[INFO] updating cached repository luciusmagn/stackbomb
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/luciusmagn/stackbomb
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/luciusmagn/stackbomb" "work/ex/beta-1.38-1/sources/1.37.0/gh/luciusmagn/stackbomb"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/luciusmagn/stackbomb'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/luciusmagn/stackbomb" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/luciusmagn/stackbomb"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/luciusmagn/stackbomb'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a065793f5e8e8abe2458856630bcabc433f3b651
[INFO] sha for GitHub repo luciusmagn/stackbomb: a065793f5e8e8abe2458856630bcabc433f3b651
[INFO] validating manifest of luciusmagn/stackbomb 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 luciusmagn/stackbomb 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 luciusmagn/stackbomb
[INFO] finished frobbing luciusmagn/stackbomb
[INFO] frobbed toml for luciusmagn/stackbomb written to work/ex/beta-1.38-1/sources/1.37.0/gh/luciusmagn/stackbomb/Cargo.toml
[INFO] started frobbing luciusmagn/stackbomb
[INFO] finished frobbing luciusmagn/stackbomb
[INFO] frobbed toml for luciusmagn/stackbomb written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/luciusmagn/stackbomb/Cargo.toml
[INFO] crate luciusmagn/stackbomb 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing luciusmagn/stackbomb 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/luciusmagn/stackbomb:/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] 399c01a0d6f569b983e3164a49d7e6bb2b29c89736cc613721220f8114d2894a
[INFO] running `"docker" "start" "-a" "399c01a0d6f569b983e3164a49d7e6bb2b29c89736cc613721220f8114d2894a"`
[INFO] [stderr]    Compiling stackbomb v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function cannot return without recursing
[INFO] [stderr]  --> src/main.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | fn f(n: i32)
[INFO] [stderr]   | ^^^^^^^^^^^^ cannot return without recursing
[INFO] [stderr] ...
[INFO] [stderr] 9 |     f(n+1);
[INFO] [stderr]   |     ------ recursive call site
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unconditional_recursion)] on by default
[INFO] [stderr]   = help: a `loop` may express intention better if this is on purpose
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `"docker" "inspect" "399c01a0d6f569b983e3164a49d7e6bb2b29c89736cc613721220f8114d2894a"`
[INFO] running `"docker" "rm" "-f" "399c01a0d6f569b983e3164a49d7e6bb2b29c89736cc613721220f8114d2894a"`
[INFO] [stdout] 399c01a0d6f569b983e3164a49d7e6bb2b29c89736cc613721220f8114d2894a
[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/luciusmagn/stackbomb:/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] ac091b664eb04b0908c0aa5e953b546eed33c0636e094366b83dfbf101aa9ca1
[INFO] running `"docker" "start" "-a" "ac091b664eb04b0908c0aa5e953b546eed33c0636e094366b83dfbf101aa9ca1"`
[INFO] [stderr]    Compiling stackbomb v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function cannot return without recursing
[INFO] [stderr]  --> src/main.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | fn f(n: i32)
[INFO] [stderr]   | ^^^^^^^^^^^^ cannot return without recursing
[INFO] [stderr] ...
[INFO] [stderr] 9 |     f(n+1);
[INFO] [stderr]   |     ------ recursive call site
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unconditional_recursion)] on by default
[INFO] [stderr]   = help: a `loop` may express intention better if this is on purpose
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `"docker" "inspect" "ac091b664eb04b0908c0aa5e953b546eed33c0636e094366b83dfbf101aa9ca1"`
[INFO] running `"docker" "rm" "-f" "ac091b664eb04b0908c0aa5e953b546eed33c0636e094366b83dfbf101aa9ca1"`
[INFO] [stdout] ac091b664eb04b0908c0aa5e953b546eed33c0636e094366b83dfbf101aa9ca1
[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/luciusmagn/stackbomb:/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] 69358d56f6817c651b34c4ce380341eca51f508e43ef64b96586b8864ebc3349
[INFO] running `"docker" "start" "-a" "69358d56f6817c651b34c4ce380341eca51f508e43ef64b96586b8864ebc3349"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/stackbomb-b9572f4dcb47c37e
[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" "69358d56f6817c651b34c4ce380341eca51f508e43ef64b96586b8864ebc3349"`
[INFO] running `"docker" "rm" "-f" "69358d56f6817c651b34c4ce380341eca51f508e43ef64b96586b8864ebc3349"`
[INFO] [stdout] 69358d56f6817c651b34c4ce380341eca51f508e43ef64b96586b8864ebc3349