[INFO] updating cached repository gcrubikloud/calculator-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/gcrubikloud/calculator-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/gcrubikloud/calculator-rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/gcrubikloud/calculator-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/gcrubikloud/calculator-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/gcrubikloud/calculator-rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/gcrubikloud/calculator-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/gcrubikloud/calculator-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 202aa6943f24f099656635a1641dabfd2271a5a3
[INFO] sha for GitHub repo gcrubikloud/calculator-rs: 202aa6943f24f099656635a1641dabfd2271a5a3
[INFO] validating manifest of gcrubikloud/calculator-rs 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 gcrubikloud/calculator-rs 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 gcrubikloud/calculator-rs
[INFO] finished frobbing gcrubikloud/calculator-rs
[INFO] frobbed toml for gcrubikloud/calculator-rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/gcrubikloud/calculator-rs/Cargo.toml
[INFO] started frobbing gcrubikloud/calculator-rs
[INFO] finished frobbing gcrubikloud/calculator-rs
[INFO] frobbed toml for gcrubikloud/calculator-rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/gcrubikloud/calculator-rs/Cargo.toml
[INFO] crate gcrubikloud/calculator-rs 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 gcrubikloud/calculator-rs 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/gcrubikloud/calculator-rs:/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] 1a33fa5a35f44933104da730af96cd798ad0252e8ebeec93a45e8ef23fe9f3b1
[INFO] running `"docker" "start" "-a" "1a33fa5a35f44933104da730af96cd798ad0252e8ebeec93a45e8ef23fe9f3b1"`
[INFO] [stderr]    Compiling libc v0.2.47
[INFO] [stderr]    Compiling syn v0.15.25
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]    Compiling backtrace v0.3.13
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling indextree v3.0.0
[INFO] [stderr]    Compiling calc v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `get_mock_expr`
[INFO] [stderr]   --> src/main.rs:29:1
[INFO] [stderr]    |
[INFO] [stderr] 29 | fn get_mock_expr() -> Box<str> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_expr`
[INFO] [stderr]   --> src/main.rs:35:1
[INFO] [stderr]    |
[INFO] [stderr] 35 | fn get_expr() -> Box<str> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_bracket`
[INFO] [stderr]   --> src/main.rs:50:1
[INFO] [stderr]    |
[INFO] [stderr] 50 | fn is_bracket(token: &String) -> bool {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.27s
[INFO] running `"docker" "inspect" "1a33fa5a35f44933104da730af96cd798ad0252e8ebeec93a45e8ef23fe9f3b1"`
[INFO] running `"docker" "rm" "-f" "1a33fa5a35f44933104da730af96cd798ad0252e8ebeec93a45e8ef23fe9f3b1"`
[INFO] [stdout] 1a33fa5a35f44933104da730af96cd798ad0252e8ebeec93a45e8ef23fe9f3b1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/gcrubikloud/calculator-rs:/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] dae7f3b3d01029da454ead6636bc761f27d48eb4e45a99e3366d7d9efe782c77
[INFO] running `"docker" "start" "-a" "dae7f3b3d01029da454ead6636bc761f27d48eb4e45a99e3366d7d9efe782c77"`
[INFO] [stderr]    Compiling calc v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `get_mock_expr`
[INFO] [stderr]   --> src/main.rs:29:1
[INFO] [stderr]    |
[INFO] [stderr] 29 | fn get_mock_expr() -> Box<str> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_expr`
[INFO] [stderr]   --> src/main.rs:35:1
[INFO] [stderr]    |
[INFO] [stderr] 35 | fn get_expr() -> Box<str> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_bracket`
[INFO] [stderr]   --> src/main.rs:50:1
[INFO] [stderr]    |
[INFO] [stderr] 50 | fn is_bracket(token: &String) -> bool {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `"docker" "inspect" "dae7f3b3d01029da454ead6636bc761f27d48eb4e45a99e3366d7d9efe782c77"`
[INFO] running `"docker" "rm" "-f" "dae7f3b3d01029da454ead6636bc761f27d48eb4e45a99e3366d7d9efe782c77"`
[INFO] [stdout] dae7f3b3d01029da454ead6636bc761f27d48eb4e45a99e3366d7d9efe782c77
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/gcrubikloud/calculator-rs:/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] f13b069caedad435beac8b6871b6ff483562c1152582b05c9e7b44ce1603af5a
[INFO] running `"docker" "start" "-a" "f13b069caedad435beac8b6871b6ff483562c1152582b05c9e7b44ce1603af5a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/calc-c4395612f9c9d18f
[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" "f13b069caedad435beac8b6871b6ff483562c1152582b05c9e7b44ce1603af5a"`
[INFO] running `"docker" "rm" "-f" "f13b069caedad435beac8b6871b6ff483562c1152582b05c9e7b44ce1603af5a"`
[INFO] [stdout] f13b069caedad435beac8b6871b6ff483562c1152582b05c9e7b44ce1603af5a