[INFO] updating cached repository demurgos/detect-desktop-environment
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/demurgos/detect-desktop-environment
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/demurgos/detect-desktop-environment" "work/ex/beta-1.38-1/sources/1.37.0/gh/demurgos/detect-desktop-environment"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/demurgos/detect-desktop-environment'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/demurgos/detect-desktop-environment" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/demurgos/detect-desktop-environment"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/demurgos/detect-desktop-environment'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d6bcd24aca61957c9c4b8e18f058036fa33a2a7f
[INFO] sha for GitHub repo demurgos/detect-desktop-environment: d6bcd24aca61957c9c4b8e18f058036fa33a2a7f
[INFO] validating manifest of demurgos/detect-desktop-environment 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 demurgos/detect-desktop-environment 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 demurgos/detect-desktop-environment
[INFO] finished frobbing demurgos/detect-desktop-environment
[INFO] frobbed toml for demurgos/detect-desktop-environment written to work/ex/beta-1.38-1/sources/1.37.0/gh/demurgos/detect-desktop-environment/Cargo.toml
[INFO] started frobbing demurgos/detect-desktop-environment
[INFO] finished frobbing demurgos/detect-desktop-environment
[INFO] frobbed toml for demurgos/detect-desktop-environment written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/demurgos/detect-desktop-environment/Cargo.toml
[INFO] crate demurgos/detect-desktop-environment 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 demurgos/detect-desktop-environment 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/demurgos/detect-desktop-environment:/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] 8edc65f0710ca7eb6b40c0b391f2f3dc05e486f2352a5ae1359c9c667295a322
[INFO] running `"docker" "start" "-a" "8edc65f0710ca7eb6b40c0b391f2f3dc05e486f2352a5ae1359c9c667295a322"`
[INFO] [stderr]    Compiling detect-desktop-environment v0.2.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.33s
[INFO] running `"docker" "inspect" "8edc65f0710ca7eb6b40c0b391f2f3dc05e486f2352a5ae1359c9c667295a322"`
[INFO] running `"docker" "rm" "-f" "8edc65f0710ca7eb6b40c0b391f2f3dc05e486f2352a5ae1359c9c667295a322"`
[INFO] [stdout] 8edc65f0710ca7eb6b40c0b391f2f3dc05e486f2352a5ae1359c9c667295a322
[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/demurgos/detect-desktop-environment:/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" "test" "--frozen" "--no-run"`
[INFO] [stdout] 775acc17f4532fcb8592aef5ccb98c88075bc7f6d8a3eecaf201b019a28bfbeb
[INFO] running `"docker" "start" "-a" "775acc17f4532fcb8592aef5ccb98c88075bc7f6d8a3eecaf201b019a28bfbeb"`
[INFO] [stderr]    Compiling detect-desktop-environment v0.2.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `"docker" "inspect" "775acc17f4532fcb8592aef5ccb98c88075bc7f6d8a3eecaf201b019a28bfbeb"`
[INFO] running `"docker" "rm" "-f" "775acc17f4532fcb8592aef5ccb98c88075bc7f6d8a3eecaf201b019a28bfbeb"`
[INFO] [stdout] 775acc17f4532fcb8592aef5ccb98c88075bc7f6d8a3eecaf201b019a28bfbeb
[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/demurgos/detect-desktop-environment:/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" "test" "--frozen"`
[INFO] [stdout] d221f5ae15d9d1272b9666f15dbde1b4e1f6f378468ed1ebb45671dedd2bb08a
[INFO] running `"docker" "start" "-a" "d221f5ae15d9d1272b9666f15dbde1b4e1f6f378468ed1ebb45671dedd2bb08a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/detect_desktop_environment-81a270ac7b10da9c
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/detect_desktop_environment-ab7f4c942530dd59
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests detect_desktop_environment
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "d221f5ae15d9d1272b9666f15dbde1b4e1f6f378468ed1ebb45671dedd2bb08a"`
[INFO] running `"docker" "rm" "-f" "d221f5ae15d9d1272b9666f15dbde1b4e1f6f378468ed1ebb45671dedd2bb08a"`
[INFO] [stdout] d221f5ae15d9d1272b9666f15dbde1b4e1f6f378468ed1ebb45671dedd2bb08a