[INFO] updating cached repository coffee-cup/rust-calc
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/coffee-cup/rust-calc
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/coffee-cup/rust-calc" "work/ex/beta-1.37-6/sources/1.36.0/gh/coffee-cup/rust-calc"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/coffee-cup/rust-calc'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/coffee-cup/rust-calc" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/coffee-cup/rust-calc"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/coffee-cup/rust-calc'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f7fa90f1100921250c2ea8fdf6e3f1a6005726e1
[INFO] sha for GitHub repo coffee-cup/rust-calc: f7fa90f1100921250c2ea8fdf6e3f1a6005726e1
[INFO] validating manifest of coffee-cup/rust-calc 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 coffee-cup/rust-calc 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 coffee-cup/rust-calc
[INFO] finished frobbing coffee-cup/rust-calc
[INFO] frobbed toml for coffee-cup/rust-calc written to work/ex/beta-1.37-6/sources/1.36.0/gh/coffee-cup/rust-calc/Cargo.toml
[INFO] started frobbing coffee-cup/rust-calc
[INFO] finished frobbing coffee-cup/rust-calc
[INFO] frobbed toml for coffee-cup/rust-calc written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/coffee-cup/rust-calc/Cargo.toml
[INFO] crate coffee-cup/rust-calc 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 coffee-cup/rust-calc against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/coffee-cup/rust-calc:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] ebbf2629a7f2a69b195a9c607ec29ef8393dc289bc8f6c6f38a4f175967bb7a2
[INFO] running `"docker" "start" "-a" "ebbf2629a7f2a69b195a9c607ec29ef8393dc289bc8f6c6f38a4f175967bb7a2"`
[INFO] [stderr]    Compiling rust-calc v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `parse_and_lex`
[INFO] [stderr]   --> src/parser.rs:41:1
[INFO] [stderr]    |
[INFO] [stderr] 41 | pub fn parse_and_lex(input: &String) -> Result<Expr, String> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `"docker" "inspect" "ebbf2629a7f2a69b195a9c607ec29ef8393dc289bc8f6c6f38a4f175967bb7a2"`
[INFO] running `"docker" "rm" "-f" "ebbf2629a7f2a69b195a9c607ec29ef8393dc289bc8f6c6f38a4f175967bb7a2"`
[INFO] [stdout] ebbf2629a7f2a69b195a9c607ec29ef8393dc289bc8f6c6f38a4f175967bb7a2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/coffee-cup/rust-calc:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 9496eb777bf05506c470ae80b09cfc5332a32146c99d0d54f1364b2070064a56
[INFO] running `"docker" "start" "-a" "9496eb777bf05506c470ae80b09cfc5332a32146c99d0d54f1364b2070064a56"`
[INFO] [stderr]    Compiling rust-calc v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.10s
[INFO] running `"docker" "inspect" "9496eb777bf05506c470ae80b09cfc5332a32146c99d0d54f1364b2070064a56"`
[INFO] running `"docker" "rm" "-f" "9496eb777bf05506c470ae80b09cfc5332a32146c99d0d54f1364b2070064a56"`
[INFO] [stdout] 9496eb777bf05506c470ae80b09cfc5332a32146c99d0d54f1364b2070064a56
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/coffee-cup/rust-calc:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] e1a6068f51eb229f95b85ec67edbce2750f899aa00e7c171adf42d5caa87f914
[INFO] running `"docker" "start" "-a" "e1a6068f51eb229f95b85ec67edbce2750f899aa00e7c171adf42d5caa87f914"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_calc-cbf1309820738cc9
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test lexer::tests::lex_empty_parens ... ok
[INFO] [stdout] test lexer::tests::lex_integer ... ok
[INFO] [stdout] test interpreter::tests::eval_literal ... ok
[INFO] [stdout] test interpreter::tests::eval_simple ... ok
[INFO] [stdout] test lexer::tests::lex_math_expression ... ok
[INFO] [stdout] test parser::tests::parse_literal_expr ... ok
[INFO] [stdout] test lexer::tests::lex_simple_tokens ... ok
[INFO] [stdout] test parser::tests::parse_paren ... ok
[INFO] [stdout] test parser::tests::parse_addition_expr ... ok
[INFO] [stdout] test parser::tests::basic_precedence ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "e1a6068f51eb229f95b85ec67edbce2750f899aa00e7c171adf42d5caa87f914"`
[INFO] running `"docker" "rm" "-f" "e1a6068f51eb229f95b85ec67edbce2750f899aa00e7c171adf42d5caa87f914"`
[INFO] [stdout] e1a6068f51eb229f95b85ec67edbce2750f899aa00e7c171adf42d5caa87f914