[INFO] updating cached repository krishnaIndia/Rust-Coverage-Sample
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/krishnaIndia/Rust-Coverage-Sample
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/krishnaIndia/Rust-Coverage-Sample" "work/ex/beta-1.38-1/sources/1.37.0/gh/krishnaIndia/Rust-Coverage-Sample"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/krishnaIndia/Rust-Coverage-Sample'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/krishnaIndia/Rust-Coverage-Sample" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/krishnaIndia/Rust-Coverage-Sample"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/krishnaIndia/Rust-Coverage-Sample'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ef7b18449cd81d1d0e144f50c06619bab74b7dec
[INFO] sha for GitHub repo krishnaIndia/Rust-Coverage-Sample: ef7b18449cd81d1d0e144f50c06619bab74b7dec
[INFO] validating manifest of krishnaIndia/Rust-Coverage-Sample 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 krishnaIndia/Rust-Coverage-Sample 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 krishnaIndia/Rust-Coverage-Sample
[INFO] finished frobbing krishnaIndia/Rust-Coverage-Sample
[INFO] frobbed toml for krishnaIndia/Rust-Coverage-Sample written to work/ex/beta-1.38-1/sources/1.37.0/gh/krishnaIndia/Rust-Coverage-Sample/Cargo.toml
[INFO] started frobbing krishnaIndia/Rust-Coverage-Sample
[INFO] finished frobbing krishnaIndia/Rust-Coverage-Sample
[INFO] frobbed toml for krishnaIndia/Rust-Coverage-Sample written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/krishnaIndia/Rust-Coverage-Sample/Cargo.toml
[INFO] crate krishnaIndia/Rust-Coverage-Sample 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 krishnaIndia/Rust-Coverage-Sample against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/krishnaIndia/Rust-Coverage-Sample:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 65f0ad755eb065bbb33e3c25c4f42f97913f954ded7ce76978bdc9f2b80575c8
[INFO] running `"docker" "start" "-a" "65f0ad755eb065bbb33e3c25c4f42f97913f954ded7ce76978bdc9f2b80575c8"`
[INFO] [stderr]    Compiling Rust-Coverage-Sample v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `id`
[INFO] [stderr]  --> src/faculty/faculty.rs:2:3
[INFO] [stderr]   |
[INFO] [stderr] 2 |   id: u8,
[INFO] [stderr]   |   ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `add_test`
[INFO] [stderr]   --> src/lib.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn add_test() {
[INFO] [stderr]    | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `"docker" "inspect" "65f0ad755eb065bbb33e3c25c4f42f97913f954ded7ce76978bdc9f2b80575c8"`
[INFO] running `"docker" "rm" "-f" "65f0ad755eb065bbb33e3c25c4f42f97913f954ded7ce76978bdc9f2b80575c8"`
[INFO] [stdout] 65f0ad755eb065bbb33e3c25c4f42f97913f954ded7ce76978bdc9f2b80575c8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/krishnaIndia/Rust-Coverage-Sample:/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-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] abf0250c88bb64a4dd38df9d3919779a25d13c05b16dfe7497e08fdd75ed0df8
[INFO] running `"docker" "start" "-a" "abf0250c88bb64a4dd38df9d3919779a25d13c05b16dfe7497e08fdd75ed0df8"`
[INFO] [stderr]    Compiling Rust-Coverage-Sample v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `id`
[INFO] [stderr]  --> src/faculty/faculty.rs:2:3
[INFO] [stderr]   |
[INFO] [stderr] 2 |   id: u8,
[INFO] [stderr]   |   ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `"docker" "inspect" "abf0250c88bb64a4dd38df9d3919779a25d13c05b16dfe7497e08fdd75ed0df8"`
[INFO] running `"docker" "rm" "-f" "abf0250c88bb64a4dd38df9d3919779a25d13c05b16dfe7497e08fdd75ed0df8"`
[INFO] [stdout] abf0250c88bb64a4dd38df9d3919779a25d13c05b16dfe7497e08fdd75ed0df8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/krishnaIndia/Rust-Coverage-Sample:/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-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 2b0667395f3fc75ac04be00eabbf3fcca14b80de6883d67b29b6361d20fd7b5b
[INFO] running `"docker" "start" "-a" "2b0667395f3fc75ac04be00eabbf3fcca14b80de6883d67b29b6361d20fd7b5b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_coverage_sample-1dffb1eeeba05f7c
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test ... ok
[INFO] [stdout] test stud::student::test_student ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rust_coverage_sample
[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" "2b0667395f3fc75ac04be00eabbf3fcca14b80de6883d67b29b6361d20fd7b5b"`
[INFO] running `"docker" "rm" "-f" "2b0667395f3fc75ac04be00eabbf3fcca14b80de6883d67b29b6361d20fd7b5b"`
[INFO] [stdout] 2b0667395f3fc75ac04be00eabbf3fcca14b80de6883d67b29b6361d20fd7b5b