[INFO] cloning repository https://github.com/shezu/RustPractice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shezu/RustPractice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshezu%2FRustPractice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshezu%2FRustPractice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 127fab901464c9062e079db7e6edeeec633238a3
[INFO] building shezu/RustPractice against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshezu%2FRustPractice" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/shezu/RustPractice on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/shezu/RustPractice
[INFO] finished tweaking git repo https://github.com/shezu/RustPractice
[INFO] tweaked toml for git repo https://github.com/shezu/RustPractice written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/shezu/RustPractice already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] af7c6e94feaca8ad33d22b8d20a0ebe2a4fcb7544b32d8d5ef1e2a80632603ac
[INFO] running `Command { std: "docker" "start" "-a" "af7c6e94feaca8ad33d22b8d20a0ebe2a4fcb7544b32d8d5ef1e2a80632603ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af7c6e94feaca8ad33d22b8d20a0ebe2a4fcb7544b32d8d5ef1e2a80632603ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af7c6e94feaca8ad33d22b8d20a0ebe2a4fcb7544b32d8d5ef1e2a80632603ac", kill_on_drop: false }`
[INFO] [stdout] af7c6e94feaca8ad33d22b8d20a0ebe2a4fcb7544b32d8d5ef1e2a80632603ac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b9377cd194d9be8960f69f891b91f6614634fa7064843bbc0715e6036c7987ba
[INFO] running `Command { std: "docker" "start" "-a" "b9377cd194d9be8960f69f891b91f6614634fa7064843bbc0715e6036c7987ba", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling chrono v0.4.10
[INFO] [stderr]    Compiling assignment_29_dec_19 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `BookInformation`
[INFO] [stdout]   --> src/main.rs:18:19
[INFO] [stdout]    |
[INFO] [stdout] 18 | use traits::{Book,BookInformation};
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `a_minus_b` is never read
[INFO] [stdout]   --> src/euclidean_distance.rs:47:17
[INFO] [stdout]    |
[INFO] [stdout] 47 |         let mut a_minus_b: isize = 0;
[INFO] [stdout]    |                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closures` is never used
[INFO] [stdout]   --> src/main.rs:67:4
[INFO] [stdout]    |
[INFO] [stdout] 67 | fn closures(){
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check_string_characters` is never used
[INFO] [stdout]  --> src/count_chars.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn check_string_characters(){
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_stars` is never used
[INFO] [stdout]  --> src/print_stars_pattern.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn print_stars(){
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_numbers` is never used
[INFO] [stdout]  --> src/add_up_numbers.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn add_numbers(){
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_distance_in_dates` is never used
[INFO] [stdout]  --> src/dates.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn get_distance_in_dates(){
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Coordinates` is never constructed
[INFO] [stdout]  --> src/euclidean_distance.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Coordinates {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `get_distance` and `calculate_a_minus_b` are never used
[INFO] [stdout]   --> src/euclidean_distance.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Coordinates {
[INFO] [stdout]    | ---------------- associated functions in this implementation
[INFO] [stdout] 12 |     pub fn get_distance() -> f64 {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 46 |     fn calculate_a_minus_b(a: isize, b: isize) -> isize {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `palindrome` is never used
[INFO] [stdout]  --> src/palindrome_checker.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn palindrome() {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `repetitively` is never used
[INFO] [stdout]  --> src/repetitive_string.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn repetitively(){
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RightAngleTriangle` is never constructed
[INFO] [stdout]  --> src/generics.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct RightAngleTriangle<T> {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `RightAngleTriangle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `calculate_hypotenus` is never used
[INFO] [stdout]   --> src/generics.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl<T : Add<Output = T> + Mul<Output = T> + Copy> RightAngleTriangle<T> {
[INFO] [stdout]    | ------------------------------------------------------------------------ method in this implementation
