[INFO] updating cached repository timglabisch/mysql_schema_change_rsu
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/timglabisch/mysql_schema_change_rsu
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/timglabisch/mysql_schema_change_rsu" "work/ex/beta-1.38-1/sources/1.37.0/gh/timglabisch/mysql_schema_change_rsu"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/timglabisch/mysql_schema_change_rsu'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/timglabisch/mysql_schema_change_rsu" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/timglabisch/mysql_schema_change_rsu"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/timglabisch/mysql_schema_change_rsu'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1e0ad37339a6327c4cbe3f67e2e810eeb544e907
[INFO] sha for GitHub repo timglabisch/mysql_schema_change_rsu: 1e0ad37339a6327c4cbe3f67e2e810eeb544e907
[INFO] validating manifest of timglabisch/mysql_schema_change_rsu 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 timglabisch/mysql_schema_change_rsu 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 timglabisch/mysql_schema_change_rsu
[INFO] finished frobbing timglabisch/mysql_schema_change_rsu
[INFO] frobbed toml for timglabisch/mysql_schema_change_rsu written to work/ex/beta-1.38-1/sources/1.37.0/gh/timglabisch/mysql_schema_change_rsu/Cargo.toml
[INFO] started frobbing timglabisch/mysql_schema_change_rsu
[INFO] finished frobbing timglabisch/mysql_schema_change_rsu
[INFO] frobbed toml for timglabisch/mysql_schema_change_rsu written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/timglabisch/mysql_schema_change_rsu/Cargo.toml
[INFO] crate timglabisch/mysql_schema_change_rsu 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing timglabisch/mysql_schema_change_rsu 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/timglabisch/mysql_schema_change_rsu:/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] 2893470ad3d9a906d7f80ab64b19fddafc9968ffcec655e4560f7a6e50f6dd04
[INFO] running `"docker" "start" "-a" "2893470ad3d9a906d7f80ab64b19fddafc9968ffcec655e4560f7a6e50f6dd04"`
[INFO] [stderr]    Compiling uuid v0.5.1
[INFO] [stderr]    Compiling atoi v0.2.2
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling rand v0.3.17
[INFO] [stderr]    Compiling serde_json v1.0.5
[INFO] [stderr]    Compiling nix v0.9.0
[INFO] [stderr]    Compiling serde_derive v1.0.16
[INFO] [stderr]    Compiling aho-corasick v0.6.3
[INFO] [stderr]    Compiling regex v0.2.2
[INFO] [stderr]    Compiling twox-hash v1.1.0
[INFO] [stderr]    Compiling mysql_common v0.2.0
[INFO] [stderr]    Compiling mysql v12.0.3
[INFO] [stderr]    Compiling mysql_schema_change_rsu v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/config.rs:48:9
[INFO] [stderr]    |
[INFO] [stderr] 48 |         file.read_to_string(&mut buf);
[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 43.51s
[INFO] running `"docker" "inspect" "2893470ad3d9a906d7f80ab64b19fddafc9968ffcec655e4560f7a6e50f6dd04"`
[INFO] running `"docker" "rm" "-f" "2893470ad3d9a906d7f80ab64b19fddafc9968ffcec655e4560f7a6e50f6dd04"`
[INFO] [stdout] 2893470ad3d9a906d7f80ab64b19fddafc9968ffcec655e4560f7a6e50f6dd04
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/timglabisch/mysql_schema_change_rsu:/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] 46f53d4a45021f2f19e9aacd4dd3964d9cbc3875c798d066b0aa94ae5c74fde0
[INFO] running `"docker" "start" "-a" "46f53d4a45021f2f19e9aacd4dd3964d9cbc3875c798d066b0aa94ae5c74fde0"`
[INFO] [stderr]    Compiling mysql_schema_change_rsu v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/config.rs:48:9
[INFO] [stderr]    |
[INFO] [stderr] 48 |         file.read_to_string(&mut buf);
[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 1.15s
[INFO] running `"docker" "inspect" "46f53d4a45021f2f19e9aacd4dd3964d9cbc3875c798d066b0aa94ae5c74fde0"`
[INFO] running `"docker" "rm" "-f" "46f53d4a45021f2f19e9aacd4dd3964d9cbc3875c798d066b0aa94ae5c74fde0"`
[INFO] [stdout] 46f53d4a45021f2f19e9aacd4dd3964d9cbc3875c798d066b0aa94ae5c74fde0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/timglabisch/mysql_schema_change_rsu:/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] 70e3a4e4d76aab065cfc951ac8a5c0803dc34a4488070759f66be15075c52587
[INFO] running `"docker" "start" "-a" "70e3a4e4d76aab065cfc951ac8a5c0803dc34a4488070759f66be15075c52587"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mysql_schema_change_rsu-f95e2c0775a6f385
[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" "70e3a4e4d76aab065cfc951ac8a5c0803dc34a4488070759f66be15075c52587"`
[INFO] running `"docker" "rm" "-f" "70e3a4e4d76aab065cfc951ac8a5c0803dc34a4488070759f66be15075c52587"`
[INFO] [stdout] 70e3a4e4d76aab065cfc951ac8a5c0803dc34a4488070759f66be15075c52587