[INFO] updating cached repository whostolemyhat/snowflakes
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/whostolemyhat/snowflakes
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/whostolemyhat/snowflakes" "work/ex/beta-1.38-1/sources/1.37.0/gh/whostolemyhat/snowflakes"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/whostolemyhat/snowflakes'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/whostolemyhat/snowflakes" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/whostolemyhat/snowflakes"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/whostolemyhat/snowflakes'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 583546befdc15b4b1a7d65b472f4751b0ca07013
[INFO] sha for GitHub repo whostolemyhat/snowflakes: 583546befdc15b4b1a7d65b472f4751b0ca07013
[INFO] validating manifest of whostolemyhat/snowflakes 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 whostolemyhat/snowflakes 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 whostolemyhat/snowflakes
[INFO] finished frobbing whostolemyhat/snowflakes
[INFO] frobbed toml for whostolemyhat/snowflakes written to work/ex/beta-1.38-1/sources/1.37.0/gh/whostolemyhat/snowflakes/Cargo.toml
[INFO] started frobbing whostolemyhat/snowflakes
[INFO] finished frobbing whostolemyhat/snowflakes
[INFO] frobbed toml for whostolemyhat/snowflakes written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/whostolemyhat/snowflakes/Cargo.toml
[INFO] crate whostolemyhat/snowflakes 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 whostolemyhat/snowflakes 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/whostolemyhat/snowflakes:/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] 52671a50b3fccfa293087b67324d231bbb6fe590928e89890f300f55322f5385
[INFO] running `"docker" "start" "-a" "52671a50b3fccfa293087b67324d231bbb6fe590928e89890f300f55322f5385"`
[INFO] [stderr]    Compiling cairo-rs v0.3.0
[INFO] [stderr]    Compiling c_vec v1.2.1
[INFO] [stderr]    Compiling glib-sys v0.5.0
[INFO] [stderr]    Compiling gobject-sys v0.5.0
[INFO] [stderr]    Compiling cairo-sys-rs v0.5.0
[INFO] [stderr]    Compiling glib v0.4.1
[INFO] [stderr]    Compiling snowflake v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.87s
[INFO] running `"docker" "inspect" "52671a50b3fccfa293087b67324d231bbb6fe590928e89890f300f55322f5385"`
[INFO] running `"docker" "rm" "-f" "52671a50b3fccfa293087b67324d231bbb6fe590928e89890f300f55322f5385"`
[INFO] [stdout] 52671a50b3fccfa293087b67324d231bbb6fe590928e89890f300f55322f5385
[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/whostolemyhat/snowflakes:/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] c69d63ff8f0664c00012a9a8a974614b4e632e55b14f3c545518de4ca1ef93b2
[INFO] running `"docker" "start" "-a" "c69d63ff8f0664c00012a9a8a974614b4e632e55b14f3c545518de4ca1ef93b2"`
[INFO] [stderr]    Compiling snowflake v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.40s
[INFO] running `"docker" "inspect" "c69d63ff8f0664c00012a9a8a974614b4e632e55b14f3c545518de4ca1ef93b2"`
[INFO] running `"docker" "rm" "-f" "c69d63ff8f0664c00012a9a8a974614b4e632e55b14f3c545518de4ca1ef93b2"`
[INFO] [stdout] c69d63ff8f0664c00012a9a8a974614b4e632e55b14f3c545518de4ca1ef93b2
[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/whostolemyhat/snowflakes:/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] a4840d36a64c9fb8fddf910ea1eda5e03e0be395d39b2a82fb191c43742697e8
[INFO] running `"docker" "start" "-a" "a4840d36a64c9fb8fddf910ea1eda5e03e0be395d39b2a82fb191c43742697e8"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/snowflake-e5f043e0af9e575d
[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/main-ad5a0a3a2ae1202a
[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 snowflake
[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" "a4840d36a64c9fb8fddf910ea1eda5e03e0be395d39b2a82fb191c43742697e8"`
[INFO] running `"docker" "rm" "-f" "a4840d36a64c9fb8fddf910ea1eda5e03e0be395d39b2a82fb191c43742697e8"`
[INFO] [stdout] a4840d36a64c9fb8fddf910ea1eda5e03e0be395d39b2a82fb191c43742697e8