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.71s
[INFO] running `"docker" "inspect" "c275494d71ea53b883ebbc6bea2539a0f904876ef5da2ea799ac2228d9a447b5"`
[INFO] running `"docker" "rm" "-f" "c275494d71ea53b883ebbc6bea2539a0f904876ef5da2ea799ac2228d9a447b5"`
[INFO] [stdout] c275494d71ea53b883ebbc6bea2539a0f904876ef5da2ea799ac2228d9a447b5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/oxidizers/drdns:/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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] d74c390ef009964b42f860ef07d7320f614274ad56eac3843da896511868006e
[INFO] running `"docker" "start" "-a" "d74c390ef009964b42f860ef07d7320f614274ad56eac3843da896511868006e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/drdns-1770e6849a5a773c
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test cdb::hash::test_cdb_hash ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests drdns
[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" "d74c390ef009964b42f860ef07d7320f614274ad56eac3843da896511868006e"`
[INFO] running `"docker" "rm" "-f" "d74c390ef009964b42f860ef07d7320f614274ad56eac3843da896511868006e"`
[INFO] [stdout] d74c390ef009964b42f860ef07d7320f614274ad56eac3843da896511868006e