[INFO] updating cached repository modulus-os/driputils
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/modulus-os/driputils
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/modulus-os/driputils" "work/ex/beta-1.37-6/sources/1.36.0/gh/modulus-os/driputils"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/modulus-os/driputils'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/modulus-os/driputils" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/modulus-os/driputils"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/modulus-os/driputils'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 28760dba66461af0af912f64b15ea6b34b94ce7c
[INFO] sha for GitHub repo modulus-os/driputils: 28760dba66461af0af912f64b15ea6b34b94ce7c
[INFO] validating manifest of modulus-os/driputils 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 modulus-os/driputils 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 modulus-os/driputils
[INFO] finished frobbing modulus-os/driputils
[INFO] frobbed toml for modulus-os/driputils written to work/ex/beta-1.37-6/sources/1.36.0/gh/modulus-os/driputils/Cargo.toml
[INFO] started frobbing modulus-os/driputils
[INFO] finished frobbing modulus-os/driputils
[INFO] frobbed toml for modulus-os/driputils written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/modulus-os/driputils/Cargo.toml
[INFO] crate modulus-os/driputils 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] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/modulus-os/driputils/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 modulus-os/driputils against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/modulus-os/driputils:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 38214b522a6db351fd8fd5d494c244bff1e9d0cd77d364dc343cd07cabeb0f3f
[INFO] running `"docker" "start" "-a" "38214b522a6db351fd8fd5d494c244bff1e9d0cd77d364dc343cd07cabeb0f3f"`
[INFO] [stderr]    Compiling driputils v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/bin/drip.rs:84:2
[INFO] [stderr]    |
[INFO] [stderr] 84 |     f.unwrap().read_to_string(&mut file);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.26s
[INFO] running `"docker" "inspect" "38214b522a6db351fd8fd5d494c244bff1e9d0cd77d364dc343cd07cabeb0f3f"`
[INFO] running `"docker" "rm" "-f" "38214b522a6db351fd8fd5d494c244bff1e9d0cd77d364dc343cd07cabeb0f3f"`
[INFO] [stdout] 38214b522a6db351fd8fd5d494c244bff1e9d0cd77d364dc343cd07cabeb0f3f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/modulus-os/driputils:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 810f40c8bd82c09edcad49bd0e1eb6db5950e4e717c012ce51e5b847f73d2ccf
[INFO] running `"docker" "start" "-a" "810f40c8bd82c09edcad49bd0e1eb6db5950e4e717c012ce51e5b847f73d2ccf"`
[INFO] [stderr]    Compiling driputils v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/bin/drip.rs:84:2
[INFO] [stderr]    |
[INFO] [stderr] 84 |     f.unwrap().read_to_string(&mut file);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `"docker" "inspect" "810f40c8bd82c09edcad49bd0e1eb6db5950e4e717c012ce51e5b847f73d2ccf"`
[INFO] running `"docker" "rm" "-f" "810f40c8bd82c09edcad49bd0e1eb6db5950e4e717c012ce51e5b847f73d2ccf"`
[INFO] [stdout] 810f40c8bd82c09edcad49bd0e1eb6db5950e4e717c012ce51e5b847f73d2ccf
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/modulus-os/driputils:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 2afb28472b6513288503b89d7143d74ae223b8fe1e1b61b04278c14a80d4d508
[INFO] running `"docker" "start" "-a" "2afb28472b6513288503b89d7143d74ae223b8fe1e1b61b04278c14a80d4d508"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/driputils-d1aa1188b81e3a54
[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] [stderr]      Running /opt/crater/target/debug/deps/drip-9dc427a89d7fa88d
[INFO] [stderr]    Doc-tests driputils
[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] [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" "2afb28472b6513288503b89d7143d74ae223b8fe1e1b61b04278c14a80d4d508"`
[INFO] running `"docker" "rm" "-f" "2afb28472b6513288503b89d7143d74ae223b8fe1e1b61b04278c14a80d4d508"`
[INFO] [stdout] 2afb28472b6513288503b89d7143d74ae223b8fe1e1b61b04278c14a80d4d508