[INFO] updating cached repository yoshuawuyts/playground-failure
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/yoshuawuyts/playground-failure
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/yoshuawuyts/playground-failure" "work/ex/beta-1.37-6/sources/1.36.0/gh/yoshuawuyts/playground-failure"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/yoshuawuyts/playground-failure'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/yoshuawuyts/playground-failure" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/yoshuawuyts/playground-failure"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/yoshuawuyts/playground-failure'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 323bcd379523119b67f27c84d459296673ac2e67
[INFO] sha for GitHub repo yoshuawuyts/playground-failure: 323bcd379523119b67f27c84d459296673ac2e67
[INFO] validating manifest of yoshuawuyts/playground-failure on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of yoshuawuyts/playground-failure on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing yoshuawuyts/playground-failure
[INFO] finished frobbing yoshuawuyts/playground-failure
[INFO] frobbed toml for yoshuawuyts/playground-failure written to work/ex/beta-1.37-6/sources/1.36.0/gh/yoshuawuyts/playground-failure/Cargo.toml
[INFO] started frobbing yoshuawuyts/playground-failure
[INFO] finished frobbing yoshuawuyts/playground-failure
[INFO] frobbed toml for yoshuawuyts/playground-failure written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/yoshuawuyts/playground-failure/Cargo.toml
[INFO] crate yoshuawuyts/playground-failure already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing yoshuawuyts/playground-failure against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/yoshuawuyts/playground-failure:/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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 24ece54a967801b21df8de6806a96a69fb674c287da9ecb99b59ff1fc7c94959
[INFO] running `"docker" "start" "-a" "24ece54a967801b21df8de6806a96a69fb674c287da9ecb99b59ff1fc7c94959"`
[INFO] [stderr]    Compiling cc v1.0.4
[INFO] [stderr]    Compiling libc v0.2.36
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]    Compiling backtrace v0.3.5
[INFO] [stderr]    Compiling failure v0.1.1
[INFO] [stderr]    Compiling playground-failure v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.62s
[INFO] running `"docker" "inspect" "24ece54a967801b21df8de6806a96a69fb674c287da9ecb99b59ff1fc7c94959"`
[INFO] running `"docker" "rm" "-f" "24ece54a967801b21df8de6806a96a69fb674c287da9ecb99b59ff1fc7c94959"`
[INFO] [stdout] 24ece54a967801b21df8de6806a96a69fb674c287da9ecb99b59ff1fc7c94959
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/yoshuawuyts/playground-failure:/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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] bc0044aff1a760712f536e92565ae1727daf838b7e71abad74d1e1d5b3b96d87
[INFO] running `"docker" "start" "-a" "bc0044aff1a760712f536e92565ae1727daf838b7e71abad74d1e1d5b3b96d87"`
[INFO] [stderr]    Compiling playground-failure v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `"docker" "inspect" "bc0044aff1a760712f536e92565ae1727daf838b7e71abad74d1e1d5b3b96d87"`
[INFO] running `"docker" "rm" "-f" "bc0044aff1a760712f536e92565ae1727daf838b7e71abad74d1e1d5b3b96d87"`
[INFO] [stdout] bc0044aff1a760712f536e92565ae1727daf838b7e71abad74d1e1d5b3b96d87
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/yoshuawuyts/playground-failure:/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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 1cb25ce83b19364db60a4921bd60a2d7a52c5c4c9eb38783c3fbae8006e14eff
[INFO] running `"docker" "start" "-a" "1cb25ce83b19364db60a4921bd60a2d7a52c5c4c9eb38783c3fbae8006e14eff"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/lib-450d72d681864089
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/playground_failure-067e4d034e165953
[INFO] [stderr]    Doc-tests lib
[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] [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" "1cb25ce83b19364db60a4921bd60a2d7a52c5c4c9eb38783c3fbae8006e14eff"`
[INFO] running `"docker" "rm" "-f" "1cb25ce83b19364db60a4921bd60a2d7a52c5c4c9eb38783c3fbae8006e14eff"`
[INFO] [stdout] 1cb25ce83b19364db60a4921bd60a2d7a52c5c4c9eb38783c3fbae8006e14eff