[INFO] updating cached repository NoahTheDuke/rust_practice
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/NoahTheDuke/rust_practice
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/NoahTheDuke/rust_practice" "work/ex/beta-1.38-1/sources/1.37.0/gh/NoahTheDuke/rust_practice"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/NoahTheDuke/rust_practice'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/NoahTheDuke/rust_practice" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/NoahTheDuke/rust_practice"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/NoahTheDuke/rust_practice'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6a39d4c32b375c0145dcc96caa717310cb600c73
[INFO] sha for GitHub repo NoahTheDuke/rust_practice: 6a39d4c32b375c0145dcc96caa717310cb600c73
[INFO] validating manifest of NoahTheDuke/rust_practice 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 NoahTheDuke/rust_practice 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 NoahTheDuke/rust_practice
[INFO] finished frobbing NoahTheDuke/rust_practice
[INFO] frobbed toml for NoahTheDuke/rust_practice written to work/ex/beta-1.38-1/sources/1.37.0/gh/NoahTheDuke/rust_practice/Cargo.toml
[INFO] started frobbing NoahTheDuke/rust_practice
[INFO] finished frobbing NoahTheDuke/rust_practice
[INFO] frobbed toml for NoahTheDuke/rust_practice written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/NoahTheDuke/rust_practice/Cargo.toml
[INFO] crate NoahTheDuke/rust_practice 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/NoahTheDuke/rust_practice/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[INFO] the lockfile is outdated, regenerating it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 NoahTheDuke/rust_practice 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-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/NoahTheDuke/rust_practice:/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] 7bd63dd870af4b295eaf85749a19288668b200f2bbf3f33d6b44503d80ac6bcd
[INFO] running `"docker" "start" "-a" "7bd63dd870af4b295eaf85749a19288668b200f2bbf3f33d6b44503d80ac6bcd"`
[INFO] [stderr]    Compiling getrandom v0.1.10
[INFO] [stderr]    Compiling rand_core v0.5.0
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.0
[INFO] [stderr]    Compiling practice v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.07s
[INFO] running `"docker" "inspect" "7bd63dd870af4b295eaf85749a19288668b200f2bbf3f33d6b44503d80ac6bcd"`
[INFO] running `"docker" "rm" "-f" "7bd63dd870af4b295eaf85749a19288668b200f2bbf3f33d6b44503d80ac6bcd"`
[INFO] [stdout] 7bd63dd870af4b295eaf85749a19288668b200f2bbf3f33d6b44503d80ac6bcd
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/NoahTheDuke/rust_practice:/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] 7dde8fa722275b6dbb92d0922334101b665e4b03719c5a91ddfa38c5f12c0177
[INFO] running `"docker" "start" "-a" "7dde8fa722275b6dbb92d0922334101b665e4b03719c5a91ddfa38c5f12c0177"`
[INFO] [stderr]    Compiling practice v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.96s
[INFO] running `"docker" "inspect" "7dde8fa722275b6dbb92d0922334101b665e4b03719c5a91ddfa38c5f12c0177"`
[INFO] running `"docker" "rm" "-f" "7dde8fa722275b6dbb92d0922334101b665e4b03719c5a91ddfa38c5f12c0177"`
[INFO] [stdout] 7dde8fa722275b6dbb92d0922334101b665e4b03719c5a91ddfa38c5f12c0177
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/NoahTheDuke/rust_practice:/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] ae56f83ef4576ecb6115300f5daf306560d8e15aebd292a58ec99672f45a5ee3
[INFO] running `"docker" "start" "-a" "ae56f83ef4576ecb6115300f5daf306560d8e15aebd292a58ec99672f45a5ee3"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/practice-bf0b43fc1f19966c
[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" "ae56f83ef4576ecb6115300f5daf306560d8e15aebd292a58ec99672f45a5ee3"`
[INFO] running `"docker" "rm" "-f" "ae56f83ef4576ecb6115300f5daf306560d8e15aebd292a58ec99672f45a5ee3"`
[INFO] [stdout] ae56f83ef4576ecb6115300f5daf306560d8e15aebd292a58ec99672f45a5ee3