[INFO] updating cached repository Chiiruno/rust_playground
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Chiiruno/rust_playground
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Chiiruno/rust_playground" "work/ex/beta-1.38-1/sources/1.37.0/gh/Chiiruno/rust_playground"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Chiiruno/rust_playground'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Chiiruno/rust_playground" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Chiiruno/rust_playground"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Chiiruno/rust_playground'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 16f4f0bdeb008b519c98f821e523ec81df70b624
[INFO] sha for GitHub repo Chiiruno/rust_playground: 16f4f0bdeb008b519c98f821e523ec81df70b624
[INFO] validating manifest of Chiiruno/rust_playground 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 Chiiruno/rust_playground 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 Chiiruno/rust_playground
[INFO] finished frobbing Chiiruno/rust_playground
[INFO] frobbed toml for Chiiruno/rust_playground written to work/ex/beta-1.38-1/sources/1.37.0/gh/Chiiruno/rust_playground/Cargo.toml
[INFO] started frobbing Chiiruno/rust_playground
[INFO] finished frobbing Chiiruno/rust_playground
[INFO] frobbed toml for Chiiruno/rust_playground written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Chiiruno/rust_playground/Cargo.toml
[INFO] crate Chiiruno/rust_playground 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 Chiiruno/rust_playground 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/Chiiruno/rust_playground:/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] 8fd9575d1ecc671d6e6a9cb19906a798a7267e839f70ce58712dd05a77a5888f
[INFO] running `"docker" "start" "-a" "8fd9575d1ecc671d6e6a9cb19906a798a7267e839f70ce58712dd05a77a5888f"`
[INFO] [stderr]    Compiling rust_playground v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `"docker" "inspect" "8fd9575d1ecc671d6e6a9cb19906a798a7267e839f70ce58712dd05a77a5888f"`
[INFO] running `"docker" "rm" "-f" "8fd9575d1ecc671d6e6a9cb19906a798a7267e839f70ce58712dd05a77a5888f"`
[INFO] [stdout] 8fd9575d1ecc671d6e6a9cb19906a798a7267e839f70ce58712dd05a77a5888f
[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/Chiiruno/rust_playground:/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] 32cc6f8dcc5f74cd9ea58149653d3d930da07ac5b47e26666453a523e39447b0
[INFO] running `"docker" "start" "-a" "32cc6f8dcc5f74cd9ea58149653d3d930da07ac5b47e26666453a523e39447b0"`
[INFO] [stderr]    Compiling rust_playground v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `"docker" "inspect" "32cc6f8dcc5f74cd9ea58149653d3d930da07ac5b47e26666453a523e39447b0"`
[INFO] running `"docker" "rm" "-f" "32cc6f8dcc5f74cd9ea58149653d3d930da07ac5b47e26666453a523e39447b0"`
[INFO] [stdout] 32cc6f8dcc5f74cd9ea58149653d3d930da07ac5b47e26666453a523e39447b0
[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/Chiiruno/rust_playground:/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] 89cc55c3e6f52b1193049ff06f6bfbb89af387ef18f73afdf57246a9ee024cdd
[INFO] running `"docker" "start" "-a" "89cc55c3e6f52b1193049ff06f6bfbb89af387ef18f73afdf57246a9ee024cdd"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_playground-87c6ab59dd2b2a42
[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" "89cc55c3e6f52b1193049ff06f6bfbb89af387ef18f73afdf57246a9ee024cdd"`
[INFO] running `"docker" "rm" "-f" "89cc55c3e6f52b1193049ff06f6bfbb89af387ef18f73afdf57246a9ee024cdd"`
[INFO] [stdout] 89cc55c3e6f52b1193049ff06f6bfbb89af387ef18f73afdf57246a9ee024cdd