Dec 11 07:45:44.690 INFO checking timglabisch/mysql_schema_change_rsu against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 07:45:44.690 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-7/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +3a75e80557a103497cffbcab395a2f37061a77ea-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 11 07:45:45.144 INFO [stdout] 3ff4192e30b2fef6f3629ef0899e527cc52b5fd14161b44aa3c9fcbb1944f65f
Dec 11 07:45:45.152 INFO running `"docker" "start" "-a" "3ff4192e30b2fef6f3629ef0899e527cc52b5fd14161b44aa3c9fcbb1944f65f"`
Dec 11 07:45:47.412 INFO [stderr] usermod: no changes
Dec 11 07:45:47.642 INFO [stderr]     Checking serde v1.0.16
Dec 11 07:45:47.642 INFO [stderr]     Checking atoi v0.2.2
Dec 11 07:45:47.642 INFO [stderr]     Checking memchr v1.0.2
Dec 11 07:45:47.642 INFO [stderr]     Checking time v0.1.38
Dec 11 07:45:47.647 INFO [stderr]     Checking nix v0.9.0
Dec 11 07:45:47.647 INFO [stderr]     Checking net2 v0.2.31
Dec 11 07:45:47.648 INFO [stderr]     Checking twox-hash v1.1.0
Dec 11 07:45:47.653 INFO [stderr]     Checking thread_local v0.3.4
Dec 11 07:45:49.238 INFO [stderr]     Checking num v0.1.40
Dec 11 07:45:49.525 INFO [stderr]     Checking aho-corasick v0.6.3
Dec 11 07:45:50.118 INFO [stderr]    Compiling serde_derive v1.0.16
Dec 11 07:45:52.020 INFO [stderr]     Checking chrono v0.4.0
Dec 11 07:45:52.674 INFO [stderr]     Checking regex v0.2.2
Dec 11 07:46:12.640 INFO [stderr]     Checking serde_json v1.0.5
Dec 11 07:46:12.640 INFO [stderr]     Checking toml v0.4.5
Dec 11 07:46:15.808 INFO [stderr]     Checking mysql_common v0.2.0
Dec 11 07:46:18.546 INFO [stderr]     Checking mysql v12.0.3
Dec 11 07:46:20.720 INFO [stderr]     Checking mysql_schema_change_rsu v0.1.0 (/source)
Dec 11 07:46:21.520 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 07:46:21.520 INFO [stderr]   --> src/config.rs:48:9
Dec 11 07:46:21.520 INFO [stderr]    |
Dec 11 07:46:21.520 INFO [stderr] 48 |         file.read_to_string(&mut buf);
Dec 11 07:46:21.520 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 07:46:21.520 INFO [stderr]    |
Dec 11 07:46:21.520 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 11 07:46:21.520 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 07:46:21.520 INFO [stderr] 
Dec 11 07:46:21.544 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 07:46:21.544 INFO [stderr]   --> src/config.rs:48:9
Dec 11 07:46:21.544 INFO [stderr]    |
Dec 11 07:46:21.544 INFO [stderr] 48 |         file.read_to_string(&mut buf);
Dec 11 07:46:21.544 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 07:46:21.544 INFO [stderr]    |
Dec 11 07:46:21.544 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 11 07:46:21.544 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 07:46:21.544 INFO [stderr] 
Dec 11 07:46:21.568 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.13s
Dec 11 07:46:21.612 INFO [stderr] su: No module specific data is present
Dec 11 07:46:22.242 INFO running `"docker" "inspect" "3ff4192e30b2fef6f3629ef0899e527cc52b5fd14161b44aa3c9fcbb1944f65f"`
Dec 11 07:46:22.542 INFO running `"docker" "rm" "-f" "3ff4192e30b2fef6f3629ef0899e527cc52b5fd14161b44aa3c9fcbb1944f65f"`
Dec 11 07:46:22.803 INFO [stdout] 3ff4192e30b2fef6f3629ef0899e527cc52b5fd14161b44aa3c9fcbb1944f65f