[INFO] updating cached repository PiotrTrzpil/rust-sandbox
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/PiotrTrzpil/rust-sandbox
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/PiotrTrzpil/rust-sandbox" "work/ex/beta-1.38-1/sources/1.37.0/gh/PiotrTrzpil/rust-sandbox"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/PiotrTrzpil/rust-sandbox'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/PiotrTrzpil/rust-sandbox" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/PiotrTrzpil/rust-sandbox"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/PiotrTrzpil/rust-sandbox'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f27f71da89db1522cd3ae7cfda835a022249a388
[INFO] sha for GitHub repo PiotrTrzpil/rust-sandbox: f27f71da89db1522cd3ae7cfda835a022249a388
[INFO] validating manifest of PiotrTrzpil/rust-sandbox 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 PiotrTrzpil/rust-sandbox 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 PiotrTrzpil/rust-sandbox
[INFO] finished frobbing PiotrTrzpil/rust-sandbox
[INFO] frobbed toml for PiotrTrzpil/rust-sandbox written to work/ex/beta-1.38-1/sources/1.37.0/gh/PiotrTrzpil/rust-sandbox/Cargo.toml
[INFO] started frobbing PiotrTrzpil/rust-sandbox
[INFO] finished frobbing PiotrTrzpil/rust-sandbox
[INFO] frobbed toml for PiotrTrzpil/rust-sandbox written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/PiotrTrzpil/rust-sandbox/Cargo.toml
[INFO] crate PiotrTrzpil/rust-sandbox 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] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/PiotrTrzpil/rust-sandbox/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 PiotrTrzpil/rust-sandbox 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/PiotrTrzpil/rust-sandbox:/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] ca1559274f96fb4be1c710cc68157f204ac89f9d6cc65a3301e7536090b4d436
[INFO] running `"docker" "start" "-a" "ca1559274f96fb4be1c710cc68157f204ac89f9d6cc65a3301e7536090b4d436"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rust-tutorial v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `"docker" "inspect" "ca1559274f96fb4be1c710cc68157f204ac89f9d6cc65a3301e7536090b4d436"`
[INFO] running `"docker" "rm" "-f" "ca1559274f96fb4be1c710cc68157f204ac89f9d6cc65a3301e7536090b4d436"`
[INFO] [stdout] ca1559274f96fb4be1c710cc68157f204ac89f9d6cc65a3301e7536090b4d436
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/PiotrTrzpil/rust-sandbox:/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] ae737882fdcc928dec2833b96483b65ba565ac395b64c72ed9d07bd61184e9d5
[INFO] running `"docker" "start" "-a" "ae737882fdcc928dec2833b96483b65ba565ac395b64c72ed9d07bd61184e9d5"`
[INFO] [stderr]    Compiling rust-tutorial v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `"docker" "inspect" "ae737882fdcc928dec2833b96483b65ba565ac395b64c72ed9d07bd61184e9d5"`
[INFO] running `"docker" "rm" "-f" "ae737882fdcc928dec2833b96483b65ba565ac395b64c72ed9d07bd61184e9d5"`
[INFO] [stdout] ae737882fdcc928dec2833b96483b65ba565ac395b64c72ed9d07bd61184e9d5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/PiotrTrzpil/rust-sandbox:/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] 2dc3a28630f465098f9f0faeb8e23b49c5cf3bc4a1e4d41c3e324b3394973e7a
[INFO] running `"docker" "start" "-a" "2dc3a28630f465098f9f0faeb8e23b49c5cf3bc4a1e4d41c3e324b3394973e7a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_tutorial-108335edd12d0452
[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" "2dc3a28630f465098f9f0faeb8e23b49c5cf3bc4a1e4d41c3e324b3394973e7a"`
[INFO] running `"docker" "rm" "-f" "2dc3a28630f465098f9f0faeb8e23b49c5cf3bc4a1e4d41c3e324b3394973e7a"`
[INFO] [stdout] 2dc3a28630f465098f9f0faeb8e23b49c5cf3bc4a1e4d41c3e324b3394973e7a