[INFO] updating cached repository ryota0624/diesel-struct-generator
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ryota0624/diesel-struct-generator
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ryota0624/diesel-struct-generator" "work/ex/beta-1.38-1/sources/1.37.0/gh/ryota0624/diesel-struct-generator"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/ryota0624/diesel-struct-generator'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ryota0624/diesel-struct-generator" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ryota0624/diesel-struct-generator"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ryota0624/diesel-struct-generator'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 545fa957afc3da2fe962c2f906b293530d22bb0f
[INFO] sha for GitHub repo ryota0624/diesel-struct-generator: 545fa957afc3da2fe962c2f906b293530d22bb0f
[INFO] validating manifest of ryota0624/diesel-struct-generator 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 ryota0624/diesel-struct-generator 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 ryota0624/diesel-struct-generator
[INFO] finished frobbing ryota0624/diesel-struct-generator
[INFO] frobbed toml for ryota0624/diesel-struct-generator written to work/ex/beta-1.38-1/sources/1.37.0/gh/ryota0624/diesel-struct-generator/Cargo.toml
[INFO] started frobbing ryota0624/diesel-struct-generator
[INFO] finished frobbing ryota0624/diesel-struct-generator
[INFO] frobbed toml for ryota0624/diesel-struct-generator written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ryota0624/diesel-struct-generator/Cargo.toml
[INFO] crate ryota0624/diesel-struct-generator 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 ryota0624/diesel-struct-generator 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-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ryota0624/diesel-struct-generator:/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] 96cf3b0cc28e70d69a8dfbfbdf0794d98094ec1b7a2eac1f8cc6e8bf7d3a3c1f
[INFO] running `"docker" "start" "-a" "96cf3b0cc28e70d69a8dfbfbdf0794d98094ec1b7a2eac1f8cc6e8bf7d3a3c1f"`
[INFO] [stderr]    Compiling smallvec v0.4.5
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling memchr v2.0.2
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling atoi v0.2.2
[INFO] [stderr]    Compiling nix v0.9.0
[INFO] [stderr]    Compiling twox-hash v1.1.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling backtrace v0.3.9
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling aho-corasick v0.6.8
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling failure v0.1.2
[INFO] [stderr]    Compiling regex v0.2.5
[INFO] [stderr]    Compiling regex v1.0.4
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]    Compiling mysql_common v0.5.0
[INFO] [stderr]    Compiling dotenv v0.13.0
[INFO] [stderr]    Compiling dotenv v0.8.0
[INFO] [stderr]    Compiling dotenv_codegen_impl v0.1.0
[INFO] [stderr]    Compiling dotenv_codegen v0.11.0
[INFO] [stderr]    Compiling mysql v12.1.0
[INFO] [stderr]    Compiling rust_diesel_struct_generator v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error: proc-macro derive panicked
[INFO] [stderr]   --> src/main.rs:23:16
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let user = dotenv!("DB_USER");
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: message: environment variable `DB_USER` not defined
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rust_diesel_struct_generator`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "96cf3b0cc28e70d69a8dfbfbdf0794d98094ec1b7a2eac1f8cc6e8bf7d3a3c1f"`
[INFO] running `"docker" "rm" "-f" "96cf3b0cc28e70d69a8dfbfbdf0794d98094ec1b7a2eac1f8cc6e8bf7d3a3c1f"`
[INFO] [stdout] 96cf3b0cc28e70d69a8dfbfbdf0794d98094ec1b7a2eac1f8cc6e8bf7d3a3c1f