[INFO] cloning repository usmanmunara/rust_learning
[INFO] running `"git" "clone" "--bare" "git://github.com/usmanmunara/rust_learning.git" "work/cache/sources/gh/usmanmunara/rust_learning"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/usmanmunara/rust_learning'...
[INFO] running `"git" "clone" "work/cache/sources/gh/usmanmunara/rust_learning" "work/ex/beta-1.37-6/sources/1.36.0/gh/usmanmunara/rust_learning"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/usmanmunara/rust_learning'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/usmanmunara/rust_learning" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/usmanmunara/rust_learning"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/usmanmunara/rust_learning'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a117a261b5cbd1e6609ea8100a9ec70ecb41cd64
[INFO] sha for GitHub repo usmanmunara/rust_learning: a117a261b5cbd1e6609ea8100a9ec70ecb41cd64
[INFO] validating manifest of usmanmunara/rust_learning 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 usmanmunara/rust_learning 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 usmanmunara/rust_learning
[INFO] finished frobbing usmanmunara/rust_learning
[INFO] frobbed toml for usmanmunara/rust_learning written to work/ex/beta-1.37-6/sources/1.36.0/gh/usmanmunara/rust_learning/Cargo.toml
[INFO] started frobbing usmanmunara/rust_learning
[INFO] finished frobbing usmanmunara/rust_learning
[INFO] frobbed toml for usmanmunara/rust_learning written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/usmanmunara/rust_learning/Cargo.toml
[INFO] crate usmanmunara/rust_learning 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 usmanmunara/rust_learning 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-7/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/usmanmunara/rust_learning:/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] 0fda1ca49ecdd2c158b95461df7e0e7f353614699ccfb10b974ff1e11d418bc7
[INFO] running `"docker" "start" "-a" "0fda1ca49ecdd2c158b95461df7e0e7f353614699ccfb10b974ff1e11d418bc7"`
[INFO] [stderr]    Compiling rust_2 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `"docker" "inspect" "0fda1ca49ecdd2c158b95461df7e0e7f353614699ccfb10b974ff1e11d418bc7"`
[INFO] running `"docker" "rm" "-f" "0fda1ca49ecdd2c158b95461df7e0e7f353614699ccfb10b974ff1e11d418bc7"`
[INFO] [stdout] 0fda1ca49ecdd2c158b95461df7e0e7f353614699ccfb10b974ff1e11d418bc7
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/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/usmanmunara/rust_learning:/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] 84d4983cf6d4d2189b6dd63a2daeda9f539a5b2b654114dffbf0f6921db206be
[INFO] running `"docker" "start" "-a" "84d4983cf6d4d2189b6dd63a2daeda9f539a5b2b654114dffbf0f6921db206be"`
[INFO] [stderr]    Compiling rust_2 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `"docker" "inspect" "84d4983cf6d4d2189b6dd63a2daeda9f539a5b2b654114dffbf0f6921db206be"`
[INFO] running `"docker" "rm" "-f" "84d4983cf6d4d2189b6dd63a2daeda9f539a5b2b654114dffbf0f6921db206be"`
[INFO] [stdout] 84d4983cf6d4d2189b6dd63a2daeda9f539a5b2b654114dffbf0f6921db206be
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/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/usmanmunara/rust_learning:/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] 589b30b54682aa0d18abec19f5bad6c4a63c762633546e99cd1dab0ee61a6ef3
[INFO] running `"docker" "start" "-a" "589b30b54682aa0d18abec19f5bad6c4a63c762633546e99cd1dab0ee61a6ef3"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_2-9a9857654562b0d4
[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" "589b30b54682aa0d18abec19f5bad6c4a63c762633546e99cd1dab0ee61a6ef3"`
[INFO] running `"docker" "rm" "-f" "589b30b54682aa0d18abec19f5bad6c4a63c762633546e99cd1dab0ee61a6ef3"`
[INFO] [stdout] 589b30b54682aa0d18abec19f5bad6c4a63c762633546e99cd1dab0ee61a6ef3