[INFO] updating cached repository lporter6/school-carpool-project
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/lporter6/school-carpool-project
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/lporter6/school-carpool-project" "work/ex/beta-1.38-1/sources/1.37.0/gh/lporter6/school-carpool-project"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/lporter6/school-carpool-project'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/lporter6/school-carpool-project" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/lporter6/school-carpool-project"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/lporter6/school-carpool-project'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 44ae7329398738413c04f2407b6389a23be2b7b6
[INFO] sha for GitHub repo lporter6/school-carpool-project: 44ae7329398738413c04f2407b6389a23be2b7b6
[INFO] validating manifest of lporter6/school-carpool-project 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 lporter6/school-carpool-project 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 lporter6/school-carpool-project
[INFO] finished frobbing lporter6/school-carpool-project
[INFO] frobbed toml for lporter6/school-carpool-project written to work/ex/beta-1.38-1/sources/1.37.0/gh/lporter6/school-carpool-project/Cargo.toml
[INFO] started frobbing lporter6/school-carpool-project
[INFO] finished frobbing lporter6/school-carpool-project
[INFO] frobbed toml for lporter6/school-carpool-project written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/lporter6/school-carpool-project/Cargo.toml
[INFO] crate lporter6/school-carpool-project 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 lporter6/school-carpool-project 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-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/lporter6/school-carpool-project:/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] 986dd6de45e5e17d63e6b96f66d133900dd953a9b2fc2baff6cfc0fd6460ecf3
[INFO] running `"docker" "start" "-a" "986dd6de45e5e17d63e6b96f66d133900dd953a9b2fc2baff6cfc0fd6460ecf3"`
[INFO] [stderr]    Compiling serde v1.0.78
[INFO] [stderr]    Compiling serde_json v1.0.27
[INFO] [stderr]    Compiling school-carpool-project v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: value assigned to `name` is never read
[INFO] [stderr]   --> src/data/mod.rs:15:17
[INFO] [stderr]    |
[INFO] [stderr] 15 |         let mut name = String::from("");
[INFO] [stderr]    |                 ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Student`
[INFO] [stderr]   --> src/data/mod.rs:33:1
[INFO] [stderr]    |
[INFO] [stderr] 33 | struct Student {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Grade`
[INFO] [stderr]   --> src/data/mod.rs:41:1
[INFO] [stderr]    |
[INFO] [stderr] 41 | enum Grade {
[INFO] [stderr]    | ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Scores`
[INFO] [stderr]   --> src/data/mod.rs:57:1
[INFO] [stderr]    |
[INFO] [stderr] 57 | struct Scores{
[INFO] [stderr]    | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Table`
[INFO] [stderr]   --> src/data/mod.rs:60:1
[INFO] [stderr]    |
[INFO] [stderr] 60 | struct Table {
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ClassScore`
[INFO] [stderr]   --> src/data/mod.rs:64:1
[INFO] [stderr]    |
[INFO] [stderr] 64 | struct ClassScore{
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Category`
[INFO] [stderr]   --> src/data/mod.rs:68:1
[INFO] [stderr]    |
[INFO] [stderr] 68 | struct Category{
[INFO] [stderr]    | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/data/mod.rs:74:5
[INFO] [stderr]    |
[INFO] [stderr] 74 |     pub fn new(years: Vec<Table>) -> Scores{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/data/mod.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 |     pub fn new(grade: Grade, scores: Vec<ClassScore>) -> Table{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/data/mod.rs:89:5
[INFO] [stderr]    |
[INFO] [stderr] 89 |     pub fn new(class: String, categories: Vec<Category>) -> ClassScore{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/data/mod.rs:97:5
[INFO] [stderr]    |
[INFO] [stderr] 97 |     pub fn new(name: String, grades: Vec<u8>, weight: u8) -> Category{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.55s
[INFO] running `"docker" "inspect" "986dd6de45e5e17d63e6b96f66d133900dd953a9b2fc2baff6cfc0fd6460ecf3"`
