[INFO] fetching crate eureka 1.6.1...
[INFO] extracting crate eureka 1.6.1 into work/ex/beta-1.37-6/sources/1.36.0/reg/eureka/1.6.1
[INFO] extracting crate eureka 1.6.1 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/eureka/1.6.1
[INFO] validating manifest of eureka-1.6.1 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 eureka-1.6.1 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 eureka-1.6.1
[INFO] finished frobbing eureka-1.6.1
[INFO] frobbed toml for eureka-1.6.1 written to work/ex/beta-1.37-6/sources/1.36.0/reg/eureka/1.6.1/Cargo.toml
[INFO] started frobbing eureka-1.6.1
[INFO] finished frobbing eureka-1.6.1
[INFO] frobbed toml for eureka-1.6.1 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/eureka/1.6.1/Cargo.toml
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing eureka-1.6.1 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-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/eureka/1.6.1:/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] d2ff292c49cd9f4932a7977161774130e2906d8f1f7329e65cef7bacd9b8493d
[INFO] running `"docker" "start" "-a" "d2ff292c49cd9f4932a7977161774130e2906d8f1f7329e65cef7bacd9b8493d"`
[INFO] [stderr]    Compiling textwrap v0.9.0
[INFO] [stderr]    Compiling dialoguer v0.1.0
[INFO] [stderr]    Compiling clap v2.27.1
[INFO] [stderr]    Compiling eureka v1.6.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.04s
[INFO] running `"docker" "inspect" "d2ff292c49cd9f4932a7977161774130e2906d8f1f7329e65cef7bacd9b8493d"`
[INFO] running `"docker" "rm" "-f" "d2ff292c49cd9f4932a7977161774130e2906d8f1f7329e65cef7bacd9b8493d"`
[INFO] [stdout] d2ff292c49cd9f4932a7977161774130e2906d8f1f7329e65cef7bacd9b8493d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/eureka/1.6.1:/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] c6663f7d70a2fc1d6b87b95700723f3a4ed31e7398211c0ba552a570030118a7
[INFO] running `"docker" "start" "-a" "c6663f7d70a2fc1d6b87b95700723f3a4ed31e7398211c0ba552a570030118a7"`
[INFO] [stderr]    Compiling eureka v1.6.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `reader::Reader`
[INFO] [stderr]    --> src/main.rs:264:9
[INFO] [stderr]     |
[INFO] [stderr] 264 |     use reader::Reader;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `path`
[INFO] [stderr]    --> src/main.rs:272:30
[INFO] [stderr]     |
[INFO] [stderr] 272 |         fn create_dir(&self, path: &str) -> Result<(), Error> {
[INFO] [stderr]     |                              ^^^^ help: consider prefixing with an underscore: `_path`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `path`
[INFO] [stderr]    --> src/main.rs:276:31
[INFO] [stderr]     |
[INFO] [stderr] 276 |         fn file_exists(&self, path: &str) -> bool {
[INFO] [stderr]     |                               ^^^^ help: consider prefixing with an underscore: `_path`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file`
[INFO] [stderr]    --> src/main.rs:280:27
[INFO] [stderr]     |
[INFO] [stderr] 280 |         fn file_rm(&self, file: ConfigFile) -> Result<(), Error> {
[INFO] [stderr]     |                           ^^^^ help: consider prefixing with an underscore: `_file`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file`
[INFO] [stderr]    --> src/main.rs:294:31
[INFO] [stderr]     |
[INFO] [stderr] 294 |         fn config_read(&self, file: ConfigFile) -> Result<String, Error> {
[INFO] [stderr]     |                               ^^^^ help: consider prefixing with an underscore: `_file`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file`
[INFO] [stderr]    --> src/main.rs:298:32
[INFO] [stderr]     |
[INFO] [stderr] 298 |         fn config_write(&self, file: ConfigFile, value: &String) -> Result<(), Error> {
[INFO] [stderr]     |                                ^^^^ help: consider prefixing with an underscore: `_file`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/main.rs:298:50
[INFO] [stderr]     |
[INFO] [stderr] 298 |         fn config_write(&self, file: ConfigFile, value: &String) -> Result<(), Error> {
[INFO] [stderr]     |                                                  ^^^^^ help: consider prefixing with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `MockFileHandler`
[INFO] [stderr]    --> src/main.rs:269:5
[INFO] [stderr]     |
[INFO] [stderr] 269 |     struct MockFileHandler;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.70s
[INFO] running `"docker" "inspect" "c6663f7d70a2fc1d6b87b95700723f3a4ed31e7398211c0ba552a570030118a7"`
[INFO] running `"docker" "rm" "-f" "c6663f7d70a2fc1d6b87b95700723f3a4ed31e7398211c0ba552a570030118a7"`
[INFO] [stdout] c6663f7d70a2fc1d6b87b95700723f3a4ed31e7398211c0ba552a570030118a7
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/eureka/1.6.1:/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] 6350337961dfc54c94eb5ae17387abaaefe067b1c21c20013705b336a3b4bf49
[INFO] running `"docker" "start" "-a" "6350337961dfc54c94eb5ae17387abaaefe067b1c21c20013705b336a3b4bf49"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/eureka-ec66315e61401b03
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::tests_work ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "6350337961dfc54c94eb5ae17387abaaefe067b1c21c20013705b336a3b4bf49"`
[INFO] running `"docker" "rm" "-f" "6350337961dfc54c94eb5ae17387abaaefe067b1c21c20013705b336a3b4bf49"`
[INFO] [stdout] 6350337961dfc54c94eb5ae17387abaaefe067b1c21c20013705b336a3b4bf49