[INFO] [stdout] 10 |     pub fn calculate_hypotenus(&self) -> T{
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `new` is never used
[INFO] [stdout]   --> src/traits.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub trait BookInformation {
[INFO] [stdout]    |           --------------- method in this trait
[INFO] [stdout] 10 |     fn new(&self, author : String, publisher: String) -> Self;
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.13s
[INFO] running `Command { std: "docker" "inspect" "b9377cd194d9be8960f69f891b91f6614634fa7064843bbc0715e6036c7987ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9377cd194d9be8960f69f891b91f6614634fa7064843bbc0715e6036c7987ba", kill_on_drop: false }`
[INFO] [stdout] b9377cd194d9be8960f69f891b91f6614634fa7064843bbc0715e6036c7987ba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7ce61d1a45c46d403c20483ff7d56f77dc0c3ddc4b21b83416449acdfa452193
[INFO] running `Command { std: "docker" "start" "-a" "7ce61d1a45c46d403c20483ff7d56f77dc0c3ddc4b21b83416449acdfa452193", kill_on_drop: false }`
[INFO] [stderr]    Compiling assignment_29_dec_19 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `BookInformation`
[INFO] [stdout]   --> src/main.rs:18:19
[INFO] [stdout]    |
[INFO] [stdout] 18 | use traits::{Book,BookInformation};
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `a_minus_b` is never read
[INFO] [stdout]   --> src/euclidean_distance.rs:47:17
[INFO] [stdout]    |
[INFO] [stdout] 47 |         let mut a_minus_b: isize = 0;
[INFO] [stdout]    |                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closures` is never used
[INFO] [stdout]   --> src/main.rs:67:4
[INFO] [stdout]    |
[INFO] [stdout] 67 | fn closures(){
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check_string_characters` is never used
[INFO] [stdout]  --> src/count_chars.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn check_string_characters(){
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_stars` is never used
[INFO] [stdout]  --> src/print_stars_pattern.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn print_stars(){
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_numbers` is never used
[INFO] [stdout]  --> src/add_up_numbers.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn add_numbers(){
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_distance_in_dates` is never used
[INFO] [stdout]  --> src/dates.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn get_distance_in_dates(){
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Coordinates` is never constructed
[INFO] [stdout]  --> src/euclidean_distance.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Coordinates {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `get_distance` and `calculate_a_minus_b` are never used
[INFO] [stdout]   --> src/euclidean_distance.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Coordinates {
[INFO] [stdout]    | ---------------- associated functions in this implementation
[INFO] [stdout] 12 |     pub fn get_distance() -> f64 {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 46 |     fn calculate_a_minus_b(a: isize, b: isize) -> isize {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `palindrome` is never used
[INFO] [stdout]  --> src/palindrome_checker.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn palindrome() {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `repetitively` is never used
[INFO] [stdout]  --> src/repetitive_string.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn repetitively(){
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RightAngleTriangle` is never constructed
[INFO] [stdout]  --> src/generics.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct RightAngleTriangle<T> {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `RightAngleTriangle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `calculate_hypotenus` is never used
[INFO] [stdout]   --> src/generics.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl<T : Add<Output = T> + Mul<Output = T> + Copy> RightAngleTriangle<T> {
[INFO] [stdout]    | ------------------------------------------------------------------------ method in this implementation
[INFO] [stdout] 10 |     pub fn calculate_hypotenus(&self) -> T{
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `new` is never used
[INFO] [stdout]   --> src/traits.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub trait BookInformation {
[INFO] [stdout]    |           --------------- method in this trait
[INFO] [stdout] 10 |     fn new(&self, author : String, publisher: String) -> Self;
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "7ce61d1a45c46d403c20483ff7d56f77dc0c3ddc4b21b83416449acdfa452193", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ce61d1a45c46d403c20483ff7d56f77dc0c3ddc4b21b83416449acdfa452193", kill_on_drop: false }`
[INFO] [stdout] 7ce61d1a45c46d403c20483ff7d56f77dc0c3ddc4b21b83416449acdfa452193