[INFO] running `"docker" "rm" "-f" "986dd6de45e5e17d63e6b96f66d133900dd953a9b2fc2baff6cfc0fd6460ecf3"`
[INFO] [stdout] 986dd6de45e5e17d63e6b96f66d133900dd953a9b2fc2baff6cfc0fd6460ecf3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/lporter6/school-carpool-project:/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] cec855214fbe9207d92163c3784f262b69102dc2882db248abcf1f0d2b5f389c
[INFO] running `"docker" "start" "-a" "cec855214fbe9207d92163c3784f262b69102dc2882db248abcf1f0d2b5f389c"`
[INFO] [stderr]    Compiling school-carpool-project v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: value assigned to `name` is never read
[INFO] [stderr]   --> src/data/mod.rs:15:17
[INFO] [stderr]    |
[INFO] [stderr] 15 |         let mut name = String::from("");
[INFO] [stderr]    |                 ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parent`
[INFO] [stderr]  --> src/lib.rs:8:13
[INFO] [stderr]   |
[INFO] [stderr] 8 |         let parent = Parent::new(Some(32),String::from("William"), Some(String::from("Logan")), String::from("Porter"));
[INFO] [stderr]   |             ^^^^^^ help: consider prefixing with an underscore: `_parent`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Student`
[INFO] [stderr]   --> src/data/mod.rs:33:1
[INFO] [stderr]    |
[INFO] [stderr] 33 | struct Student {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Grade`
[INFO] [stderr]   --> src/data/mod.rs:41:1
[INFO] [stderr]    |
[INFO] [stderr] 41 | enum Grade {
[INFO] [stderr]    | ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Scores`
[INFO] [stderr]   --> src/data/mod.rs:57:1
[INFO] [stderr]    |
[INFO] [stderr] 57 | struct Scores{
[INFO] [stderr]    | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Table`
[INFO] [stderr]   --> src/data/mod.rs:60:1
[INFO] [stderr]    |
[INFO] [stderr] 60 | struct Table {
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ClassScore`
[INFO] [stderr]   --> src/data/mod.rs:64:1
[INFO] [stderr]    |
[INFO] [stderr] 64 | struct ClassScore{
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Category`
[INFO] [stderr]   --> src/data/mod.rs:68:1
[INFO] [stderr]    |
[INFO] [stderr] 68 | struct Category{
[INFO] [stderr]    | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/data/mod.rs:74:5
[INFO] [stderr]    |
[INFO] [stderr] 74 |     pub fn new(years: Vec<Table>) -> Scores{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/data/mod.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 |     pub fn new(grade: Grade, scores: Vec<ClassScore>) -> Table{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/data/mod.rs:89:5
[INFO] [stderr]    |
[INFO] [stderr] 89 |     pub fn new(class: String, categories: Vec<Category>) -> ClassScore{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/data/mod.rs:97:5
[INFO] [stderr]    |
[INFO] [stderr] 97 |     pub fn new(name: String, grades: Vec<u8>, weight: u8) -> Category{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.25s
[INFO] running `"docker" "inspect" "cec855214fbe9207d92163c3784f262b69102dc2882db248abcf1f0d2b5f389c"`
[INFO] running `"docker" "rm" "-f" "cec855214fbe9207d92163c3784f262b69102dc2882db248abcf1f0d2b5f389c"`
[INFO] [stdout] cec855214fbe9207d92163c3784f262b69102dc2882db248abcf1f0d2b5f389c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/lporter6/school-carpool-project:/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] 36ca0f2cc784e9f41c52431d240ac942374627f6c2bd898ab117d0fd52eb08f1
[INFO] running `"docker" "start" "-a" "36ca0f2cc784e9f41c52431d240ac942374627f6c2bd898ab117d0fd52eb08f1"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/school_carpool_project-12bb3bb1f50163f5
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test::test_parents ... ok
[INFO] [stderr]      Running /opt/crater/target/debug/deps/school_carpool_project-fa8f47f05ea86a8d
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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] [stderr]    Doc-tests school-carpool-project
[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" "36ca0f2cc784e9f41c52431d240ac942374627f6c2bd898ab117d0fd52eb08f1"`
[INFO] running `"docker" "rm" "-f" "36ca0f2cc784e9f41c52431d240ac942374627f6c2bd898ab117d0fd52eb08f1"`
[INFO] [stdout] 36ca0f2cc784e9f41c52431d240ac942374627f6c2bd898ab117d0fd52eb08f1