Dec 17 13:36:49.969 INFO checking timglabisch/mysql_schema_change_rsu against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 13:36:49.969 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/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=forbid" "-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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 13:36:50.446 INFO [stdout] 66681761f948caea8eacde1a99daec05eb42bb98b47b00932faff0c641bce5d5
Dec 17 13:36:50.448 INFO running `"docker" "start" "-a" "66681761f948caea8eacde1a99daec05eb42bb98b47b00932faff0c641bce5d5"`
Dec 17 13:36:52.464 INFO [stderr]     Checking serde v1.0.16
Dec 17 13:36:52.476 INFO [stderr]     Checking bit-vec v0.4.4
Dec 17 13:36:52.492 INFO [stderr]     Checking bufstream v0.1.3
Dec 17 13:36:52.496 INFO [stderr]     Checking atoi v0.2.2
Dec 17 13:36:52.496 INFO [stderr]     Checking memchr v1.0.2
Dec 17 13:36:52.498 INFO [stderr]     Checking rand v0.3.17
Dec 17 13:36:52.500 INFO [stderr]     Checking net2 v0.2.31
Dec 17 13:36:52.501 INFO [stderr]     Checking nix v0.9.0
Dec 17 13:36:53.681 INFO [stderr]     Checking thread_local v0.3.4
Dec 17 13:36:54.097 INFO [stderr]     Checking clap v2.27.1
Dec 17 13:36:54.128 INFO [stderr]     Checking aho-corasick v0.6.3
Dec 17 13:36:55.318 INFO [stderr]    Compiling serde_derive_internals v0.16.0
Dec 17 13:36:56.988 INFO [stderr]     Checking regex v0.2.2
Dec 17 13:36:59.168 INFO [stderr]     Checking twox-hash v1.1.0
Dec 17 13:37:03.533 INFO [stderr]    Compiling serde_derive v1.0.16
Dec 17 13:37:24.928 INFO [stderr]     Checking serde_json v1.0.5
Dec 17 13:37:24.930 INFO [stderr]     Checking toml v0.4.5
Dec 17 13:37:28.324 INFO [stderr]     Checking mysql_common v0.2.0
Dec 17 13:37:30.858 INFO [stderr]     Checking mysql v12.0.3
Dec 17 13:37:33.037 INFO [stderr]     Checking mysql_schema_change_rsu v0.1.0 (/opt/crater/workdir)
Dec 17 13:37:33.840 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 13:37:33.841 INFO [stderr]   --> src/config.rs:48:9
Dec 17 13:37:33.841 INFO [stderr]    |
Dec 17 13:37:33.841 INFO [stderr] 48 |         file.read_to_string(&mut buf);
Dec 17 13:37:33.842 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 13:37:33.842 INFO [stderr]    |
Dec 17 13:37:33.842 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 13:37:33.842 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 13:37:33.843 INFO [stderr] 
Dec 17 13:37:33.846 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 13:37:33.846 INFO [stderr]   --> src/config.rs:48:9
Dec 17 13:37:33.846 INFO [stderr]    |
Dec 17 13:37:33.846 INFO [stderr] 48 |         file.read_to_string(&mut buf);
Dec 17 13:37:33.846 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 13:37:33.846 INFO [stderr]    |
Dec 17 13:37:33.846 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 13:37:33.846 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 13:37:33.846 INFO [stderr] 
Dec 17 13:37:33.916 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 41.67s
Dec 17 13:37:35.833 INFO running `"docker" "inspect" "66681761f948caea8eacde1a99daec05eb42bb98b47b00932faff0c641bce5d5"`
Dec 17 13:37:36.174 INFO running `"docker" "rm" "-f" "66681761f948caea8eacde1a99daec05eb42bb98b47b00932faff0c641bce5d5"`
Dec 17 13:37:36.561 INFO [stdout] 66681761f948caea8eacde1a99daec05eb42bb98b47b00932faff0c641bce5d5