[INFO] updating cached repository https://github.com/vibhoothiiaanand/potato_rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9818784268bf6b4a2e6a9abd761464f156159e06
[INFO] testing vibhoothiiaanand/potato_rust against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvibhoothiiaanand%2Fpotato_rust" "work/builds/worker-3/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vibhoothiiaanand/potato_rust on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/vibhoothiiaanand/potato_rust
[INFO] finished tweaking git repo https://github.com/vibhoothiiaanand/potato_rust
[INFO] tweaked toml for git repo https://github.com/vibhoothiiaanand/potato_rust written to work/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/vibhoothiiaanand/potato_rust already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /big/crater/work/builds/worker-3/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] 119667af6f7c655c6e5386cef58a72ccdc6c3c5a75f5192b767f5cb8f3c58a0e
[INFO] running `"docker" "start" "-a" "119667af6f7c655c6e5386cef58a72ccdc6c3c5a75f5192b767f5cb8f3c58a0e"`
[INFO] [stderr]    Compiling potato_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `"docker" "inspect" "119667af6f7c655c6e5386cef58a72ccdc6c3c5a75f5192b767f5cb8f3c58a0e"`
[INFO] running `"docker" "rm" "-f" "119667af6f7c655c6e5386cef58a72ccdc6c3c5a75f5192b767f5cb8f3c58a0e"`
[INFO] [stdout] 119667af6f7c655c6e5386cef58a72ccdc6c3c5a75f5192b767f5cb8f3c58a0e
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] a2d073e3cf97fba4a4fb1601cda746cc4c9c80ac8e3929189ad1feee47f18aaa
[INFO] running `"docker" "start" "-a" "a2d073e3cf97fba4a4fb1601cda746cc4c9c80ac8e3929189ad1feee47f18aaa"`
[INFO] [stderr]    Compiling potato_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `"docker" "inspect" "a2d073e3cf97fba4a4fb1601cda746cc4c9c80ac8e3929189ad1feee47f18aaa"`
[INFO] running `"docker" "rm" "-f" "a2d073e3cf97fba4a4fb1601cda746cc4c9c80ac8e3929189ad1feee47f18aaa"`
[INFO] [stdout] a2d073e3cf97fba4a4fb1601cda746cc4c9c80ac8e3929189ad1feee47f18aaa
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen"`
[INFO] [stdout] b12e6d8c8d595125362de622504d7a9b53bebddc06a2c0f63f81a8a53134702e
[INFO] running `"docker" "start" "-a" "b12e6d8c8d595125362de622504d7a9b53bebddc06a2c0f63f81a8a53134702e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/potato_rust-578dcbabf1c13e27
[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" "b12e6d8c8d595125362de622504d7a9b53bebddc06a2c0f63f81a8a53134702e"`
[INFO] running `"docker" "rm" "-f" "b12e6d8c8d595125362de622504d7a9b53bebddc06a2c0f63f81a8a53134702e"`
[INFO] [stdout] b12e6d8c8d595125362de622504d7a9b53bebddc06a2c0f63f81a8a53134702e