[INFO] updating cached repository saqib006/learn-rust-programming
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/saqib006/learn-rust-programming
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/saqib006/learn-rust-programming" "work/ex/beta-1.37-6/sources/1.36.0/gh/saqib006/learn-rust-programming"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/saqib006/learn-rust-programming'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/saqib006/learn-rust-programming" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/saqib006/learn-rust-programming"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/saqib006/learn-rust-programming'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4ff154d04d27621034e23815b5c5cd08ca6f8f0e
[INFO] sha for GitHub repo saqib006/learn-rust-programming: 4ff154d04d27621034e23815b5c5cd08ca6f8f0e
[INFO] validating manifest of saqib006/learn-rust-programming 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 saqib006/learn-rust-programming 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 saqib006/learn-rust-programming
[INFO] finished frobbing saqib006/learn-rust-programming
[INFO] frobbed toml for saqib006/learn-rust-programming written to work/ex/beta-1.37-6/sources/1.36.0/gh/saqib006/learn-rust-programming/Cargo.toml
[INFO] started frobbing saqib006/learn-rust-programming
[INFO] finished frobbing saqib006/learn-rust-programming
[INFO] frobbed toml for saqib006/learn-rust-programming written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/saqib006/learn-rust-programming/Cargo.toml
[INFO] crate saqib006/learn-rust-programming 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] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing saqib006/learn-rust-programming 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-4/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/saqib006/learn-rust-programming:/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] 7a87be870c4499c3436c494cc95b28ddc6a44a7304b9db7acc4c4d4966698e30
[INFO] running `"docker" "start" "-a" "7a87be870c4499c3436c494cc95b28ddc6a44a7304b9db7acc4c4d4966698e30"`
[INFO] [stderr]    Compiling rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `"docker" "inspect" "7a87be870c4499c3436c494cc95b28ddc6a44a7304b9db7acc4c4d4966698e30"`
[INFO] running `"docker" "rm" "-f" "7a87be870c4499c3436c494cc95b28ddc6a44a7304b9db7acc4c4d4966698e30"`
[INFO] [stdout] 7a87be870c4499c3436c494cc95b28ddc6a44a7304b9db7acc4c4d4966698e30
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/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/saqib006/learn-rust-programming:/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] 563f6d9b4bbf1afc72abc17b080916feb9128f96570b72b8f0be5fb611c5d5e9
[INFO] running `"docker" "start" "-a" "563f6d9b4bbf1afc72abc17b080916feb9128f96570b72b8f0be5fb611c5d5e9"`
[INFO] [stderr]    Compiling rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `"docker" "inspect" "563f6d9b4bbf1afc72abc17b080916feb9128f96570b72b8f0be5fb611c5d5e9"`
[INFO] running `"docker" "rm" "-f" "563f6d9b4bbf1afc72abc17b080916feb9128f96570b72b8f0be5fb611c5d5e9"`
[INFO] [stdout] 563f6d9b4bbf1afc72abc17b080916feb9128f96570b72b8f0be5fb611c5d5e9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/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/saqib006/learn-rust-programming:/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] 4473a264ec3254182a385741e1632a7107b461300a4831080788abd5f1abf5aa
[INFO] running `"docker" "start" "-a" "4473a264ec3254182a385741e1632a7107b461300a4831080788abd5f1abf5aa"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust-56a711e05fa8b0f3
[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" "4473a264ec3254182a385741e1632a7107b461300a4831080788abd5f1abf5aa"`
[INFO] running `"docker" "rm" "-f" "4473a264ec3254182a385741e1632a7107b461300a4831080788abd5f1abf5aa"`
[INFO] [stdout] 4473a264ec3254182a385741e1632a7107b461300a4831080788abd5f1abf5aa