[INFO] updating cached repository yakovs83/civics_test
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/yakovs83/civics_test
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/yakovs83/civics_test" "work/ex/beta-1.38-1/sources/1.37.0/gh/yakovs83/civics_test"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/yakovs83/civics_test'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/yakovs83/civics_test" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yakovs83/civics_test"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yakovs83/civics_test'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e666cfe6f1de16bbed3ca6cef54fe23c86fae74a
[INFO] sha for GitHub repo yakovs83/civics_test: e666cfe6f1de16bbed3ca6cef54fe23c86fae74a
[INFO] validating manifest of yakovs83/civics_test 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 yakovs83/civics_test 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 yakovs83/civics_test
[INFO] finished frobbing yakovs83/civics_test
[INFO] frobbed toml for yakovs83/civics_test written to work/ex/beta-1.38-1/sources/1.37.0/gh/yakovs83/civics_test/Cargo.toml
[INFO] started frobbing yakovs83/civics_test
[INFO] finished frobbing yakovs83/civics_test
[INFO] frobbed toml for yakovs83/civics_test written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yakovs83/civics_test/Cargo.toml
[INFO] crate yakovs83/civics_test 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 yakovs83/civics_test 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/yakovs83/civics_test:/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] 3809fd249eb9954938483cd42d8cafef4a6ceeb43c6a559f47179ce744e4460d
[INFO] running `"docker" "start" "-a" "3809fd249eb9954938483cd42d8cafef4a6ceeb43c6a559f47179ce744e4460d"`
[INFO] [stderr]    Compiling libc v0.2.46
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_os v0.1.1
[INFO] [stderr]    Compiling rand v0.6.4
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling civics_test v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:56:9
[INFO] [stderr]    |
[INFO] [stderr] 56 |         io::stdin().read_line(&mut input);
[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 19.14s
[INFO] running `"docker" "inspect" "3809fd249eb9954938483cd42d8cafef4a6ceeb43c6a559f47179ce744e4460d"`
[INFO] running `"docker" "rm" "-f" "3809fd249eb9954938483cd42d8cafef4a6ceeb43c6a559f47179ce744e4460d"`
[INFO] [stdout] 3809fd249eb9954938483cd42d8cafef4a6ceeb43c6a559f47179ce744e4460d
[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/yakovs83/civics_test:/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] 9268752e6fe333910eb5ca81186029002ae04e62d90481180554639a2f7ff4f9
[INFO] running `"docker" "start" "-a" "9268752e6fe333910eb5ca81186029002ae04e62d90481180554639a2f7ff4f9"`
[INFO] [stderr]    Compiling civics_test v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:56:9
[INFO] [stderr]    |
[INFO] [stderr] 56 |         io::stdin().read_line(&mut input);
[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 1.09s
[INFO] running `"docker" "inspect" "9268752e6fe333910eb5ca81186029002ae04e62d90481180554639a2f7ff4f9"`
[INFO] running `"docker" "rm" "-f" "9268752e6fe333910eb5ca81186029002ae04e62d90481180554639a2f7ff4f9"`
[INFO] [stdout] 9268752e6fe333910eb5ca81186029002ae04e62d90481180554639a2f7ff4f9
[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/yakovs83/civics_test:/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] c443d72c7f1a96fa2d3b9bf56c550cfc8596b5da8e53771e40f55d4b362a4cbf
[INFO] running `"docker" "start" "-a" "c443d72c7f1a96fa2d3b9bf56c550cfc8596b5da8e53771e40f55d4b362a4cbf"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/civics_test-7fdfd78e3f45a223
[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" "c443d72c7f1a96fa2d3b9bf56c550cfc8596b5da8e53771e40f55d4b362a4cbf"`
[INFO] running `"docker" "rm" "-f" "c443d72c7f1a96fa2d3b9bf56c550cfc8596b5da8e53771e40f55d4b362a4cbf"`
[INFO] [stdout] c443d72c7f1a96fa2d3b9bf56c550cfc8596b5da8e53771e40f55d4b362a4cbf