[INFO] updating cached repository AKholetsky/mvn_clean_install
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/AKholetsky/mvn_clean_install
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/AKholetsky/mvn_clean_install" "work/ex/beta-1.38-1/sources/1.37.0/gh/AKholetsky/mvn_clean_install"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/AKholetsky/mvn_clean_install'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/AKholetsky/mvn_clean_install" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/AKholetsky/mvn_clean_install"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/AKholetsky/mvn_clean_install'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 62e334b382c8c79a6ee1ccc66077490d25a55d5b
[INFO] sha for GitHub repo AKholetsky/mvn_clean_install: 62e334b382c8c79a6ee1ccc66077490d25a55d5b
[INFO] validating manifest of AKholetsky/mvn_clean_install 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 AKholetsky/mvn_clean_install 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 AKholetsky/mvn_clean_install
[INFO] finished frobbing AKholetsky/mvn_clean_install
[INFO] frobbed toml for AKholetsky/mvn_clean_install written to work/ex/beta-1.38-1/sources/1.37.0/gh/AKholetsky/mvn_clean_install/Cargo.toml
[INFO] started frobbing AKholetsky/mvn_clean_install
[INFO] finished frobbing AKholetsky/mvn_clean_install
[INFO] frobbed toml for AKholetsky/mvn_clean_install written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/AKholetsky/mvn_clean_install/Cargo.toml
[INFO] crate AKholetsky/mvn_clean_install 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 AKholetsky/mvn_clean_install 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/AKholetsky/mvn_clean_install:/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] d99fe14ea29c40c8379a99b42456c0db4f072ddc0941b8dbf9b1a785be24398a
[INFO] running `"docker" "start" "-a" "d99fe14ea29c40c8379a99b42456c0db4f072ddc0941b8dbf9b1a785be24398a"`
[INFO] [stderr]    Compiling mvn_clean_install v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Output`
[INFO] [stderr]  --> src/main.rs:1:44
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::process::{ Command, Child, Stdio, Output };
[INFO] [stderr]   |                                            ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/main.rs:36:17
[INFO] [stderr]    |
[INFO] [stderr] 36 |             Err(e) => Err("can't remove"),
[INFO] [stderr]    |                 ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 | /         match fs::remove_dir_all(dir) {
[INFO] [stderr] 35 | |             Ok(_) => Ok("Conservis removed"),
[INFO] [stderr] 36 | |             Err(e) => Err("can't remove"),
[INFO] [stderr] 37 | |         };
[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 1.07s
[INFO] running `"docker" "inspect" "d99fe14ea29c40c8379a99b42456c0db4f072ddc0941b8dbf9b1a785be24398a"`
[INFO] running `"docker" "rm" "-f" "d99fe14ea29c40c8379a99b42456c0db4f072ddc0941b8dbf9b1a785be24398a"`
[INFO] [stdout] d99fe14ea29c40c8379a99b42456c0db4f072ddc0941b8dbf9b1a785be24398a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/AKholetsky/mvn_clean_install:/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] 1c25624b246f61def0799220a195769a8b91307e7c2dfded8e74c54ece8ebe84
[INFO] running `"docker" "start" "-a" "1c25624b246f61def0799220a195769a8b91307e7c2dfded8e74c54ece8ebe84"`
[INFO] [stderr]    Compiling mvn_clean_install v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Output`
[INFO] [stderr]  --> src/main.rs:1:44
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::process::{ Command, Child, Stdio, Output };
[INFO] [stderr]   |                                            ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/main.rs:36:17
[INFO] [stderr]    |
[INFO] [stderr] 36 |             Err(e) => Err("can't remove"),
[INFO] [stderr]    |                 ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 | /         match fs::remove_dir_all(dir) {
[INFO] [stderr] 35 | |             Ok(_) => Ok("Conservis removed"),
[INFO] [stderr] 36 | |             Err(e) => Err("can't remove"),
[INFO] [stderr] 37 | |         };
[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 0.65s
[INFO] running `"docker" "inspect" "1c25624b246f61def0799220a195769a8b91307e7c2dfded8e74c54ece8ebe84"`
[INFO] running `"docker" "rm" "-f" "1c25624b246f61def0799220a195769a8b91307e7c2dfded8e74c54ece8ebe84"`
[INFO] [stdout] 1c25624b246f61def0799220a195769a8b91307e7c2dfded8e74c54ece8ebe84
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/AKholetsky/mvn_clean_install:/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] ddd073b9669706a7cf402929a0b27621b521ce78b2fd2172c03fd2f903ecc30b
[INFO] running `"docker" "start" "-a" "ddd073b9669706a7cf402929a0b27621b521ce78b2fd2172c03fd2f903ecc30b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mvn_clean_install-6543d62912888fde
[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" "ddd073b9669706a7cf402929a0b27621b521ce78b2fd2172c03fd2f903ecc30b"`
[INFO] running `"docker" "rm" "-f" "ddd073b9669706a7cf402929a0b27621b521ce78b2fd2172c03fd2f903ecc30b"`
[INFO] [stdout] ddd073b9669706a7cf402929a0b27621b521ce78b2fd2172c03fd2f903ecc30b