[INFO] updating cached repository brainstorm/dotenv-codegen-rustc-hang
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/brainstorm/dotenv-codegen-rustc-hang
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/brainstorm/dotenv-codegen-rustc-hang" "work/ex/beta-1.38-1/sources/1.37.0/gh/brainstorm/dotenv-codegen-rustc-hang"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/brainstorm/dotenv-codegen-rustc-hang'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/brainstorm/dotenv-codegen-rustc-hang" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/brainstorm/dotenv-codegen-rustc-hang"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/brainstorm/dotenv-codegen-rustc-hang'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b7cc3ddc744ce5be3b435ee519170f9fd9ffe282
[INFO] sha for GitHub repo brainstorm/dotenv-codegen-rustc-hang: b7cc3ddc744ce5be3b435ee519170f9fd9ffe282
[INFO] validating manifest of brainstorm/dotenv-codegen-rustc-hang 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 brainstorm/dotenv-codegen-rustc-hang 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 brainstorm/dotenv-codegen-rustc-hang
[INFO] finished frobbing brainstorm/dotenv-codegen-rustc-hang
[INFO] frobbed toml for brainstorm/dotenv-codegen-rustc-hang written to work/ex/beta-1.38-1/sources/1.37.0/gh/brainstorm/dotenv-codegen-rustc-hang/Cargo.toml
[INFO] started frobbing brainstorm/dotenv-codegen-rustc-hang
[INFO] finished frobbing brainstorm/dotenv-codegen-rustc-hang
[INFO] frobbed toml for brainstorm/dotenv-codegen-rustc-hang written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/brainstorm/dotenv-codegen-rustc-hang/Cargo.toml
[INFO] crate brainstorm/dotenv-codegen-rustc-hang 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 brainstorm/dotenv-codegen-rustc-hang 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-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/brainstorm/dotenv-codegen-rustc-hang:/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] db8488b44354875ee595283f4f15f0f714be46eb548aa4d1cca78e50704571e1
[INFO] running `"docker" "start" "-a" "db8488b44354875ee595283f4f15f0f714be46eb548aa4d1cca78e50704571e1"`
[INFO] [stderr]    Compiling backtrace-sys v0.1.29
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling proc-macro-hack v0.5.7
[INFO] [stderr]    Compiling backtrace v0.3.32
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling dotenv v0.14.1
[INFO] [stderr]    Compiling dotenv_codegen_implementation v0.14.1
[INFO] [stderr]    Compiling dotenv_codegen v0.14.1
[INFO] [stderr]    Compiling dotenv-codegen-rustc-hang v0.1.0 (/opt/crater/workdir)
[ERROR] error running command: no output for 300 seconds
[INFO] running `"docker" "inspect" "db8488b44354875ee595283f4f15f0f714be46eb548aa4d1cca78e50704571e1"`
[INFO] running `"docker" "rm" "-f" "db8488b44354875ee595283f4f15f0f714be46eb548aa4d1cca78e50704571e1"`
[INFO] [stdout] db8488b44354875ee595283f4f15f0f714be46eb548aa4d1cca78e50704571e1