[INFO] updating cached repository mwdowns/rust_dms_linker
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mwdowns/rust_dms_linker
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mwdowns/rust_dms_linker" "work/ex/beta-1.38-1/sources/1.37.0/gh/mwdowns/rust_dms_linker"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/mwdowns/rust_dms_linker'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mwdowns/rust_dms_linker" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mwdowns/rust_dms_linker"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mwdowns/rust_dms_linker'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ffc5628e85137902272ef0a18717d5a43eb4bd64
[INFO] sha for GitHub repo mwdowns/rust_dms_linker: ffc5628e85137902272ef0a18717d5a43eb4bd64
[INFO] validating manifest of mwdowns/rust_dms_linker 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 mwdowns/rust_dms_linker 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 mwdowns/rust_dms_linker
[INFO] finished frobbing mwdowns/rust_dms_linker
[INFO] frobbed toml for mwdowns/rust_dms_linker written to work/ex/beta-1.38-1/sources/1.37.0/gh/mwdowns/rust_dms_linker/Cargo.toml
[INFO] started frobbing mwdowns/rust_dms_linker
[INFO] finished frobbing mwdowns/rust_dms_linker
[INFO] frobbed toml for mwdowns/rust_dms_linker written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mwdowns/rust_dms_linker/Cargo.toml
[INFO] crate mwdowns/rust_dms_linker 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 mwdowns/rust_dms_linker 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mwdowns/rust_dms_linker:/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] b326985e5b5c5e5ec46c1b6cbb7bf441c1cb22b74b7cd21c0234a6ae172327e4
[INFO] running `"docker" "start" "-a" "b326985e5b5c5e5ec46c1b6cbb7bf441c1cb22b74b7cd21c0234a6ae172327e4"`
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling atoi v0.2.3
[INFO] [stderr]    Compiling serde_json v1.0.11
[INFO] [stderr]    Compiling crossbeam-epoch v0.4.0
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]    Compiling twox-hash v1.1.0
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling chrono v0.4.0
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling backtrace v0.3.5
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling crossbeam-deque v0.3.0
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]    Compiling error-chain v0.11.0
[INFO] [stderr]    Compiling tokio-threadpool v0.1.0
[INFO] [stderr]    Compiling tokio v0.1.3
[INFO] [stderr]    Compiling mysql_common v0.4.0
[INFO] [stderr]    Compiling tokio-core v0.1.14
[INFO] [stderr]    Compiling derive-error-chain v0.11.0
[INFO] [stderr]    Compiling dotenv v0.8.0
[INFO] [stderr]    Compiling dotenv_codegen_impl v0.1.0
[INFO] [stderr]    Compiling mysql_async v0.12.2
[INFO] [stderr]    Compiling dotenv v0.11.0
[INFO] [stderr]    Compiling dotenv_codegen v0.11.0
[INFO] [stderr]    Compiling rust_dms_linker v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error: proc-macro derive panicked
[INFO] [stderr]   --> src/main.rs:18:16
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let host = dotenv!("DB_HOST");
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: message: environment variable `DB_HOST` 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_dms_linker`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "b326985e5b5c5e5ec46c1b6cbb7bf441c1cb22b74b7cd21c0234a6ae172327e4"`
[INFO] running `"docker" "rm" "-f" "b326985e5b5c5e5ec46c1b6cbb7bf441c1cb22b74b7cd21c0234a6ae172327e4"`
[INFO] [stdout] b326985e5b5c5e5ec46c1b6cbb7bf441c1cb22b74b7cd21c0234a6ae172327e4